CN106849807A - Blower motor and its startup method and apparatus - Google Patents
Blower motor and its startup method and apparatus Download PDFInfo
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- CN106849807A CN106849807A CN201611255569.8A CN201611255569A CN106849807A CN 106849807 A CN106849807 A CN 106849807A CN 201611255569 A CN201611255569 A CN 201611255569A CN 106849807 A CN106849807 A CN 106849807A
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Abstract
The invention discloses a kind of blower motor and its startup method and apparatus, the described method comprises the following steps：The open loop operation time of speed ring and the given value of current amplitude during speed ring open loop operation when obtaining electric motor starting；Speed preset value during open loop operation time acquisition speed ring open loop operation according to speed ring；In electric motor starting, the rotor-position of motor is calculated according to speed preset value, and speed ring opened loop control is carried out to motor according to given value of current amplitude and rotor-position, until when the opened loop control time reaches the open loop operation time, controlled motor carries out speed ring operation with closed ring.It is applied widely to machine saliency no requirement (NR) so as under conditions of position-sensor-free, realize the quick startup of motor, and start-up course noiselessness.
Description
Technical field
The present invention relates to technical field of motors, the startup method of more particularly to a kind of blower motor, a kind of blower motor
Starter and a kind of blower motor with the device.
Background technology
Development and maturation with vector frequency conversion control technology, increasing equipment are equipped with variable frequency drives to drive
Motor operation.For example, indoor set and outdoor unit, lampblack absorber, air blower of domestic air conditioning etc..However, being used in variable frequency drives
When position-sensor-free carries out vector controlled, rotor position during static and Ultra-Low Speed cannot be effectively observed due to speed observer
Put, so that Starting mode turns into technical research focus.
In correlation technique, the Starting mode for position-sensor-free mainly includes：Pre-determined bit open loop drawing method, high frequency note
Enter method, voltage vector impulse method etc..But various limitations can be present in these methods, wherein, the startup of pre-determined bit open loop drawing method
Time is more long, and high-frequency signal injection can produce certain noise in start-up course, and voltage vector impulse method is to the saliency of motor
It is required that substantially.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, a kind of startup method it is an object of the present invention to propose blower motor, can be in position sensorless
Under conditions of device, the quick startup of motor, and start-up course noiselessness are realized, it is applied widely to machine saliency no requirement (NR).
It is another object of the present invention to propose a kind of starter of blower motor.
A further object of the present invention is to propose a kind of blower motor.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of startup method of blower motor, including with
Lower step：The open loop operation time of speed ring and the given value of current width during speed ring open loop operation when obtaining electric motor starting
Value；The open loop operation time according to the speed ring obtains the speed preset value during speed ring open loop operation；In the electricity
When machine starts, the rotor-position of the motor is calculated according to the speed preset value, and according to the given value of current amplitude and institute
State rotor-position carries out speed ring opened loop control to the motor, until the opened loop control time reaches the open loop operation time
When, control the motor to carry out speed ring operation with closed ring.
The startup method of blower motor according to embodiments of the present invention, the open loop fortune of speed ring when obtaining electric motor starting first
Given value of current amplitude when row time and speed ring open loop operation, and opened according to the open loop operation time acquisition speed ring of speed ring
Speed preset value during inscription of loop.In electric motor starting, the rotor-position of motor is calculated according to speed preset value, and according to electric current
Given amplitude and rotor-position carry out speed ring opened loop control to motor, until the opened loop control time reaches the open loop operation time
When, controlled motor carries out speed ring operation with closed ring.So as under conditions of position-sensor-free, realize the quick startup of motor,
And start-up course noiselessness, it is applied widely to machine saliency no requirement (NR).
According to one embodiment of present invention, the open loop operation time of speed ring and the speed during acquisition electric motor starting
Given value of current amplitude during degree ring open loop operation, including：The first predetermined current vector is given to control the rotor of the motor quiet
Only in first position；The motor stationary rotor behind the first position, give the second predetermined current vector so that institute
The rotor for stating motor is rotated from the first position to the second place, and is finally still in the second place；Record the electricity
The rotor of machine since the first position to rotate the second place when given value of current value, to obtain the given value of current
Amplitude；The rotor for recording the motor is rotated to the second place from the first position and is finally still in the second
The time put, to obtain the open loop operation time of the speed ring.
According to one embodiment of present invention, the corresponding electrical angle in the first position is 180 °, the second place pair
The electrical angle answered is 0 °.
According to one embodiment of present invention, it is described that the speed ring is obtained according to the open loop operation time of the speed ring
Speed preset value during open loop operation, including：Obtain the rotor-position limit value during open loop operation of the speed ring；According to described
Speed preset value described in the open loop operation Time Calculation of rotor-position limit value and the speed ring.
According to one embodiment of present invention, the speed preset value is calculated by below equation：
Wherein, ω * are the speed preset value, and k is coefficient, and 0 ＜ k ＜ 1, T are the speed open loop operation time,
It is the rotor-position limit value.
According to one embodiment of present invention, the rotor-position limit value is pi/2.
To achieve the above object, the starter of a kind of blower motor that another aspect of the present invention embodiment is proposed, including：
First acquisition module, electricity during for the open loop operation time for obtaining speed ring during electric motor starting and the speed ring open loop operation
The given amplitude of stream；Second acquisition module, for obtaining the speed ring open loop fortune according to the open loop operation time of the speed ring
Speed preset value during row；Control module, in the electric motor starting, the motor being calculated according to the speed preset value
Rotor-position, and speed ring opened loop control is carried out to the motor according to the given value of current amplitude and the rotor-position,
Until when the opened loop control time reaches the open loop operation time, controlling the motor to carry out speed ring operation with closed ring.
The starter of blower motor according to embodiments of the present invention, electric motor starting speed per hour is obtained by the first acquisition module
Given value of current amplitude when open loop operation time and the speed ring open loop operation of ring is spent, the second acquisition module is opened according to speed ring
Speed preset value during inscription of loop time acquisition speed ring open loop operation, control module in electric motor starting, according to speed preset
Value calculates the rotor-position of motor, and carries out speed ring opened loop control to motor according to given value of current amplitude and rotor-position, directly
When reaching the open loop operation time to the opened loop control time, controlled motor carries out speed ring operation with closed ring.So as in position sensorless
Under conditions of device, the quick startup of motor, and start-up course noiselessness are realized, it is applied widely to machine saliency no requirement (NR).
According to one embodiment of present invention, first acquisition module includes：Given module, presets for giving first
Current phasor to control the stationary rotor of the motor in first position, and the motor stationary rotor at described first
Postpone, give the second predetermined current vector so that the rotor of the motor is rotated from the first position to the second place, and most
The second place is still in eventually；Logging modle, for recording the rotor of the motor from the first position to described second
Given value of current value when position starts to rotate, to obtain the given value of current amplitude, and records the rotor of the motor from described
First position rotates to the second place and is finally still in the time of the second place, to obtain opening for the speed ring
The inscription of loop time.
According to one embodiment of present invention, the corresponding electrical angle in the first position is 180 °, the second place pair
The electrical angle answered is 0 °.
According to one embodiment of present invention, second acquisition module is obtained according to the open loop operation time of the speed ring
During speed preset value when taking the speed ring open loop operation, wherein, second acquisition module obtains opening for the speed ring
Rotor-position limit value during inscription of loop, and according to the rotor-position limit value and the open loop operation Time Calculation institute of the speed ring
State speed preset value.
According to one embodiment of present invention, second acquisition module calculates the speed preset by below equation
Value：
Wherein, ω * are the speed preset value, and k is coefficient, and 0 ＜ k ＜ 1, T are the speed open loop operation time,
It is the rotor-position limit value.
According to one embodiment of present invention, the rotor-position limit value is pi/2.
Additionally, embodiments of the invention also proposed a kind of blower motor, the startup dress that it includes above-mentioned blower motor
Put.
The blower motor of the embodiment of the present invention, by the starter of above-mentioned blower motor, can be in position sensorless
Under conditions of device, the quick startup of motor, and start-up course noiselessness are realized, it is applied widely to machine saliency no requirement (NR).
Brief description of the drawings
Fig. 1 is the flow chart of the startup method of blower motor according to embodiments of the present invention；
Fig. 2 is the rotor rotation schematic diagram with loaded blower motor according to an embodiment of the invention；
Fig. 3 be given value of current value during the Speed open-loop control of blower motor according to an embodiment of the invention and
Speed preset value；
Fig. 4 is the vector control system figure of blower motor according to an embodiment of the invention；
Fig. 5 is the block diagram of the starter of blower motor according to embodiments of the present invention；
Fig. 6 is the block diagram of the starter of blower motor according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
The startup method of the blower motor of proposition according to embodiments of the present invention, blower motor described with reference to the accompanying drawings
Starter and the blower motor with the device.
Fig. 1 is the flow chart of the startup method of blower motor according to embodiments of the present invention.As shown in figure 1, the blower fan is electric
The startup method of machine may include following steps：
S1, the open loop operation time of speed ring and the given value of current width during speed ring open loop operation when obtaining electric motor starting
Value.
According to one embodiment of present invention, the open loop operation time of speed ring and speed ring open loop when obtaining electric motor starting
Given value of current amplitude during operation, including：Given first predetermined current vector is with the stationary rotor of controlled motor in first position；
Motor stationary rotor behind first position, give the second predetermined current vector so that the rotor of motor is from first position to the
Two positions rotate, and are finally still in the second place；Record the rotor of motor since first position to rotate the second place when
Given value of current value, to obtain given value of current amplitude；The rotor for recording motor is rotated and final from first position to the second place
The time of the second place is still in, to obtain the open loop operation time of speed ring.
Preferably, the corresponding electrical angle in first position can be 180 °, and the corresponding electrical angle of the second place can be 0 °.
Specifically, the open loop operation time of speed ring during electric motor starting can be obtained beforehand through the mode of experiment test
Given value of current amplitude during with speed ring open loop operation.
Fig. 2 is the rotor rotation schematic diagram with loaded blower motor according to an embodiment of the invention.Wherein,
It is rotor flux linkage vector,It is current phasor, δ is the angle between rotor flux and the negative semiaxis of α axles, and γ is rotor because inertia revolves
Turn more than target location and speed angle when being zero and between the negative semiaxis of α axles.
In test, first by giving current phasorBorn with by the rotor pre-determined bit of the loaded motor of band to α axles
The neighbouring position of semiaxis, i.e. electrical angle are at 180 ° of positions of ± δ (δ is the smaller the better).Then, after rotor is static, from
Zero starts gradually to increase current phasorAmplitude so that the rotor of motor starts to rotate, and be finally still in α axles, i.e. electric angle
Spend at the position for 0 °.
Wherein, during the rotor of motor is rotated, the rotor of motor is first rotated along the direction of arrow 1, when arrival mesh
During cursor position α axles, due to effect of inertia, rotor be may proceed to be rotated along the direction of arrow 2, and semiaxis and folder are born with α axles until reaching
Angle is the position of γ, and now the speed of rotor is zero, discounting for the influence of the factors such as frictional force and windage, γ=δ, but
γ ＞ δ in actual conditions.When rotor reach γ positions after, rotor starts along the directional steering target location α axles of arrow 3, when turn
When son reaches target location α axles, the record time (can be tested by oscillograph and obtained) now, the open loop as speed ring is transported
Row time T (usually millisecond rank), meanwhile, the current phasor when rotor for recording motor starts to rotate, as speed ring
Given value of current amplitude during open loop operation.So as to obtain open loop operation time and the speed ring of speed ring by positioning twice
Given value of current amplitude during open loop operation.
In addition, given value of current amplitude during for the open loop operation time T and speed ring open loop operation that ensure speed ring
Accuracy, can take multiple measurements, to eliminate interference effect.
Speed preset value when S2, open loop operation time acquisition speed ring open loop operation according to speed ring.
According to one embodiment of present invention, during open loop operation time acquisition speed ring open loop operation according to speed ring
Speed preset value, including：Rotor-position limit value during the open loop operation of acquisition speed ring；According to rotor-position limit value and speed ring
Open loop operation Time Calculation speed preset value.
According to one embodiment of present invention, can be by following formula (1) calculating speed set-point：
Wherein, ω * are speed preset value, and k is coefficient, and 0 ＜ k ＜ 1, T are the speed open loop operation time,It is rotor position
Put limit value.Preferably, rotor-position limit value can be pi/2.
Specifically, can normally start to ensure motor, it is (real when the rotor of T moment motors reaches target location α axles
Border reaches target location α axle for the rotor second of motor), it is necessary to current phasor rotation angle commands are no more than rotor-position
Limit value(such as pi/2), i.e. rotor-position are no more than rotor-position limit valueTo ensure that torque now is enough to turning motor
Son is dragged, so doing following constraint to rotor-position：
Wherein, θ*It is rotor-position, ω*It is speed preset value, α*It is angular acceleration set-point.
Then it is integrated computing to above-mentioned formula (2) to obtain following formula (3)：
Then acquisition angular acceleration set-point α can be calculated according to above-mentioned formula (3)*With speed preset value ω*：
That is, being limited to obtain speed preset during motor open-loop start-up by the rotor-position to motor
Value, it is ensured that motor can normally start.
S3, in electric motor starting, calculates the rotor-position of motor according to speed preset value, and according to given value of current amplitude and
Rotor-position carries out speed ring opened loop control to motor, until when the opened loop control time reaches the open loop operation time, controlled motor
Carry out speed ring operation with closed ring.
Specifically, as shown in figure 4, in electric motor starting, velocity location observer cannot accurately estimating speed and position, i.e.,
Speed ring cannot carry out closed-loop control, therefore by two software switch controls at 1 position, to carry out speed open loop, electric current
The control of closed loop.Now, the set-point of electric current loop is as shown in figure 3, simultaneously, speed preset value ω*Pressed by speed command generator
Exported according to the mode shown in Fig. 3, position command maker is to speed preset value ω*It is integrated to obtain the rotor position of motor
Put, then calculated using the rotor-position to obtain the control signal of motor, closed with carrying out speed open loop, electric current to motor
Ring is controlled.
When the time of speed open loop open loop operation time T is reached, rotor-position now and speed are recorded, and will now
Rotor-position and speed as closed-loop control medium velocity position detection device initial value, while the control of two software switch is existed
At 2 position, to carry out speed closed loop, closed-loop current control.
In sum, the startup method of blower motor according to embodiments of the present invention, speed when obtaining electric motor starting first
Given value of current amplitude when the open loop operation time of ring and speed ring open loop operation, and obtained according to the open loop operation time of speed ring
Take speed preset value during speed ring open loop operation.In electric motor starting, the rotor-position of motor is calculated according to speed preset value,
And speed ring opened loop control is carried out to motor according to given value of current amplitude and rotor-position, until the opened loop control time reaches open loop
During run time, controlled motor carries out speed ring operation with closed ring.So as under conditions of position-sensor-free, realize the fast of motor
Speed starts, and start-up course noiselessness, applied widely to machine saliency no requirement (NR).
Fig. 5 is the block diagram of the starter of blower motor according to embodiments of the present invention.As shown in figure 5, the wind
The starter of electromechanical machine includes：First acquisition module 10, the second acquisition module 20 and control module 30.
Wherein, the open loop operation time of speed ring and speed ring open loop when the first acquisition module 10 is used to obtain electric motor starting
Given value of current amplitude during operation.Second acquisition module 20 is used for the open loop operation time acquisition speed ring open loop according to speed ring
Speed preset value during operation.Control module 30 is used to be calculated according to speed preset value in electric motor starting the rotor position of motor
Put, and speed ring opened loop control is carried out to motor according to given value of current amplitude and rotor-position, until the opened loop control time reaches
During the open loop operation time, controlled motor carries out speed ring operation with closed ring.
According to one embodiment of present invention, as shown in fig. 6, the first acquisition module 10 includes：Given module 11 and record
Module 12.Wherein, giving module 11 is used to give the first predetermined current vector with the stationary rotor of controlled motor in first position,
And motor stationary rotor behind first position, give the second predetermined current vector so that motor rotor from first position to
The second place is rotated, and is finally still in the second place.Logging modle 12 is used to recording the rotor of motor from first position to the
Given value of current value when two positions start to rotate, to obtain given value of current amplitude, and record the rotor of motor from first position to
The second place is rotated and is finally still in the time of the second place, to obtain the open loop operation time of speed ring.
Preferably, the corresponding electrical angle in first position is 180 °, and the corresponding electrical angle of the second place is 0 °.
Specifically, the open loop operation time of speed ring during electric motor starting can be obtained beforehand through the mode of experiment test
Given value of current amplitude during with speed ring open loop operation.
Fig. 2 is the rotor rotation schematic diagram with loaded blower motor.Wherein,It is rotor flux linkage vector,It is electricity
Flow vector, δ is the angle between rotor flux and the negative semiaxis of α axles, and γ is rotor because inertial rotation exceedes target location and speed
Angle when being zero and between the negative semiaxis of α axles.
In test, module 11 is given first by giving current phasorMake a reservation for by the rotor of the loaded motor of band
It is at 180 ° of positions of ± δ (δ is the smaller the better) that position bears the neighbouring position of semiaxis, i.e. electrical angle to α axles.Then, in rotor
After static, given module 11 is started from scratch and gradually increases current phasorAmplitude so that the rotor of motor starts to rotate, and most
It is still in eventually at the position that α axles, i.e. electrical angle are 0 °.
Wherein, during the rotor of motor is rotated, the rotor of motor is first rotated along the direction of arrow 1, when arrival mesh
During cursor position α axles, due to effect of inertia, rotor be may proceed to be rotated along the direction of arrow 2, and semiaxis and folder are born with α axles until reaching
Angle is the position of γ, and now the speed of rotor is zero, discounting for the influence of the factors such as frictional force and windage, γ=δ, but
γ ＞ δ in actual conditions.When rotor reach γ positions after, rotor starts along the directional steering target location α axles of arrow 3, when turn
When son reaches target location α axles, logging modle 12 records the time (can be tested by oscillograph and obtained) now, as speed
The open loop operation time T (usually millisecond rank) of ring, meanwhile, the current phasor when rotor for recording motor starts to rotate, with
Given value of current amplitude during as speed ring open loop operationDuring so as to the open loop operation that speed ring is obtained by positioning twice
Between and given value of current amplitude during speed ring open loop operation.
In addition, given value of current amplitude during for the open loop operation time T and speed ring open loop operation that ensure speed ring
Accuracy, can take multiple measurements, to eliminate interference effect.
According to one embodiment of present invention, open loop operation time acquisition speed of second acquisition module 20 according to speed ring
During speed preset value during ring open loop operation, wherein, the rotor position during open loop operation of the acquisition speed ring of the second acquisition module 20
Limit value is put, and according to rotor-position limit value and the open loop operation Time Calculation speed preset value of speed ring.Preferably, rotor-position
Limit value is pi/2.
According to one embodiment of present invention, the second acquisition module 20 can be by above-mentioned formula (1) calculating speed set-point.
Specifically, can normally start to ensure motor, it is (real when the rotor of T moment motors reaches target location α axles
Border reaches target location α axle for the rotor second of motor), it is necessary to current phasor rotation angle commands are no more than rotor-position
Limit value(such as pi/2), i.e. rotor-position are no more than rotor-position limit valueTo ensure that torque now is enough to turning motor
Son is dragged, so entering row constraint to rotor-position according to above-mentioned formula (2).Then above-mentioned formula (2) is integrated computing with
Above-mentioned formula (3) is obtained, acquisition angular acceleration set-point α can be calculated finally according to above-mentioned formula (3)*With speed preset value ω*。
That is, being limited to obtain speed preset during motor open-loop start-up by the rotor-position to motor
Value, it is ensured that motor can normally start.
As shown in figure 4, in electric motor starting, velocity location observer cannot accurately estimating speed and position, i.e. speed ring
Closed-loop control cannot be carried out, therefore by two software switch controls at 1 position, to carry out speed open loop, current closed-loop
Control.Now, the set-point of electric current loop is as shown in figure 3, simultaneously, speed preset value ω*By the speed command in control module 30
Maker 31 is exported according to the mode shown in Fig. 3, and the position command maker 32 in control module 30 is to speed preset value ω*Enter
Row is integrated to obtain the rotor-position of motor, is then calculated using the rotor-position to obtain the control signal of motor, with
Speed open loop, closed-loop current control are carried out to motor.
When the time of speed open loop open loop operation time T is reached, control module 30 records rotor-position and speed now
Degree, and using rotor-position now and speed as closed-loop control medium velocity position detection device initial value, while soft by two
Part switch is controlled at 2 position, to carry out speed closed loop, closed-loop current control.
The starter of blower motor according to embodiments of the present invention, electric motor starting speed per hour is obtained by the first acquisition module
Given value of current amplitude when open loop operation time and the speed ring open loop operation of ring is spent, the second acquisition module is opened according to speed ring
Speed preset value during inscription of loop time acquisition speed ring open loop operation, control module in electric motor starting, according to speed preset
Value calculates the rotor-position of motor, and carries out speed ring opened loop control to motor according to given value of current amplitude and rotor-position, directly
When reaching the open loop operation time to the opened loop control time, controlled motor carries out speed ring operation with closed ring.So as in position sensorless
Under conditions of device, the quick startup of motor, and start-up course noiselessness are realized, it is applied widely to machine saliency no requirement (NR).
Additionally, embodiments of the invention also proposed a kind of blower motor, the startup dress that it includes above-mentioned blower motor
Put.
The blower motor of the embodiment of the present invention, by the starter of above-mentioned blower motor, can be in position sensorless
Under conditions of device, the quick startup of motor, and start-up course noiselessness are realized, it is applied widely to machine saliency no requirement (NR).
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (13)
1. a kind of startup method of blower motor, it is characterised in that comprise the following steps：
The open loop operation time of speed ring and the given value of current amplitude during speed ring open loop operation when obtaining electric motor starting；
The open loop operation time according to the speed ring obtains the speed preset value during speed ring open loop operation；
In the electric motor starting, the rotor-position of the motor is calculated according to the speed preset value, and according to the electric current
Given amplitude and the rotor-position carry out speed ring opened loop control to the motor, until the opened loop control time reaches described opening
During the inscription of loop time, the motor is controlled to carry out speed ring operation with closed ring.
2. the startup method of blower motor as claimed in claim 1, it is characterised in that speed ring during the acquisition electric motor starting
The open loop operation time and the given value of current amplitude during speed ring open loop operation, including：
The first predetermined current vector is given to control the stationary rotor of the motor in first position；
The motor stationary rotor behind the first position, give the second predetermined current vector so that the motor turn
Son is rotated from the first position to the second place, and is finally still in the second place；
Record the rotor of the motor since the first position to rotate the second place when given value of current value, to obtain
Obtain the given value of current amplitude；
The rotor for recording the motor is rotated to the second place from the first position and is finally still in the second
The time put, to obtain the open loop operation time of the speed ring.
3. the startup method of blower motor as claimed in claim 2, it is characterised in that the corresponding electrical angle in the first position
It it is 180 °, the corresponding electrical angle of the second place is 0 °.
4. the startup method of blower motor as claimed in claim 1, it is characterised in that the open loop according to the speed ring
Run time obtains the speed preset value during speed ring open loop operation, including：
Obtain the rotor-position limit value during open loop operation of the speed ring；
Speed preset value described in open loop operation Time Calculation according to the rotor-position limit value and the speed ring.
5. the startup method of blower motor as claimed in claim 4, it is characterised in that the speed is calculated by below equation
Set-point：
Wherein, ω * are the speed preset value, and k is coefficient, and 0 ＜ k ＜ 1, T are the speed open loop operation time,For institute
State rotor-position limit value.
6. the startup method of blower motor as claimed in claim 4, it is characterised in that the rotor-position limit value is pi/2.
7. a kind of starter of blower motor, it is characterised in that including：
First acquisition module, during for the open loop operation time for obtaining speed ring during electric motor starting and the speed ring open loop operation
Given value of current amplitude；
Second acquisition module, for obtaining the speed during speed ring open loop operation according to the open loop operation time of the speed ring
Degree set-point；
Control module, in the electric motor starting, calculating the rotor-position of the motor according to the speed preset value, and
Speed ring opened loop control is carried out to the motor according to the given value of current amplitude and the rotor-position, until during opened loop control
Between when reaching the open loop operation time, control the motor to carry out speed ring operation with closed ring.
8. the starter of blower motor as claimed in claim 7, it is characterised in that first acquisition module includes：
Given module, for giving the first predetermined current vector to control the stationary rotor of the motor in first position, and
The stationary rotor of the motor gives the second predetermined current vector so that the rotor of the motor is from institute behind the first position
State first position to be rotated to the second place, and be finally still in the second place；
Logging modle, for record the rotor of the motor since the first position to rotate the second place when electricity
Stream set-point, to obtain the given value of current amplitude, and records the rotor of the motor from the first position to described second
Position rotates and is finally still in the time of the second place, to obtain the open loop operation time of the speed ring.
9. the starter of blower motor as claimed in claim 8, it is characterised in that the corresponding electrical angle in the first position
It it is 180 °, the corresponding electrical angle of the second place is 0 °.
10. the starter of blower motor as claimed in claim 7, it is characterised in that second acquisition module is according to institute
State speed ring the open loop operation time obtain the speed ring open loop operation when speed preset value when, wherein,
Second acquisition module obtains the rotor-position limit value during open loop operation of the speed ring, and according to rotor position
Put speed preset value described in the open loop operation Time Calculation of limit value and the speed ring.
The starter of 11. blower motors as claimed in claim 10, it is characterised in that second acquisition module by with
Lower formula calculates the speed preset value：
Wherein, ω * are the speed preset value, and k is coefficient, and 0 ＜ k ＜ 1, T are the speed open loop operation time,For institute
State rotor-position limit value.
The starter of 12. blower motors as claimed in claim 10, it is characterised in that the rotor-position limit value is pi/2.
A kind of 13. blower motors, it is characterised in that the startup including the blower motor as any one of claim 7-12
Device.
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