CN106065522A - The motor driver of washing machine - Google Patents
The motor driver of washing machine Download PDFInfo
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- CN106065522A CN106065522A CN201610229038.5A CN201610229038A CN106065522A CN 106065522 A CN106065522 A CN 106065522A CN 201610229038 A CN201610229038 A CN 201610229038A CN 106065522 A CN106065522 A CN 106065522A
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- Prior art keywords
- circuit
- short circuit
- short
- current
- alternating current
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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)
- Inverter Devices (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)
Abstract
The motor driver of washing machine, possesses: rectification circuit, is connected in alternating current power supply via reactor；Short-circuit unit, makes short circuit between the input terminal of this rectification circuit；Inverter circuit, is connected to the outlet side of rectification circuit, direct current power is converted into alternating electromotive force, and drives the motor at least producing the rotary driving force for carrying out dehydrating operation；And fault control unit, according to the change of control parameter when carrying out dehydrating operation, change by short-circuit unit number of times of short circuit between the chien shih input terminal of the zero crossing timing of the voltage waveform of alternating current power supply.When repeatedly carrying out short circuit within the half period of alternating current power supply, before current peak in reaching the half period, fault control unit performs to make the electric current decrement proceeding by the time point of the later short action of second time less than the 30% of this current peak and the control less than the 40% of current peak of the electric current increments of adjoint short action, thus makes this peak value increase when there is the curent change caused by short circuit every time.
Description
Technical field
Embodiments of the present invention relate to the laundry possessing reactor between alternating current power supply and rectification circuit
The device that the motor of machine is driven.
Background technology
Such as in Japanese Unexamined Patent Publication 2010-273505 publication, it is connected between alternating current power supply with inverter
Reactor, generate the rectification circuit of DC source and make the AC input terminal of this rectification circuit between short circuit
Unit, within the half period of AC supply voltage, make between AC input terminal repeatedly short circuit, and make electricity
Stream flows to reactor, thus DC source busbar voltage is carried out boosting rectifier control.
But, in the boosting rectifier control of above-mentioned document, when making short circuit to obtain higher boosting effect
When number of times increases, carry out the variation of source current value during short circuit the most every time and can become big, higher hamonic wave can be caused
Electric current increases.It addition, also proposed following technical scheme, i.e. from the zero cross point of AC supply voltage
Proceed by short circuit, and regulate short circuit duration width, thus adjust boosting effect, but it is possible to short
The electromagnetic energy being accumulated in reactor in the time of road is limited.In addition, elongated when short circuit duration
Time, the deformation of source current waveform still can become big, can cause the increase of higher harmonic current.
Summary of the invention
Therefore, the present invention provides the motor driver of a kind of washing machine, and it can obtain higher boosting effect
Really, and the increase of higher harmonic current can be suppressed.
The motor driver of the washing machine according to embodiment, it possesses: rectification circuit, via reactance
Device is connected in alternating current power supply；Short-circuit unit, makes short circuit between the input terminal of this rectification circuit；Inverter
Circuit, is connected to the outlet side of described rectification circuit, direct current power is converted into alternating electromotive force, and drives
At least produce the motor being used for carrying out the rotary driving force of dehydrating operation；And fault control unit, according to
The change of control parameter when carrying out described dehydrating operation, changes by described short-circuit unit in described exchange
The number of times of short circuit between input terminal described in the chien shih of the zero crossing timing of the voltage waveform of power supply.
When repeatedly carrying out described short circuit in the half period in described alternating current power supply, reaching the described half period
Before interior current peak, described fault control unit performs to make to proceed by the later short circuit of second time and moves
The electric current decrement of the time point made is less than the 30% of described current peak and with described short action
The control less than the 40% of described current peak of the electric current increments, thus cause by short circuit in generation every time
Described peak value is made to increase during curent change.
Accompanying drawing explanation
Fig. 1 relates to the first embodiment, is the driving diagrammatically illustrating each motor in washing dryer
The figure of control system.
Fig. 2 is the longitudinal cross-sectional side view of the structure illustrating drum-type washing drying machine.
Fig. 3 is the flow chart of the action diagrammatically illustrating dehydrating operation.
Fig. 4 is the flow chart of the beginning/end determination processing illustrating boosting rectifier control.
Fig. 5 is the flow chart starting to process illustrating boosting rectifier control.
Fig. 6 is to illustrate the flow chart that later short action processes.
Fig. 7 is the figure of the example illustrating the supply voltage of reality, current waveform.
Fig. 8 is an example of the supply voltage during boosting rectifier control illustrating and carrying out patent documentation 1, current waveform
Figure.
Fig. 9 is an example of the result illustrating that the boosting rectifier control to present embodiment measures higher harmonic current value
Figure.
Figure 10 is the example that the boosting rectifier control to patent documentation 1 measures the result of higher harmonic current value
Figure.
Power supply electricity when Figure 11 is to be set to longer relative to the situation shown in Fig. 9 by the output gap of pulse
Pressure, the figure of an example of current waveform.
Figure 12 is the figure illustrating the example to the result that higher harmonic current value is measured.
Figure 13 relates to the second embodiment, is to illustrate to make the most defeated according to the AC current values in step S13
The figure of the numerical example of the time delay of the short circuit pulse gone out and short circuit duration based on each pulse change.
Figure 14 relates to the 3rd embodiment, is the functional block diagram of the structure illustrating control system.
Detailed description of the invention
(the first embodiment)
Below, referring to figs. 1 through Figure 12, the first embodiment is illustrated.Fig. 2 is to illustrate drum-type
The longitudinal cross-sectional side view of the structure of washing dryer.Outer container 1 have header board, back plate, left plate, right plate,
Base plate and top board, and in hollow form, the header board of outer container 1 is formed with through poroid gateway 2.
The header board of this outer container 1 is provided with door 3.User can from front closed state and open state it
Between operate this door 3, when door 3 is closed, gateway 2 is closed, and goes out when door 3 is open
Entrance 2 is opened.It is fixed with tank 4 in the inside of outer container 1.This tank 4 in the cylindrical shape closed below,
And axial line CL is configured to the heeling condition that declines from front to back.This tank 4 is the structure of front openings,
When door 3 is closed, door 3 with airtight conditions sealing flume 4 before.
In the back plate of tank 4, it is fixed with Rolling motor 5 being positioned at the position outside tank 4.This cylinder
Motor 5 is made up of the DC brushless motor that speed is controlled, and the rotary shaft 6 of Rolling motor 5 is towards tank 4
Internal prominent.The axial line CL that this rotary shaft 6 is configured to tank 4 overlaps, in rotary shaft 6,
It is fixed with cylinder 7 being positioned at the position within tank 4.This cylinder 7 is in the cylindrical shape closed below, in rolling
Under the state that cylinder motor 5 runs, this cylinder 7 rotates integratedly with rotary shaft 6.Before this cylinder 7
From rear facing to gateway 2 before tank 4, when door 3 is open, washings is from front
By before gateway 2, tank 4 and before cylinder 7 in and out of the inside of cylinder 7.
Being formed with multiple through hole 8 on cylinder 7, the inner space of cylinder 7 is respectively by multiple through holes
8 are connected with the inner space of tank 4.This cylinder 7 is fixed with multiple baffle plate 9.Along with cylinder 7
Rotating, these multiple baffle plates 9 each along the circumferential direction move, in cylinder 7 centered by axial line CL
Washings is hung on multiple baffle plate 9, and falls because of the effect of gravity after along the circumferential direction moving
Under, thus it is stirred.
It is fixed with feed water valve 10 in the inside of outer container 1.This feed water valve 10 has entrance and outlet, supplies water
The entrance of valve 10 is connected on the faucet of water supply pipe.This feed water valve 10 is with feed water valve motor 11 (ginseng
According to Fig. 2) it is driving source, and according to the rotation amount of feed water valve motor 11, at open state and closed state
Between switch feed water valve 10 outlet.The outlet of this feed water valve 10 is connected on water injection box 12, is supplying water
Under the state that valve 10 is open, tap water is injected in water injection box 12 by feed water valve 10, and at feed water valve
Under 10 states closed, tap water will not be injected in water injection box 12.In the inside of outer container 1, this water filling
Box 12 is fixed on position more higher than tank 4, and this water injection box 12 has the water filling port 13 of tubular.
This water filling port 13 is inserted into the inside of tank 4, is injected in water injection box 12 from the beginning from feed water valve 10
Water is injected into the inside of tank 4 from water filling port 13.
On tank 4, connect in the position being positioned at lowest part and have the upper end of drain pipe 14, at drain pipe
Drain valve 15 it is provided with on 14.This drain valve 15 is driving source with drain valve motor 16 (with reference to Fig. 2),
And according to the rotation amount of drain valve motor 16, between open state and closed state, switch this drain valve
15.When this drain valve 15 is closed, the tap water being injected in tank 4 from water filling port 13 stores
Stay in tank 4, and when drain valve 15 is open, the tap water in tank 4 passes through drain pipe
14 outsides being discharged to tank 4.
On the base plate of outer container 1, it is fixed with main air duct 17 being positioned at the position below tank 4.This main air
Road 17, in the tubular of sensing fore-and-aft direction, connects in the leading section of main air duct 17 and has the lower end of primary air separating duct 18
Portion.This primary air separating duct 18 is in the tubular of sensing above-below direction, and the upper end of primary air separating duct 18 is by tank 4
Leading section is connected with the inner space of tank 4.Rearward end at main air duct 17 is fixed with Blower Housing 19.
This Blower Housing 19 has through poroid air entry 20 and the air vent 21 of tubular, Blower Housing 19
Inner space be connected via the inner space of air entry 20 with main air duct 17.
On Blower Housing 19, it is fixed with blower motor 22 being positioned at the position outside Blower Housing 19.
This blower motor 22 has the rotary shaft 23 prominent towards the inside of Blower Housing 19, in rotary shaft 23,
It is fixed with blower fan 24 being positioned at the position within Blower Housing 19.This blower fan 24 is to suck sky from direction of principal axis
Gas the centrifugal fan towards radial direction air-out, the air entry 20 of Blower Housing 19 is from the axle of blower fan 24
Direction faces toward blower fan 24, and the air vent 21 of Blower Housing 19 faces toward blower fan 24 from the radial direction of blower fan 24.
The air vent 21 of Blower Housing 19 connects the bottom in air channel 25 after having.This rear air channel 25
In the tubular of sensing above-below direction, the upper end in rear air channel 25 is by the rearward end of tank 4 and tank 4
Inner space connects.Air channel 25, Blower Housing 19, main air duct 17, primary air separating duct 18 and water after these
Groove 4 constitutes respectively with the inner space of tank 4 as starting point and the ring-type circulation air path 26 of terminal,
When under the state that door 3 is closed, blower motor 22 runs, blower fan 24 rotates towards fixed-direction, thus tank 4
Interior air attracted in Blower Housing 19 by main air duct 17 in primary air separating duct 18, and from blower fan
By returning in tank 4 in rear air channel 25 in housing 19.
Compressor (compressor) 27 it is fixed with in the inside of outer container 1.This compressor 27 is configured in circulation
The outside in air channel 26, and there is the outlet of discharging refrigerant and suck the suction inlet of cold-producing medium.This pressure
Contracting device 27 is driving source with compressor motor 28 (with reference to Fig. 2), and compressor motor 28 is controlled by speed
DC brushless motor constitute.
Freezing machine (condenser) 29 it is fixed with in the inside of main air duct 17.This freezing machine 29 is for sky
Gas heats, by being fixed on snakelike curved respectively with contact condition by plate-shaped multiple heating fins 31
The outer peripheral face of a bent refrigerant pipe 30 and constitute.The refrigerant pipe 30 of this freezing machine 29 is connected to pressure
In the outlet of contracting device 27, when compressor motor 28 runs, from the outlet of compressor 27
The cold-producing medium discharged enters in the refrigerant pipe 30 of freezing machine 29.
Fig. 1 diagrammatically show Rolling motor 5, blower motor 22 and the driving of compressor motor 28
Control system.Inverter circuit 34 is by six IGBT (switch element) 35a～35f of three phase bridge
Constitute, be connected between the colelctor electrode and emitter stage of each IGBT35a～35f and have fly-wheel diode 36a～36f.
Each phase output terminals of inverter circuit 34 is connected on each phase winding of Rolling motor 5.
The emitter stage of IGBT35d, 35e, 35f of lower brachium pontis side is via shunt resistance 37u, 37v, 37w
Ground connection.It addition, the emitter stage of IGBT35d, 35e, 35f and shunt resistance 37u, 37v, 37w's is total to
It is connected on the input terminal of control circuit (microprocessor, microcomputer) 42A with junction point.
In the inside of control circuit 42A, although not shown, but by being configured to containing operational amplifier etc.
Level conversion (level shift) circuit so that the terminal voltage amplification of shunt resistance 37u～37w making
The output area of its increment signal is maintained at the mode of positive side and gives (such as 0～+3.3V) bias.It addition,
Control circuit 42A has following function, i.e., in order to prevent the upper and lower bridge arm short circuit at inverter circuit 34
Time damage circuit and carry out overcurrent detection.
And, for blower motor 22, it is configured with the inverter circuit 38 and shunt resistance equally constituted
39 (u, v, w), for compressor motor 28, are configured with inverter circuit 40 and shunt resistance 41
(u、v、w).By another control circuit 42B (microprocessor, microcomputer, short circuit control
Unit processed) inverter circuit 38 and inverter circuit 40 are controlled, control circuit 42A, 42B
Two-way communication based on serial communication can be carried out.
Input side at inverter circuit 34,38,40 is connected to driving power circuit 43.Drive electricity consumption
The end side of source circuit 43 is connected with the alternating current power supply of 100V via reactor (inductive reactance) 44, should
Driving power circuit 43 possesses the full-wave rectifying circuit 45 being made up of diode bridge and is connected in series in
Two capacitors 46a, 46b of the outlet side of full-wave rectifying circuit 45.Capacitor 46a, 46b's is common
Junction point is connected to the side of the input terminal of full-wave rectifying circuit 45.Use reactance described later not performing
In the case of the boost action that device 44 is carried out, the alternating current power supply of 100V is carried out by driving power circuit 43
Multiplication of voltage all wave rectification, and the DC voltage of about 280V is supplied to inverter circuit 34 etc..
The input terminal of full-wave rectifying circuit 45 is connected in parallel another that be made up of diode bridge equally
Individual full-wave rectifying circuit 47 (short-circuit unit), is connected between the lead-out terminal of full-wave rectifying circuit 47
IGBT48 (short-circuit unit).The conducting being carried out IGBT48 by control circuit 42B turns off control.
Resistance 49a and the string of resistance 49b it is connected between the input terminal of inverter circuit 34,38
Connection circuit, resistance 50a and the series circuit of resistance 50b, respective common connecting point is connected to control electricity
On the input terminal of road 42A, 42B.Control circuit 42A, 42B are by referring to above-mentioned each common connecting point
Voltage detect the driving supply voltage being input to inverter 34,38.
It addition, for Rolling motor 5, be configured with such as by structures such as Hall IC to detect rotor-position
The position sensor 51 (u, v, w) become, the sensor signal of position sensor 51 output is given to
Control circuit 42A.It addition, be inserted with such as by current transformer between alternating current power supply and reactor 44
(CT) current sensor 52 of composition such as, the sensor signal of current sensor 52 output is given to
Control circuit 42B.
The electric current of each phase winding of flow direction motor 5,22,28 is detected by control circuit 42A, 42B,
And according to the phase theta of rotating excitation field of this current value presumption primary side and angular velocity of rotation ω, and right
Three-phase current carries out rectangular coordinates transformation and dq (direct-quadrature, straight-to hand over) coordinate transform, from
And obtain excitation current component Id, torque current component Iq.Then, when giving speed command from outside,
Control circuit 42A, 42B according to the phase theta deduced and angular velocity of rotation ω and current component Id,
Iq, generates current-order Idref, Iqref, if transforming it into voltage instruction Vd, Vq, then carries out straight
Angular coordinate conversion and three-phase coordinate transform.Finally, generate driving signal as pwm signal, and
Each phase winding via inverter circuit 34,38,40 output to motor 5,22,28.
In above structure, inverter circuit 34, control circuit 42A and control circuit 42B, drive
Employ power circuit 43, reactor 44, rectification circuit 47, IGBT48 constitute driving means 60.
It follows that the effect of present embodiment is described with reference to Fig. 3 to Figure 12.Fig. 3 is diagrammatically to illustrate
The flow chart of the stroke of dehydrating operation.First, add in the way of making the rotating speed of cylinder 7 be gradually increasing
Speed (S1), when rotating speed reaches 1000rpm (judged result of S2 is "Yes"), arranges liter voltage-controlled
The license (S3) of system.Afterwards, at the end of dewatering time set in advance (judged result of S4 is "Yes"),
Remove the license (S5) of boosting rectifier control.Then, brake action (S6) is made, when the rotation of cylinder 7
During stopping (judged result of S7 is "Yes"), dehydrating operation terminates.
Fig. 4 is that the beginning/end illustrating the boosting rectifier control performed along with every 1 millisecond of interruption occurred is sentenced
The fixed flow chart processed.In step S3 shown in Fig. 3, if being provided with the license (S11 of boosting rectifier control
Judged result be "Yes"), then judge whether current state (status) is " in boosting rectifier control "
(S12).If it addition, be not provided with the license (judged result of S11 is "No") of boosting rectifier control,
Then remove the state (S16) of " in boosting rectifier control ", and end interrupt processes.
In step s 12, if current state is not " in boosting rectifier control " (judged result is "No"),
Then judge that whether the alternating current power supply electric current of this time point is more than or equal to set in advance for proceeding by boosting
The value (boosting initial value, control parameter) (S13) controlled.Boosting initial value at power consumption is such as
It is about 6A during 550W.Here, if greater than being equal to boosting initial value (judged result is "Yes"),
The state (S14) of " in boosting rectifier control " is then set, and end interrupt processes；Start if less than boosting
Value (judged result is "No"), then directly end interrupt processes.
It addition, in step s 12, if current state is that " in boosting rectifier control " (judged result is
"Yes"), then judge that whether the alternating current power supply electric current of this time point is less than or equal to set in advance for stopping
The only value (boosting stop value) (S15) of boosting rectifier control.(knot is judged if less than equal to boosting stop value
Fruit is "Yes"), then transfer to step S16；If it exceeds boosting stop value (judged result is "No"),
Then end interrupt processes.
Fig. 5 is to illustrate to hold along with every 1 millisecond of interruption occurred in the same manner as flow process as shown in Figure 4
The flow chart starting to process of the boosting rectifier control of row.If current state is " in boosting rectifier control " (S21
Judged result be "Yes"), then be arranged to the alternating current power supply current value according to this time point and
Supply frequency be 50Hz or 60Hz set from time delay that zero crossing is lighted (such as 1.5 milliseconds～
2 milliseconds), and the tripping action (conducting of IGBT48) initially to carry out time (pulse width,
Such as 0.6 millisecond) output short-circuit pulse (S22).On the other hand, if current state is not " to rise
In voltage-controlled system " (judged result of S21 is "No"), then remove the output of short circuit pulse, namely
Do not carry out short action (S23), and end interrupt processes.
Fig. 6 is to be shown at the later short action of second time that the half period of each alternating current power supply performs
The flow chart of reason.If it is current just at output short-circuit pulse (after just having exported short circuit pulse first) (S31
Judged result be "Yes"), then judge that the rotating speed (control parameter) of cylinder 7 is whether more than or equal to 1600rpm
(S32).If rotating speed is not up to 1600rpm (judged result is "No"), then by short circuit pulse
Output number is set to one, is namely set to the short circuit pulse (S35) only exported first, and at end interrupt
Reason.
In step s 32, if rotating speed is more than or equal to 1600rpm (judged result is "Yes"), then
Judge that whether the direct current power source voltage of this time point is more than or equal to 295V (example of target voltage) (S33).
If direct current power source voltage is more than or equal to 295V (judged result is "Yes"), then with " 6 " as limit
Short circuit pulse number is made to increase by one (S34).Additionally, when exporting multiple short circuit pulse, the output of pulse
Interval is set to such as 0.2 millisecond.It addition, the width of the such as pulse of second time and third time output is for example,
0.15 millisecond, for example, 0.075 millisecond such mode of width of the pulse of the 4th time to the 6th output,
The periodically width of chopped pulse.It addition, in step S33, if direct current power source voltage is less than 295V
(judged result is "No"), then make short circuit pulse number than the arteries and veins of output in the current exchange half period
Strokes per minute reduces by one (S36).
Fig. 7 shows the supply voltage of reality, an example of current waveform.Be commercial ac power source be specified
The situation that 50Hz/100V, direct current power source voltage are 304V, short circuit pulse number is " 4 ".In this case,
Proceed by the reduced value of the electric current of the time point of the later short action of second time, relative to exchange half cycle
The decrement of the current peak in the phase and with the value added of described short action electric current together and increasing thereof
Dosage is as follows.
| Short circuit number of times | Reduced value (decrement) | Value added (increments) |
| 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 regulation in technical scheme 1, when repeatedly carrying out short circuit within the half period of alternating current power supply,
Before current peak in reaching this half period, these boosting rectifier control conditions control into, make to proceed by
The decrement of the electric current of the time point of later short action is less than the current peak in the half period
30%, and make the electric current increments with described short action less than the 40% of described current peak.
On the other hand, Fig. 8 shows that the liter carrying out patent documentation 1 under identical Power Supplies Condition is voltage-controlled
The situation of system (short circuit pulse number is " 2 ").Proceed by the time point of the later short action of second time
The reduced value of electric current and decrement and with the value added of this short action electric current together and increments
As follows.
| Short circuit number of times | Reduced value (decrement) | Value added (increments) |
| 2nd time | 7.2A (40%) | 15.2A (84%) |
Understand, in terms of flowing to the change of current waveform of reactor 44, mild, in rectification in Fig. 7
After direct current power source voltage aspect, be also that the variation in Fig. 7 is less.
Fig. 9 and Figure 10 showing, the boosting rectifier control to present embodiment with patent documentation 1 measures high order
One example of the result of harmonic current value.The situation of the patent document 1 shown in Figure 10, the 9th, 11,13 with
And each higher hamonic wave of 19 times has exceeded limits value (100% boundary, about the IEC specification of washing machine).
In contrast, the situation of the present embodiment shown in Fig. 9, until all of high order of the 40th time
Harmonic wave is respectively less than limits value.
It addition, Figure 11 shows that the situation relative to the present embodiment shown in Fig. 9 is by the outlet chamber of pulse
Every the situation (short circuit pulse number is " 3 ") being set as longer 0.5 millisecond.This is to maintain above-mentioned reality
Execute the substantially critical condition of the boosting rectifier control condition of mode.
| Short circuit number of times | Reduced value (decrement) | Value added (increments) |
| 2nd time | 2.5A (17%) | 4.0A (27%) |
| 3rd time | 2.0A (13%) | 6.0A (40%) |
Its result, as shown in figure 12, only the 23rd time higher harmonic current has exceeded limits value.
As it has been described above, according to present embodiment, control circuit 42B is according to control when carrying out dehydrating operation
The change of parameter, changes by IGBT48 at the chien shih of the zero crossing timing of the voltage waveform of alternating current power supply
The number of times of short circuit between the input terminal of rectification circuit 45.And, when within the half period of alternating current power supply repeatedly
When carrying out described short action, before the current peak in reaching the described half period, perform to make to start into
The electric current decrement of the time point of the row later short action of second time less than described current peak 30%,
And with described short action electric current increments less than described current peak 40% control, thus
Occur to make described peak value increase during the curent change caused by short circuit every time.By rising by this way
Voltage-controlled system, can obtain higher boosting effect, and can suppress the increase of higher harmonic current.
It addition, the detection of control circuit 42B is from the DC voltage of rectification circuit 45 output, and so that this direct current
Voltage maintains the mode of target voltage to change short circuit number of times, therefore, it is possible to make boosting rectifier control stabilisation.By
This, it is possible to avoid the occurrence of and cause because of the excessive high voltage of temporary generation circuit component to be damaged or because of boosting
Not enough and cause the phenomenon of degradation under the rotating speed of cylinder 7.
Further, the detection of control circuit 42B carries out the rotating speed of the motor 5 of dehydrating operation, and at this rotating speed
For region more than threshold value changes short circuit number of times.Thereby, it is possible to obtain required in the region that rotating speed is high
High voltage, it is possible to efficiently perform boosting rectifier control.
(the second embodiment)
Figure 13 relates to the second embodiment, gives identical accompanying drawing to the part identical with the first embodiment
Labelling also omits the description, and illustrates different parts below.In this second embodiment, at Fig. 4
In shown step S13, change the short circuit pulse that exports first according to the AC current values of this time point
Time delay, and also change short circuit duration based on each pulse (pulse width).At current value with 0.6A
For unit from 6A start to maximum more than 14.4A, and in the case of supply frequency is 50Hz, make
Time delay starts to change to 2.490 milliseconds from 2.152 milliseconds in units of 0.024 millisecond.It addition, make
The width of short circuit pulse changes to 0.647 millisecond of (current value from 0.579 millisecond in units of 0.0184 millisecond
More than or equal to being identical value during 10.2A).And, by the pulse width of second time to the 4th output respectively
It is set to primary 1/3,1/4,1/7, and the 5th later pulse width is set to identical with the 4th time
Width.
As it has been described above, according to the second embodiment, control circuit 42B is according to the electric current of alternating current power supply electric current
Value determines short circuit duration, therefore, it is possible to make the reducing effect optimization of higher hamonic wave according to current value.
(the 3rd embodiment)
Figure 14 shows the 3rd embodiment.In the first embodiment, according to the flow process shown in Fig. 6
Figure is controlled, so that the output number of short circuit pulse is incremented by, successively decreases.In contrast, real the 3rd
Execute in mode, perform to use the control system shown in Figure 14 (with based on control in the half period of each exchange
The control system carrying out function modoularization centered by the software processes of circuit 42B and obtain) process that carries out.
Target voltage is set as such as 295V etc. by voltage control division 61.Voltage detection department 62 comprises in Fig. 1 and shows
A/D converter etc. within the resistive element 50a gone out and resistive element 50b and control circuit 42B, and
By the DC voltage value that they detections are actual.Then, subtractor 63 calculates target voltage and reality electricity
Difference between pressure, and it is input to voltage PI portion 64.
The voltage PI portion 64 differential voltage to being inputted carries out PI, and (Proportional-Integral: ratio is amassed
Point) control computing, the output short-circuit duration width as this operation result.Such as, by the ratio of PI gain
Example item is set as 0.05%/V, integral term is set as the 10%/V second etc., and is arranged to make short circuit duration width
Spend 0～20% in the range of the exchange half period.Time width-umber of pulse converter section 65 exports and is inputted
Short circuit duration width corresponding short circuit pulse number.Short circuit pulse output unit 66 generates and the short circuit inputted
The corresponding gate drive signal of umber of pulse, and export the grid of IGBT48.
As it has been described above, according to the 3rd embodiment, control circuit 42B is by target voltage and reality
Difference between direct current power source voltage carries out PI and controls to determine short circuit pulse number.Thereby, it is possible to it is so that real
The direct current power source voltage on border is similar to the mode of target voltage and carries out boosting rectifier control.
(other embodiments)
Can also integral traffic control circuit 42A, 42B, thus be arranged to a control circuit.
Can also suitably change pulse width when carrying out short circuit by IGBT, from prolonging that zero crossing is lighted
Time late.
Thyristor is not limited in IGBT, it is possible to use bipolar transistor or
MOSFET。
It is only an example to the setting carried out to rotating speed and voltage, electric current, threshold value that power is relevant, as long as
Suitably change according to individual other design.
Time delay of short circuit pulse and the concrete numerical value of the output gap of each pulse, pulse width etc. first
Also it is only an example, as long as being carried out after suitably changing according to individual other design.
It is readily adaptable for use in the washing machine without functions/drying.
The several embodiments of the present invention are illustrated, but these embodiments be as an example and
Propose, it is not intended that limit the protection domain of invention.The embodiment of these novelties can be each with other
Kind of mode is implemented, and can carry out various omission, replaces, becomes in the protection domain without departing from invention objective
More.These embodiments and deformation thereof are included in protection domain and the objective of invention, and are included in power
Inventing and in the protection domain of equivalent described in profit claim.
Claims (6)
1. the motor driver of a washing machine, it is characterised in that possess:
Rectification circuit, is connected in alternating current power supply via reactor；
Short-circuit unit, makes short circuit between the input terminal of this rectification circuit；
Inverter circuit, is connected to the outlet side of described rectification circuit, direct current power is converted into alternating current
Power, and drive the motor at least producing the rotary driving force for carrying out dehydrating operation；And
Fault control unit, according to the change of control parameter when carrying out described dehydrating operation, change is passed through
Described short-circuit unit is at input terminal described in the chien shih of the zero crossing timing of the voltage waveform of described alternating current power supply
Between short circuit number of times；
When repeatedly carrying out described short circuit in the half period in described alternating current power supply, reaching the described half period
Before interior current peak, described fault control unit performs to make to proceed by the later short circuit of second time and moves
The electric current decrement of the time point made is less than the 30% of described current peak and with described short action
The control less than the 40% of described current peak of the electric current increments, thus cause by short circuit in generation every time
Described peak value is made to increase during curent change.
The motor driver of washing machine the most according to claim 1, it is characterised in that
Described fault control unit detects the DC voltage that exports from described rectification circuit, and so that described directly
Stream voltage maintains the mode of target voltage to change short circuit number of times.
The motor driver of washing machine the most according to claim 1 and 2, it is characterised in that
The detection of described fault control unit carries out the rotating speed of the motor of described dehydrating operation, and at described rotating speed
For region more than threshold value changes short circuit number of times.
The motor driver of washing machine the most according to claim 1, it is characterised in that
Alternating current is detected by described fault control unit, and determines short circuit duration according to this current value.
The motor driver of washing machine the most according to claim 2, it is characterised in that
Alternating current is detected by described fault control unit, and determines short circuit duration according to this current value.
The motor driver of washing machine the most according to claim 3, it is characterised in that
Alternating current is detected by described fault control unit, and determines short circuit duration according to this current value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015086710A JP6605836B2 (en) | 2015-04-21 | 2015-04-21 | Motor drive device for washing machine |
| JP2015-086710 | 2015-04-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106065522A true CN106065522A (en) | 2016-11-02 |
| CN106065522B CN106065522B (en) | 2018-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610229038.5A Active CN106065522B (en) | 2015-04-21 | 2016-04-13 | The motor driver of washing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6605836B2 (en) |
| CN (1) | CN106065522B (en) |
Cited By (1)
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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2015
- 2015-04-21 JP JP2015086710A patent/JP6605836B2/en active Active
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- 2016-04-13 CN CN201610229038.5A patent/CN106065522B/en active Active
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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 |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016202482A (en) | 2016-12-08 |
| JP6605836B2 (en) | 2019-11-13 |
| CN106065522B (en) | 2018-08-24 |
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