CN106065522B - The motor driver of washing machine - Google Patents
The motor driver of washing machine Download PDFInfo
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- CN106065522B CN106065522B CN201610229038.5A CN201610229038A CN106065522B CN 106065522 B CN106065522 B CN 106065522B CN 201610229038 A CN201610229038 A CN 201610229038A CN 106065522 B CN106065522 B CN 106065522B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
The motor driver of washing machine, has：Rectification circuit is connected to via reactor in AC power；Short-circuit unit makes short circuit between the input terminal of the rectification circuit；Inverter circuit is connected to the outlet side of rectification circuit, direct current power is converted into AC power, and drive the motor at least generating the rotary driving force for carrying out dehydrating operation；And fault control unit changes number short-circuit between making between the zero crossing timing of the voltage waveform of AC power input terminal by short-circuit unit according to the variation of control parameter when carrying out dehydrating operation.When repeatedly carrying out short circuit within the half period of AC power, before reaching the current peak in the half period, the electric current decrement that fault control unit executes the time point for making to proceed by second of later short action is less than the 30% of the current peak and is less than 40% control of current peak with the electric current incrementss of short action, to make the peak value increase when the curent change caused by short circuit occurs every time.
Description
Technical field
Embodiments of the present invention are related to the electricity of the washing machine to having reactor between AC power and rectification circuit
The device that machine is driven.
Background technology
Such as in Japanese Unexamined Patent Publication 2010-273505 bulletins, linked reactor, life between AC power and inverter
At DC power supply rectification circuit and make short-circuit unit between the AC input terminal of the rectification circuit, in AC supply voltage
Half period in, make repeatedly short circuit between AC input terminal, and make current direction reactor, to DC power supply busbar voltage
Carry out boosting rectifier control.
However, in the boosting rectifier control of above-mentioned document, increase when making short-circuit number in order to obtain higher boost effect
When, then the variation of source current value can become larger when each progress short circuit, higher harmonic current can be caused to increase.In addition, it is also proposed that
The following technical solution, i.e., proceed by short circuit, and adjust short circuit duration width from the zero cross point of AC supply voltage, from
And boost effect is adjusted, but it is possible to which the electromagnetic energy being accumulated in short circuit duration in reactor is limited.Except this it
Outside, when short circuit duration is elongated, the deformation of source current waveform can still become larger, and can lead to the increase of higher harmonic current.
Invention content
Therefore, the present invention provides a kind of motor driver of washing machine, can get higher boost effect, and can
Inhibit the increase of higher harmonic current.
According to the motor driver of the washing machine of embodiment, have：Rectification circuit is connected to friendship via reactor
On galvanic electricity source；Short-circuit unit makes short circuit between the input terminal of the rectification circuit；Inverter circuit is connected to the rectification circuit
Outlet side, direct current power is converted into AC power, and drive the rotary driving force at least generated for carrying out dehydrating operation
Motor；And fault control unit, the variation of control parameter when according to the progress dehydrating operation change by described short
Road unit makes short-circuit number between the input terminal between the zero crossing timing of the voltage waveform of the AC power.
When repeatedly carrying out the short circuit in the half period in the AC power, reaching the electric current in the half period
Before peak value, the electric current that the fault control unit executes the time point for making to proceed by second of later short action is reduced
30% of amount less than the current peak and 40% of the electric current incrementss with the short action less than the current peak
Control, to make the peak value increase when the curent change caused by short circuit occurs every time.
Description of the drawings
Fig. 1 is related to first embodiment, is the driving control system for diagrammatically showing each motor in washing dryer
Figure.
Fig. 2 is the longitudinal cross-sectional side view for the structure for showing drum-type washing drying machine.
Fig. 3 is the flow chart for the action for diagrammatically showing dehydrating operation.
Fig. 4 is the flow chart for the beginning/end determination processing for showing boosting rectifier control.
Fig. 5 is the flow chart for the start to process for showing boosting rectifier control.
Fig. 6 is the flow chart for showing second of later short action processing.
Fig. 7 is the figure of an example for showing actual supply voltage, current waveform.
Fig. 8 be show carry out patent document 1 boosting rectifier control when supply voltage, current waveform an example figure.
Fig. 9 is the figure for showing to measure the boosting rectifier control of present embodiment an example of the result of higher harmonic current value.
Figure 10 is the figure of an example for the result that higher harmonic current value is measured to the boosting rectifier control of patent document 1.
Figure 11 is supply voltage, the electric current when output gap of pulse being set to longer relative to situation shown in Fig. 9
The figure of an example of waveform.
Figure 12 is the figure of an example for the result for showing to be measured higher harmonic current value.
Figure 13 is related to second embodiment, is the short circuit for showing to make to export for the first time according to the AC current values in step S13
The delay time of pulse and based on each pulse short circuit duration variation numerical example figure.
Figure 14 is related to third embodiment, is the functional block diagram for the structure for showing control system.
Specific implementation mode
(first embodiment)
In the following, referring to figs. 1 to Figure 12, first embodiment is illustrated.Fig. 2 shows drum-type washing drying machine
The longitudinal cross-sectional side view of structure.Outer container 1 has foreboard, back plate, left plate, right plate, bottom plate and top plate, and is in hollow form,
It is formed on the foreboard of outer container 1 and penetrates through poroid entrance 2.Door 3 is installed on the foreboard of the outer container 1.User can be from
Front operates the door 3 between closed state and open state, and entrance 2 is closed in the state that door 3 is closed, and is opened in door 3
Entrance 2 is opened in the state of putting.It is fixed with sink 4 in the inside of outer container 1.The sink 4 in closed cylindrical shape below, and
Axial line CL is configured to the heeling condition declined from front to back.The sink 4 is the structure of front openings, in the shape that door 3 is closed
Under state, door 3 with airtight conditions sealing flume 4 before.
In the back plate of sink 4, Rolling motor 5 is fixed in the position outside sink 4.The Rolling motor 5 is by speed
It spends controllable DC brushless motor to constitute, the rotary shaft 6 of Rolling motor 5 is protruded towards the inside of sink 4.The rotary shaft 6 is configured
It is overlapped at the axial line CL with sink 4, in rotary shaft 6, roller 7 is fixed in the position inside sink 4.The roller 7
In closed cylindrical shape below, in the state that Rolling motor 5 is run, which integrally rotates with rotary shaft 6.The roller 7
Before before sink 4 from rear against entrance 2, in the state that door 3 opens, washings passes through discrepancy from front
Mouthfuls 2, before sink 4 and before roller 7 in and out of the inside of roller 7.
Multiple through holes 8 are formed on roller 7, the inner space of roller 7 passes through multiple through holes 8 and sink 4 respectively
Inner space connection.It is fixed with multiple baffles 9 on the roller 7.With the rotation of roller 7, these multiple baffles 9 respectively with
It is along the circumferential direction moved centered on axial line CL, the washings in roller 7 is hung on multiple baffles 9, and in circumferentially side
It falls because of the effect of gravity after to movement, is thus stirred.
It is fixed with feed water valve 10 in the inside of outer container 1.The feed water valve 10 has entrance and outlet, the entrance of feed water valve 10
It is connected on the tap of water supply pipe.The feed water valve 10 with feed water valve motor 11 (with reference to Fig. 2) for driving source, and according to confession
The rotation amount of water valve motor 11 switches the outlet of feed water valve 10 between open state and closed state.The feed water valve 10 goes out
Mouth is connected on water injection box 12, and in the state that feed water valve 10 opens, tap water is injected by feed water valve 10 in water injection box 12,
And in the state that feed water valve 10 is closed, tap water will not be injected into water injection box 12.In the inside of outer container 1, the water injection box 12
It is fixed on than at 4 higher position of sink, and the water injection box 12 has the water filling port 13 of tubular.The water filling port 13 is inserted into
The inside of sink 4 is injected into the tap water in water injection box 12 from the inside of the injection screw clamp 4 of water filling port 13 from feed water valve 10.
On sink 4, in the upper end for being connected with drainpipe 14 positioned at the position of lowest part, it is provided on drainpipe 14
Drain valve 15.The drain valve 15 with drain valve motor 16 (with reference to Fig. 2) for driving source, and according to the rotation of drain valve motor 16
Amount, switches the drain valve 15 between open state and closed state.In the state that the drain valve 15 is closed, from water filling port 13
The tap water accumulation in screw clamp 4 is injected in sink 4, and in the state that drain valve 15 opens, and the tap water in sink 4 is logical
Cross the outside that drainpipe 14 is discharged to sink 4.
On the bottom plate of outer container 1, main air duct 17 is fixed in the position below sink 4.The main air duct 17 is in direction
Tubular in the front-back direction is connected with the lower end of primary air separating duct 18 in the front end of main air duct 17.The primary air separating duct 18 is in be directed toward up and down
The upper end of the tubular in direction, primary air separating duct 18 is connect by the front end of sink 4 with the inner space of sink 4.In main air duct 17
Rear end be fixed with Blower Housing 19.The Blower Housing 19 has the exhaust outlet for penetrating through poroid air entry 20 and tubular
21, the inner space of Blower Housing 19 is connect via air entry 20 with the inner space of main air duct 17.
On Blower Housing 19, blower motor 22 is fixed in the position outside Blower Housing 19.The blower motor
22 have the inside rotary shaft 23 outstanding towards Blower Housing 19, in rotary shaft 23, in the position inside Blower Housing 19
It sets and is fixed with wind turbine 24.The wind turbine 24 is the centrifugal fan for sucking air from axis direction and air being radially discharged, Fan casing
For the air entry 20 of body 19 from the axis direction of wind turbine 24 against wind turbine 24, the radial direction of exhaust outlet 21 from the wind turbine 24 of Blower Housing 19 is right
Wind turbine 24.
The lower end in air duct 25 after being connected on the exhaust outlet 21 of Blower Housing 19.The rear air duct 25 is in direction upper and lower
To tubular, the upper end in rear air duct 25 is connect by the rear end of sink 4 with the inner space of sink 4.These rear air ducts 25,
Blower Housing 19, main air duct 17, primary air separating duct 18 and sink 4 are constituted respectively using the inner space of sink 4 as starting point and terminal
Cricoid circulation air path 26, under 3 closed state of door blower motor 22 run when, wind turbine 24 towards fixed-direction rotate, by
Air in this sink 4 out of primary air separating duct 18 by being attracted in Blower Housing 19 in main air duct 17, and from Blower Housing 19
It is interior to be returned in sink 4 by the way that rear air duct 25 is interior.
It is fixed with compressor reducer (compressor) 27 in the inside of outer container 1.The compressor reducer 27 is configured in the outer of circulation air path 26
Portion, and the outlet with discharging refrigerant and the suction inlet for sucking refrigerant.The compressor reducer 27 is with (the ginseng of compressor reducer motor 28
According to Fig. 2) it is driving source, compressor reducer motor 28 is made of the controllable DC brushless motor of speed.
It is fixed with freezing machine (condenser) 29 in the inside of main air duct 17.The freezing machine 29 is used to heat air,
By plate-like multiple heating fins 31 are fixed on contact condition respectively serpentine bend a refrigerant pipe 30 it is outer
Circumferential surface and constitute.The refrigerant pipe 30 of the freezing machine 29 is connected on the outlet of compressor reducer 27, is run in compressor reducer motor 28
In the state of, out of, the refrigerant of the outlet of compressor reducer 27 discharge enters freezing machine 29 refrigerant pipe 30.
Fig. 1 diagrammatically shows the driving control system of Rolling motor 5, blower motor 22 and compressor reducer motor 28.
Inverter circuit 34 is made up of six IGBT (switch element) 35a~35f of three phase bridge, in the collection of each IGBT35a~35f
Fly-wheel diode 36a~36f is connected between electrode and emitter.Each phase output terminals of inverter circuit 34 are connected to roller
On each phase winding of motor 5.
The emitter of IGBT35d, 35e, 35f of lower bridge arm side are grounded via shunt resistance 37u, 37v, 37w.In addition,
The emitter of IGBT35d, 35e, 35f are connected to control circuit (miniature place with the common connecting point of shunt resistance 37u, 37v, 37w
Manage device, microcomputer) 42A input terminal on.
In the inside of control circuit 42A, although not shown, but by being configured to the level conversion containing operational amplifier etc.
(level shift) circuit, so as to the terminal voltage amplification of shunt resistance 37u~37w and make the output area of its increment signal
The mode for being maintained at positive side assigns (such as 0~+3.3V) bias.In addition, control circuit 42A has following function, i.e., in order to anti-
Only circuit is damaged in the upper and lower bridge arm short circuit of inverter circuit 34 and carry out overload current detection.
Moreover, for blower motor 22, configured with equally constitute inverter circuit 38 and shunt resistance 39 (u, v,
W), for compressor reducer motor 28, inverter circuit 40 and shunt resistance 41 (u, v, w) are configured with.Pass through another control electricity
Road 42B (microprocessor, microcomputer, fault control unit) controls inverter circuit 38 and inverter circuit 40
System, control circuit 42A, 42B can carry out the two-way communication based on serial communication.
It is connected to driving power circuit 43 in the input side of inverter circuit 34,38,40.Driving power circuit 43
One end is connect via reactor (inductive reactance) 44 with the AC power of 100V, which has by two poles
Pipe bridge constitute full-wave rectifying circuit 45 and be connected in series in full-wave rectifying circuit 45 outlet side two capacitor 46a,
46b.The common connecting point of capacitor 46a, 46b are connected to the side of the input terminal of full-wave rectifying circuit 45.Make not executing
In the case of the boost action carried out with aftermentioned reactor 44, driving power circuit 43 carries out times the AC power of 100V
Full-wave rectification is pressed, and the DC voltage of about 280V is supplied to inverter circuit 34 etc..
Another all-wave being equally made of diode bridge is connected in parallel on the input terminal of full-wave rectifying circuit 45
Rectification circuit 47 (short-circuit unit) is connected to IGBT48 (short-circuit unit) between the leading-out terminal of full-wave rectifying circuit 47.By controlling
Circuit 42B processed carries out the conducting shutdown control of IGBT48.
Series circuit, the electricity of resistance 49a and resistance 49b are connected separately between the input terminal of inverter circuit 34,38
The series circuit of 50a and resistance 50b is hindered, respective common connecting point is connected on the input terminal of control circuit 42A, 42B.Control
Circuit 42A, 42B processed detect the driving power for being input to inverter 34,38 by referring to the voltage of above-mentioned each common connecting point
Voltage.
In addition, for Rolling motor 5, it is configured with and is passed such as the position constituted by Hall IC to detect rotor-position
Sensor 51 (u, v, w), the sensor signal that position sensor 51 exports are given to control circuit 42A.In addition, in AC power
It is exported inserted with the current sensor 52 being for example made of current transformer (CT) etc., current sensor 52 between reactor 44
Sensor signal be given to control circuit 42B.
Control circuit 42A, 42B is detected the electric current of each phase winding of flow direction motor 5,22,28, and according to the electric current
The phase theta and angular velocity of rotation ω of the rotating excitation field of value presumption primary side, and rectangular coordinates transformation is carried out to three-phase current
And dq (direct-quadrature, straight-to hand over) coordinate transform, to obtain excitation current component Id, torque current component
Iq.Then, when assigning speed command from outside, control circuit 42A, 42B is according to the phase theta and angular velocity of rotation deduced
ω and current component Id, Iq generate current-order Idref, Iqref and are carried out if transforming it into voltage instruction Vd, Vq
Rectangular coordinates transformation and three-phase coordinate transform.Finally, drive signal is generated as pwm signal, and via inverter circuit
34,38, the 40 each phase winding for being output to motor 5,22,28.
In above structure, inverter circuit 34, control circuit 42A and control circuit 42B, driving power circuit
43, reactor 44, rectification circuit 47, IGBT48 constitute driving device 60.
Next, illustrating the effect of present embodiment with reference to Fig. 3 to Figure 12.Fig. 3 is diagrammatically to show dehydrating operation
The flow chart of stroke.First, accelerated in a manner of so that the rotating speed of roller 7 is gradually increasing (S1), when rotating speed reaches 1000rpm
When (judging result of S2 be "Yes"), the license (S3) of boosting rectifier control is set.Later, at the end of preset dewatering time
(judging result of S4 is "Yes"), removes the license (S5) of boosting rectifier control.Then, make brake action (S6), when the rotation of roller 7
When turning to stop (judging result of S7 is "Yes"), dehydrating operation terminates.
Fig. 4 is beginning/end determination processing of the interruption for showing to occur along with every 1 millisecond and the boosting rectifier control executed
Flow chart.In step S3 shown in Fig. 3, if the license (judging result of S11 is "Yes") provided with boosting rectifier control, sentences
Whether current state (status) of breaking is " in boosting rectifier control " (S12).In addition, if the license (S11 of boosting rectifier control is not arranged
Judging result be "No"), then remove the state (S16) " in boosting rectifier control ", and end interrupt is handled.
In step s 12, if current state is not " in boosting rectifier control " (judging result is "No"), when judging this
Between the AC power electric current put whether be more than or equal to it is preset for proceeding by boosting rectifier control value (boosting initial value,
Control parameter) (S13).The initial value that boosts is for example 6A or so when power consumption is 550W.Here, being opened if it is larger than or equal to boosting
The state (S14) " in boosting rectifier control " is then arranged in initial value (judging result is "Yes"), and end interrupt is handled；If it is less than liter
Initial value (judging result is "No") is pressed off, then direct end interrupt processing.
In addition, in step s 12, if current state is " in boosting rectifier control " (judging result is "Yes"), judging
Whether the AC power electric current at the time point is less than or equal to the preset value (boosting stop value) for stopping boosting rectifier control
(S15).If it is less than equal to boosting stop value (judging result is "Yes"), then step S16 is transferred to；If it exceeds boosting stops
Value (judging result is "No"), then end interrupt processing.
Fig. 5 is the boosting control for showing to execute along with the interruption of every 1 millisecond generation in the same manner as flow as shown in Figure 4
The flow chart of the start to process of system.If current state is " in boosting rectifier control " (judging result of S21 is "Yes"), it is arranged
At to be lighted from zero crossing for what 50Hz or 60Hz was set according to the AC power current value and supply frequency at the time point
Delay time (such as 1.5 milliseconds~2 milliseconds), and with the time (arteries and veins of the tripping action (conducting of IGBT48) initially carried out
Rush width, such as 0.6 millisecond) output short-circuit pulse (S22).On the other hand, if current state is not " in boosting rectifier control "
(judging result of S21 is "No") then removes the output of short circuit pulse, that is, without short action (S23), and in end
Disconnected processing.
Fig. 6 is the flow for showing second that the half period in each AC power executes later short action processing
Figure.If currently just in output short-circuit pulse (after just having exported short circuit pulse for the first time) (judging result of S31 be "Yes"),
Judge whether the rotating speed (control parameter) of roller 7 is more than or equal to 1600rpm (S32).(judge if rotating speed is not up to 1600rpm
As a result it is "No"), then the output number of short circuit pulse is set as one, that is, be set as only exporting short circuit pulse (S35) for the first time,
And end interrupt is handled.
In step s 32, if rotating speed is more than or equal to 1600rpm (judging result is "Yes"), judge the time point
Whether direct current power source voltage is more than or equal to 295V (an example of target voltage) (S33).If direct current power source voltage is more than or equal to
295V (judging result is "Yes"), which is then limit with " 6 ", makes short circuit pulse number increase by one (S34).In addition, multiple short exporting
When the pulse of road, the output gap of pulse is set as such as 0.2 millisecond.In addition, such as second and the width of the pulse of third time output
Degree is, for example, 0.15 millisecond, and the width of the pulse of the 4th time to the 6th time output is, for example, mode as 0.075 millisecond, stage
Property chopped pulse width.In addition, in step S33, if direct current power source voltage is less than 295V (judging result is "No"),
Short circuit pulse number is then set to reduce by one (S36) than the umber of pulse exported in the current exchange half period.
Fig. 7 shows an example of actual supply voltage, current waveform.Be commercial ac power source be specified 50Hz/100V,
The case where direct current power source voltage is 304V, short circuit pulse number is " 4 ".In this case, second of later short circuit is proceeded by
The reduced value of the electric current at the time point of action, relative to exchange the half period in current peak decrement and with it is described short
Road act associated electric current value added and its incrementss it is as follows.
| Short-circuit number | Reduced value (decrement) | Value added (incrementss) |
| 2nd time | 1.6A (10%) | 3.4A (21%) |
| 3rd time | 1.2A (7%) | 3.0A (19%) |
| The 4th | 1.2A (7%) | 2.2A (14%) |
As specified in technical solution 1, when repeatedly carrying out short circuit in the half period in AC power, reaching this
Before current peak in half period, the control of these boosting rectifier control conditions is at making to proceed by second of later short action
The decrement of electric current at time point be less than 30% of the current peak in the half period, and make the electricity with the short action
Flow incrementss are less than the current peak 40%.
On the other hand, Fig. 8 shows boosting rectifier control (the short-circuit arteries and veins that patent document 1 is carried out under identical Power Supplies Condition
It is " 2 " to rush number) the case where.Proceed by the electric current at the time point of second of later short action reduced value and decrement,
And with the short action associated electric current value added and incrementss it is as follows.
| Short-circuit number | Reduced value (decrement) | Value added (incrementss) |
| 2nd time | 7.2A (40%) | 15.2A (84%) |
It is found that in terms of flowing to the variation of current waveform of reactor 44, gentle in Fig. 7, the direct current after rectification
Variation in terms of the voltage of source and in Fig. 7 is less.
It is shown in Fig. 9 and Figure 10 and higher harmonic current is measured to the boosting rectifier control of present embodiment and patent document 1
An example of the result of value.The case where patent document 1 shown in Fig. 10, the 9th, 11,13 and 19 each higher hamonic wave are more than
Limits value (100% boundary, the IEC specifications about washing machine).In contrast, the case where present embodiment shown in Fig. 9, directly
All higher hamonic waves until the 40th time are respectively less than limits value.
In addition, the output gap of pulse is set as by the case where Figure 11 is shown relative to present embodiment shown in Fig. 9
Longer 0.5 millisecond the case where (short circuit pulse number is " 3 ").This be maintain above-mentioned present embodiment boosting rectifier control condition it is big
Cause critical condition.
| Short-circuit number | Reduced value (decrement) | Value added (incrementss) |
| 2nd time | 2.5A (17%) | 4.0A (27%) |
| 3rd time | 2.0A (13%) | 6.0A (40%) |
As a result, as shown in figure 12, only the 23rd higher harmonic current has been more than limits value.
As described above, according to the present embodiment, the change of control parameter when control circuit 42B is according to progress dehydrating operation
Change, change is made by IGBT48 between the zero crossing timing of the voltage waveform of AC power between the input terminal of rectification circuit 45
The number of short circuit.Moreover, when repeatedly carrying out the short action in the half period in AC power, reaching the half period
Before interior current peak, the electric current decrement for executing the time point for making to proceed by second of later short action is less than institute
It states the 30% of current peak and is less than 40% control of the current peak with the electric current incrementss of the short action,
To make the peak value increase when the curent change caused by short circuit occurs every time.By carrying out boosting control in this way
System can get higher boost effect, and can inhibit the increase of higher harmonic current.
In addition, control circuit 42B detects the DC voltage exported from rectification circuit 45, and so that the DC voltage maintains mesh
The mode of mark voltage changes short-circuit number, therefore, it is possible to make boosting rectifier control stabilize.Thereby, it is possible to avoid the occurrence of because temporary
Generate excessive high voltage and cause circuit component damage or because boost it is insufficient due to cause the rotating speed of roller 7 to decline etc. phenomenon.
Further, control circuit 42B detections carry out the rotating speed of the motor 5 of dehydrating operation, and are threshold value or more in the rotating speed
Region in change short-circuit number.Thereby, it is possible to obtain required high voltage in the high region of rotating speed, can efficiently perform
Boosting rectifier control.
(second embodiment)
Figure 13 is related to second embodiment, assigns identical reference numeral to part same as the first embodiment and saves
Slightly illustrate, different parts is illustrated below.In this second embodiment, in step S13 shown in Fig. 4, according to this
The AC current values at time point change the delay time of the short circuit pulse exported for the first time, and also change the short circuit based on each pulse
Time (pulse width).Since until maximum is more than 14.4A, and supply frequency is 6A as unit of current value is by 0.6A
In the case of 50Hz, delay time is made to change to 2.490 milliseconds since 2.152 milliseconds as unit of 0.024 millisecond.In addition,
So that the width of short circuit pulse is changed to 0.647 millisecond from 0.579 millisecond as unit of 0.0184 millisecond, (current value is more than or equal to
It is identical value when 10.2A).Moreover, by the pulse width that second to the 4th time exports be set to first time 1/3,1/4,
1/7, and the 5th later pulse width is set as and the 4th identical width.
As described above, according to second embodiment, control circuit 42B determines short circuit according to the current value of AC power electric current
Time, therefore, it is possible to optimize the reducing effect of higher hamonic wave according to current value.
(third embodiment)
Figure 14 shows third embodiment.In the first embodiment, it is controlled according to flow chart shown in Fig. 6
System, to make the output number of short circuit pulse be incremented by, successively decrease.In contrast, in the third embodiment, the half of each exchange
Period execute using control system shown in Figure 14 (by based on control circuit 42B software handle centered on carry out function module
Control system obtained from change) carry out processing.Target voltage is set as such as 295V by voltage control division 61.Voltage detecting
Portion 62 includes the A/D converter etc. inside resistive element 50a and resistive element 50b and control circuit 42B shown in Fig. 1, and
Actual DC voltage value is detected by them.Then, subtracter 63 calculates the difference between target voltage and virtual voltage,
And it is input to the portions voltage PI 64.
The portions voltage PI 64 carry out PI (Proportional-Integral to the differential voltage inputted：Proportional integration) control
Operation processed, the output short-circuit duration width as the operation result.For example, the proportional of PI gains is set as 0.05%/V,
Integral term is set as 10%/V seconds etc., and is arranged to make the 0~20% of the ranging from exchange half period of short circuit duration width.
Time width-umber of pulse converter section 65 exports short circuit pulse number corresponding with the short circuit duration width inputted.Short circuit pulse is defeated
Go out portion 66 and generate gate drive signal corresponding with the short circuit pulse number inputted, and is output to the grid of IGBT48.
As described above, according to third embodiment, control circuit 42B passes through to target voltage and actual DC power supply electricity
Difference between pressure carries out PI controls to determine short circuit pulse number.Thereby, it is possible to so that actual direct current power source voltage closer to seemingly
Boosting rectifier control is carried out in the mode of target voltage.
(other embodiment)
Can also integral traffic control circuit 42A, 42B, to be arranged to a control circuit.
The delay time that pulse width when carrying out short circuit by IGBT can also suitably be changed, lighted from zero crossing.
Thyristor is not limited in IGBT, can also use bipolar transistor or MOSFET.
Pair setting carried out with rotating speed and the relevant threshold value of voltage, electric current, power is only an example, as long as according to a other
Design suitably change.
The concrete numerical value of the output gap of the delay time of short circuit pulse and each pulse, pulse width etc. is also only for the first time
An example, as long as according to a other design be implemented after suitably changing.
It is readily applicable to the washing machine without functions/drying.
The several embodiments of the present invention are illustrated, but these embodiments are to propose as an example,
It is not intended to limit the protection domain of invention.These novel embodiments can be implemented with various other ways, without departing from
Various omissions, displacement, change can be carried out in the protection domain of invention objective.These embodiments and modifications thereof are included in invention
Protection domain and objective in, and in invention described in claim and its equivalent protection domain.
Claims (6)
1. a kind of motor driver of washing machine, which is characterized in that have：
Rectification circuit is connected to via reactor in AC power；
Short-circuit unit makes short circuit between the input terminal of the rectification circuit；
Inverter circuit is connected to the outlet side of the rectification circuit, direct current power is converted into AC power, and drive at least
Generate the motor of the rotary driving force for carrying out dehydrating operation；And
Fault control unit, the variation of control parameter when according to the progress dehydrating operation, change pass through the short-circuit unit
Make short-circuit number between the input terminal between the zero crossing timing of the voltage waveform of the AC power；
When repeatedly carrying out the short circuit in the half period in the AC power, reaching the current peak in the half period
Before, it is small to execute the electric current decrement at the time point for making to proceed by second of later short action for the fault control unit
30% and the electric current incrementss with the short action in the current peak are less than 40% control of the current peak
System, to make the peak value increase when the curent change caused by short circuit occurs every time.
2. the motor driver of washing machine according to claim 1, which is characterized in that
The fault control unit detects the DC voltage exported from the rectification circuit, and so that the DC voltage maintains mesh
The mode of mark voltage changes short-circuit number.
3. the motor driver of washing machine according to claim 1 or 2, which is characterized in that
The fault control unit detection carries out the rotating speed of the motor of the dehydrating operation, and is threshold value or more in the rotating speed
Change short-circuit number in region.
4. the motor driver of washing machine according to claim 1, which is characterized in that
The fault control unit is detected alternating current, and determines short circuit duration according to the current value.
5. the motor driver of washing machine according to claim 2, which is characterized in that
The fault control unit is detected alternating current, and determines short circuit duration according to the current value.
6. the motor driver of washing machine according to claim 3, which is characterized in that
The fault control unit is detected alternating current, and determines short circuit duration according to the current value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-086710 | 2015-04-21 | ||
| JP2015086710A JP6605836B2 (en) | 2015-04-21 | 2015-04-21 | Motor drive device for washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN106065522A CN106065522A (en) | 2016-11-02 |
| CN106065522B true CN106065522B (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610229038.5A Active CN106065522B (en) | 2015-04-21 | 2016-04-13 | The motor driver of washing machine |
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| Country | Link |
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| JP (1) | JP6605836B2 (en) |
| CN (1) | CN106065522B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639113A (en) * | 2018-12-24 | 2019-04-16 | 沧州华润热电有限公司 | A kind of control circuit and frequency converter control system of frequency converter |
| JP7185538B2 (en) * | 2019-01-17 | 2022-12-07 | 東芝ライフスタイル株式会社 | Inverter device for washing machine |
Citations (5)
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|---|---|---|---|---|
| US3689815A (en) * | 1969-09-12 | 1972-09-05 | Philips Corp | Method of switching a direct-current motor of a washing machine |
| KR20030009217A (en) * | 2001-07-19 | 2003-01-29 | 마쯔시다덴기산교 가부시키가이샤 | Washing machine motor drive device |
| CN101277059A (en) * | 2007-03-28 | 2008-10-01 | 松下电器产业株式会社 | Electric power transformation device |
| CN101899764A (en) * | 2009-05-25 | 2010-12-01 | 株式会社东芝 | The motor drive of rinsing maching |
| US9096964B2 (en) * | 2009-03-02 | 2015-08-04 | BSH Hausgeräte GmbH | Method and circuit arrangement for determining the load and/or unbalance of a laundry drum of a washing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4784207B2 (en) * | 2004-11-18 | 2011-10-05 | パナソニック株式会社 | DC power supply |
| JP2013106455A (en) * | 2011-11-15 | 2013-05-30 | Hitachi Appliances Inc | Dc power-supply device and air conditioner using the same |
-
2015
- 2015-04-21 JP JP2015086710A patent/JP6605836B2/en active Active
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2016
- 2016-04-13 CN CN201610229038.5A patent/CN106065522B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3689815A (en) * | 1969-09-12 | 1972-09-05 | Philips Corp | Method of switching a direct-current motor of a washing machine |
| KR20030009217A (en) * | 2001-07-19 | 2003-01-29 | 마쯔시다덴기산교 가부시키가이샤 | Washing machine motor drive device |
| CN101277059A (en) * | 2007-03-28 | 2008-10-01 | 松下电器产业株式会社 | Electric power transformation device |
| US9096964B2 (en) * | 2009-03-02 | 2015-08-04 | BSH Hausgeräte GmbH | Method and circuit arrangement for determining the load and/or unbalance of a laundry drum of a washing machine |
| CN101899764A (en) * | 2009-05-25 | 2010-12-01 | 株式会社东芝 | The motor drive of rinsing maching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106065522A (en) | 2016-11-02 |
| JP2016202482A (en) | 2016-12-08 |
| JP6605836B2 (en) | 2019-11-13 |
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