CN205792230U - SPM and air-conditioner - Google Patents

SPM and air-conditioner Download PDF

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Publication number
CN205792230U
CN205792230U CN201620513571.XU CN201620513571U CN205792230U CN 205792230 U CN205792230 U CN 205792230U CN 201620513571 U CN201620513571 U CN 201620513571U CN 205792230 U CN205792230 U CN 205792230U
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CN
China
Prior art keywords
input
circuit
phase
pipe
pfc
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CN201620513571.XU
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Chinese (zh)
Inventor
冯宇翔
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广东美的制冷设备有限公司
美的集团股份有限公司
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Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Priority to CN201620513571.XU priority Critical patent/CN205792230U/en
Priority claimed from PCT/CN2016/097737 external-priority patent/WO2017206385A1/en
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Publication of CN205792230U publication Critical patent/CN205792230U/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

This utility model provides a kind of SPM and air-conditioner, and the first outfan of the adaptive circuit in SPM is as the Enable Pin of HVIC pipe;First input/output terminal of PFC on-off circuit, the second input/output terminal, the 3rd input/output terminal and the 4th input/output terminal are connected respectively the signal output part to PFC drive circuit, PFC low reference voltage end, PFC end and the second outfan of adaptive circuit;The level signal that PFC on-off circuit inputs according to its 4th input/output terminal, it is achieved there is the function of the power switch pipe of the first switching speed and the first saturation voltage drop, or realize the function with the power switch pipe of second switch speed and the second saturation voltage drop;Adaptive circuit, according to the size of the input signal of its input, is exported the enable signal of corresponding level, and controls, by the output of its second outfan, the level signal that PFC on-off circuit realizes the power switch pipe of corresponding function by its first outfan.

Description

SPM and air-conditioner

Technical field

This utility model relates to SPM technical field, in particular to a kind of intelligence merit Rate module and a kind of air-conditioner.

Background technology

SPM (Intelligent Power Module is called for short IPM) is a kind of by electric power The analog line driver that electronic discrete device and integrated circuit technique integrate, SPM bag Containing device for power switching and high-voltage driving circuit, and with overvoltage, overcurrent and the fault such as overheated inspection Slowdown monitoring circuit.The logic input terminal of SPM receives the control signal of master controller, and outfan drives Dynamic compressor or subsequent conditioning circuit work, send the system status signal detected back to master controller simultaneously. Relative to traditional discrete scheme, SPM has high integration, high reliability, self-inspection and guarantor The advantages such as protection circuit, are particularly suitable for driving the converter of motor and various inverter, are that frequency conversion is adjusted Speed, metallurgical machinery, electric propulsion, servo-drive, the desired power level electronic device of frequency-conversion domestic electric appliances.

The structure of existing Intelligent power module circuit is as it is shown in figure 1, MTRIP port is as electric current Test side, to protect SPM 100 according to the size of current detected.PFCIN Port is as the PFC (Power Factor Correction, PFC) of SPM Control input.

In SPM work process, PFCINP end presses certain frequency between low and high level Frequently switching, makes IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar crystal Pipe) pipe 127 is continuously on off state and FRD pipe 131 is continuously in freewheeling state, this frequency Generally LIN1~LIN3,2~4 times of HIN1~HIN3 switching frequency, and with LIN1~LIN3, the switching frequency of HIN1~HIN3 the most directly contact.

As in figure 2 it is shown, UN, VN, WN connect one end of milliohm resistance 138, milliohm resistance 138 Another termination GND, MTRIP be current detecting pin, connect one end of milliohm resistance 138, logical Cross the pressure drop measuring and calculating electric current of detection milliohm resistance, as it is shown on figure 3, when current is excessive, make intelligence merit Rate module 100 quits work, it is to avoid after miscarriage life is overheated excessively, produce SPM 100 Permanent damage.

-VP, COM, UN, VN, WN have electrical connection in actual use.Therefore, Voltage noise when IGBT pipe 121~IGBT pipe 127 switchs and FRD (Fast Recovery Diode, fast recovery diode) pipe 111~FRD pipe 116, FRD pipe 131 afterflow time electric current make an uproar Sound all can intercouple, and impacts the input pin of each low-voltage area.

In each input pin, HIN1~HIN3, LIN1~LIN3, the threshold value of PFCINP typically exist About 2.3V, and the threshold voltage of ITRIP typically only has below 0.5V, therefore, ITRIP is It is easily subject to the pin of interference.When ITRIP is toggled, SPM 100 will stop work Make, and because the most really there is stream, so the triggering that ITRIP is now belongs to false triggering. As shown in Figure 4, it is high level at PFCIN, when moment opened by IGBT pipe 127, because FRD The existence of the reverse recovery current of pipe 131, superposition goes out I131Current waveform, this electric current has bigger Concussion noise, passes through-VP, COM, UN, VN, WN electrical connection in peripheral circuit, shake Swing noise to close out certain voltage and raise by Rhizoma Nelumbinis at MTRIP end.If making the condition that MTRIP triggers For: voltage > Vth, and the persistent period > Tth;In the diagram, if Ta < Tth < Tb, then at first three The highest deficiency of voltage in cycle is so that MTRIP produces false triggering, and to the 4th cycle, MTRIP will Produce false triggering.

It is true that because reverse recovery time of FRD pipe and reverse recovery current and IGBT pipe Conducting velocity correlation, when the conducting speed more snapback of IGBT pipe is the longest for recovery time, therefore exists The occasion that IGBT switching speed requirements is the highest, the probability that MTRIP is triggered is increasing.Such as Fig. 5 Shown in, when slope tf when opening of IGBT is less, the electricity that the Reverse recovery effect of FRD causes Pressure fluctuation is not enough to cause MTRIP to trigger, and when slope tf when opening of IGBT is bigger, MTRIP is triggered, and makes system stalls.Switching speed at IGBT triggers machine with MTRIP In the case of non-correlation processed, although this false triggering can recover over time without to system Formed and destroy, but user can be caused puzzlement undoubtedly.Such as the application scenario for transducer air conditioning, use Family is pursued energy-conservation and is wished PFC continuous firing, but if MTRIP is become to double by the chance of false triggering Add, then, when MTRIP is by false triggering, air conditioning system can quit work because being mistakenly considered to occur to flow 3~5 minutes, making user during this period of time cannot obtain cold wind, this is to cause air conditioning system because of refrigeration Scarce capacity is by the one of the main reasons of customer complaint.Meanwhile, consider not in the wiring of some application circuit The occasion in week, if the SPM of current art will not be automatically adjusted the work shape of pfc circuit State, improves the use threshold of SPM undoubtedly, have impact on the universal of SPM.

Utility model content

This utility model be intended at least to solve present in prior art or correlation technique technical problem it One.

To this end, a purpose of the present utility model is to propose a kind of new SPM, can With on the premise of realizing overcurrent protection, regulated by the wiring environment judging application circuit voluntarily The duty of pfc circuit, to improve SPM stability operationally.

Another purpose of the present utility model is to propose a kind of air-conditioning with this SPM Device.

For achieving the above object, according to the embodiment of first aspect of the present utility model, it is proposed that a kind of SPM, including:

Brachium pontis signal input part, three-phase low reference voltage under brachium pontis signal input part, three-phase on three-phase End, current detecting end, PFC end and PFC low reference voltage end;HVIC(High Voltage Integrated Circuit, high voltage integrated circuit) pipe, described HVIC pipe is provided with and is respectively connecting to The terminals of brachium pontis signal input part under brachium pontis signal input part and described three-phase on described three-phase, and It is connected to the first port of described current detecting end, described HVIC pipe is additionally provided with PFC and drives electricity The signal output part on road;Adaptive circuit, the input of described adaptive circuit is connected to described first Port, the first outfan of described adaptive circuit is as the Enable Pin of described HVIC pipe;PFC opens Close circuit, the first input/output terminal of described PFC on-off circuit, the second input/output terminal, the 3rd Input/output terminal and the 4th input/output terminal are connected respectively the signal to described PFC drive circuit Outfan, described PFC low reference voltage end, described PFC end and the second of described adaptive circuit Outfan;Wherein, the level letter that described PFC on-off circuit inputs according to its 4th input/output terminal Number, it is achieved there is the function of the power switch pipe of the first switching speed and the first saturation voltage drop, or realize There is the function of the power switch pipe of second switch speed and the second saturation voltage drop, described first switch speed Degree is more than described second saturation voltage drop more than described second switch speed, described first saturation voltage drop;Institute State the adaptive circuit size according to the input signal of its input, export phase by its first outfan Answer the enable signal of level, and it is real to control described PFC on-off circuit by the output of its second outfan The level signal of the power switch pipe of existing corresponding function.

According to the SPM of embodiment of the present utility model, adaptive circuit is by defeated according to it Enter the size of input signal of end (the i.e. first port, namely current detecting end), first defeated by it Go out end and export the enable signal of corresponding level, it is ensured that SPM realizes overcurrent protection;With Time, adaptive circuit is by the size of the input signal according to its input, defeated by its second outfan Go out to control the level signal that PFC on-off circuit realizes the power switch pipe of corresponding function so that adaptive Answer circuit can determine the wiring environment of application circuit according to the input signal of its input, control PFC On-off circuit realizes the function of the power switch pipe that switching speed is very fast and saturation voltage drop is higher or realization is opened Close the speed function compared with slow and that saturation voltage drop is relatively low power switch pipe, with by adjusting pfc circuit In the switching speed of power switch pipe (being realized by PFC on-off circuit) and saturation voltage drop drop Voltage noise in low circuit, it is ensured that SPM stability operationally.

SPM according to above-described embodiment of the present utility model, it is also possible to there is techniques below Feature:

According to an embodiment of the present utility model, described adaptive circuit is believed in the input of its input Number value less than the first setting value time, exported the enable signal of the first level by its first outfan, To allow the work of described HVIC pipe, and exported the letter of described first level by its second outfan Number;Described adaptive circuit sets more than or equal to described first in the value of the input signal of its input When being worth and be less than the second setting value, the enable being exported described first level by its first outfan is believed Number, and by the signal of its second outfan output second electrical level;Described adaptive circuit inputs at it When the value of the input signal of end is more than or equal to described second setting value, exported by its first outfan The enable signal of described second electrical level, to forbid that described HVIC pipe works, and second is exported by it End exports the signal of described second electrical level.

According to the SPM of embodiment of the present utility model, when the input of adaptive circuit When the value of input signal is less than the first setting value, the electric current in the application circuit of SPM is described Value was in normal range, therefore can be exported the signal of the first level by the first outfan, to permit Permitted the work of HVIC pipe;Exported the signal of the first level by the second outfan, so that PFC opens simultaneously Close the function of the power switch pipe that circuit realiration switching speed is very fast and saturation voltage drop is higher, to ensure system System has higher efficiency.

When the value of the input signal of the input of adaptive circuit more than or equal to the first setting value and is less than During the second setting value, illustrate that the current value in the application circuit of SPM is relatively big, but still in Need not trigger in the range of overcurrent protection, therefore can be exported the letter of the first level by the first outfan Number, to ensure that HVIC pipe works on;Simultaneously by the letter of the second outfan output second electrical level Number, make PFC on-off circuit realize switching speed compared with slow and that saturation voltage drop is relatively low power switch pipe Function, and then voltage noise can be reduced SPM is carried out the interference of overcurrent protection, improve The stability of SPM.

When the value of the input signal of the input of adaptive circuit is more than or equal to the second setting value, say Current value in the application circuit of bright SPM has reached to trigger the scope of overcurrent protection, therefore Can be by the enable signal of the first outfan output second electrical level, to forbid that HVIC pipe works, really Protect the safety of SPM.

According to an embodiment of the present utility model, described adaptive circuit includes:

First voltage comparator, the positive input terminal of described first voltage comparator is as described self adaptation electricity The input on road, the negative input end of described first voltage comparator is connected to the positive pole of the first voltage source, The negative pole of described first voltage source is connected to the power supply negative pole of described adaptive circuit, and described first The outfan of voltage comparator is connected to first input end and the input of the first not gate of NAND gate, institute The outfan stating the first not gate is connected to the input of the second not gate, and the outfan of described second not gate is made The second outfan for described adaptive circuit;Second voltage comparator, described second voltage comparator Positive input terminal be connected to the positive input terminal of described first voltage comparator, described second voltage comparator Negative input end be connected to the positive pole of the second voltage source, the negative pole of described second voltage source is connected to described The power supply negative pole of adaptive circuit, the outfan of described second voltage comparator be connected to described with Second input of not gate, the outfan of described NAND gate is connected to the input of the 3rd not gate, described The outfan of the 3rd not gate is as the first outfan of described adaptive circuit;Wherein, described self adaptation The power supply positive pole of circuit and negative pole are connected respectively the low-pressure area confession to described SPM Electricity power positive end and negative terminal.

According to an embodiment of the present utility model, described PFC on-off circuit is defeated in its 4th input When going out the signal of end input the first level, it is achieved there is described first switching speed and described first saturated The function of the power switch pipe of pressure drop;Described PFC on-off circuit inputs at its 4th input/output terminal During the signal of second electrical level, it is achieved there is described second switch speed and the merit of described second saturation voltage drop The function of rate switching tube.

According to an embodiment of the present utility model, described PFC on-off circuit includes:

First analog switch, the fixing end of described first analog switch is as described PFC on-off circuit The 3rd input/output terminal, described first analog switch first selection end be connected to the first power switch The colelctor electrode of pipe, the second selection end of described first analog switch is connected to the collection of the second power switch pipe Electrode;Second analog switch, the fixing end of described second analog switch is as described PFC switch electricity Second input/output terminal on road, the first selection end of described second analog switch is connected to described first merit The emitter stage of rate switching tube, the second selection end of described second analog switch is connected to described second power The emitter stage of switching tube;Wherein, the control end of described second analog switch and described first analog switch Control end be connected, and as the 4th input/output terminal of described PFC on-off circuit;Described first The grid of power switch pipe is connected with the grid of described second power switch pipe, and as described PFC First input/output terminal of on-off circuit.

Wherein, the first power switch pipe and the second power switch pipe can be IGBT.

According to an embodiment of the present utility model, also include: boostrap circuit, described boostrap circuit bag Including: the first bootstrap diode, the anode of described first bootstrap diode is connected to described intelligent power mould The low-pressure area power supply anode of block, the negative electrode of described first bootstrap diode is connected to described intelligence merit The U phase higher-pressure region power supply anode of rate module;Second bootstrap diode, described second bootstrapping two poles The anode of pipe is connected to the low-pressure area power supply anode of described SPM, described second bootstrapping The negative electrode of diode is connected to the V phase higher-pressure region power supply anode of described SPM;3rd Bootstrap diode, the anode of described 3rd bootstrap diode is connected to the low pressure of described SPM District's power supply anode, the negative electrode of described 3rd bootstrap diode is connected to described SPM W phase higher-pressure region power supply anode.

According to an embodiment of the present utility model, also include: bridge arm circuit on three-phase, described three-phase In each phase in upper bridge arm circuit, the input of bridge arm circuit is connected to the three-phase height of described HVIC pipe The signal output part of corresponding phase in nip;Bridge arm circuit under three-phase, under described three-phase in bridge arm circuit Corresponding phase during the input of bridge arm circuit is connected to the three-phase low-voltage district of described HVIC pipe under each phase Signal output part.

Wherein, on three-phase, bridge arm circuit includes: bridge arm circuit, W in bridge arm circuit, V phase in U phase Go up bridge arm circuit mutually;Under three-phase, bridge arm circuit includes: the lower brachium pontis electricity of the lower bridge arm circuit of U phase, V phase Road, the lower bridge arm circuit of W phase.

According to an embodiment of the present utility model, in described each phase, bridge arm circuit includes: the 3rd merit Rate switching tube and the first diode, the anode of described first diode is connected to described 3rd power switch The emitter stage of pipe, the negative electrode of described first diode is connected to the current collection of described 3rd power switch pipe Pole, the colelctor electrode of described 3rd power switch pipe is connected to the high voltage input of described SPM End, the base stage of described 3rd power switch pipe is as the input of bridge arm circuit in described each phase, institute State the emitter stage of the 3rd power switch pipe to be connected to the higher-pressure region of described SPM correspondence phase and power Power supply negative terminal.Wherein, the 3rd power switch pipe can be IGBT.

According to an embodiment of the present utility model, under described each phase, bridge arm circuit includes: the 4th merit Rate switching tube and the second diode, the anode of described second diode is connected to described 4th power switch The emitter stage of pipe, the negative electrode of described second diode is connected to the current collection of described 4th power switch pipe Pole, the colelctor electrode of described 4th power switch pipe is connected to described first in the upper bridge arm circuit of correspondence The anode of diode, the base stage of described 4th power switch pipe is as bridge arm circuit under described each phase Input, the emitter stage of described 4th power switch pipe is as the corresponding phase of described SPM Low reference voltage end.Wherein, the 4th power switch pipe can be IGBT.

According to an embodiment of the present utility model, the high voltage input of described SPM Voltage is 300V.

According to an embodiment of the present utility model, each phase higher-pressure region of described SPM supplies Connect between anode and the negative terminal of electricity power supply and have filter capacitor.

Embodiment according to this utility model second aspect, it is also proposed that a kind of air-conditioner, including: as SPM described in any of the above-described embodiment.

Additional aspect of the present utility model and advantage will part be given in the following description, and part will be from Explained below becomes obvious, or recognized by practice of the present utility model.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present utility model and advantage are from combining accompanying drawings below to embodiment Description in will be apparent from easy to understand, wherein:

Fig. 1 shows the structural representation of the SPM in correlation technique;

Fig. 2 shows the external circuit schematic diagram of SPM;

Fig. 3 shows that current signal triggers the out-of-work waveform diagram of SPM;

Fig. 4 shows a kind of waveform signal of the noise of the SPM generation in correlation technique Figure;

Fig. 5 shows the another kind of waveform signal of the noise of the SPM generation in correlation technique Figure;

Fig. 6 shows the structural representation of the SPM according to embodiment of the present utility model;

Fig. 7 shows the internal structure signal of the adaptive circuit according to embodiment of the present utility model Figure;

Fig. 8 shows that the internal structure of the PFC on-off circuit according to embodiment of the present utility model is shown It is intended to.

Detailed description of the invention

In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, knot below Close the drawings and specific embodiments this utility model is further described in detail.Need explanation It is that, in the case of not conflicting, the feature in embodiments herein and embodiment can mutual group Close.

Elaborate a lot of detail in the following description so that fully understanding this utility model, but It is that this utility model can be implemented to use other to be different from other modes described here, because of This, protection domain of the present utility model is not limited by following public specific embodiment.

Fig. 6 shows the structural representation of the SPM according to embodiment of the present utility model.

As shown in Figure 6, according to the SPM of embodiment of the present utility model, including: HVIC pipe 1101 and adaptive circuit 1105.

The VCC end of HVIC pipe 1101 as SPM 1100 low-pressure area power supply just End VDD, VDD are generally 15V;

Inside HVIC pipe 1101:

ITRIP end connects the input of adaptive circuit 1105;VCC end connects adaptive circuit The power supply anode of 1105;GND end connects the power supply negative terminal of adaptive circuit 1105;From First outfan of adaptive circuit 1105 is designated as ICON, be used for controlling HIN1~HIN3, LIN1~LIN3, the effectiveness of PFCINP signal;Second outfan of adaptive circuit 1105 connects PFCC end to HVIC pipe 1101.

HVIC pipe 1101 is internal also has boostrap circuit structure as follows:

VCC end and bootstrap diode 1102, bootstrap diode 1103, bootstrap diode 1104 Anode is connected;The negative electrode of bootstrap diode 1102 is connected with the VB1 of HVIC pipe 1101;Bootstrapping The negative electrode of diode 1103 is connected with the VB2 of HVIC pipe 1101;The moon of bootstrap diode 1104 Pole is connected with the VB3 of HVIC pipe 1101.

In the U phase that HIN1 end is SPM 1100 of HVIC pipe 1101, brachium pontis signal is defeated Enter to hold UHIN;Bridge in the V phase that HIN2 end is SPM 1100 of HVIC pipe 1101 Arm signal input part VHIN;The HIN3 end of HVIC pipe 1101 is SPM 1100 Brachium pontis signal input part WHIN in W phase;The LIN1 end of HVIC pipe 1101 is SPM The lower brachium pontis signal input part ULIN of the U phase of 1100;The LIN2 end of HVIC pipe 1101 is intelligence merit The lower brachium pontis signal input part VLIN of the V phase of rate module 1100;The LIN3 end of HVIC pipe 1101 is The lower brachium pontis signal input part WLIN of the W phase of SPM 1100;HVIC pipe 1101 ITRIP end is the MTRIP end of SPM 1100;The PFCINP end of HVIC pipe 1101 PFC as SPM 100 controls input PFCIN;The GND of HVIC pipe 1101 Hold the low-pressure area power supply negative terminal COM as SPM 1100.Wherein, intelligent power Module 1100 UHIN, VHIN, WHIN, ULIN, VLIN, WLIN six tunnel input and PFCIN end receives the input signal of 0V or 5V.

The VB1 end of HVIC pipe 1101 connects one end of electric capacity 1131, and as SPM The U phase higher-pressure region power supply anode UVB of 1100;The HO1 end of HVIC pipe 1101 and U phase The grid of upper brachium pontis IGBT pipe 1121 is connected;The VS1 end of HVIC pipe 1101 is managed with IGBT The colelctor electrode of the lower brachium pontis IGBT pipe 1124 of the emitter-base bandgap grading of 1121, the anode of FRD pipe 1111, U phase, The negative electrode of FRD pipe 1114, the other end of electric capacity 1131 are connected, and as SPM The U phase higher-pressure region power supply negative terminal UVS of 1100.

The VB2 end of HVIC pipe 1101 connects one end of electric capacity 1132, and as SPM The V phase higher-pressure region power supply anode VVB of 1100;The HO2 end of HVIC pipe 1101 and V phase The grid of upper brachium pontis IGBT pipe 1123 is connected;The VS2 end of HVIC pipe 1101 is managed with IGBT The colelctor electrode of the lower brachium pontis IGBT pipe 1125 of the emitter-base bandgap grading of 1122, the anode of FRD pipe 1112, V phase, The negative electrode of FRD pipe 1115, the other end of electric capacity 1132 are connected, and as SPM The V phase higher-pressure region power supply negative terminal VVS of 1100.

The VB3 end of HVIC pipe 1101 connects one end of electric capacity 1133, as SPM The W phase higher-pressure region power supply anode WVB of 1100;The HO3 end of HVIC pipe 1101 and W The grid going up brachium pontis IGBT pipe 1123 mutually is connected;The VS3 end of HVIC pipe 1101 is managed with IGBT The current collection of the lower brachium pontis IGBT pipe 1126 of the emitter-base bandgap grading of 1123, the anode of FRD pipe 1113, W phase Pole, the negative electrode of FRD pipe 1116, the other end of electric capacity 1133 are connected, and as SPM The W phase higher-pressure region power supply negative terminal WVS of 1100.

The LO1 end of HVIC pipe 1101 is connected with the grid of IGBT pipe 1124;HVIC pipe 1101 LO2 end be connected with the grid of IGBT pipe 1125;The LO3 end of HVIC pipe 1101 and IGBT The grid of pipe 1126 is connected;The emitter-base bandgap grading of IGBT pipe 1124 is connected with the anode of FRD pipe 1114, And as the U phase low reference voltage end UN of SPM 1100;Penetrating of IGBT pipe 1125 Pole is connected with the anode of FRD pipe 1115, and as the V phase low-voltage of SPM 1100 Reference edge VN;The emitter-base bandgap grading of IGBT pipe 1126 is connected with the anode of FRD pipe 1116, and as intelligence The W phase low reference voltage end WN of energy power model 1100.

VDD is HVIC pipe 1101 power supply anode, and GND is the power supply of HVIC pipe 1101 Power supply negative terminal;VDD-GND voltage is generally 15V;VB1 and VS1 is respectively U phase higher-pressure region The positive pole of power supply and negative pole, HO1 is the outfan of U phase higher-pressure region;VB2 and VS2 is respectively The positive pole of the power supply of V phase higher-pressure region and negative pole, HO2 is the outfan of V phase higher-pressure region;VB3 and VS3 is respectively positive pole and the negative pole of the power supply of U phase higher-pressure region, and HO3 is the output of W phase higher-pressure region End;LO1, LO2, LO3 are respectively U phase, V phase, the outfan of W phase low-pressure area.

The PFCO end of HVIC pipe 1101 is PFC drive circuit outfan, with PFC on-off circuit First input/output terminal of 1127 is connected;Second input/output terminal of PFC on-off circuit 1127 with The anode of FRD pipe 1117 is connected, and as the PFC low reference voltage of SPM 1100 End-VP;3rd input/output terminal of PFC on-off circuit 1127 and the negative electrode of FRD pipe 1117, The anode of FRD pipe 1141 is connected, and as the PFC end of SPM 1100, HVIC manages The PFCC end of 1101 connects the 4th input/output terminal of PFC on-off circuit 1127.PFC switchs electricity The power supply anode on road 1127 is connected with VCC, and the power supply of PFC on-off circuit 1127 is born End is connected with COM.

The negative electrode of FRD pipe 1141, the colelctor electrode of IGBT pipe 1121, the moon of FRD pipe 1111 Pole, the colelctor electrode of IGBT pipe 1122, the negative electrode of FRD pipe 1112, the current collection of IGBT pipe 1123 Pole, the negative electrode of FRD pipe 1113 are connected, and as the high voltage input of SPM 1100 P, P typically meet 300V.

The effect of HVIC pipe 1101 is:

When ICON is low level, by the 0 or 5V of input HIN1, HIN2, HIN3 patrol Collect input signal and pass to outfan HO1, HO2, HO3 respectively, by LIN1, LIN2, LIN3 Signal passes to outfan LO1, LO2, LO3 respectively, and the signal of PFCINP is passed to outfan PFCO, wherein HO1 be the logic output signal of VS1 or VS1+15V, HO2 be VS2 or The logic output signal of VS2+15V, HO3 are the logic output signals of VS3 or VS3+15V, LO1, LO2, LO3, PFCO are the logic output signals of 0 or 15V.I.e. export at ICON During low level, HVIC pipe 1101 enables.

When ICON is high level, HO1, HO2, HO3, LO1, LO2, LO3, PFCO All it is set to low level.I.e. when ICON exports high level, HVIC pipe 1101 quits work.

The effect of adaptive circuit 1105 is:

When real time value ITRIP being detected is less than a certain magnitude of voltage V1, ICON exports low electricity Flat, and the second outfan output low level of adaptive circuit 1105;When detecting ITRIP's When real time value is less than a certain magnitude of voltage V2 more than or equal to V1, ICON output low level, and And the second outfan output high level of adaptive circuit 1105;When real-time number ITRIP being detected When value is more than or equal to V2, ICON exports high level, and adaptive circuit 1105 is second defeated Go out end output high level;Wherein, V2 > V1.

The effect of PFC on-off circuit 1127 is:

When PFCC is low level, PFC on-off circuit 1127 the first input/output terminal, second Input/output terminal, the 3rd input/output terminal show as one and open speed and saturation voltage drop is bigger IGBT manages;When PFCC is high level, PFC on-off circuit 1127 the first input/output terminal, Second input/output terminal, the 3rd input/output terminal show as one open that speed is relatively slow and saturation voltage drop relatively Little IGBT pipe.

In an embodiment of the present utility model, the particular circuit configurations of adaptive circuit 1105 is such as Shown in Fig. 7, particularly as follows:

ITRIP connects the positive input terminal of voltage comparator 2010, the positive input of voltage comparator 2014 End;The anode of the negative input termination voltage source 2018 of voltage comparator 2010;Voltage source 2018 Negative terminal meets GND;The anode of the negative input termination voltage source 2019 of voltage comparator 2014;Voltage The negative terminal in source 2019 meets GND;The output termination NAND gate 2011 of voltage comparator 2010 is wherein One input and the input of not gate 2012;The output of not gate 2012 terminates the defeated of not gate 2013 Enter end;The outfan of not gate 2013 is the second outfan of adaptive circuit 1105.

Another input of the output termination NAND gate 2011 of voltage comparator 2014;NAND gate The input of the output termination not gate 2016 of 2011;The outfan of not gate 2016 is self adaptation electricity The ICON end on road 1105.

In an embodiment of the present utility model, the particular circuit configurations of PFC on-off circuit 1127 As shown in Figure 8, particularly as follows:

PFC on-off circuit 1127 the 4th input/output terminal connect analog switch 2003 control end and The control end of analog switch 2004;The fixing end of analog switch 2003 is PFC on-off circuit 3rd input/output terminal of 1127;The fixing end of analog switch 2004 is PFC on-off circuit Second input/output terminal of 1127;The collection of 1 selection termination IGBT pipe 2001 of analog switch 2003 Electrode;The colelctor electrode of 0 selection termination IGBT pipe 2002 of analog switch 2003;Analog switch The emitter-base bandgap grading of the 1 selection termination IGBT pipe 2001 of 2004;0 selection termination of analog switch 2004 The emitter-base bandgap grading of IGBT pipe 2002;First input and output termination IGBT pipe of PFC on-off circuit 1127 The grid of 2001 and the grid of IGBT pipe 2002.

The operation principle of following description above-described embodiment and key parameter value: voltage source 2018 can be examined Considering and be designed as 0.5V, voltage source 2019 is it is contemplated that be designed as 0.6V.

On the basis of above-mentioned parameter, the SPM that the utility model proposes is when real work It is possible that situations below:

Situation 1: when ITRIP voltage < during 0.5V, voltage comparator 2010 output low level, thus Second outfan output low level of adaptive circuit 1105, and NAND gate 2011 exports high electricity Flat, thus not gate 2016 output low level makes ICON output low level.Because adaptive circuit The second outfan output low level of 1105, now the first input and output of PFC on-off circuit 1127 End be connected with the negative electrode of PFC pipe 2002, the second input/output terminal of PFC on-off circuit 1127 and The anode of PFC pipe 2002 is connected.

Situation 2: as ITRIP voltage >=0.6V, voltage comparator 2010 exports high level, and And voltage comparator 2014 exports high level, NAND gate 2011 output low level, thus not gate 2016 output high level make ICON export high level, and SPM 1100 enters guard mode Quit work.

Situation 3: < during 0.6V, voltage comparator 2010 exports high electricity when 0.5V≤ITIRP voltage Flat, thus the second outfan output high level of adaptive circuit 1105;And voltage comparator 2014 output low levels, the outfan high level of NAND gate 2011, thus not gate 2016 exports low Level makes ICON output low level;Because the second high electricity of outfan output of adaptive circuit 1105 Flat, the now negative electrode phase of the first input/output terminal of PFC on-off circuit 1127 and PFC pipe 2001 Even, the second input/output terminal of PFC on-off circuit 1127 is connected with the anode of PFC pipe 2001.

Under same process, by the regulation mode such as dopant concentration, regulation IGBT pipe open speed and The relation of saturation voltage drop, it is thus achieved that IGBT pipe 2001 and IGBT pipe 2002, IGBT pipe 2001 selects Selecting and open speed compared with slow but that saturation voltage drop is relatively low IGBT pipe, IGBT pipe 2002 selects to open speed Very fast but that saturation voltage drop is higher IGBT manages.Usually, the service time (electricity of IGBT pipe 2001 Stream rises, voltage falling time) select hundred nanosecond rank, service time of IGBT pipe 2002 (electricity Stream rise, voltage falling time) select ten nanosecond rank.

From the technical scheme of above-described embodiment, the SPM that the utility model proposes is with existing Row SPM is completely compatible, can directly be replaced with existing SPM. ITRIP is first with a relatively low voltage ratio relatively, it is ensured that the sensitivity to SPM overcurrent protection On the premise of, by adjusting the switching speed of IGBT in pfc circuit (by making PFC switch electricity Road 1127 realizes the power switch pipe of corresponding function and realizes) reduce voltage noise take into account intelligent power The stability of module work;And when ITRIP is higher than a higher voltage, for ensureing intelligent power The safety of module and stop SPM work;So that SPM of the present utility model On the premise of normal protective mechanisms persistently comes into force, maintain the stability of system, availability, stalwartness Property, improve the user satisfaction of product, reduce product and complain.

The technical solution of the utility model is described in detail above in association with accompanying drawing, the utility model proposes A kind of new SPM, can be on the premise of realizing overcurrent protection, should by judgement voluntarily Regulate the duty of pfc circuit by the wiring environment of circuit, exist improving SPM Stability during work.

The foregoing is only preferred embodiment of the present utility model, be not limited to this practicality new Type, for a person skilled in the art, this utility model can have various modifications and variations.All Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, Within should be included in protection domain of the present utility model.

Claims (10)

1. a SPM, it is characterised in that including:
Brachium pontis signal input part, three-phase low reference voltage under brachium pontis signal input part, three-phase on three-phase End, current detecting end, PFC end and PFC low reference voltage end;
HVIC manages, and described HVIC pipe is provided with to be respectively connecting to brachium pontis signal on described three-phase defeated Enter the terminals of brachium pontis signal input part under end and described three-phase, and be connected to described current detecting end The first port, described HVIC pipe is additionally provided with the signal output part of PFC drive circuit;
Adaptive circuit, the input of described adaptive circuit is connected to described first port, described from First outfan of adaptive circuit is as the Enable Pin of described HVIC pipe;
PFC on-off circuit, the first input/output terminal of described PFC on-off circuit, second input defeated Go out end, the 3rd input/output terminal and the 4th input/output terminal are connected respectively to described PFC and drive The signal output part of circuit, described PFC low reference voltage end, described PFC end and described self adaptation Second outfan of circuit;
Wherein, the level signal that described PFC on-off circuit inputs according to its 4th input/output terminal, Realize the function with the power switch pipe of the first switching speed and the first saturation voltage drop, or realization has The function of the power switch pipe of second switch speed and the second saturation voltage drop, described first switching speed is big In described second switch speed, described first saturation voltage drop is more than described second saturation voltage drop;Described from Adaptive circuit is according to the size of the input signal of its input, by the corresponding electricity of its first outfan output Flat enable signal, and realize phase by its second outfan output described PFC on-off circuit of control Answer the level signal of the power switch pipe of function.
SPM the most according to claim 1, it is characterised in that:
Described adaptive circuit, when the value of the input signal of its input is less than the first setting value, passes through Its first outfan exports the enable signal of the first level, to allow described HVIC pipe to work, and leads to Cross its second outfan and export the signal of described first level;
Described adaptive circuit sets more than or equal to described first in the value of the input signal of its input When being worth and be less than the second setting value, the enable being exported described first level by its first outfan is believed Number, and by the signal of its second outfan output second electrical level;
Described adaptive circuit sets more than or equal to described second in the value of the input signal of its input During value, exported the enable signal of described second electrical level by its first outfan, described to forbid HVIC pipe works, and is exported the signal of described second electrical level by its second outfan.
SPM the most according to claim 1, it is characterised in that described self adaptation Circuit includes:
First voltage comparator, the positive input terminal of described first voltage comparator is as described self adaptation electricity The input on road, the negative input end of described first voltage comparator is connected to the positive pole of the first voltage source, The negative pole of described first voltage source is connected to the power supply negative pole of described adaptive circuit, and described first The outfan of voltage comparator is connected to first input end and the input of the first not gate of NAND gate, institute The outfan stating the first not gate is connected to the input of the second not gate, and the outfan of described second not gate is made The second outfan for described adaptive circuit;
Second voltage comparator, the positive input terminal of described second voltage comparator is connected to described first electricity The positive input terminal of pressure comparator, the negative input end of described second voltage comparator is connected to the second voltage source Positive pole, the negative pole of described second voltage source is connected to the power supply negative pole of described adaptive circuit, The outfan of described second voltage comparator is connected to the second input of described NAND gate, described and non- The outfan of door is connected to the input of the 3rd not gate, the outfan of described 3rd not gate as described from First outfan of adaptive circuit;
Wherein, power supply positive pole and the negative pole of described adaptive circuit is connected respectively to described intelligence The low-pressure area power supply anode of energy power model and negative terminal.
SPM the most according to claim 1, it is characterised in that:
Described PFC on-off circuit is when its 4th input/output terminal inputs the signal of the first level, real Now there is the function of the power switch pipe of described first switching speed and described first saturation voltage drop;
Described PFC on-off circuit is when the signal of its 4th input/output terminal input second electrical level, real Now there is the function of the power switch pipe of described second switch speed and described second saturation voltage drop.
SPM the most according to claim 1, it is characterised in that described PFC opens Pass circuit includes:
First analog switch, the fixing end of described first analog switch is as described PFC on-off circuit The 3rd input/output terminal, described first analog switch first selection end be connected to the first power switch The colelctor electrode of pipe, the second selection end of described first analog switch is connected to the collection of the second power switch pipe Electrode;
Second analog switch, the fixing end of described second analog switch is as described PFC on-off circuit The second input/output terminal, described second analog switch first selection end be connected to described first power The emitter stage of switching tube, the second selection end of described second analog switch is connected to described second power and opens Close the emitter stage of pipe;
Wherein, the control end phase controlling end and described first analog switch of described second analog switch Connect, and as the 4th input/output terminal of described PFC on-off circuit;Described first power switch pipe Grid be connected with the grid of described second power switch pipe, and as described PFC on-off circuit First input/output terminal.
SPM the most according to any one of claim 1 to 5, its feature exists In, also including: boostrap circuit, described boostrap circuit includes:
First bootstrap diode, the anode of described first bootstrap diode is connected to described intelligent power mould The low-pressure area power supply anode of block, the negative electrode of described first bootstrap diode is connected to described intelligence merit The U phase higher-pressure region power supply anode of rate module;
Second bootstrap diode, the anode of described second bootstrap diode is connected to described intelligent power mould The low-pressure area power supply anode of block, the negative electrode of described second bootstrap diode is connected to described intelligence merit The V phase higher-pressure region power supply anode of rate module;
3rd bootstrap diode, the anode of described 3rd bootstrap diode is connected to described intelligent power mould The low-pressure area power supply anode of block, the negative electrode of described 3rd bootstrap diode is connected to described intelligence merit The W phase higher-pressure region power supply anode of rate module.
SPM the most according to any one of claim 1 to 5, its feature exists In, also include:
Bridge arm circuit on three-phase, the input of bridge arm circuit in each phase in bridge arm circuit on described three-phase End is connected to the signal output part of corresponding phase in the three-phase high-voltage district of described HVIC pipe;
Bridge arm circuit under three-phase, the input of bridge arm circuit under each phase in bridge arm circuit under described three-phase End is connected to the signal output part of corresponding phase in the three-phase low-voltage district of described HVIC pipe.
SPM the most according to claim 7, it is characterised in that described each phase Upper bridge arm circuit includes:
3rd power switch pipe and the first diode, the anode of described first diode is connected to described The emitter stage of three power switch pipes, the negative electrode of described first diode is connected to described 3rd power switch The colelctor electrode of pipe, the colelctor electrode of described 3rd power switch pipe is connected to the height of described SPM Voltage input end, the base stage of described 3rd power switch pipe is as bridge arm circuit defeated in described each phase Entering end, the emitter stage of described 3rd power switch pipe is connected to the height of described SPM correspondence phase Nip power supply negative terminal.
SPM the most according to claim 8, it is characterised in that described each phase Lower bridge arm circuit includes:
4th power switch pipe and the second diode, the anode of described second diode is connected to described The emitter stage of four power switch pipes, the negative electrode of described second diode is connected to described 4th power switch The colelctor electrode of pipe, the colelctor electrode of described 4th power switch pipe is connected in the upper bridge arm circuit of correspondence The anode of described first diode, the base stage of described 4th power switch pipe is as bridge under described each phase The input of arm circuit, the emitter stage of described 4th power switch pipe is as described SPM The low reference voltage end of corresponding phase.
10. an air-conditioner, it is characterised in that including: institute as any one of claim 1 to 9 The SPM stated.
CN201620513571.XU 2016-05-30 2016-05-30 SPM and air-conditioner CN205792230U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620513571.XU CN205792230U (en) 2016-05-30 2016-05-30 SPM and air-conditioner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201620513571.XU CN205792230U (en) 2016-05-30 2016-05-30 SPM and air-conditioner
PCT/CN2016/097737 WO2017206385A1 (en) 2016-05-30 2016-08-31 Intelligent power module and air conditioner

Publications (1)

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CN205792230U true CN205792230U (en) 2016-12-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105790565A (en) * 2016-05-30 2016-07-20 广东美的制冷设备有限公司 Intelligent power module and air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105790565A (en) * 2016-05-30 2016-07-20 广东美的制冷设备有限公司 Intelligent power module and air conditioner

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