CN109185191A - The starting control method and device of DC fan, outdoor unit, air conditioner - Google Patents
The starting control method and device of DC fan, outdoor unit, air conditioner Download PDFInfo
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- CN109185191A CN109185191A CN201811115561.0A CN201811115561A CN109185191A CN 109185191 A CN109185191 A CN 109185191A CN 201811115561 A CN201811115561 A CN 201811115561A CN 109185191 A CN109185191 A CN 109185191A
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- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 19
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims 2
- 238000007664 blowing Methods 0.000 abstract description 11
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- 238000004804 winding Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
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- 230000002159 abnormal effect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses starting control method and device, outdoor unit and the air conditioners of a kind of DC fan.Starting control method includes: to be injected based on zero current, detects the initial velocity of DC fan；Determine the initial velocity of DC fan and the relationship of pre-set velocity threshold value；According to the relationship of the initial velocity of DC fan and pre-set velocity threshold value, controls DC fan and enter different start-up modes.The starting control method of the DC fan of above embodiment can automatically identify the initial velocity of DC fan (comprising directional information).Further, different start-up modes are entered according to different initial velocity control DC fans, starting success rate of the DC fan at weather anomaly (blowing and raining) can be improved, reduce failure exception, improve user experience.
Description
Technical field
The present invention relates to motor control technology field, in particular to the starting control method and device of a kind of DC fan,
Outdoor unit, air conditioner.
Background technique
In the related art, DC fan is used widely because of its high efficiency in many electric equipment products, such as frequency conversion
Outdoor unit blower in air-conditioning.In the application of air conditioner, due to wind and rain weather and typhoon weather etc., outdoor unit DC fan is normal
Often work the situation being not zero in initial velocity, that is, requires DC fan that can have certain initial velocity (rotate forward or invert with the wind against the wind)
In the case where carry out starting operation.But under air conditioner position Sensorless Control application, when the initial velocity of DC fan
When relatively small, generation current very little, electric current signal to noise ratio is very poor, be easy to cause initial velocity estimation abnormal and DC fan is caused to open
Dynamic failure influences air-conditioning system work.
Summary of the invention
Embodiments of the present invention provide a kind of starting control method and device of DC fan, outdoor unit, air conditioner.
The starting control method of the DC fan of embodiment of the present invention, comprising:
It is injected based on zero current, detects the initial velocity of the DC fan；
Determine the initial velocity of the DC fan and the relationship of pre-set velocity threshold value；
According to the relationship of the initial velocity of the DC fan and the pre-set velocity threshold value, control the DC fan into
Enter different start-up modes.
The starting control method of the DC fan of above embodiment injects the first of estimation DC fan based on zero current
Speed can automatically identify the initial velocity of DC fan (comprising directional information).Further, according to different initial velocities
Control DC fan enters different start-up modes, and starting of the DC fan at weather anomaly (blowing and raining) can be improved
Success rate reduces failure exception, improves user experience.
In some embodiments, the pre-set velocity threshold value includes First Speed threshold value, according to the DC fan
The relationship of initial velocity and the pre-set velocity threshold value controls the DC fan and enters different start-up modes, comprising: works as institute
When stating initial velocity greater than the First Speed threshold value, the DC fan is controlled into direct closed-loop start-up mode；Wherein, institute
Stating First Speed threshold value is positive number.
In some embodiments, the pre-set velocity threshold value includes second speed threshold value, according to the DC fan
The relationship of initial velocity and the pre-set velocity threshold value controls the DC fan and enters different start-up modes, comprising: works as institute
Initial velocity is stated greater than the second speed threshold value and when being not more than the First Speed threshold value, the DC fan is controlled and enters
Dynamic braking start-up mode；Wherein, the First Speed threshold value > second speed threshold value, the second speed threshold value are positive
Number.
In some embodiments, the pre-set velocity threshold value includes third speed threshold value, according to the DC fan
The relationship of initial velocity and the pre-set velocity threshold value controls the DC fan and enters different start-up modes, comprising: works as institute
Initial velocity is stated greater than the third speed threshold value and when being not more than the second speed threshold value, the DC fan is controlled and enters
Normal positioning starting mode；Wherein, the second speed threshold value > third speed threshold value, the third speed threshold value are negative
Number.
In some embodiments, the pre-set velocity threshold value includes fourth speed threshold value, according to the DC fan
The relationship of initial velocity and the pre-set velocity threshold value controls the DC fan and enters different start-up modes, comprising: works as institute
Initial velocity is stated greater than the fourth speed threshold value and when being not more than the third speed threshold value, the DC fan is controlled and enters
The dynamic braking start-up mode；When the initial velocity is not more than the fourth speed threshold value, the direct current is detected again
The initial velocity of blower, and control the DC fan and be waited for；Wherein, the third speed threshold value > described 4th
Threshold speed；The fourth speed threshold value is negative.
In some embodiments, the starting control method includes: when the DC fan is opened in the normal positioning
When dynamic model formula, the position fixing process that the DC fan is injected through overcurrent is first controlled, then controls the DC fan and enters open loop
Operation, in open loop operation, after the current rotating speed of the DC fan reaches switch speed threshold value, controls the DC fan
Into operation with closed ring；When the DC fan is in the dynamic braking start-up mode, the DC fan is first controlled by energy
The process for consuming braking, then controls the DC fan and enters open loop operation, current when the DC fan in open loop operation
After revolving speed reaches the switch speed threshold value, controls the DC fan and enter operation with closed ring；When the DC fan is described
When direct closed-loop start-up mode, controls the DC fan and enter operation with closed ring.
In some embodiments, described injected based on zero current includes the flux observation method based on zero current injection, when
It is injected based on zero current, when detecting the initial velocity of the DC fan, the starting control method includes: that given d axis is arranged
Electric current and given q shaft current be zero and continue first time threshold with obtain the first voltage under two-phase stationary coordinate system and
Second voltage；It handles the first voltage and the second voltage and exports PWM waveform to drive the DC fan；Obtain institute
State the three-phase current of DC fan and according to the three-phase current calculate the first electric current under the two-phase stationary coordinate system and
Second electric current；And the first voltage, the second voltage, first electric current and described are utilized according to the flux observation method
Second electric current calculates the initial velocity of the DC fan.
In some embodiments, the first voltage, second voltage, described is utilized according to the flux observation method
First electric current and second electric current calculate the initial velocity of the DC fan, comprising: according to the first voltage, described
Two voltages, first electric current, second electric current, the resistance of the DC fan and d axle inductance and q axle inductance carry out
Flux estimator obtains the first estimation magnetic linkage and the second estimation magnetic linkage；And according to the first estimation magnetic linkage and the second estimation magnetic
Chain carries out phaselocked loop and calculates the initial velocity for obtaining the DC fan.
In some embodiments, the starting control method includes: according to first electric current and second electric current
Calculate d axis feedback current；It is calculated and is led according to the d axis feedback current, the d axle inductance, the q axle inductance and rotor flux
Dynamic magnetic linkage；And phaselocked loop calculating is carried out according to the first estimation magnetic linkage and the second estimation magnetic linkage and the active magnetic linkage
Obtain the estimation electrical angle of the rotor of the DC fan.
In some embodiments, described injected based on zero current includes the extension back-emf observation based on zero current injection
Method is injected when based on zero current, when detecting the initial velocity of the DC fan, the starting control method include: setting to
Determine d shaft current and given q shaft current is zero and continues first time threshold to obtain in the two-phase synchronous rotating coordinate system
Tertiary voltage and the 4th voltage；It handles the tertiary voltage and the 4th voltage and exports PWM waveform to drive the direct current
Blower；It obtains the three-phase current of the DC fan and is calculated according to the three-phase current in the two-phase synchronous rotating frame
Under third electric current and the 4th electric current；Using the tertiary voltage and the 4th voltage as the 5th under hypothesis rotating coordinate system
Voltage and the 6th voltage, using the third electric current and the 4th electric current as the 5th electric current under the hypothesis rotating coordinate system
With the 6th electric current；And the 5th voltage, the 6th voltage, the 5th electricity are utilized according to the extension back-emf observation method
Stream and the 6th electric current calculate the initial velocity of the DC fan.
In some embodiments, the 5th voltage, the 6th electricity are utilized according to the extension back-emf observation method
Pressure, the 5th electric current and the 6th electric current calculate the initial velocity of the DC fan, comprising: according to the 5th electricity
Pressure, the 6th voltage, the 5th electric current, the 6th electric current are extended back-emf and estimate to obtain in hypothesis rotation
The first estimation back-emf and the second estimation back-emf under coordinate system；According to the first estimation back-emf and second estimation
Back-emf calculates the angular deviation for assuming rotating coordinate system and the two-phase synchronous rotating frame；And according to the angle
Deviation carries out the estimation electrical angle that phaselocked loop calculates the rotor of the initial velocity and the DC fan that obtain the DC fan.
In some embodiments, the three-phase current of the DC fan, including following one of which are obtained: described in detection
The bus current of DC fan, and calculate according to the bus current of the DC fan three-phase current of the DC fan；Inspection
The biphase current of the DC fan is surveyed, and calculates the three-phase electricity of the DC fan according to the biphase current of the DC fan
Stream；Detection obtains the three-phase current of the DC fan.
The starting control device of the DC fan of embodiment of the present invention, comprising:
Detection module, the detection module are used to inject based on zero current, detect the initial velocity of the DC fan；
Comparison module, the comparison module are used to determine the initial velocity of the DC fan and the pass of pre-set velocity threshold value
System；
Control module, the control module are used for initial velocity and the pre-set velocity threshold value according to the DC fan
Relationship, control the DC fan and enter different start-up modes.
In the starting control device of the DC fan of above embodiment, the first of estimation DC fan is injected based on zero current
Speed can automatically identify the initial velocity of DC fan (comprising directional information).Further, according to different initial velocities
Control DC fan enters different start-up modes, and starting of the DC fan at weather anomaly (blowing and raining) can be improved
Success rate reduces failure exception, improves user experience.
In some embodiments, the pre-set velocity threshold value includes First Speed threshold value, and the control module is used for: when
When the initial velocity is greater than the First Speed threshold value, the DC fan is controlled into direct closed-loop start-up mode；Wherein,
The First Speed threshold value is positive number.
In some embodiments, the pre-set velocity threshold value includes second speed threshold value, and the control module is used for: when
The initial velocity be greater than the second speed threshold value and be not more than the First Speed threshold value when, control the DC fan into
Enter dynamic braking start-up mode；Wherein, the First Speed threshold value > second speed threshold value, the second speed threshold value are
Positive number.
In some embodiments, the pre-set velocity threshold value includes third speed threshold value, and the control module is used for: when
The initial velocity be greater than the third speed threshold value and be not more than the second speed threshold value when, control the DC fan into
Enter normal positioning starting mode；Wherein, the second speed threshold value > third speed threshold value, the third speed threshold value are
Negative.
In some embodiments, the pre-set velocity threshold value includes fourth speed threshold value, and the control module is used for: when
The initial velocity be greater than the fourth speed threshold value and be not more than the third speed threshold value when, control the DC fan into
Enter the dynamic braking start-up mode；When the initial velocity is not more than the fourth speed threshold value, detect again described straight
The initial velocity of flow fan, and control the DC fan and be waited for；Wherein, the third speed threshold value > described
Four threshold speeds；The fourth speed threshold value is negative.
In some embodiments, the control module is used for: when the DC fan is in the normal positioning starting mould
When formula, the position fixing process that the DC fan is injected through overcurrent is first controlled, then controls the DC fan and enters open loop operation,
In open loop operation, after the current rotating speed of the DC fan reaches switch speed threshold value, controls the DC fan and enter
Operation with closed ring；When the DC fan is in the dynamic braking start-up mode, the DC fan is first controlled by energy consumption system
Dynamic process, then control the DC fan and enter open loop operation, in open loop operation, when the current rotating speed of the DC fan
After reaching the switch speed threshold value, controls the DC fan and enter operation with closed ring；When the DC fan is described direct
When closed-loop start-up mode, controls the DC fan and enter operation with closed ring.
In some embodiments, described injected based on zero current includes the flux observation method based on zero current injection, when
It is injected based on zero current, when detecting the initial velocity of the DC fan, the detection module is used for: given d shaft current is set
It is zero with given q shaft current and continues first time threshold to obtain the first voltage and second under two-phase stationary coordinate system
Voltage；It handles the first voltage and the second voltage and exports PWM waveform to drive the DC fan；It obtains described straight
The three-phase current of flow fan simultaneously calculates the first electric current and second under the two-phase stationary coordinate system according to the three-phase current
Electric current；And the first voltage, the second voltage, first electric current and described second are utilized according to the flux observation method
Electric current calculates the initial velocity of the DC fan.
In some embodiments, the detection module is used for: according to the first voltage, second voltage, described
First electric current, second electric current, the resistance of the DC fan and d axle inductance and q axle inductance carry out flux estimator and obtain
First estimation magnetic linkage and the second estimation magnetic linkage；And phaselocked loop is carried out according to the first estimation magnetic linkage and the second estimation magnetic linkage
Calculate the initial velocity for obtaining the DC fan.
In some embodiments, the detection module is used for: calculating d according to first electric current and second electric current
Axis feedback current；Active magnetic is calculated according to the d axis feedback current, the d axle inductance, the q axle inductance and rotor flux
Chain；
And phaselocked loop meter is carried out according to the first estimation magnetic linkage and the second estimation magnetic linkage and the active magnetic linkage
Calculate the estimation electrical angle for obtaining the rotor of the DC fan.
In some embodiments, described injected based on zero current includes the extension back-emf observation based on zero current injection
Method is injected when based on zero current, and when detecting the initial velocity of the DC fan, the detection module is used for: given d axis is arranged
Electric current and given q shaft current are zero and continue first time threshold to obtain third electricity in the two-phase synchronous rotating coordinate system
Pressure and the 4th voltage；It handles the tertiary voltage and the 4th voltage and exports PWM waveform to drive the DC fan；It obtains
It takes the three-phase current of the DC fan and the under the two-phase synchronous rotating frame is calculated according to the three-phase current
Three electric currents and the 4th electric current；Using the tertiary voltage and the 4th voltage as the 5th voltage assumed under rotating coordinate system and
6th voltage, using the third electric current and the 4th electric current as the 5th electric current and the 6th under the hypothesis rotating coordinate system
Electric current；And the 5th voltage, the 6th voltage, the 5th electric current and institute are utilized according to the extension back-emf observation method
State the initial velocity that the 6th electric current calculates the DC fan.
In some embodiments, the detection module is used for: according to the 5th voltage, the 6th voltage, described
5th electric current, the 6th electric current are extended back-emf is estimated to obtain under the hypothesis rotating coordinate system first and estimate instead
Potential and the second estimation back-emf；The hypothesis rotation is calculated according to the first estimation back-emf and the second estimation back-emf
Turn the angular deviation of coordinate system and the two-phase synchronous rotating frame；Phaselocked loop, which is carried out, according to the angular deviation calculates acquisition
The estimation electrical angle of the rotor of the initial velocity of the DC fan and the DC fan.
In some embodiments, the detection module connects current sensor, and the current sensor is for detecting institute
The bus current of DC fan is stated, the detection module is for obtaining the bus current of the DC fan and according to the direct current
The bus current of blower calculates the three-phase current of the DC fan；Or the current sensor is for detecting the direct current wind
The biphase current of machine, the detection module is for obtaining the biphase current of the DC fan and according to the two of the DC fan
Phase current calculates the three-phase current of the DC fan；Or the current sensor is used to detect the three-phase of the DC fan
Electric current, the detection module are used to obtain the three-phase current of the DC fan.
The outdoor unit of embodiment of the present invention, including DC fan described in DC fan and any of the above-described embodiment
Start control device.
In the outdoor unit of above embodiment, the initial velocity of estimation DC fan is injected based on zero current, it can be with automatic identification
The initial velocity (including directional information) of DC fan out.Further, according to different initial velocity control DC fan into
Enter different start-up modes, starting success rate of the DC fan at weather anomaly (blowing and raining) can be improved, reduces event
Barrier is abnormal, improves user experience.
The air conditioner of embodiment of the present invention, including DC fan described in DC fan and any of the above-described embodiment
Start control device.
In the air conditioner of above embodiment, the initial velocity of estimation DC fan is injected based on zero current, it can be with automatic identification
The initial velocity (including directional information) of DC fan out.Further, according to different initial velocity control DC fan into
Enter different start-up modes, starting success rate of the DC fan at weather anomaly (blowing and raining) can be improved, reduces event
Barrier is abnormal, improves user experience.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is the control circuit topological diagram of the DC fan of embodiment of the present invention；
Fig. 2 is the vector controlled block diagram of the DC fan of embodiment of the present invention；
Fig. 3 is another vector controlled block diagram of the DC fan of embodiment of the present invention；
Fig. 4 is the flow diagram of the starting control method of the DC fan of embodiment of the present invention；
Fig. 5 is another flow diagram of the starting control method of the DC fan of embodiment of the present invention；
Fig. 6 is the another flow diagram of the starting control method of the DC fan of embodiment of the present invention；
Fig. 7 is the schematic diagram of the initial velocity estimation of the DC fan of embodiment of the present invention；
Fig. 8 is the schematic diagram of the coordinate transform of embodiment of the present invention；
Fig. 9 is the schematic diagram of the flux observation method of embodiment of the present invention；
Figure 10 is the schematic diagram of the normal positioning starting mode of the DC fan of embodiment of the present invention；
Figure 11 is the control block diagram of the position fixing process of the DC fan of embodiment of the present invention；
Figure 12 is the control block diagram of the open loop operation of the DC fan of embodiment of the present invention；
Figure 13 is the schematic diagram of the dynamic braking start-up mode of the DC fan of embodiment of the present invention；
Figure 14 is the control block diagram of the no-voltage braking of the DC fan of embodiment of the present invention；
Figure 15 is the control block diagram of the forced brake of the DC fan of embodiment of the present invention；
Figure 16 is the schematic diagram of the direct closed-loop start-up mode of the DC fan of embodiment of the present invention；
Figure 17 is another flow diagram of the starting control method of the DC fan of embodiment of the present invention；
Figure 18 is the another flow diagram of the starting control method of the DC fan of embodiment of the present invention；
Figure 19 is another schematic diagram of the initial velocity estimation of the DC fan of embodiment of the present invention；
Figure 20 is the schematic diagram of the extension back-emf observation method of embodiment of the present invention；
Figure 21 is another control block diagram of the position fixing process of the DC fan of embodiment of the present invention；
Figure 22 is another control block diagram of the open loop operation of the DC fan of embodiment of the present invention；
Figure 23 is another control block diagram of the no-voltage braking of the DC fan of embodiment of the present invention；
Figure 24 is another control block diagram of the forced brake of the DC fan of embodiment of the present invention；
Figure 25 is the module diagram of the starting control device of the DC fan of embodiment of the present invention；
Figure 26 is the structural schematic diagram of the air conditioner of embodiment of the present invention.
Main element symbol description:
DC fan 10, drive module 20, control chip 30, electrolytic capacitor 40, current sensor 50, starting control device
100, detection module 110, comparison module 120, control module 130, air conditioner 1000, outdoor unit 1100, indoor unit 1200.
Specific embodiment
Embodiments of the present invention are described below in detail, the embodiment of the embodiment is shown in the accompanying drawings, wherein
Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, for explaining only the invention, and should not be understood as to limit of the invention
System.
Referring to Fig. 1, in embodiments of the present invention, the control circuit topology of DC fan 10 include DC fan 10,
Drive module 20, control chip 30 and electrolytic capacitor 40.DC fan 10 connects drive module 20.Drive module 20 is by power
The three-phase bridge driving circuit of switching tube composition.Drive module 20 includes the three upper bridge arms and three lower bridge arms of connection.Three
Upper bridge arm and three lower bridge arms, which are separately connected, constitutes three-phase bridge arm.Bridge arm and the connection of the first lower bridge arm have first node on first
A1, bridge arm and the connection of the second lower bridge arm have second node A2 on second, and bridge arm connect with third lower bridge arm with the in third
Three node A3.First node A1, second node A2 and third node A3 are respectively corresponded and are connected with the three-phase windings of DC fan 10.
Control chip 30 can export the driving signal of DC fan 10 to drive module 20 to control six power in drive module 20
The turn-on and turn-off of switching tube, to control the operation of DC fan 10.
Bridge arm includes power switch tube, and power switch tube inverse parallel has diode.Power switch tube can be IGBT (insulation
Grid bipolar junction transistor, Insulated Gate Bipolar Transistor) or MOSFET (metal-oxide half
Conductor field effect transistor, Metal-Oxide-Semiconductor Field-Effect Transistor).Certainly, it drives
The intelligent power module (IPM, Intelligent Power Module) of six IGBT of enclosed inside can also be used in module 20,
In each IGBT inverse parallel have diode.The wind that DC fan 10 can drive for permanent-magnet brushless DC electric machine or permanent magnet synchronous motor
Machine.
Fig. 2 and Fig. 3 are please referred to, in the present embodiment, DC fan 10 is position-sensor-free.In DC fan 10
Position-sensor-free vector controlled in, given rotating speedWith estimation revolving speedIt is exported by pi controller (PI)
Given torqueFor example, in DC fan 10 (durface mounted permanent magnet synchronous motor), according to given torqueWith torque current
COEFFICIENT KtGiven torque current is calculated(q shaft current) gives direct-axis current(d shaft current) is by weak magnetoelectricity stream ifwcCertainly
It is fixed.According to given d shaft currentGiven q shaft currentWith feedback current id/iqBy vector controlled output voltage ud/uq, then
Control output voltage u is obtained by Parker (Park) inverse transformationα/uβ, using space vector modulation (Space Vetor
Modulation, SVM) output PWM (pulse width modulation, Pulse Width Modulation) waveform, by drive module
20 drivings DC fan 10 (durface mounted permanent magnet synchronous motor).Therefore, DC fan 10 can be detected by current sensor 50
Three-phase current (iA、iBAnd iC), and feedback current i is obtained by Clarke (Clarke) transformationα/iβ, using Parker
(Park) variation obtains feedback current id/iq.It then can be according to output voltage uα/uβWith feedback current iα/iβAnd motor ginseng
Number (electric motor resistance Rs, d axle inductance LdWith q axle inductance Lq), the estimation revolving speed of DC fan 10 is calculated by flux observation methodWith estimation electrical angleOr it can be according to vector controlled output voltage ud/uqWith feedback current id/iqAnd the parameter of electric machine
(electric motor resistance Rs, d axle inductance LdWith q axle inductance Lq), the estimation that DC fan 10 is calculated by extending back-emf observation method
Revolving speedWith estimation electrical angle
It wherein, is the estimation revolving speed that DC fan 10 is calculated by flux observation method shown in Fig. 2With estimation electrical angleVector controlled block diagram；It is the estimation revolving speed that DC fan 10 is calculated by extension back-emf observation method shown in Fig. 3With
Estimate electrical angleVector controlled block diagram.Flux observation method is the direct current wind based on active magnetic linkage (Active Flux) observation
The speed and rotor position estimate algorithm of machine 10.Extension back-emf observation method is seen based on extension back-emf (Extended EMF)
The speed and rotor position estimate algorithm of the DC fan 10 of survey.
It should be noted that id/iqIndicate idAnd iqTwo amounts, ud/uqIndicate udAnd uqTwo amounts, uα/uβIndicate uαAnd uβ
Two amounts, iα/iβIndicate iαAnd iβTwo amounts.
Referring to Fig. 4, the starting control method of the DC fan 10 of this embodiment of the present invention, comprising:
Step S10: being injected based on zero current, detects the initial velocity ω of DC fan 100；
Step S20: the initial velocity ω of DC fan 10 is determined0With the relationship of pre-set velocity threshold value；
Step S30: according to the initial velocity ω of DC fan 100With the relationship of pre-set velocity threshold value, DC fan is controlled
10 enter different start-up modes.
The starting control method of the DC fan 10 of above embodiment injects estimation DC fan 10 based on zero current
Initial velocity can automatically identify the initial velocity ω of DC fan 100(including directional information).Further, according to different
Initial velocity ω0It controls DC fan 10 and enters different start-up modes, DC fan 10 can be improved in weather anomaly (under blowing
Rain) in the case of starting success rate, reduce failure exception, improve user experience.
In the following, appended attached drawing will be cooperated to be described in detail the present invention by following specific embodiments.
Embodiment one:
Please refer to Fig. 5 and Fig. 6, the starting control method of the DC fan 10 of embodiment of the present invention, comprising:
Step S12: the flux observation method based on zero current injection detects the initial velocity ω of DC fan 100。
Specifically, referring to Fig. 7, step S12 includes: the given d shaft current of setting and given q shaft current is zero and continues
First time threshold is to obtain the first voltage u under two-phase stationary coordinate systemαWith second voltage uβ；Handle first voltage uαWith
Second voltage uβAnd PWM waveform is exported to drive DC fan 10；Obtain the three-phase current (i of DC fan 10A、iBAnd iC) simultaneously
The first electric current i under two-phase stationary coordinate system is calculated according to three-phase currentαWith the second electric current iβ；And according to flux observation method benefit
With first voltage uα, second voltage uβ, the first electric current iαWith the second electric current iβCalculate the initial velocity ω of DC fan0。
It is appreciated that according to given d shaft currentGiven q shaft currentWith feedback current id/iqIt is exported by vector controlled
Voltage ud/uq, then first voltage and second voltage u are obtained by Parker (Park) inverse transformationα/uβ, using space vector tune
Make (Space Vetor Modulation, SVM) output PWM (pulse width modulation, Pulse Width Modulation) wave
Shape drives DC fan 10 by drive module 20.It is then possible to detect the three-phase of DC fan 10 by current sensor 50
Electric current (iA、iBAnd iC), and the first electric current and the second electric current i are obtained by Clarke (Clarke) transformationα/iβ, using Parker
(Park) change available feedback current id/iq。
Due to the effect of current closed-loop, actual feedback currents are maintained essentially near zero.In the initial speed of DC fan 10
Spend ω0Estimation procedure in because braking effect caused by Zero voltage vector is unobvious, the revolving speed of DC fan 10 is basic
Stablize.Flux observation method is under two-phase stationary coordinate system according to voltage (uα/uβ) and current signal (iα/iβ) estimate direct current
The initial velocity ω of blower 100, estimated result is not influenced by current loop control, and estimated result includes revolving speed and direction letter
Breath, does not need the direction of rotation of additional detections DC fan 10.In some instances, first time threshold can for 300ms or
A numerical value between 5s or 300ms~5s.The initial velocity ω of DC fan 100Including estimating initial speedThe direction and.
The three-phase current of DC fan 10 can detect the bus current of DC fan 10 by a current sensor 50,
Then it is calculated and is obtained according to bus current.The three-phase current of DC fan 10 can also be examined respectively by two current sensors 50
The biphase current of DC fan 10 is surveyed, is then calculated and is obtained according to biphase current.The three-phase current of DC fan 10 can also lead to
It crosses three current sensors 50 and detects acquisition respectively.In the example of fig. 1, three current sensors 50 respectively with DC fan 10
Three-phase windings connection, current signal is sent to control chip after detect acquisition three-phase current respectively by three current sensors 50
30。
It is possible to further be based on flux linkage model ψa=(Ld-Lq)id+ψfTo detect the initial velocity ω of DC fan 100。
Wherein, ψaIndicate active magnetic linkage, LdIndicate d axis (d-axis) inductance, LqIndicate q axis (quadrature axis) inductance, idIndicate d axis feedback current,
ψfIndicate the rotor flux of DC fan 10.Fig. 8 and Fig. 9 are please referred to, according toWithIt carries out flux estimator and obtains the first estimation magnetic
ChainWith the second estimation magnetic linkageThen it carries out phaselocked loop and calculates the initial velocity ω for obtaining DC fan 100(include estimation
Initial speedAnd directional information) and DC fan 10 rotor estimation electrical angleWherein, uαIndicate first voltage, uβ
Indicate second voltage, RsIndicate that the resistance of DC fan 10, p=d/dt indicate differential operator, iαIndicate the first electric current, iβIt indicates
Second electric current, ψαIndicate the first magnetic linkage, ψβIndicate the second magnetic linkage, θeIndicate the electrical angle of rotor.
It in other words, can be according to first voltage uα, second voltage uβ, the first electric current iα, the second electric current iβ, DC fan 10
Resistance RsAnd d axle inductance LqWith q axle inductance LdIt carries out flux estimator and obtains the first estimation magnetic linkageWith the second estimation magnetic linkageThen according to the first estimation magnetic linkageWith the second estimation magnetic linkageDC fan 10 can be obtained by carrying out phaselocked loop calculating
Initial velocity ω0(include estimation initial speedAnd directional information).According to the first electric current iαWith the second electric current iβIt is anti-to calculate d axis
Supply current id；Then according to d axis feedback current id, d axle inductance Ld, q axle inductance LqAnd rotor flux ψfCalculate active magnetic linkage ψa；
It can be according to the first estimation magnetic linkageWith the second estimation magnetic linkageAnd active magnetic linkage ψaIt carries out phaselocked loop and calculates acquisition direct current wind
The estimation electrical angle of the rotor of machine 10
In one example, as the initial velocity ω of DC fan 100For positive number (i.e. initial velocity ω0Direction be positive)
When, indicate that the direction of rotation of DC fan 10 is (to indicate that DC fan 10 rotates forward) clockwise；At the beginning of DC fan 10
Beginning speed omega0For negative (i.e. initial velocity ω0Direction be negative) when, indicate DC fan 10 direction of rotation be counterclockwise side
To (indicating that DC fan 10 inverts).
The starting control method of the DC fan 10 of embodiment of the present invention, comprising:
Step S20: the initial velocity ω of DC fan 10 is determined0With the relationship of pre-set velocity threshold value.
Wherein, pre-set velocity threshold value includes First Speed threshold value ω1, second speed threshold value ω2, third speed threshold value ω3With
Fourth speed threshold value ω4.Wherein, First Speed threshold value ω1> second speed threshold value ω2> third speed threshold value ω3> fourth speed
Threshold value ω4.First Speed threshold value ω1With second speed threshold value ω2For positive number, third speed threshold value ω3With fourth speed threshold value ω4
For negative.In some embodiments, First Speed threshold value ω1With second speed threshold value ω2It can be understood as positive turn for positive number
Speed, third speed threshold value ω3With fourth speed threshold value ω4It can be understood as reverse speed for negative.
In some instances, First Speed threshold value ω1It can be between 300RPM or 400RPM or 300RPM~400RPM
A numerical value.Second speed threshold value ω2It can a numerical value between 40RPM or 50RPM or 40RPM~50RPM.The
Three threshold speed ω3It can a numerical value between -40RPM or -50RPM or -50RPM~-40RPM.Fourth speed threshold value
ω4It can a numerical value between -300RPM or -400RPM or -400RPM~-300RPM.Preferably, First Speed threshold
Value ω1With fourth speed threshold value ω4Absolute value it is identical, second speed threshold value ω2With third speed threshold value ω3Absolute value phase
Together.
Specifically, step S20 includes:
Step S22: judge initial velocity ω0Whether First Speed threshold value ω is greater than1.When initial speed omega0No more than first
Threshold speed ω1When, it enters step S24: judging initial velocity ω0Whether second speed threshold value ω is greater than2.When initial speed omega0
No more than second speed threshold value ω2When, it enters step S26: judging initial velocity ω0Whether third speed threshold value ω is greater than3.When
Initial velocity ω0No more than third speed threshold value ω3When, it enters step S28: judging initial velocity ω0Whether fourth speed is greater than
Threshold value ω4。
The starting control method of the DC fan 10 of embodiment of the present invention, comprising:
Step S30: according to the initial velocity ω of DC fan 100With the relationship of pre-set velocity threshold value, DC fan is controlled
10 enter different start-up modes.
Specifically, when initial speed omega0Greater than First Speed threshold value ω1When, enter step S32: control DC fan 10 into
Enter direct closed-loop start-up mode.When initial speed omega0Greater than second speed threshold value ω2And it is not more than First Speed threshold value ω1When,
Enter step S34: control DC fan 10 enters dynamic braking start-up mode.When initial speed omega0Greater than third speed threshold value
ω3And it is not more than second speed threshold value ω2When, enter step S36: control DC fan 10 enters normal positioning starting mode.When
Initial velocity ω0Greater than fourth speed threshold value ω4And it is not more than third speed threshold value ω3When, enter step S34: control direct current wind
Machine 10 enters dynamic braking start-up mode.When initial speed omega0No more than fourth speed threshold value ω4When, DC fan is detected again
10 initial velocity ω0, that is, step S12 is returned to, and control DC fan 10 and be waited for.
Referring to Fig. 10, first controlling DC fan 10 through overcurrent when DC fan 10 is in normal positioning starting mode
The position fixing process of injection, then control DC fan 10 and work as forward when DC fan 10 in open loop operation into open loop operation
After speed reaches switch speed threshold value, control DC fan 10 enters operation with closed ring.
Figure 11 is please referred to, in position fixing process, given d shaft current and given q shaft current are set, and fixed decoupling angle is set
Degree is run with determining the position of the rotor of DC fan 10 to control DC fan 10.Wherein, be arranged given d shaft current and
Given q shaft current refers to that given d shaft current and given q shaft current are given according to certain rule, such as d shaft current and q axis electricity
Stream is started from scratch respectively gradually rises up to setting value, then remains unchanged.The setting value of d shaft current and q shaft current can be identical,
It can also be different.In other embodiments, it is zero that given q shaft current, which can be set, in position fixing process, and given d shaft current is started from scratch
Gradually rise up to setting value；Or it is zero that given d shaft current, which can be set, given q shaft current, which is started from scratch, to be gradually risen up to set
Value.Decoupling angle is not zero.In the example of fig. 11, flux observation method can be used to estimate magnetic linkage angle and the speed of DC fan 10
Degree.
Figure 12 is please referred to, during open loop operation, given d shaft current and given q shaft current are set, and decoupling angle is set
Degree, so that the revolving speed of DC fan 10 increases.Wherein, given d shaft current is set and given q shaft current refers to given d axis electricity
Stream and given q shaft current are given according to certain rule, and e.g. it is constant to be maintained at setting value for d shaft current and q shaft current；In another example
It is d shaft current and q shaft current starts from scratch gradually rise up to setting value respectively, then remains unchanged.D shaft current and q shaft current
Setting value may be the same or different.In other embodiments, open loop operation process can be set given q shaft current and be
Zero, given d shaft current, which is started from scratch, gradually rises up to setting value；Or it is zero that given d shaft current, which can be set, gives q shaft current
Start from scratch and gradually rises up to setting value.Speed (decoupling angle at the time of the rate of change of decoupling angle terminates from position fixing process
The initial value of the rate of change of degree) start to be gradually lowered to zero.In the illustration in fig 12, it is straight to estimate that flux observation method can be used
The magnetic linkage angle of flow fan 10 and speed.
Referring to Fig. 2, operation with closed ring includes current loop control and der Geschwindigkeitkreis control, using straight during operation with closed ring
The estimation electrical angle of flow fan 10It is decoupled, according to given rotating speedWith the estimation revolving speed of DC fan 10It is closed
Ring control, DC fan 10 is with the operation of certain revolving speed when operation with closed ring.For example, DC fan 10 is with given rotating speedOperation.
Figure 13 is please referred to, when DC fan 10 is in dynamic braking start-up mode, first control DC fan 10 passes through energy consumption
The process of braking, then DC fan 10 is controlled into open loop operation, in open loop operation, when the current rotating speed of DC fan 10 reaches
To after switch speed threshold value, control DC fan 10 enters operation with closed ring.In dynamic braking start-up mode, i.e. DC fan 10
There are when certain positive or reversed initial velocity, dynamic braking need to be first passed through.Dynamic braking process includes no-voltage braking and forces
Brake two processes.
In one embodiment, when control DC fan 10 enters dynamic braking start-up mode, DC fan is first controlled
10, which enter no-voltage, brakes；When no-voltage is braked so that the speed of DC fan 10 is greater than the 6th threshold speed ω6And it is not more than
5th threshold speed ω5When, control DC fan 10 enters forced brake.
Wherein, First Speed threshold value ω1> the five threshold speed ω5> the six threshold speed ω6> fourth speed threshold value ω4。
5th threshold speed ω5For positive number, the 6th threshold speed ω6For negative.5th threshold speed ω5It can be understood as just for positive number
To revolving speed, the 6th threshold speed ω6It can be understood as reverse speed for negative.In some instances, the 5th threshold speed ω5It can
Think a numerical value between 25RPM or 30RPM or 25RPM~30RPM.6th threshold speed ω6Can for -25RPM or -
A numerical value between 30RPM or -30RPM~-25RPM.Preferably, the 5th threshold speed ω5With the 6th threshold speed ω6's
Absolute value is identical.
In another embodiment, when control DC fan 10 enters dynamic braking start-up mode, direct current wind is first controlled
Machine 10 enters no-voltage and brakes；When no-voltage braking reaches second time threshold, control DC fan 10 enters forced brake.
In some instances, second time threshold can a numerical value between 1s or 10s or 1s~10s.
Figure 14 is please referred to, no-voltage braking includes: the fixed decoupling angle of setting and setting output d shaft voltage and q shaft voltage
It is zero；The upper bridge arms of control three are simultaneously turned on to be simultaneously turned off with three lower bridge arms, or control three upper bridge arms simultaneously turn off and
Three lower bridge arms simultaneously turn on, so that DC fan 10 is in the working condition of three-phase windings short circuit.
In this way, can be generated electricity by the revolving speed of DC fan 10 itself, so that being generated on the three-phase windings of DC fan 10
Generation current is to realize dynamic braking.No-voltage braking braking moment is big, and faster, than zero current braking, (zero current is braked for braking
It is the rotor mechanical friction by DC fan, does not generate braking moment) effect is good.In one example, fixed decoupling angle is set
It is set to zero.In the example in figure 14, flux observation method can be used to estimate magnetic linkage angle and the speed of DC fan 10.
Figure 15 is please referred to, forced brake includes: that given d shaft current and q shaft current is arranged and forces setting decoupling angle；It will
The rate of change of decoupling angle is gradually lowered to zero since the speed for the DC fan 10 that the no-voltage end of braking moment obtains.
It is appreciated that the given d shaft current of setting and given q shaft current refer to given d shaft current and given q shaft current
It is given according to certain rule, such as d shaft current and q shaft current start from scratch gradually rise up to setting value respectively, then keeps not
Become.The setting value of d shaft current and q shaft current may be the same or different.In other embodiments, forced brake process can
It is zero so that given q shaft current is arranged, given d shaft current, which is started from scratch, gradually rises up to setting value；Or given d axis electricity can be set
Stream is zero, and given q shaft current, which is started from scratch, gradually rises up to setting value.The rate of change for decoupling angle indicates angular speed.Zero
When voltage end of braking, the speed of DC fan 10 can be obtained by estimation.Setting decoupling angle is forced, no-voltage is being terminated
When braking enters forced brake, the speed for the DC fan 10 that the no-voltage end of braking moment is obtained is as the change of decoupling angle
Change the initial value of rate, the rate of change for decoupling angle is gradually lowered to zero since initial value.In the example of fig. 15, it can adopt
Magnetic linkage angle and the speed of DC fan 10 are estimated with flux observation method.
It should be noted that decoupling angle is the angle for being used to decouple in the vector controlled of DC fan.
Figure 16 is please referred to, when DC fan 10 is in direct closed-loop start-up mode, control DC fan 10 enters closed loop and transports
Row.Specifically, in direct closed-loop start-up mode, i.e., closed loop fortune is cut directly into when the forward rotational speed of DC fan 10 is higher
Row, needs not move through position fixing process and open loop operation.
In some instances, switch speed threshold value can be between 100RPM or 600RPM or 100RPM~600RPM
One numerical value.
The starting control method of the DC fan 10 of above embodiment, the flux observation method estimation based on zero current injection
The initial velocity of DC fan 10 can automatically identify the initial velocity ω of DC fan 100(including directional information).Further
Ground, according to different initial velocity ω0It controls DC fan 10 and enters different start-up modes, DC fan 10 can be improved in day
Starting success rate in the case of gas abnormal (blowing and raining), reduces failure exception, improves user experience.
Particularly, the flux observation method based on zero current injection is insensitive to electric current signal to noise ratio and its phaselocked loop itself has
Filtering characteristic avoids electric current signal to noise ratio difference and causes the problem of initial velocity estimation exception.
Embodiment two:
Please refer to Figure 17 and Figure 18, the starting control method of the DC fan 10 of embodiment of the present invention, comprising:
Step S14: the extension back-emf observation method based on zero current injection detects the initial velocity ω of DC fan 100。
Specifically, Figure 19 and Figure 20 are please referred to, step S14 includes: the given d shaft current of setting and given q shaft current is
Zero and continue first time threshold to obtain the tertiary voltage u under two-phase synchronous rotating framedWith the 4th voltage uq；Processing the
Three voltage udWith the 4th voltage uqAnd PWM waveform is exported to drive DC fan 10；Obtain the three-phase current (i of DC fan 10A、
iBAnd iC) and third electric current i in the two-phase synchronous rotating coordinate system is calculated according to three-phase currentdWith the 4th electric current iq；By third
Voltage udWith the 4th voltage uqAs the 5th voltage u assumed under rotating coordinate systemδWith the 6th voltage uγ, by third electric current idWith
4th electric current iqAs the 5th electric current i assumed under rotating coordinate systemδWith the 6th electric current iγ；And according to extension back-emf observation method
Utilize the 5th voltage uδ, the 6th voltage uγ, the 5th electric current iδWith the 6th electric current iγCalculate the initial velocity ω of DC fan0。
It is appreciated that according to given d shaft currentGiven q shaft currentWith feedback current id/iqIt is defeated by vector controlled
Tertiary voltage and the 4th voltage u outd/uq, then control output voltage u is obtained by Parker (Park) inverse transformationα/uβ, using
Space vector modulation (Space Vetor Modulation, SVM) exports PWM (pulse width modulation, Pulse Width
Modulation) waveform drives DC fan 10 by drive module 20.It is then possible to be detected directly by current sensor 50
Three-phase current (the i of flow fan 10A、iBAnd iC), and feedback current i is obtained by Clarke (Clarke) transformationα/iβ, using
Parker (Park) changes available third electric current and the 4th electric current id/iq。
It is assumed that rotating coordinate system (δ-γ coordinate system) is close to two-phase synchronous rotating frame (d-q coordinate system), in ideal
Under state, it can will assume that rotating coordinate system is equal to two-phase synchronous rotating frame.Therefore, two-phase synchronous rotary can be sat
Tertiary voltage u under mark systemdWith the 4th voltage uqAs the 5th voltage u assumed under rotating coordinate systemδWith the 6th voltage uγ, will
Third electric current i under two-phase synchronous rotating framedWith the 4th electric current iqAs the 5th electric current i assumed under rotating coordinate systemδWith
6th electric current iγ.In other words, the 5th voltage uδEqual to tertiary voltage ud, the 6th voltage uγEqual to the 4th voltage uq, the 5th electric current
iδEqual to third electric current id, the 6th electric current iγEqual to the 4th electric current iq。
Due to the effect of current closed-loop, actual feedback currents are maintained essentially near zero.In the initial speed of DC fan 10
Spend ω0Estimation procedure in because braking effect caused by Zero voltage vector is unobvious, the revolving speed of DC fan 10 is basic
Stablize.Extending back-emf observation method is it is assumed that according to voltage (u under rotating coordinate systemδ/uγ) and current signal (iδ/iγ) estimate
Count the initial velocity ω of DC fan 100, estimated result do not influenced by current loop control, and estimated result include revolving speed and
Directional information does not need the direction of rotation of additional detections DC fan 10.In some instances, first time threshold can be
A numerical value between 300ms or 5s or 300ms~5s.The initial velocity ω of DC fan 100Including estimating initial speed
The direction and.
It should be noted that id/iqIndicate idAnd iqTwo amounts, ud/uqIndicate udAnd uqTwo amounts, uα/uβIndicate uαAnd uβ
Two amounts, iα/iβIndicate iαAnd iβTwo amounts, uδ/uγIndicate uδAnd uγTwo amounts, iδ/iγIndicate iδAnd iγTwo amounts.
The three-phase current of DC fan 10 can detect the bus current of DC fan 10 by a current sensor 50,
Then it is calculated and is obtained according to bus current.The three-phase current of DC fan 10 can also be examined respectively by two current sensors 50
The biphase current of DC fan 10 is surveyed, is then calculated and is obtained according to biphase current.The three-phase current of DC fan 10 can also lead to
It crosses three current sensors 50 and detects acquisition respectively.In the example of fig. 1, three current sensors 50 respectively with DC fan 10
Three-phase windings connection, current signal is sent to control chip after detect acquisition three-phase current respectively by three current sensors 50
30。
It is possible to further based on extension back-emf model Eex=ωe[ψf+(Ld-Lq)id]-(Ld-Lq)piqIt is straight to detect
The initial velocity ω of flow fan 100.Wherein, EexIndicate extension back-emf, ωeIndicate the revolving speed of DC fan 10, ψfIndicate rotor
Magnetic linkage, LdIndicate d axis (d-axis) inductance, LqIndicate q axis (quadrature axis) inductance, idIndicate d shaft current, p=d/dt indicates that differential is calculated
Son, iqIndicate q shaft current.Fig. 8 and Figure 20 are please referred to, according toWithIt is extended back-emf estimation and obtains the first estimation back-emfWith the second estimation back-emfSo
The angular deviation of calculation assumption rotating coordinate system and two-phase synchronous rotating frame afterwardsAnd then pass through locking phase
Ring calculates the initial velocity ω for obtaining DC fan 100(include estimation initial speedAnd directional information) and DC fan 10
The estimation electrical angle of rotorWherein, uδIndicate the 5th voltage, uγIndicate the 6th voltage, RsIndicate the resistance of DC fan 10,
iδIndicate the 5th electric current, iγIndicate the 6th electric current, eδIndicate the first back-emf, eγIndicate the second back-emf.
It in other words, can be according to the 5th voltage uδ, the 6th voltage uγ, the 5th electric current iδ, the 6th electric current iγIt is extended anti-electricity
Gesture is estimated to obtain it is assumed that first under rotating coordinate system estimates back-emfWith the second estimation back-emfThen according to first
The anti-electricity of estimationGesture and the second estimation back-emfThe angle of calculation assumption rotating coordinate system and two-phase synchronous rotating frame is inclined
Poor Δ θ；Phaselocked loop, which is carried out, further according to angular deviation Δ θ calculates the initial velocity for obtaining DC fan 10 (comprising estimating initial turn
SpeedAnd directional information) ω0With the estimation electrical angle of the rotor of DC fan 10
In one example, as the initial velocity ω of DC fan 100For positive number (i.e. initial velocity ω0Direction be positive)
When, indicate that the direction of rotation of DC fan 10 is (to indicate that DC fan 10 rotates forward) clockwise；At the beginning of DC fan 10
Beginning speed omega0For negative (i.e. initial velocity ω0Direction be negative) when, indicate DC fan 10 direction of rotation be counterclockwise side
To (indicating that DC fan 10 inverts).
The starting control method of the DC fan 10 of embodiment of the present invention, comprising:
Step S20: the initial velocity ω of DC fan 10 is determined0With the relationship of pre-set velocity threshold value.
Wherein, pre-set velocity threshold value includes First Speed threshold value ω1, second speed threshold value ω2, third speed threshold value ω3With
Fourth speed threshold value ω4.Wherein, First Speed threshold value ω1> second speed threshold value ω2> third speed threshold value ω3> fourth speed
Threshold value ω4.First Speed threshold value ω1With second speed threshold value ω2For positive number, third speed threshold value ω3With fourth speed threshold value ω4
For negative.In some embodiments, First Speed threshold value ω1With second speed threshold value ω2It can be understood as positive turn for positive number
Speed, third speed threshold value ω3With fourth speed threshold value ω4It can be understood as reverse speed for negative.
In some instances, First Speed threshold value ω1It can be between 300RPM or 400RPM or 300RPM~400RPM
A numerical value.Second speed threshold value ω2It can a numerical value between 40RPM or 50RPM or 40RPM~50RPM.The
Three threshold speed ω3It can a numerical value between -40RPM or -50RPM or -50RPM~-40RPM.Fourth speed threshold value
ω4It can a numerical value between -300RPM or -400RPM or -400RPM~-300RPM.Preferably, First Speed threshold
Value ω1With fourth speed threshold value ω4Absolute value it is identical, second speed threshold value ω2With third speed threshold value ω3Absolute value phase
Together.
Specifically, step S20 includes:
Step S22: judge initial velocity ω0Whether First Speed threshold value ω is greater than1.When initial speed omega0No more than first
Threshold speed ω1When, it enters step S24: judging initial velocity ω0Whether second speed threshold value ω is greater than2.When initial speed omega0
No more than second speed threshold value ω2When, it enters step S26: judging initial velocity ω0Whether third speed threshold value ω is greater than3.When
Initial velocity ω0No more than third speed threshold value ω3When, it enters step S28: judging initial velocity ω0Whether fourth speed is greater than
Threshold value ω4。
The starting control method of the DC fan 10 of embodiment of the present invention, comprising:
Step S30: according to the initial velocity ω of DC fan 100With the relationship of pre-set velocity threshold value, DC fan is controlled
10 enter different start-up modes.
Specifically, when initial speed omega0Greater than First Speed threshold value ω1When, enter step S32: control DC fan 10 into
Enter direct closed-loop start-up mode.When initial speed omega0Greater than second speed threshold value ω2And it is not more than First Speed threshold value ω1When,
Enter step S34: control DC fan 10 enters dynamic braking start-up mode.When initial speed omega0Greater than third speed threshold value
ω3And it is not more than second speed threshold value ω2When, enter step S36: control DC fan 10 enters normal positioning starting mode.When
Initial velocity ω0Greater than fourth speed threshold value ω4And it is not more than third speed threshold value ω3When, enter step S34: control direct current wind
Machine 10 enters dynamic braking start-up mode.When initial speed omega0No more than fourth speed threshold value ω4When, DC fan is detected again
10 initial velocity ω0, that is, step S10 is returned to, and control DC fan 10 and be waited for.
Referring to Fig. 10, first controlling DC fan 10 through overcurrent when DC fan 10 is in normal positioning starting mode
The position fixing process of injection, then control DC fan 10 and work as forward when DC fan 10 in open loop operation into open loop operation
After speed reaches switch speed threshold value, control DC fan 10 enters operation with closed ring.
Figure 21 is please referred to, in position fixing process, given d shaft current and given q shaft current are set, and fixed decoupling angle is set
Degree is run with determining the position of the rotor of DC fan 10 to control DC fan 10.Wherein, be arranged given d shaft current and
Given q shaft current refers to that given d shaft current and given q shaft current are given according to certain rule, such as d shaft current and q axis electricity
Stream is started from scratch respectively gradually rises up to setting value, then remains unchanged.The setting value of d shaft current and q shaft current can be identical,
It can also be different.In other embodiments, it is zero that given q shaft current, which can be set, in position fixing process, and given d shaft current is started from scratch
Gradually rise up to setting value；Or it is zero that given d shaft current, which can be set, given q shaft current, which is started from scratch, to be gradually risen up to set
Value.Decoupling angle is not zero.In the example of Figure 21, extension back-emf observation method can be used to estimate the magnetic linkage of DC fan 10
Angle and speed.
Figure 22 is please referred to, during open loop operation, given d shaft current and given q shaft current are set, and decoupling angle is set
Degree, so that the revolving speed of DC fan 10 increases.Wherein, given d shaft current is set and given q shaft current refers to given d axis electricity
Stream and given q shaft current are given according to certain rule, and e.g. it is constant to be maintained at setting value for d shaft current and q shaft current；In another example
It is d shaft current and q shaft current starts from scratch gradually rise up to setting value respectively, then remains unchanged.D shaft current and q shaft current
Setting value may be the same or different.In other embodiments, open loop operation process can be set given q shaft current and be
Zero, given d shaft current, which is started from scratch, gradually rises up to setting value；Or it is zero that given d shaft current, which can be set, gives q shaft current
Start from scratch and gradually rises up to setting value.Speed (decoupling angle at the time of the rate of change of decoupling angle terminates from position fixing process
The initial value of the rate of change of degree) start to be gradually lowered to zero.In the example of Figure 22, extension back-emf observation method can be used and come
Estimate magnetic linkage angle and the speed of DC fan 10.
Referring to Fig. 3, operation with closed ring includes current loop control and der Geschwindigkeitkreis control, using straight during operation with closed ring
The estimation electrical angle of flow fan 10It is decoupled, according to given rotating speedWith the estimation revolving speed of DC fan 10It is closed
Ring control, DC fan 10 is with the operation of certain revolving speed when operation with closed ring.For example, DC fan 10 is with given rotating speedOperation.
Figure 13 is please referred to, when DC fan 10 is in dynamic braking start-up mode, first control DC fan 10 passes through energy consumption
The process of braking, then DC fan 10 is controlled into open loop operation, in open loop operation, when the current rotating speed of DC fan 10 reaches
To after switch speed threshold value, control DC fan 10 enters operation with closed ring.In dynamic braking start-up mode, i.e. DC fan 10
There are when certain positive or reversed initial velocity, dynamic braking need to be first passed through.Dynamic braking process includes no-voltage braking and forces
Brake two processes.
In one embodiment, when control DC fan 10 enters dynamic braking start-up mode, DC fan is first controlled
10, which enter no-voltage, brakes；When no-voltage is braked so that the speed of DC fan 10 is greater than the 6th threshold speed ω6And it is not more than
5th threshold speed ω5When, control DC fan 10 enters forced brake.
Wherein, First Speed threshold value ω1> the five threshold speed ω5> the six threshold speed ω6> fourth speed threshold value ω4。
5th threshold speed ω5For positive number, the 6th threshold speed ω6For negative.5th threshold speed ω5It can be understood as just for positive number
To revolving speed, the 6th threshold speed ω6It can be understood as reverse speed for negative.In some instances, the 5th threshold speed ω5It can
Think a numerical value between 25RPM or 30RPM or 25RPM~30RPM.6th threshold speed ω6Can for -25RPM or -
A numerical value between 30RPM or -30RPM~-25RPM.Preferably, the 5th threshold speed ω5With the 6th threshold speed ω6's
Absolute value is identical.
In another embodiment, when control DC fan 10 enters dynamic braking start-up mode, direct current wind is first controlled
Machine 10 enters no-voltage and brakes；When no-voltage braking reaches second time threshold, control DC fan 10 enters forced brake.
In some instances, second time threshold can a numerical value between 1s or 10s or 1s~10s.
Figure 23 is please referred to, no-voltage braking includes: the fixed decoupling angle of setting and setting output d shaft voltage and q shaft voltage
It is zero；The upper bridge arms of control three are simultaneously turned on to be simultaneously turned off with three lower bridge arms, or control three upper bridge arms simultaneously turn off and
Three lower bridge arms simultaneously turn on, so that DC fan 10 is in the working condition of three-phase windings short circuit.
In this way, can be generated electricity by the revolving speed of DC fan 10 itself, so that being generated on the three-phase windings of DC fan 10
Generation current is to realize dynamic braking.No-voltage braking braking moment is big, and faster, than zero current braking, (zero current is braked for braking
It is the rotor mechanical friction by DC fan, does not generate braking moment) effect is good.In one example, fixed decoupling angle is set
It is set to zero.In the example of Figure 23, extension back-emf observation method can be used to estimate magnetic linkage angle and the speed of DC fan 10.
Figure 24 is please referred to, forced brake includes: that given d shaft current and q shaft current is arranged and forces setting decoupling angle；It will
The rate of change of decoupling angle is gradually lowered to zero since the speed for the DC fan 10 that the no-voltage end of braking moment obtains.
It is appreciated that the given d shaft current of setting and given q shaft current refer to given d shaft current and given q shaft current
It is given according to certain rule, such as d shaft current and q shaft current start from scratch gradually rise up to setting value respectively, then keeps not
Become.The setting value of d shaft current and q shaft current may be the same or different.In other embodiments, forced brake process can
It is zero so that given q shaft current is arranged, given d shaft current, which is started from scratch, gradually rises up to setting value；Or given d axis electricity can be set
Stream is zero, and given q shaft current, which is started from scratch, gradually rises up to setting value.The rate of change for decoupling angle indicates angular speed.Zero
When voltage end of braking, the speed of DC fan 10 can be obtained by estimation.Setting decoupling angle is forced, no-voltage is being terminated
When braking enters forced brake, the speed for the DC fan 10 that the no-voltage end of braking moment is obtained is as the change of decoupling angle
Change the initial value of rate, the rate of change for decoupling angle is gradually lowered to zero since initial value.In the example of Figure 24, it can adopt
Magnetic linkage angle and the speed of DC fan 10 are estimated with extension back-emf observation method.
It should be noted that decoupling angle is the angle for being used to decouple in the vector controlled of DC fan.
Figure 16 is please referred to, when DC fan 10 is in direct closed-loop start-up mode, control DC fan 10 enters closed loop and transports
Row.Specifically, in direct closed-loop start-up mode, i.e., closed loop fortune is cut directly into when the forward rotational speed of DC fan 10 is higher
Row, needs not move through position fixing process and open loop operation.
In some instances, switch speed threshold value can be between 100RPM or 600RPM or 100RPM~600RPM
One numerical value.
The starting control method of the DC fan 10 of above embodiment, the extension back-emf observation based on zero current injection
Method estimates the initial velocity of DC fan 10, can automatically identify the initial velocity ω of DC fan 100(including directional information).Into
One step, according to different initial velocity ω0It controls DC fan 10 and enters different start-up modes, DC fan 10 can be improved
Starting success rate at weather anomaly (blowing and raining) reduces failure exception, improves user experience.
Particularly, based on zero current injection extension back-emf observation method is insensitive to electric current signal to noise ratio and its phaselocked loop sheet
Body has filtering characteristic, avoids electric current signal to noise ratio difference and causes the problem of initial velocity estimation exception.
Figure 25 is please referred to, the starting control device 100 of the DC fan 10 of embodiment of the present invention includes detection module
110, comparison module 120 and control module 130.Detection module 110 is used to inject based on zero current, detects the first of DC fan 10
Beginning speed omega0.Comparison module 120 is used to determine the initial velocity ω of DC fan 100With the relationship of pre-set velocity threshold value.Control
Module 130 is used for the initial velocity ω according to DC fan 100With the relationship of pre-set velocity threshold value, controls DC fan 10 and enter
Different start-up modes.
In other words, the starting control method of the DC fan 10 of above embodiment can be by the direct current of present embodiment
The starting control device 100 of blower 10 is realized.Wherein, step S10 can be realized by detection module 110, step S20 can by than
It is realized compared with module 120, step S30 can be realized by control module 130.
In the starting control device 100 of the DC fan 10 of above embodiment, based on zero current injection estimation direct current wind
The initial velocity of machine 10 can automatically identify the initial velocity ω of DC fan 100(including directional information).Further, according to
Different initial velocity ω0It controls DC fan 10 and enters different start-up modes, DC fan 10 can be improved in weather anomaly
Starting success rate in the case of (blowing and raining) reduces failure exception, improves user experience.
Fig. 1 and Figure 25 are please referred to, in one embodiment, control shown in Fig. 1 can be set in starting control device 100
In coremaking piece 30, it can be understood as starting control device 100 is integrated in control chip 30.In other words, detection module 110,
Comparison module 120 and control module 130 can be fully integrated into control chip 30.In other embodiments, starting control dress
Setting 100 a part can be integrated in control chip, another part of starting control device 100 may be provided at other chip or
In device.In other embodiments, starting control device 100 can also be fabricated to individual chip or device, straight for controlling
The starting of flow fan 10.
It should be noted that the explanation of the starting control method of the DC fan 10 of above embodiment and beneficial effect
Fruit is also applied for the starting control device 100 of the DC fan 10 of present embodiment, to avoid redundancy, no longer exhibition in detail herein
It opens.
In some embodiments, pre-set velocity threshold value includes First Speed threshold value ω1, second speed threshold value ω2, third
Threshold speed ω3With fourth speed threshold value ω4.Control module 130 is used to work as initial speed omega0Greater than First Speed threshold value ω1
When, control DC fan 10 enters direct closed-loop start-up mode；Or work as initial speed omega0Greater than second speed threshold value ω2And not
Greater than First Speed threshold value ω1When, control DC fan 10 enters dynamic braking start-up mode；Or work as initial speed omega0It is greater than
Third speed threshold value ω3And it is not more than second speed threshold value ω2When, control DC fan 10 enters normal positioning starting mode；Or
Person works as initial speed omega0Greater than fourth speed threshold value ω4And it is not more than third speed threshold value ω3When, control DC fan 10 enters
Dynamic braking start-up mode；Or work as initial speed omega0No more than fourth speed threshold value ω4When, DC fan 10 is detected again
Initial velocity ω0, and control DC fan 10 and be waited for.Wherein, First Speed threshold value ω1> second speed threshold value ω2>
Third speed threshold value ω3> fourth speed threshold value ω4；First Speed threshold value ω1With second speed threshold value ω2For positive number, third speed
Spend threshold value ω3With fourth speed threshold value ω4For negative.
In some embodiments, control module 130 is used to first control when DC fan 10 is in normal positioning starting mode
The position fixing process that DC fan 10 processed is injected through overcurrent, then control DC fan 10 and enter open loop operation, in open loop operation,
After the current rotating speed of DC fan 10 reaches switch speed threshold value, control DC fan 10 enters operation with closed ring.Or control
Module 130 is used for when DC fan 10 is in dynamic braking start-up mode, first controls mistake of the DC fan 10 Jing Guo dynamic braking
Journey, then DC fan 10 is controlled into open loop operation, in open loop operation, when the current rotating speed of DC fan 10 reaches switching speed
After spending threshold value, control DC fan 10 enters operation with closed ring.Or control module 130 is used for when DC fan 10 is in direct closed loop
When start-up mode, control DC fan 10 enters operation with closed ring.
It in some embodiments, include the flux observation method based on zero current injection based on zero current injection.When being based on
Zero current injection, detects the initial velocity ω of DC fan 100When, detection module 110 is for being arranged given d shaft current and giving
Q shaft current is zero and continues first time threshold to obtain the first voltage u under two-phase stationary coordinate systemαAnd second voltage
uβ；Handle first voltage uαWith second voltage uβAnd PWM waveform is exported to drive DC fan 10；Obtain the three of DC fan 10
Phase current (iA、iBAnd iC) and the first electric current i under two-phase stationary coordinate system is calculated according to three-phase currentαWith the second electric current iβ；
And first voltage u is utilized according to flux observation methodα, second voltage uβ, the first electric current iαWith the second electric current iβCalculate DC fan
Initial velocity ω0。
In some embodiments, detection module 110 is used for according to first voltage uα, second voltage uβ, the first electric current iα、
Second electric current iβ, DC fan 10 resistance RsAnd d axle inductance LqWith q axle inductance LdIt carries out flux estimator and obtains the first estimation
Magnetic linkageWith the second estimation magnetic linkageAnd according to the first estimation magnetic linkageWith the second estimation magnetic linkagePhaselocked loop calculating is carried out to obtain
Obtain the initial velocity ω of DC fan 100。
In some embodiments, detection module 110 is used for according to the first electric current iαWith the second electric current iβCalculate d axis feedback
Electric current id；According to d axis feedback current id, d axle inductance Ld, q axle inductance LqAnd rotor flux ψfCalculate active magnetic linkage ψa；And according to
First estimation magnetic linkageWith the second estimation magnetic linkageAnd active magnetic linkage ψaIt carries out phaselocked loop and calculates turn for obtaining DC fan 10
The estimation electrical angle of son
It in some embodiments, include the extension back-emf observation method based on zero current injection based on zero current injection.
It is injected when based on zero current, detects the initial velocity ω of DC fan 100When, detection module 110 is for being arranged given d shaft current
It is zero with given q shaft current and continues first time threshold to obtain the tertiary voltage u under two-phase synchronous rotating framedWith
Four voltage uq；Handle tertiary voltage udWith the 4th voltage uqAnd PWM waveform is exported to drive DC fan 10；Obtain DC fan
10 three-phase current (iA、iBAnd iC) and third electric current i in the two-phase synchronous rotating coordinate system is calculated according to three-phase currentdWith
4th electric current iq；By tertiary voltage udWith the 4th voltage uqAs the 5th voltage u assumed under rotating coordinate systemδWith the 6th voltage
uγ, by third electric current idWith the 4th electric current iqAs the 5th electric current i assumed under rotating coordinate systemδWith the 6th electric current iγ；And according to
It extends back-emf observation method and utilizes the 5th voltage uδ, the 6th voltage uγ, the 5th electric current iδWith the 6th electric current iγCalculate DC fan
Initial velocity ω0。
In some embodiments, detection module 110 is used for according to the 5th voltage uδ, the 6th voltage uγ, the 5th electric current iδ、
6th electric current iγBack-emf is extended to estimate to obtain it is assumed that first under rotating coordinate system estimates back-emfEstimate with second
Count back-emfAccording to the anti-electricity of the first estimationGesture and the second estimation back-emfCalculation assumption rotating coordinate system and two is synchronised
The angular deviation Δ θ of rotating coordinate system；And the initial speed that phaselocked loop calculates acquisition DC fan 10 is carried out according to angular deviation Δ θ
Spend ω0With the estimation electrical angle of the rotor of DC fan 10
In some embodiments, detection module 110 connects current sensor 50.Current sensor 50 is for detecting direct current
The bus current of blower 10, detection module 110 is for obtaining the bus current of DC fan 10 and according to the mother of DC fan 10
The three-phase current of line current calculating DC fan 10.Or current sensor 50 is used to detect the biphase current of DC fan 10,
Detection module 110 is used to obtain the biphase current of DC fan 10 and calculates DC fan according to the biphase current of DC fan 10
10 three-phase current.Or current sensor 50 is used to detect the three-phase current of DC fan 10, detection module 110 is for obtaining
The three-phase current of DC fan 10.
Please refer to Figure 26, the outdoor unit 1100 of embodiment of the present invention, including DC fan 10 and any of the above-described embodiment party
The starting control device 100 of the DC fan 10 of formula.
In the outdoor unit 1100 of above embodiment, the initial velocity of estimation DC fan 10 is injected based on zero current, it can be certainly
The dynamic initial velocity ω for identifying DC fan 100(including directional information).Further, according to different initial velocity ω0Control
DC fan 10 processed enters different start-up modes, and the opening at weather anomaly (blowing and raining) of DC fan 10 can be improved
Dynamic success rate, reduces failure exception, improves user experience.
It should be noted that the starting control method and starting control device 100 of the DC fan 10 of above embodiment
Explanation and beneficial effect be also applied for the outdoor unit 1100 of present embodiment, to avoid redundancy, no longer exhibition in detail herein
It opens.
Please refer to Figure 26, the air conditioner 1000 of embodiment of the present invention, including above-mentioned DC fan 10 and any of the above-described reality
Apply the starting control device 100 of the DC fan 10 of mode.In other words, air conditioner 1000 includes the outdoor of above embodiment
Machine 1100, outdoor unit 1100 include the starting control device 100 of DC fan 10 and DC fan 10.
In the air conditioner 1000 of above embodiment, the initial velocity of estimation DC fan 10 is injected based on zero current, it can be certainly
The dynamic initial velocity ω for identifying DC fan 100(including directional information).Further, according to different initial velocity ω0Control
DC fan 10 processed enters different start-up modes, and the opening at weather anomaly (blowing and raining) of DC fan 10 can be improved
Dynamic success rate, reduces failure exception, improves user experience.
It should be noted that the starting control method and starting control device 100 of the DC fan 10 of above embodiment
Explanation and beneficial effect be also applied for the air conditioner 1000 of present embodiment, to avoid redundancy, no longer exhibition in detail herein
It opens.
Specifically, air conditioner 1000 further includes indoor unit 1200, and outdoor unit 1100 connects indoor unit 1200.In an example
In, air conditioner 1000 can be transducer air conditioning.
It is appreciated that in some embodiments, indoor unit 1200 may also set up DC fan 10 and any of the above-described reality
Apply the starting control device 100 of the DC fan 10 of mode.
In some embodiments, when outdoor unit 1100 has DC fan 10, the starting of DC fan 10 controls dress
It is mountable on outdoor unit 1100 to set 100, or is mounted on indoor unit 1200, or a part installation of starting control device 100
In outdoor unit 1100, the another part for starting control device 100 is mounted on indoor unit 1200, start control device 100 this two
Part can it is wired or wireless or it is wired and wireless combine by way of communicated.
In some embodiments, when indoor unit 1200 has DC fan 10, the starting of DC fan 10 controls dress
It sets on 100 mountable machines indoors 1200, or is mounted on outdoor unit 1100, or a part installation of starting control device 100
In outdoor unit 1100, the another part for starting control device 100 is mounted on indoor unit 1200, start control device 100 this two
Part can it is wired or wireless or it is wired and wireless combine by way of communicated.
In addition, starting control device 100 can be by wired or wireless or wired and wireless combine with DC fan 10
Mode carries out communication control.
In the description of embodiments of the present invention, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include one or more feature.In embodiments of the present invention
In description, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected or can mutually communicate；It can be directly connected, can also lead to
It crosses intermediary to be indirectly connected, can be the connection inside two elements or the interaction relationship of two elements.For ability
For the those of ordinary skill in domain, can understand as the case may be above-mentioned term in embodiments of the present invention specifically contain
Justice.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implementation
The description of mode ", " example ", specific examples or " some examples " etc. means the tool described in conjunction with the embodiment or example
Body characteristics, structure, material or feature are contained at least one embodiment or example of the invention.In the present specification,
Schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific features of description, knot
Structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processing module or other can be from instruction
Execute system, device or equipment instruction fetch and the system that executes instruction) use, or combine these instruction execution systems, device or
Equipment and use.For the purpose of this specification, " computer-readable medium " can be it is any may include, store, communicating, propagating or
Transfer program uses for instruction execution system, device or equipment or in conjunction with these instruction execution systems, device or equipment
Device.The more specific example (non-exhaustive list) of computer-readable medium include the following: there are one or more wirings
Electrical connection section (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of embodiments of the present invention can be with hardware, software, firmware or their combination come real
It is existing.In the above-described embodiment, multiple steps or method can be with storages in memory and by suitable instruction execution system
The software or firmware of execution is realized.For example, if realized with hardware, in another embodiment, ability can be used
Any one of following technology or their combination well known to domain is realized: being had for realizing logic function to data-signal
The discrete logic of logic gates, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array
(PGA), field programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
In addition, each functional unit in various embodiments of the present invention can integrate in a processing module, it can also
To be that each unit physically exists alone, can also be integrated in two or more units in a module.It is above-mentioned integrated
Module both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module
If in the form of software function module realize and when sold or used as an independent product, also can store one calculating
In machine read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (26)
1. a kind of starting control method of DC fan characterized by comprising
It is injected based on zero current, detects the initial velocity of the DC fan；
Determine the initial velocity of the DC fan and the relationship of pre-set velocity threshold value；
According to the relationship of the initial velocity of the DC fan and the pre-set velocity threshold value, controls the DC fan and enter not
Same start-up mode.
2. starting control method as described in claim 1, which is characterized in that the pre-set velocity threshold value includes First Speed threshold
Value controls the DC fan and enters not according to the relationship of the initial velocity of the DC fan and the pre-set velocity threshold value
Same start-up mode, comprising:
When the initial velocity is greater than the First Speed threshold value, the DC fan is controlled into direct closed-loop start-up mould
Formula；
Wherein, the First Speed threshold value is positive number.
3. starting control method as claimed in claim 2, which is characterized in that the pre-set velocity threshold value includes second speed threshold
Value controls the DC fan and enters not according to the relationship of the initial velocity of the DC fan and the pre-set velocity threshold value
Same start-up mode, comprising:
When the initial velocity is greater than the second speed threshold value and is not more than the First Speed threshold value, the direct current is controlled
Blower enters dynamic braking start-up mode；
Wherein, the First Speed threshold value > second speed threshold value, the second speed threshold value are positive number.
4. starting control method as claimed in claim 3, which is characterized in that the pre-set velocity threshold value includes third speed threshold
Value controls the DC fan and enters not according to the relationship of the initial velocity of the DC fan and the pre-set velocity threshold value
Same start-up mode, comprising:
When the initial velocity is greater than the third speed threshold value and is not more than the second speed threshold value, the direct current is controlled
Blower enters normal positioning starting mode；
Wherein, the second speed threshold value > third speed threshold value, the third speed threshold value are negative.
5. starting control method as claimed in claim 4, which is characterized in that the pre-set velocity threshold value includes fourth speed threshold
Value controls the DC fan and enters not according to the relationship of the initial velocity of the DC fan and the pre-set velocity threshold value
Same start-up mode, comprising:
When the initial velocity is greater than the fourth speed threshold value and is not more than the third speed threshold value, the direct current is controlled
Blower enters the dynamic braking start-up mode；
When the initial velocity is not more than the fourth speed threshold value, the initial velocity of the DC fan is detected again, and
The DC fan is controlled to be waited for；
Wherein, the third speed threshold value > fourth speed threshold value；The fourth speed threshold value is negative.
6. starting control method as claimed in claim 5, which is characterized in that the starting control method includes:
When the DC fan is in the normal positioning starting mode, first controls the DC fan and determine through what overcurrent was injected
Position process, then control the DC fan and enter open loop operation, in open loop operation, when the current rotating speed of the DC fan reaches
To after switch speed threshold value, controls the DC fan and enter operation with closed ring；
When the DC fan is in the dynamic braking start-up mode, mistake of the DC fan Jing Guo dynamic braking is first controlled
Journey, then control the DC fan and enter open loop operation, in open loop operation, when the current rotating speed of the DC fan reaches institute
After stating switch speed threshold value, controls the DC fan and enter operation with closed ring；
When the DC fan is in the direct closed-loop start-up mode, controls the DC fan and enter operation with closed ring.
7. starting control method as described in claim 1, which is characterized in that described injected based on zero current includes based on zero electricity
The flux observation method for flowing injection is injected when based on zero current, when detecting the initial velocity of the DC fan, the starting control
Method includes:
Given d shaft current is set and given q shaft current is zero and continues first time threshold to obtain in two-phase static coordinate
First voltage and second voltage under system；
It handles the first voltage and the second voltage and exports PWM waveform to drive the DC fan；
It obtains the three-phase current of the DC fan and is calculated under the two-phase stationary coordinate system according to the three-phase current
First electric current and the second electric current；
The first voltage, the second voltage, first electric current and second electricity are utilized according to the flux observation method
The initial velocity of DC fan described in stream calculation.
8. starting control method as claimed in claim 7, which is characterized in that utilize described first according to the flux observation method
Voltage, the second voltage, first electric current and second electric current calculate the initial velocity of the DC fan, comprising:
According to the first voltage, the second voltage, first electric current, second electric current, the DC fan electricity
Resistance and d axle inductance and q axle inductance carry out flux estimator and obtain the first estimation magnetic linkage and the second estimation magnetic linkage；
Estimate that magnetic linkage and the second estimation magnetic linkage carry out phaselocked loop and calculate the first of the acquisition DC fan according to described first
Beginning speed.
9. starting control method as claimed in claim 8, which is characterized in that the starting control method includes:
D axis feedback current is calculated according to first electric current and second electric current；
Active magnetic linkage is calculated according to the d axis feedback current, the d axle inductance, the q axle inductance and rotor flux；
Phaselocked loop, which is carried out, according to the first estimation magnetic linkage and the second estimation magnetic linkage and the active magnetic linkage calculates acquisition
The estimation electrical angle of the rotor of the DC fan.
10. starting control method as described in claim 1, which is characterized in that described injected based on zero current includes being based on zero
The extension back-emf observation method of electric current injection, is injected when based on zero current, described when detecting the initial velocity of the DC fan
Starting control method includes:
Given d shaft current is set and given q shaft current is zero and continues first time threshold to obtain in two-phase synchronous rotary
Tertiary voltage and the 4th voltage under coordinate system；
It handles the tertiary voltage and the 4th voltage and exports PWM waveform to drive the DC fan；
It obtains the three-phase current of the DC fan and is calculated according to the three-phase current in the two-phase synchronous rotating frame
Under third electric current and the 4th electric current；
Using the tertiary voltage and the 4th voltage as the 5th voltage and the 6th voltage assumed under rotating coordinate system, by institute
Third electric current and the 4th electric current are stated as the 5th electric current and the 6th electric current under the hypothesis rotating coordinate system；
The 5th voltage, the 6th voltage, the 5th electric current and described are utilized according to the extension back-emf observation method
6th electric current calculates the initial velocity of the DC fan.
11. starting control method as claimed in claim 10, which is characterized in that utilized according to the extension back-emf observation method
5th voltage, the 6th voltage, the 5th electric current and the 6th electric current calculate the initial speed of the DC fan
Degree, comprising:
Back-emf estimation is extended according to the 5th voltage, the 6th voltage, the 5th electric current, the 6th electric current
Obtain the first estimation back-emf and the second estimation back-emf under the hypothesis rotating coordinate system；
The hypothesis rotating coordinate system and described two are calculated according to the first estimation back-emf and the second estimation back-emf
Be synchronised the angular deviation of rotating coordinate system；
The initial velocity and the DC fan for obtaining the DC fan are calculated according to angular deviation progress phaselocked loop
The estimation electrical angle of rotor.
12. the starting control method as described in claim 7 or 10, which is characterized in that obtain the three-phase electricity of the DC fan
Stream, including following one of which:
The bus current of the DC fan is detected, and the DC fan is calculated according to the bus current of the DC fan
Three-phase current；
The biphase current of the DC fan is detected, and the DC fan is calculated according to the biphase current of the DC fan
Three-phase current；
Detect the three-phase current of the DC fan.
13. a kind of starting control device of DC fan characterized by comprising
Detection module, the detection module are used to inject based on zero current, detect the initial velocity of the DC fan；
Comparison module, the comparison module are used to determine the initial velocity of the DC fan and the relationship of pre-set velocity threshold value；
Control module, the control module are used for the pass of initial velocity and the pre-set velocity threshold value according to the DC fan
System, controls the DC fan and enters different start-up modes.
14. starting control device as claimed in claim 13, which is characterized in that the pre-set velocity threshold value includes First Speed
Threshold value, the control module are used for:
When the initial velocity is greater than the First Speed threshold value, the DC fan is controlled into direct closed-loop start-up mould
Formula；
Wherein, the First Speed threshold value is positive number.
15. starting control device as claimed in claim 14, which is characterized in that the pre-set velocity threshold value includes second speed
Threshold value, the control module are used for:
When the initial velocity is greater than the second speed threshold value and is not more than the First Speed threshold value, the direct current is controlled
Blower enters dynamic braking start-up mode；
Wherein, the First Speed threshold value > second speed threshold value, the second speed threshold value are positive number.
16. starting control device as claimed in claim 15, which is characterized in that the pre-set velocity threshold value includes third speed
Threshold value, the control module are used for:
When the initial velocity is greater than the third speed threshold value and is not more than the second speed threshold value, the direct current is controlled
Blower enters normal positioning starting mode；
Wherein, the second speed threshold value > third speed threshold value, the third speed threshold value are negative.
17. starting control device as claimed in claim 16, which is characterized in that the pre-set velocity threshold value includes fourth speed
Threshold value, the control module are used for:
When the initial velocity is greater than the fourth speed threshold value and is not more than the third speed threshold value, the direct current is controlled
Blower enters the dynamic braking start-up mode；
When the initial velocity is not more than the fourth speed threshold value, the initial velocity of the DC fan is detected again, and
The DC fan is controlled to be waited for；
Wherein, the third speed threshold value > fourth speed threshold value；The fourth speed threshold value is negative.
18. starting control device as claimed in claim 17, which is characterized in that the control module is used for:
When the DC fan is in the normal positioning starting mode, first controls the DC fan and determine through what overcurrent was injected
Position process, then control the DC fan and enter open loop operation, in open loop operation, when the current rotating speed of the DC fan reaches
To after switch speed threshold value, controls the DC fan and enter operation with closed ring；
When the DC fan is in the dynamic braking start-up mode, mistake of the DC fan Jing Guo dynamic braking is first controlled
Journey, then control the DC fan and enter open loop operation, in open loop operation, when the current rotating speed of the DC fan reaches institute
After stating switch speed threshold value, controls the DC fan and enter operation with closed ring；
When the DC fan is in the direct closed-loop start-up mode, controls the DC fan and enter operation with closed ring.
19. starting control device as claimed in claim 13, which is characterized in that described injected based on zero current includes being based on zero
The flux observation method of electric current injection, is injected when based on zero current, when detecting the initial velocity of the DC fan, the detection mould
Block is used for:
Given d shaft current is set and given q shaft current is zero and continues first time threshold to obtain in two-phase static coordinate
First voltage and second voltage under system；
It handles the first voltage and the second voltage and exports PWM waveform to drive the DC fan；
It obtains the three-phase current of the DC fan and is calculated under the two-phase stationary coordinate system according to the three-phase current
First electric current and the second electric current；
The first voltage, the second voltage, first electric current and second electricity are utilized according to the flux observation method
The initial velocity of DC fan described in stream calculation.
20. starting control device as claimed in claim 19, which is characterized in that the detection module is used for:
According to the first voltage, the second voltage, first electric current, second electric current, the DC fan electricity
Resistance and d axle inductance and q axle inductance carry out flux estimator and obtain the first estimation magnetic linkage and the second estimation magnetic linkage；
Estimate that magnetic linkage and the second estimation magnetic linkage carry out phaselocked loop and calculate the first of the acquisition DC fan according to described first
Beginning speed.
21. starting control device as claimed in claim 20, which is characterized in that the detection module is used for:
D axis feedback current is calculated according to first electric current and second electric current；
Active magnetic linkage is calculated according to the d axis feedback current, the d axle inductance, the q axle inductance and rotor flux；
Phaselocked loop, which is carried out, according to the first estimation magnetic linkage and the second estimation magnetic linkage and the active magnetic linkage calculates acquisition
The estimation electrical angle of the rotor of the DC fan.
22. starting control device as claimed in claim 13, which is characterized in that described injected based on zero current includes being based on zero
The extension back-emf observation method of electric current injection, is injected when based on zero current, described when detecting the initial velocity of the DC fan
Detection module is used for:
Given d shaft current is set and given q shaft current is zero and continues first time threshold to obtain in two-phase synchronous rotary
Tertiary voltage and the 4th voltage under coordinate system；
It handles the tertiary voltage and the 4th voltage and exports PWM waveform to drive the DC fan；
It obtains the three-phase current of the DC fan and is calculated according to the three-phase current in the two-phase synchronous rotating frame
Under third electric current and the 4th electric current；
Using the tertiary voltage and the 4th voltage as the 5th voltage and the 6th voltage assumed under rotating coordinate system, by institute
Third electric current and the 4th electric current are stated as the 5th electric current and the 6th electric current under the hypothesis rotating coordinate system；
The 5th voltage, the 6th voltage, the 5th electric current and described are utilized according to the extension back-emf observation method
6th electric current calculates the initial velocity of the DC fan.
23. starting control device as claimed in claim 22, which is characterized in that the detection module is used for:
Back-emf estimation is extended according to the 5th voltage, the 6th voltage, the 5th electric current, the 6th electric current
Obtain the first estimation back-emf and the second estimation back-emf under the hypothesis rotating coordinate system；
The hypothesis rotating coordinate system and described two are calculated according to the first estimation back-emf and the second estimation back-emf
Be synchronised the angular deviation of rotating coordinate system；
The initial velocity and the DC fan for obtaining the DC fan are calculated according to angular deviation progress phaselocked loop
The estimation electrical angle of rotor.
24. the starting control device as described in claim 19 or 22, which is characterized in that the detection module connects current sense
Device, the current sensor are used to detect the bus current of the DC fan, and the detection module is for obtaining the direct current
The bus current of blower and the three-phase current that the DC fan is calculated according to the bus current of the DC fan；Or
The current sensor is used to detect the biphase current of the DC fan, and the detection module is for obtaining the direct current
The biphase current of blower and the three-phase current that the DC fan is calculated according to the biphase current of the DC fan；Or
The current sensor is used to detect the three-phase current of the DC fan, and the detection module is for obtaining the direct current
The three-phase current of blower.
25. a kind of outdoor unit, which is characterized in that including DC fan and the described in any item DC fans of claim 13-24
Starting control device.
26. a kind of air conditioner, which is characterized in that including DC fan and the described in any item DC fans of claim 13-24
Starting control device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811115561.0A CN109185191B (en) | 2018-09-25 | 2018-09-25 | Start control method and device of direct current fan, outdoor unit and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811115561.0A CN109185191B (en) | 2018-09-25 | 2018-09-25 | Start control method and device of direct current fan, outdoor unit and air conditioner |
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| CN109185191B CN109185191B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811115561.0A Active CN109185191B (en) | 2018-09-25 | 2018-09-25 | Start control method and device of direct current fan, outdoor unit and air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260484A (en) * | 2019-06-17 | 2019-09-20 | 珠海格力电器股份有限公司 | Control method, apparatus, computer readable storage medium and the air-conditioning of blower starting |
| CN111030538A (en) * | 2019-12-18 | 2020-04-17 | 吉林大学 | Fan state parameter detection method and device, storage medium and electronic device |
| CN112943671A (en) * | 2021-04-12 | 2021-06-11 | 青岛海信日立空调系统有限公司 | Air conditioner |
| CN114204865A (en) * | 2020-09-17 | 2022-03-18 | 北京金风科创风电设备有限公司 | Method and device for estimating electrical angular velocity of permanent magnet synchronous generator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296793A (en) * | 1986-11-05 | 1994-03-22 | Massachusetts Institute Of Technology | State observer for synchronous motors |
| CN101106338A (en) * | 2006-07-14 | 2008-01-16 | 上海神源电气有限公司 | Bidirectional power flow efficient energy saving converter |
| CN104113242A (en) * | 2013-06-18 | 2014-10-22 | 广东美的制冷设备有限公司 | Starting method for DC blower of unposition sensor and DC blower controller |
| CN108258967A (en) * | 2018-02-27 | 2018-07-06 | 江苏大学 | A kind of magneto based on novel flux observer is without position Direct Torque Control |
-
2018
- 2018-09-25 CN CN201811115561.0A patent/CN109185191B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296793A (en) * | 1986-11-05 | 1994-03-22 | Massachusetts Institute Of Technology | State observer for synchronous motors |
| CN101106338A (en) * | 2006-07-14 | 2008-01-16 | 上海神源电气有限公司 | Bidirectional power flow efficient energy saving converter |
| CN104113242A (en) * | 2013-06-18 | 2014-10-22 | 广东美的制冷设备有限公司 | Starting method for DC blower of unposition sensor and DC blower controller |
| CN108258967A (en) * | 2018-02-27 | 2018-07-06 | 江苏大学 | A kind of magneto based on novel flux observer is without position Direct Torque Control |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260484A (en) * | 2019-06-17 | 2019-09-20 | 珠海格力电器股份有限公司 | Control method, apparatus, computer readable storage medium and the air-conditioning of blower starting |
| CN110260484B (en) * | 2019-06-17 | 2020-12-15 | 珠海格力电器股份有限公司 | Method and device for controlling starting of fan, computer readable storage medium and air conditioner |
| CN111030538A (en) * | 2019-12-18 | 2020-04-17 | 吉林大学 | Fan state parameter detection method and device, storage medium and electronic device |
| CN111030538B (en) * | 2019-12-18 | 2021-09-03 | 吉林大学 | Fan state parameter detection method and device, storage medium and electronic device |
| CN114204865A (en) * | 2020-09-17 | 2022-03-18 | 北京金风科创风电设备有限公司 | Method and device for estimating electrical angular velocity of permanent magnet synchronous generator |
| CN114204865B (en) * | 2020-09-17 | 2023-06-13 | 北京金风科创风电设备有限公司 | Method and equipment for estimating electric angular velocity of permanent magnet synchronous generator |
| CN112943671A (en) * | 2021-04-12 | 2021-06-11 | 青岛海信日立空调系统有限公司 | Air conditioner |
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|---|---|
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