CN107492876A - SPM and controller of air conditioner - Google Patents

SPM and controller of air conditioner Download PDF

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Publication number
CN107492876A
CN107492876A CN201710816079.9A CN201710816079A CN107492876A CN 107492876 A CN107492876 A CN 107492876A CN 201710816079 A CN201710816079 A CN 201710816079A CN 107492876 A CN107492876 A CN 107492876A
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CN
China
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output
module
input
adjustment circuit
gate
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CN201710816079.9A
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Chinese (zh)
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CN107492876B (en
Inventor
冯宇翔
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广东美的制冷设备有限公司
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Priority to CN201710816079.9A priority Critical patent/CN107492876B/en
Publication of CN107492876A publication Critical patent/CN107492876A/en
Priority claimed from PCT/CN2018/076068 external-priority patent/WO2019047474A1/en
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Publication of CN107492876B publication Critical patent/CN107492876B/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/045Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

Abstract

The invention provides a kind of SPM and controller of air conditioner, by increasing an adjustment circuit between each drive circuit internally and corresponding IGBT pipes, the adjustment circuit can detect the change of SPM low-pressure area voltage value in real time, and its low-voltage power supply fluctuation cause magnitude of voltage it is too low make module stop export so that cause the energy storage of motor cause inside modules IGBT pipes savings electric charge when, the electric charge that can be put aside to inside modules IGBT pipes is released, and cause when supply voltage recovers normal work, a suitable time is selected to continue completely to release above-mentioned electric charge by timing, to avoid impact of its electric charge on inside modules circuit from influenceing the reliability of its work.

Description

SPM and controller of air conditioner

Technical field

The present invention relates to SPM technical field, more particularly to a kind of SPM and air conditioner control Device.

Background technology

SPM, i.e. IPM (Intelligent Power Module) are a kind of by power electronics and integrated electricity The power drive class product that road technique combines.Device for power switching and high-voltage driving circuit are integrated in one by SPM Rise, and be internally provided with the failure detector circuits such as overvoltage, overcurrent and overheat.On the one hand SPM receives MCU's Control signal, driving subsequent conditioning circuit work, on the other hand sends the state detection signal of system back to MCU.SPM is outstanding It is suitable for the frequency converter of motor and various inverters, is frequency control, metallurgical machinery, electric propulsion, servo-drive, A kind of desired power level electronic device of frequency-conversion domestic electric appliances.

The circuit structure of existing IPM modules 100 including HVIC as shown in figure 1, manage (High Voltage Integrated Circuit, high voltage integrated circuit chip) 111, bridge arm IGBT pipes (Insulated Gate on three-phase Bipolar Transistor, insulated gate bipolar transistor) 111,112, bridge arm IGBT pipes 114 under 113, and three-phase, 115th, 116, the wherein inside of HVIC pipes 111 includes UH drive circuits 101, the VH drivings connected respectively at bridge arm IGBT pipes on three-phase Circuit 102, WH drive circuits 103, and respectively at the UL drive circuits 104 of bridge arm IGBT connections, VL drive circuits under three-phase 105 and WL drive circuits 106, this six drive circuits drive respectively under the control for the six tunnel control signals that IPM modules 100 input Six IGBT pipes carry out on off state switching corresponding to dynamic.Recommendation circuit during its IPM 100 real work of module as shown in Fig. 2 Its IPM module 100 is connected by six tunnel control signals of input with MCU200, U, V, W three-phase output end of IPM modules 100 The three-phase windings of motor 139 are connected, electric capacity 135,136,137 is respectively to connect three-phase output end and corresponding phase high voltage power supply just The bootstrap capacitor at end, the on off state of six IGBT pipes of IPM modules 100 is controlled by six tunnel control signals of MCU200 outputs Switch over, three-phase driving signal corresponding to output to motor 139, so as to the operation of motor 139.In practical application, IPM The working environment of module 100 is more severe, and power supply has situations such as unstable, causes the low-voltage power supply electricity of IPM modules 100 The reasons such as pressure fluctuation cause power down suddenly, then IPM modules 100 can stop output suddenly, and because the motor 139 has inductance Energy storage can produce induced electromotive force, and its induced electromotive force can be transmitted to IPM modules 100, make to put aside electric charge on its internal IGBT pipe, Can not release in time in a short time, and if if IPM modules 100 recover normal work when power up is stable, in it Still residual charge on portion's IGBT pipes, electric discharge may be produced to IPM modules 100 in next normal switch cycles, influence IPM modules Effective driving to load motor, and be possible to form IPM inside modules circuit unnecessary electric charge impact, it is long-term to influence its Reliability, hinder SPM being widely applied in frequency conversion field.

The content of the invention

It is a primary object of the present invention to provide a kind of SPM and controller of air conditioner, it is therefore intended that solve intelligence Energy power model is in the course of the work because the unstable of power supply causes IGBT pipes savings electric charge inside SPM It can not in short-term release so as to influence its effective driving to motor, and its module functional reliability is influenceed on module generation impact and asked Topic.

To achieve the above object, a kind of SPM provided by the invention, including bridge arm IGBT pipes and three on three-phase Bridge arm IGBT is managed under phase, and corresponding with each IGBT pipe in bridge arm IGBT pipes under bridge arm IGBT pipes on the three-phase and three-phase Drive circuit and adjustment circuit;

Each described drive circuit output end connects the signal input part of the adjustment circuit corresponding to each, each The grid of each IGBT corresponding to the signal output part connection of the individual adjustment circuit;

On the three-phase in bridge arm IGBT pipes the power end of adjustment circuit corresponding to each IGBT pipe positive pole and negative pole The higher-pressure region power supply positive pole and negative pole of corresponding phase are connected respectively;Each IGBT pipes pair in bridge arm IGBT pipes under the three-phase The positive pole and negative pole of the power end for the adjustment circuit answered connect the positive pole of the SPM low-pressure area power supply respectively And negative pole;Wherein,

The adjustment circuit is used for the magnitude of voltage for detecting its power end, when the magnitude of voltage is less than predetermined voltage threshold, The adjustment circuit cuts off the drive circuit and exports to the drive signal of corresponding IGBT pipes and start timing, when timing time not Reach the goal-selling time, and when the magnitude of voltage is more than or equal to the predetermined voltage threshold, the adjustment circuit will be right The electric charge of IGBT pipes is answered to be released;When timing time reaches the goal-selling time, the drive circuit is controlled to export Drive signal is managed to corresponding IGBT.

In a kind of possible design, each adjustment circuit includes voltage detection module, counting module, output module And first switch;

The power end of the input of the voltage detection module, the power end of the counting module and the output module is mutual Even, the power end of the adjustment circuit is formed;The input with the counting module respectively of the output end of the voltage detection module End connects with the control terminal of the first switch;The output end of the counting module connects the control terminal of the output module;Institute The input for stating output module is the signal input part of the adjustment circuit, and the output end of the output module connects described first The input of switch, the output end of the first switch are the signal output part of the adjustment circuit;Wherein,

The voltage detection module, for being less than predeterminated voltage threshold in the magnitude of voltage for detecting the adjustment circuit input During value, control the counting module to start timing, and control the first switch to switch to disconnect by connection during normal work;

The counting module, for when starting timing, output the first trigger signal control output module to export low resistance state;

When timing time is not up to the goal-selling time, and the magnitude of voltage is more than or equal to the predetermined voltage threshold When, the low resistance state of the output module output is released the electric charge of corresponding IGBT pipes;When timing time reaches described default During the object time, the counting module exports the second trigger signal and controls the drive circuit output drive signal to corresponding IGBT is managed.

In a kind of possible design, the counting module includes the first NOT gate and counter;

The input of first NOT gate is the counting module input, described in the output end connection of first NOT gate Counter input, the counter output are the counting module output end.

In a kind of possible design, the voltage detection module includes comparator, voltage source;

The in-phase end of the comparator is connected with the adjustment circuit power end positive pole, the positive pole connection institute of the voltage source The end of oppisite phase of comparator is stated, the negative pole of the voltage source is connected with the adjustment circuit power end negative pole.

In a kind of possible design, the output module includes second switch, the 3rd switch, the first PMOS and second NMOS tube;

The source electrode point of the input of the second switch, the first choice end of the 3rd switch and first PMOS It is not connected with the adjustment circuit power end positive pole, the control terminal of output end connection the 3rd switch of the second switch;

Second selection end of the 3rd switch connects the grid of first PMOS, the fixing end of the 3rd switch The grid of second NMOS tube is connected, the drain electrode of first PMOS and the drain electrode connection end of second NMOS tube are institute Output module output end is stated, the second NMOS tube source electrode is connected with the adjustment circuit power end negative pole.

In a kind of possible design, the output module also includes shaping unit;

The output end of the second switch connects the input of the shaping unit, and the output end of the shaping unit is institute State the control terminal of the 3rd switch, the shaping unit be second switch output control signal shaping after output to described the The control terminal of three switches.

In a kind of possible design, the shaping unit includes the first NOT gate and the second NOT gate;

The input of first NOT gate is the input of the shaping unit, and the output end of first NOT gate connects institute The input of the second NOT gate is stated, the output end of second NOT gate is the output end of the shaping unit.

In a kind of possible design, each described adjustment circuit also includes shaping amplification module:

The shaping amplification module input connects the input of the adjustment circuit, the shaping amplification module output end Connect the input of the output module, the shaping amplification module be amplified for the input end signal of the adjustment circuit and Exported after shaping to the input of the output module.

In a kind of possible design, the shaping amplification module includes the 3rd NOT gate and the 4th NOT gate;

The input of 3rd NOT gate is the input of the shaping amplification module, and the output end of the 3rd NOT gate connects The input of the 4th NOT gate is connect, the output end of the 4th NOT gate is the output end of shaping amplification module.

A kind of metal-oxide-semiconductor size described in possible design in the 3rd NOT gate is metal-oxide-semiconductor size in the 4th NOT gate 1/2.

To achieve the above object, the present invention also provides a kind of controller of air conditioner, and the air conditioner includes described intelligence Power model.

SPM provided by the invention, by increasing between each drive circuit internally and corresponding IGBT pipes Add an adjustment circuit, the adjustment circuit can detect the change of IPM module low-pressure area voltage values in real time, and be supplied in its low pressure Electric power-supply fluctuation cause magnitude of voltage it is too low make module stop output so that so that the energy storage of motor causes inside modules When IGBT pipes put aside electric charge, the drive signal of driving output and IGBT pipes can be initially switched off so that IGBT pipes savings electric charge is first carried out Naturally release, now the adjustment circuit starts timing, then when low-voltage power supply recovers normal, if magnitude of voltage is reduced to The time length of recovery exceedes the object time, and then the drive signal of direct controlling and driving circuit output arrives corresponding IGBT and managed, if electric The time that pressure value is reduced to recovery is less than the object time, then timing is to exporting in the remaining time of object time when power taking pressure is recovered Low resistance state is further quickly released to IGBT pipes savings electric charge.It ensure that to be quickly obtained in IGBT pipes savings electric charge and let out Put, and can shortens the time that IPM modules are recovered in low-voltage power supply voltage pulsation, module is more quickly recovered normal Work, makes motor effectively be driven, and avoid impact of the electric power storage lotus on module simultaneously to influence its functional reliability.

Brief description of the drawings

Fig. 1 is the electrical block diagram of SPM in the prior art;

Fig. 2 is the circuit diagram of SPM real work in the prior art;

Fig. 3 is the electrical block diagram of SPM of the present invention;

Fig. 4 is the particular circuit configurations schematic diagram of output regulation circuit in Fig. 3.

Embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

Reference picture 3, Fig. 3 is the structural representation of IPM modules 4100 that first embodiment of the invention provides, for the ease of saying It is bright, it illustrate only the part related to the embodiment of the present invention.

In the present embodiment, the IPM modules 4100 include bridge arm IGBT pipes and bridge arm IGBT pipes under three-phase on three-phase, and Drive circuit corresponding with each IGBT pipe in bridge arm IGBT pipes under bridge arm IGBT pipes on three-phase and three-phase and adjustment circuit;

Each drive circuit output end connects the signal input part of each corresponding adjustment circuit, each adjustment electricity Each IGBT grid corresponding to the signal output part connection on road;

The positive pole of the power end of adjustment circuit corresponding to each IGBT pipe and negative pole are distinguished in bridge arm IGBT pipes on three-phase The higher-pressure region power supply positive pole and negative pole of the corresponding phase of connection;Adjusted under three-phase in bridge arm IGBT pipes corresponding to each IGBT pipes The positive pole and negative pole of the power end of circuit connect the positive pole and negative pole of the low-pressure area power supply of SPM 4100 respectively;Its In,

Adjustment circuit is used for the magnitude of voltage for detecting its power end, when magnitude of voltage is less than predetermined threshold value, adjustment circuit cut-out Drive circuit exports to the drive signal of corresponding IGBT pipes and starts timing, when timing time is not up to the goal-selling time, and When magnitude of voltage is more than or equal to predetermined threshold value, adjustment circuit is released the electric charge of corresponding IGBT pipes;When timing time reaches During to the goal-selling time, control drive circuit output drive signal to corresponding IGBT is managed.

In the present embodiment, bridge arm IGBT pipes are respectively bridge arm IGBT pipes 4121 in U phases, bridge arm IGBT pipes in V phases on three-phase Bridge arm IGBT pipes 4123 in 4122 and W phases, bridge arm IGBT pipes are respectively bridge arm under bridge arm IGBT pipes 4124, V phases under U phases under three-phase Bridge arm IGBT pipes 4126 under IGBT pipes 4125 and W phases, this six IGBT pipes are respectively constituted on IPM module three-phases under bridge arm and three-phase Power circuit corresponding to bridge arm, for IPM module drive load motors provide corresponding to three-phase current and voltage, further, often The power circuit that individual bridge arm corresponds to phase can also include FRD pipes (the Fast Recovery being connected in parallel on each IGBT pipes Diode, fast recovery diode), the IGBT pipes for corresponding to provide backward voltage afterflow, play a protective role.

Drive corresponding with each IGBT pipes in bridge arm IGBT pipes under bridge arm IGBT pipes on three-phase and three-phase in the present embodiment Dynamic circuit and adjustment circuit are respectively:

The UH output regulation circuit 14A being connected with bridge arm IGBT pipes 4121 in U phases, are connected with UH output regulation circuits 14A UH drive circuits 14;

The VH output regulation circuit 24A being connected with bridge arm IGBT pipes 4122 in V phases, are connected with VH output regulation circuits 24A VH drive circuits 24;

The WH output regulation circuit 34A being connected with bridge arm IGBT pipes 4123 in W phases, are connected with WH output regulation circuits 34A WH drive circuits 34;

The UL output regulation circuit 44A being connected with bridge arm IGBT pipes 4124 under U phases, are connected with UL output regulation circuits 44A UL drive circuits 44;

The WL output regulation circuit 54A being connected with bridge arm IGBT pipes 4125 under W phases, are connected with WL output regulation circuits 54A WL drive circuits 54;

The VL output regulation circuit 64A being connected with bridge arm IGBT pipes 4126 under V phases, are connected with VL output regulation circuits 64A VL drive circuits 64;

In the present embodiment, above-mentioned six drive circuits and adjustment circuit are integrated in HVIC pipes 4400, in practical application In, this six drive circuits and adjustment circuit can also be individually present, or three drive circuits and adjustment corresponding to upper bridge arm Circuit is integrated in HVIC pipes, and three drive circuits and adjustment circuit corresponding to lower bridge arm are integrated in LVIC pipes (Low Voltage Integrated Circuit, low-voltage ic chip) in, its specific set-up mode can be according to the internal structure of IPM modules Mode is different and different.

In the present embodiment, the power positive end VCC ends of HVIC pipes 4400 power as the low-pressure area of SPM 4100 Power positive end VDD, VDD are generally 15V, the low-pressure area of the power supply negative terminal GND of HVIC pipes 4400 as SPM 4100 Power supply negative terminal COM, and correspondingly the higher-pressure region power supply of phase is due to that the access with DC bus-bar voltage forms high pressure, such as DC bus-bar voltage is terminated into generally 300V or so through P;

The first input end HIN1 of HVIC pipes 4400 is as bridge arm input in the U phases of the SPM 4100 UHIN, it is connected with the input of UH drive circuits 14;

Second input HIN2 of HVIC pipes 4400 as bridge arm input VHIN in the V phases of SPM 4100, It is connected with the input of VH drive circuits 24;

3rd input HIN3 of HVIC pipes 4400 as bridge arm input WHIN in the W phases of SPM 4100, It is connected with the input of WH drive circuits 34;

4th input LIN1 of HVIC pipes 4400 as bridge arm input ULIN under the U phases of SPM 4100, It is connected with the input of UL drive circuits 44;

5th input LIN2 of HVIC pipes 4400 as bridge arm input VLIN under the V phases of SPM 4100, It is connected with the input of VL drive circuits 54;

6th input LIN3 of HVIC pipes 4400 as bridge arm input WLIN under the W phases of SPM 4100, It is connected with the input of WL drive circuits 64;

UL drive circuits 44, WL drive circuits 54, the power supply of VL drive circuits 64 are low for SPM 4100 Nip power supply, UL output regulation circuit 44A, WL output regulation circuit 54A, VL output regulation circuits 64A power input It is same;

UH drive circuits 14, VH drive circuits 24, WH drive circuits 34 have two groups of power supply inputs, and one group is intelligent work( The low-pressure area power supply of rate module 4100, another set is the higher-pressure region power supply of corresponding phase, and UH output regulation circuits 14A, VH output regulation circuit 24A, WH output regulation circuit 34A power input and the higher-pressure region of the drive circuit of corresponding connection Power supply is identical, i.e., UH drive circuits 14, UH output regulation circuits 14A power input for U phase high-voltage suppling power UVB and UVS;VH drive circuits 24, VH output regulation circuits 24A power input are V phase high-voltage suppling powers VVB and VVS;WH drives Circuit 34, WH output regulation circuits 34A power input are V phase high-voltage suppling powers WVB and WVS.

In the present embodiment, the DC bus-bar voltage input P of IPM modules 4100 connects the collection of above-mentioned six IGBT pipes respectively Electrode, its UN, VN, WN are respectively the emitter stage output end of wherein three lower bridge arm IGBT pipes, and IPM modules 4100 also include three Bootstrap capacitor 4133,4132,4131, the higher-pressure region power supply end of corresponding phase is connected in parallel on respectively.

In the course of normal operation of IPM modules 4100, the tunnel input signal of UHIN, VHIN, WHIN, ULIN, VLIN, WLIN six In identical phase upper bridge arm and lower bridge arm input signal can only to have one be high level, another is necessary for low level, i.e., There can only be a high level in UHIN, ULIN, there can only be a high level in VHIN, VLIN, WHIN, WLIN there can only be a height Level.

By taking bridge arm in U phases and lower bridge arm input signal UHIN, ULIN as an example, when UHIN input low levels, ULIN is necessary Input high level, now UHIN be input to bridge arm IGBT pipes 4121 in U phases through UH drive circuits 14 and UH output regulation circuits 14A Grid is kept it turned off, and ULIN is input to the grid of bridge arm IGBT pipes 4124 under U phases through UL drive circuits 44 and UL output regulation circuits 44A Pole turns it on, and now, the low-pressure area power supply VDD of IPM modules 4100 gives certainly through the internal bootstrap circuit of UH drive circuits 14 Lift electric capacity 4133 to charge, its charge circuit is that VDD arrives UVB bridges under through bootstrap capacitor 4133, U phases through the inside of UH drive circuits 14 Arm IGBT pipes 4124 reach low-pressure area power supply negative terminal COM, are supplied by enough long-time later stage electric capacity both ends close to voltage zone Piezoelectric voltage is 15V, i.e., now U phases high-voltage suppling power UVB and UVS voltages are close to 15V;And when UHIN input high levels, ULIN must input low level when, bridge arm IGBT pipes 4121 turn in U phases, and bridge arm IGBT pipes 4124 end under U phases, now direct current Busbar voltage reaches UVS close to 300V through bridge arm IGBT pipes 4121 on P ends and U phases, because the both ends of bootstrap capacitor 4133 have had Close to 15V voltage, therefore its UVB end is lifted to close to 315V.Thus U phase high-voltage suppling powers UVB and UVS voltage be with The difference of bridge arm and lower bridge arm input signal UHIN, ULIN in U phases and change, if the high level that bridge arm inputs in U phases When the electricity that signal is relatively short and bootstrap capacitor 4133 stores is relatively more, voltages of the UVB with respect to UVS can keep more than 14V, i.e. UH The higher-pressure region input power of output regulation circuit 14A and UH drive circuit 14 can keep more than 14V.

Similarly the higher-pressure region input power of other phases can also keep more than 14V.

In the present embodiment, each adjustment circuit is opened including voltage detection module, counting module, output module and first Close, by taking UH output regulation circuits 14A as an example, as shown in figure 4, UH output regulation circuits 14A includes voltage detection module 10, counted Module 20, output module 30 and first switch 5001.

Second selection end of the input IN connections second switch 5007 of adjustment circuit;

The power end interconnection of the input of voltage detection module 10, the power end of counting module 20 and output module 30, structure Into adjustment circuit 14A power end;The output end of voltage detection module 10 is opened with the input of counting module 20 and first respectively Close 5001 control terminal connection;The control terminal of the output end connection output module 30 of counting module 20;The input of output module 30 Hold and connect the input of first switch 5001 for adjustment circuit 14A signal input part, the output end of output module 30, first opens The signal output part that the output end for closing 5001 is adjustment circuit 14A;Wherein,

Voltage detection module 10, during for being less than predetermined threshold value in the magnitude of voltage for detecting adjustment circuit 14A inputs, control Counting module 20 processed starts timing, and controls first switch to switch to disconnect by connection during normal work;

Counting module 20, for when starting timing, output the first trigger signal control output module 30 to export low resistance state;

When timing time is not up to the goal-selling time, and magnitude of voltage is more than or equal to predetermined threshold value, output module The low resistance state of 30 outputs is released the electric charge of corresponding IGBT pipes;When timing time reaches the goal-selling time, count module Block 20 exports the second trigger signal and controls drive circuit output drive signal to manage to corresponding IGBT.

Specifically, voltage detection module 10 includes comparator 5009, voltage source 5008;

The in-phase end of comparator 5009 is connected with adjustment circuit power end positive pole, the positive pole connection comparator of voltage source 5008 5009 end of oppisite phase, the negative pole of voltage source 5008 are connected with adjustment circuit power end negative pole.

Counting module 10 includes the first NOT gate 5012 and counter 5002;

The input of first NOT gate 5012 is the input of counting module 10, the output end linkage counter of the first NOT gate 5012 5002 inputs, the output end of counter 5002 are the output end of counting module 10.

Output module 30 includes second switch the 5011, the 3rd and switchs the 5007, first PMOS 5003 and the second NMOS tube 5004;

The source electrode point of the input of second switch 5011, the first choice end of the 3rd switch 5007 and the first PMOS 5003 It is not connected with adjustment circuit 14A power end VB1 positive poles, the control of the switch 5007 of output end connection the 3rd of second switch 5011 End;

Second selection end of the 3rd switch 5007 connects the grid of the first PMOS 5003, the fixing end of the 3rd switch 5007 The grid of the second NMOS tube 5004 is connected, the drain electrode of the first PMOS 5003 and the drain electrode connection end of the second NMOS tube 5004 are defeated Go out the output end of module 30, the source electrode of the second NMOS tube 5004 is connected with adjustment circuit 14A power end negative poles VS1.

What deserves to be explained is above-mentioned first switch 5001, second switch 5011 and the 3rd switch 5007 can be opened for simulation electronic Close.

The adjustment circuit operation principle of the present embodiment is as follows:In the course of normal operation of IPM modules 4100, six tunnels input letter Number can adjusted circuit is input to the IGBT tube grids of corresponding bridge arm again after corresponding drive circuit is driven amplification, with It is controlled to carry out on off state switching, three-phase driving signal is with the normal operation of motor corresponding to final output, due to IPM Working environment residing for module 4100 is more severe, and power supply has unstable situation, therefore can cause the low pressure of IPM modules 4100 Power supply is VDD fluctuations so that VDD is less than the under-voltage protection value of IPM modules 4100 so that drive module cisco unity malfunction The drive signal of output is turned off, and then causes IPM modules 4100 to stop output suddenly, because motor is inductive load, is driven Dynamic motor internal winding meeting energy storage produces induced electromotive force, and its induced electromotive force can be transmitted to IPM modules 4100, and then cause PM Electric charge is put aside on the IGBT pipes of module 4100, the output regulation circuit being now connected with IGBT pipes starts to play to electric on IGBT pipes The effect that lotus is released, it is specific as follows:

When voltage detection module 10 detects that the magnitude of voltage of adjustment circuit input is less than predetermined voltage threshold, specifically When being that the in-phase end voltage of comparator 5009 is less than 5008 magnitude of voltage of voltage source of end of oppisite phase access, voltage detection module 10 passes through The output end output control signal of comparator 5009 is low level signal to the control terminal of first switch 5001 and counting module 20, control First switch 5001 is switched to disconnect by connection during normal work.

When first switch 5001 disconnects, the output end of output module 30 and adjustment circuit output end OUT connection disconnect, this When adjustment circuit cut off the drive circuit and export to the drive signal of corresponding IGBT pipes, that is, disconnect adjustment circuit output end OUT, Electric charge is now put aside on IGBT pipes and carries out nature electric discharge.

When the input of counting module 20 is changed into low level, the first NOT gate 5012 through counting module 20 is anti-phase to be changed into high electricity Flat, the level of this input of hour counter 5002 is changed into high level from low level so that counter 5002 starts counting up, and makes simultaneously The output of counter 5002 is changed into low level first trigger signal so that second switch 5011 disconnects, further such that the 3rd opens Close 5007 control terminal to be also connected from the second selection end and become to be connected with first choice end, now the power supply of adjustment circuit Anode is carried in the grid of the second NMOS tube 5004 of output module 30 so that the second NMOS tube 5004 turns on.

Voltage detection module 10 detects that the magnitude of voltage of adjustment circuit input rises so that magnitude of voltage is more than or equal to default During voltage threshold, specifically the in-phase end voltage of comparator 5009 is electric greater than or equal to the voltage source 5008 of end of oppisite phase access During pressure value, voltage detection module 10 is high level signal to first switch by the output end output control signal of comparator 5009 5001 control terminals and counting module 20, control first switch 5001 are switched to connect by disconnection.

When first switch 5001 is connected, two states are now divided into according to the timing of counting module 20:

If goal-selling time such as 1024us are not arrived in the timing of counter 5002 of counting module 20, this hour counter 5002 Output end, which is appointed, maintains level state, and the state of the 3rd switch 5007 is constant, because the second NMOS tube 5004 has been on State, therefore the now output of output module 30 is low resistance state, electric charge is now put aside on IGBT pipes further passes through the second NMOS tube 5004 continued release, and the speed of charge discharging resisting is faster than releasing naturally before.

If goal-selling time such as 1024us have been arrived in the timing of counter 5002 of counting module 20, counter 5002 is counted When complete the second trigger signal of output high level so that second switch 5011 connects, further such that the 3rd switch 5007 Control terminal also from be connected with first choice end become with second selection end be connected, now drive circuit export drive signal through defeated Go out module 30 and first switch 5001 is exported to corresponding IGBT and managed, that is, the input IN for realizing adjustment circuit can be normally defeated Go out to output end OUT, i.e. IPM modules 4100 and recover normal operating conditions.

The magnitude of voltage of above-mentioned adjustment circuit input puts aside electric charge when recovering after falling, on IGBT pipes and passes through output module 30 times further released were dropped between the time of recovery and the timing time of counting module 20 depending on magnitude of voltage Length relation.If magnitude of voltage is long in the time for dropping into recovery, the timing time of counting module 20 is exceeded, has then existed Putting aside electric charge progress nature electric discharge during this on IGBT pipes can release completely, therefore when voltage rises recovery, it is defeated Go out the drive signal output of module direct driving circuit output and arrive corresponding IGBT through first switch 5001 to manage, it is not necessary to again enter Pass through further the releasing of output module low resistance state.If magnitude of voltage is shorter in the time for dropping into recovery, less than count module The timing time of block 20, savings electric charge is released naturally through previous step when voltage, which rises, to be recovered, on IGBT pipes may go back not exclusively, Further releasing through output module low resistance state is also needed to, if the timing time 1024us of counting module 20, is risen in voltage The time of the timing of counting module 20 is TM during recovery.Its time TT further to release is calculated as follows:

TT=1024-TM

Its time TT ensure that electric charge is put aside on IGBT pipes further releases completely after previous step is released naturally.

The IPM modules 4100 of the embodiment of the present invention between each drive circuit internally and corresponding IGBT pipes by increasing Add an adjustment circuit, the adjustment circuit can detect the change of the low-pressure area voltage value of IPM modules 4100 in real time, and low at its Pressure power supply fluctuation cause magnitude of voltage it is too low make module stop output so that so that the energy storage of motor causes inside modules IGBT pipes savings electric charge when, can be initially switched off driving output and IGBT pipes drive signal so that IGBT pipes savings electric charge it is advanced Row is released naturally, and now the adjustment circuit starts timing, then when low-voltage power supply recovers normal, if magnitude of voltage reduces Time length to recovery exceedes the object time then the drive signal of direct controlling and driving circuit output arrives corresponding IGBT and managed, if The time that magnitude of voltage is reduced to recovery is less than the object time, then timing is to defeated in the remaining time of object time when power taking pressure is recovered Go out low resistance state further quickly to release to IGBT pipes savings electric charge.Ensure that can be quickly obtained in IGBT pipes savings electric charge Release, and can shortens the time that IPM modules 4100 are recovered in low-voltage power supply voltage pulsation, allows module relatively quickly more extensive Normal work is answered, and avoid impact of the electric power storage lotus on module simultaneously to influence its functional reliability.

Further, based on SPM first embodiment of the present invention, air conditioner SPM of the present invention In two embodiments, as shown in figure 4, each adjustment circuit also includes shaping amplification module, using UH output regulation circuits 14A as Example, UH output regulation circuits 14A also include shaping amplification module 40:

The input of shaping amplification module 40 connection adjustment circuit 14A input, the connection of the output end of shaping amplification module 40 The input of output module 30, shaping amplification module 40 for adjustment circuit input end signal be amplified with exported after shaping to The input of output module 30.

Specifically, shaping amplification module 40 includes the 3rd NOT gate 5005 and the 4th NOT gate 5006;

The input of 3rd NOT gate 5005 is the input of shaping amplification module 40, and the output end of the 3rd NOT gate 5005 connects The input of 4th NOT gate 5006, the output end of the 4th NOT gate 5006 are the output end of shaping amplification module 40.

In the course of normal operation of IPM modules 4100, the input IN of adjustment circuit input signal is through the 3rd NOT gate 5005 and the two poles of the earth of the 4th NOT gate 5006 amplification and shaping after, by the first PMOS 5003 of output module 30 and the second NMOS tube Exported after 5004 progress power drives.

Further, the size for forming the 3rd NOT gate 5005 and the metal-oxide-semiconductor in the 4th NOT gate 5006 can be different, and the 3rd is non- The metal-oxide-semiconductor size of door 5005 is smaller than the size of the 4th NOT gate 5006, because signal its signal first after the amplification of the 3rd NOT gate 5005 Intensity increases, and its device power is increased when being amplified by the 4th NOT gate 5006, therefore the design size of its internal metal-oxide-semiconductor is comparable 3rd NOT gate 5005 it is big, such as the metal-oxide-semiconductor size of the 3rd NOT gate 5005 may be designed as metal-oxide-semiconductor size in the 4th NOT gate 5006 1/2。

Further, based on SPM first embodiment of the present invention, air conditioner SPM of the present invention In three embodiments, as shown in figure 4, output module 30 also includes shaping unit 31;

The input of the output end connection shaping unit 31 of second switch 5011, the output end of shaping unit 31 are opened for the 3rd 5007 control terminal is closed, is exported after the control signal shaping that shaping unit 31 exports for second switch 5011 to the 3rd switch 5007 Control terminal.

Specifically, shaping unit 31 includes the first NOT gate 5010 and the second NOT gate 5008;

The input of first NOT gate 5010 is the input of shaping unit 21, and the output end of the first NOT gate 5010 connects second The input of NOT gate 5008, the output end of the second NOT gate 5008 are the output end of shaping unit 21.

First NOT gate 5010 and the second NOT gate 5008 export after providing the control signal shaping exported to second switch 5011 To the control terminal of the 3rd switch 5007.

The present invention also provides a kind of controller of air conditioner, and its controller of air conditioner is used to realize be responsible for air conditioner correlation Control, specifically, for transducer air conditioning, controller of air conditioner can be divided into the control of indoor set part and outdoor machine part Device, its indoor machine controller realize the driving to indoor set blower motor, the operation of wind guide strip even load, outdoor unit control realization pair Compressor, outdoor fan motor, the driving of four-way valve even load operation, wherein outdoor controller include above-mentioned IPM modules, For the driving to compressor operating, also include being used for if outdoor fan motor is DC fan, inside its outdoor controller The above-mentioned IPM modules of DC fan are driven, if agreeing to that indoor fan motor is DC fan, are also wrapped inside its indoor controller Include the above-mentioned IPM modules for driving DC fan.Its IPM modules specific embodiment and effect refer to above-mentioned implementation Example, will not be repeated here.

In the description of this specification, the description meaning of reference term " first embodiment ", " second embodiment ", " example " etc. Refer to reference to specific method, device or the feature that the embodiment or example describe be contained in the present invention at least one embodiment or In example.In this manual, identical embodiment or example are necessarily directed to the schematic representation of above-mentioned term.And And specific features, method, apparatus or the feature of description can be in any one or more embodiments or example with suitable side Formula combines.In addition, in the case of not conflicting, those skilled in the art can be real by the difference described in this specification Apply example or example and the feature of different embodiments or example is combined and combined.

The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (11)

  1. A kind of 1. SPM, it is characterised in that managed including bridge arm IGBT under bridge arm IGBT pipes on three-phase and three-phase, and Corresponding with each IGBT pipe in bridge arm IGBT pipes under bridge arm IGBT pipes on the three-phase and three-phase drive circuit and adjustment electricity Road;
    Each described drive circuit output end connects the signal input part of the adjustment circuit corresponding to each, each institute State the grid of each IGBT corresponding to the signal output part connection of adjustment circuit;
    The positive pole of the power end of adjustment circuit corresponding to each IGBT pipe and negative pole are distinguished in bridge arm IGBT pipes on the three-phase The higher-pressure region power supply positive pole and negative pole of the corresponding phase of connection;Under the three-phase in bridge arm IGBT pipes corresponding to each IGBT pipe The positive pole and negative pole of the power end of adjustment circuit connect the positive pole of the SPM low-pressure area power supply and born respectively Pole;Wherein,
    The adjustment circuit is used for the magnitude of voltage for detecting its power end, described when the magnitude of voltage is less than predetermined voltage threshold Adjustment circuit cuts off the drive circuit and exports to the drive signal of corresponding IGBT pipes and start timing, when timing time is not up to The goal-selling time, and when the magnitude of voltage is more than or equal to the predetermined voltage threshold, the adjustment circuit will be corresponding The electric charge of IGBT pipes is released;When timing time reaches the goal-selling time, the drive circuit output is controlled to drive Dynamic signal is managed to corresponding IGBT.
  2. 2. SPM as claimed in claim 1, it is characterised in that each adjustment circuit includes voltage detecting mould Block, counting module, output module and first switch;
    The power end interconnection of the input of the voltage detection module, the power end of the counting module and the output module, Form the power end of the adjustment circuit;The output end of the voltage detection module respectively with the input of the counting module and The control terminal connection of the first switch;The output end of the counting module connects the control terminal of the output module;It is described defeated The input for going out module is the signal input part of the adjustment circuit, and the output end of the output module connects the first switch Input, the output end of the first switch is the signal output part of the adjustment circuit;Wherein,
    The voltage detection module, for being less than predetermined voltage threshold in the magnitude of voltage for detecting the adjustment circuit input When, control the counting module to start timing, and control the first switch to switch to disconnect by connection during normal work;
    The counting module, for when starting timing, output the first trigger signal control output module to export low resistance state;
    When timing time is not up to the goal-selling time, and the magnitude of voltage is more than or equal to the predetermined voltage threshold, The low resistance state of the output module output is released the electric charge of corresponding IGBT pipes;When timing time reaches the goal-selling During the time, the counting module exports the second trigger signal and controls the drive circuit output drive signal to corresponding IGBT Pipe.
  3. 3. SPM as claimed in claim 2, it is characterised in that the counting module includes the first NOT gate and counting Device;
    The input of first NOT gate is the counting module input, and the output end of first NOT gate connects the counting Device input, the counter output are the counting module output end.
  4. 4. SPM as claimed in claim 2, it is characterised in that the voltage detection module includes comparator, electricity Potential source;
    The in-phase end of the comparator is connected with the adjustment circuit power end positive pole, and the positive pole of the voltage source connects the ratio Compared with the end of oppisite phase of device, the negative pole of the voltage source is connected with the adjustment circuit power end negative pole.
  5. 5. SPM as claimed in claim 2, it is characterised in that the output module includes second switch, the 3rd Switch, the first PMOS and the second NMOS tube;
    The input of the second switch, it is described 3rd switch first choice end and first PMOS source electrode respectively with The adjustment circuit power end positive pole connection, the control terminal of output end connection the 3rd switch of the second switch;
    Second selection end of the 3rd switch connects the grid of first PMOS, the fixing end connection of the 3rd switch The grid of second NMOS tube, the drain electrode of first PMOS and the drain electrode connection end of second NMOS tube are described defeated Go out module output end, the second NMOS tube source electrode is connected with the adjustment circuit power end negative pole.
  6. 6. SPM as claimed in claim 5, it is characterised in that the output module also includes shaping unit;
    The output end of the second switch connects the input of the shaping unit, and the output end of the shaping unit is described the The control terminal of three switches, the shaping unit are opened for output after the control signal shaping of second switch output to the described 3rd The control terminal of pass.
  7. 7. SPM as claimed in claim 6, it is characterised in that the shaping unit includes the first NOT gate and second NOT gate;
    The input of first NOT gate is the input of the shaping unit, the output end connection described the of first NOT gate The input of two NOT gates, the output end of second NOT gate are the output end of the shaping unit.
  8. 8. SPM as claimed in claim 2, it is characterised in that each described adjustment circuit is also put including shaping Big module:
    The shaping amplification module input connects the input of the adjustment circuit, the shaping amplification module output end connection The input of the output module, the shaping amplification module is amplified for the input end signal of the adjustment circuit and shaping Export afterwards to the input of the output module.
  9. 9. SPM as claimed in claim 8, it is characterised in that the shaping amplification module include the 3rd NOT gate and 4th NOT gate;
    The input of 3rd NOT gate is the input of the shaping amplification module, and the output end of the 3rd NOT gate connects institute The input of the 4th NOT gate is stated, the output end of the 4th NOT gate is the output end of shaping amplification module.
  10. 10. SPM as claimed in claim 9, it is characterised in that the metal-oxide-semiconductor size in the 3rd NOT gate is institute State 1/2 of metal-oxide-semiconductor size in the 4th NOT gate.
  11. 11. a kind of controller of air conditioner, the controller of air conditioner includes the intelligent power as described in claim 1 to 10 is any Module.
CN201710816079.9A 2017-09-11 2017-09-11 Intelligent power module and controller of air conditioner CN107492876B (en)

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CN201710816079.9A CN107492876B (en) 2017-09-11 2017-09-11 Intelligent power module and controller of air conditioner
PCT/CN2018/076068 WO2019047474A1 (en) 2017-09-11 2018-02-09 Intelligent power module and air-conditioner controller
US16/813,945 US20200212836A1 (en) 2017-09-11 2020-03-10 Intelligent power module and controller for air conditioner

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108281940A (en) * 2018-01-18 2018-07-13 广东美的制冷设备有限公司 Intelligent power module and air conditioner
WO2019047474A1 (en) * 2017-09-11 2019-03-14 广东美的制冷设备有限公司 Intelligent power module and air-conditioner controller

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Publication number Priority date Publication date Assignee Title
JP3780898B2 (en) * 2001-10-16 2006-05-31 富士電機デバイステクノロジー株式会社 Power device drive circuit
CN203480359U (en) * 2013-08-22 2014-03-12 广东美的制冷设备有限公司 Intelligent power module
CN103683917A (en) * 2012-08-28 2014-03-26 株式会社电装 Driver for switching element and control system for rotary machine using the same
CN206422700U (en) * 2017-02-04 2017-08-18 浙江日风电气股份有限公司 A kind of wind cooling power unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3780898B2 (en) * 2001-10-16 2006-05-31 富士電機デバイステクノロジー株式会社 Power device drive circuit
CN103683917A (en) * 2012-08-28 2014-03-26 株式会社电装 Driver for switching element and control system for rotary machine using the same
CN203480359U (en) * 2013-08-22 2014-03-12 广东美的制冷设备有限公司 Intelligent power module
CN206422700U (en) * 2017-02-04 2017-08-18 浙江日风电气股份有限公司 A kind of wind cooling power unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019047474A1 (en) * 2017-09-11 2019-03-14 广东美的制冷设备有限公司 Intelligent power module and air-conditioner controller
CN108281940A (en) * 2018-01-18 2018-07-13 广东美的制冷设备有限公司 Intelligent power module and air conditioner

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