CN105703657B - SPM and air conditioner - Google Patents
SPM and air conditioner Download PDFInfo
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- CN105703657B CN105703657B CN201610126188.3A CN201610126188A CN105703657B CN 105703657 B CN105703657 B CN 105703657B CN 201610126188 A CN201610126188 A CN 201610126188A CN 105703657 B CN105703657 B CN 105703657B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies 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
The invention provides a kind of SPM and air conditioner, the first port corresponding to current detecting end is provided with the HVIC pipes in SPM；The first input end of adaptive circuit is connected to first port, Enable Pin of the output end as HVIC pipes；The first input/output terminal, the second input/output terminal and the output end of PFC freewheeling circuits are connected respectively to second input at PFC ends, IPM high voltage input and adaptive circuit, PFC freewheeling circuits are according to IPM temperature, realize function of the forward conduction voltage drop less than the fly-wheel diode of predetermined pressure drop value or realize function of the Reverse recovery duration less than the fly-wheel diode of scheduled duration, and when IPM temperature is less than predetermined temperature value, export the signal of the first level, when IPM temperature is higher than predetermined temperature value, the signal of second electrical level is exported；Wherein, the level signal that adaptive circuit inputs according to the size of the input signal of first input end and the second input, the enable signal of corresponding level is exported.
Description
Technical field
It is empty in particular to a kind of SPM and one kind the present invention relates to SPM technical field
Adjust device.
Background technology
SPM (Intelligent Power Module, abbreviation IPM) is a kind of by power electronics deviding device
The analog line driver that part and integrated circuit technique integrate, SPM include device for power switching and high drive
Circuit, and with failure detector circuits such as overvoltage, overcurrent and overheats.The logic input terminal of SPM receives master control
The control signal of device processed, output end driving compressor or subsequent conditioning circuit work, while the system status signal detected is sent back to
Master controller.Relative to traditional discrete scheme, SPM has high integration, high reliability, self-test and protection circuit
Etc. advantage, be particularly suitable for the frequency converter of motor and various inverters, be frequency control, metallurgical machinery, electric propulsion,
The desired power level electronic device of servo-drive, frequency-conversion domestic electric appliances.
The structural representation of existing Intelligent power module circuit as shown in figure 1, MTRIP ports as current detecting end,
To be protected according to the size of current detected to SPM 100.PFCIN ports are as SPM
PFC (Power Factor Correction, PFC) control signal.
In the SPM course of work, certain frequency frequent switching between low and high level is pressed at PFCINP ends, is made
IGBT pipes 127 are continuously on off state and FRD pipes 131 are continuously in freewheeling state, the frequency be generally LIN1~LIN3,
2~4 times of HIN1~HIN3 switching frequencies, and do not contacted directly with LIN1~LIN3, HIN1~HIN3 switching frequency.
As shown in Fig. 2 UN, VN, WN meet one end of milliohm resistance 138, another the termination GND, MTRIP of milliohm resistance 138
It is current detecting pin, connects one end of milliohm resistance 138, electric current is calculated by the pressure drop for detecting milliohm resistance, as shown in figure 3,
When current is excessive, SPM 100 is stopped, avoid after producing overheat because of excessively stream, to SPM 100
Produce permanent damage.
- VP, COM, UN, VN, WN have electrical connection in actual use.Therefore, 121~IGBT of IGBT pipes pipes 127 are opened
Current noise when voltage noise during pass and FRD 111~FRD of pipe pipes 116, FRD 131 afterflows of pipe can all intercouple, right
The input pin of each low-voltage area impacts.
In each input pin, HIN1~HIN3, LIN1~LIN3, PFCINP threshold value typically in 2.3V or so, and
ITRIP threshold voltage typically only has below 0.5V, and therefore, ITRIP is the pin for being most susceptible to interference.When ITRIP by
Triggering, SPM 100 will be stopped, and because excessively stream now really occurs, ITRIP now tactile
Hair belongs to false triggering.As shown in figure 4, it is high level in PFCIN, when IGBT pipes 127 open moment, because FRD pipes 131 is reverse
The presence of restoring current, is superimposed out I131Current waveform, the electric current has larger concussion noise, by-VP, COM, UN, VN,
Electrical connections of the WN in peripheral circuit, concussion noise close out certain voltage in MTRIP ends meeting lotus root and raised.If trigger MTRIP
Condition be：Voltage>Vth, and duration>Tth；In Fig. 4, if Ta<Tth<Tb is then too high in the voltage in first three cycle
It is insufficient to allow MTRIP to produce false triggering, to the 4th cycle, MTRIP will produce false triggering.
In fact, because the reverse recovery time of FRD pipes and reverse recovery current are positive temperature coefficients, temperature is higher, instead
It is longer to recovery time, therefore as the continuous firing of system, the constant temperature of SPM 100 rise, MTRIP is touched
The probability of hair is increasing.As shown in figure 5, at 25 DEG C, voltage pulsation caused by FRD Reverse recovery effect is not enough to cause
MTRIP is triggered, and as temperature raises, at 75 DEG C, MTRIP is triggered, and makes system stalls.Although this false triggering exists
It can recover to destroy without forming system after a period of time, but undoubtedly user can be caused to perplex.Such as transducer air conditioning
Application scenario, it is exactly user when more need air-conditioning system continuous firing that environment temperature is higher, but high environment temperature meeting
Increase the reverse recovery time of FRD pipes, MTRIP is improved by the probability of false triggering, once MTRIP is by false triggering, air-conditioning system
User can be made can not during this period of time to obtain cold wind, this is to cause because being mistakenly considered to be stopped 3~5 minutes excessively stream occurs
Air-conditioning system is because refrigerating capacity deficiency is by one of the main reason for customer complaint.
Therefore, how to ensure that SPM can be at normal temperatures on the premise of low-power consumption normal work, effective drop
Low SPM turns into technical problem urgently to be resolved hurrily by the probability of false triggering at high temperature.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of new SPM, intelligent work(can ensured
Rate module can effectively reduce SPM at high temperature by false triggering at normal temperatures on the premise of low-power consumption normal work
Probability.
It is another object of the present invention to propose a kind of air conditioner.
To achieve the above object, embodiment according to the first aspect of the invention, it is proposed that a kind of SPM, bag
Include：Bridge arm signal input part, three-phase low reference voltage end, current detecting end and PFC under bridge arm signal input part, three-phase on three-phase
End；HVIC (High Voltage IntegratedCircuit, high voltage integrated circuit) is managed, and difference is provided with the HVIC pipes
The terminals of bridge arm signal input part under bridge arm signal input part and the three-phase on the three-phase are connected to, and corresponding to institute
The first port at current detecting end is stated, the first port is connected by connecting line with the current detecting end；Sampling resistor, institute
State three-phase low reference voltage end and the current detecting end and be connected to the first end of the sampling resistor, the sampling resistor
Second end is connected to the low-pressure area power supply negative terminal of the SPM；Adaptive circuit, the adaptive circuit
First input end is connected to the first port, the Enable Pin of the output end of the adaptive circuit as the HVIC pipes；PFC
Freewheeling circuit, the first input/output terminal, the second input/output terminal and the output end of the PFC freewheeling circuits be connected respectively to
Second input at the PFC ends, the high voltage input of the SPM and the adaptive circuit, the PFC
Freewheeling circuit realizes that forward conduction voltage drop is less than the fly-wheel diode of predetermined pressure drop value according to the temperature of the SPM
Function or realize function of the Reverse recovery duration less than the fly-wheel diode of scheduled duration, and in the SPM
When temperature is less than predetermined temperature value, the signal of the first level is exported by the output end of the PFC freewheeling circuits, in the intelligence
When the temperature of power model is higher than the predetermined temperature value, second electrical level is exported by the output end of the PFC freewheeling circuits
Signal；
Wherein, size and second input of the adaptive circuit according to the input signal of the first input end
The level signal of input, the enable signal of corresponding level is exported by the output end of the adaptive circuit.
SPM according to an embodiment of the invention, PFC freewheeling circuits pass through the temperature according to SPM
Degree, realize function of the forward conduction voltage drop less than the fly-wheel diode of predetermined pressure drop value or realize Reverse recovery duration less than predetermined
The function of the fly-wheel diode of duration so that when the temperature of SPM is less than predetermined temperature value, it is possible to achieve positive
Conduction voltage drop is less than the function of the fly-wheel diode of predetermined pressure drop value, to reduce work(when SPM works at normal temperatures
Consumption；Simultaneously can be when the temperature of SPM be higher than predetermined temperature value, it is possible to achieve Reverse recovery duration is less than predetermined
The function of the fly-wheel diode of duration, with reduce SPM temperature it is higher caused by circuit noise, to reduce intelligence
By the probability of false triggering when energy power model works at high temperature.
Adaptive circuit passes through the input signal according to its first input end (i.e. first port, namely current detecting end)
Size and the level signal of the second input input, export the enable signal of corresponding level so that in the temperature of SPM
When spending relatively low, adaptive circuit can make a response according to the signal value that current detecting end detects, to ensure intelligent power
Module under normal temperature (when i.e. less than predetermined temperature value) can normal work, and carry out overcurrent protection.And in SPM
Temperature when being higher than predetermined temperature value, can by larger standard value (be more than temperature it is relatively low when standard value) determine whether
The enable signal that output control HVIC pipes are stopped, and then can effectively reduce quilt when SPM works at high temperature
The probability of false triggering.
SPM according to the abovementioned embodiments of the present invention, there can also be following technical characteristic：
According to one embodiment of present invention, the adaptive circuit inputs first level in second input
Signal when, if the value of the input signal of the first input end is more than or equal to the first setting value, by described adaptive
The output end of circuit exports the enable signal of first level, to forbid the HVIC pipes to work；Otherwise, by described adaptive
The output end of circuit is answered to export the enable signal of the second electrical level, to allow the HVIC pipes to work；
The adaptive circuit is when second input inputs the signal of the second electrical level, if first input
The value of the input signal at end is more than or equal to the second setting value, then exports described first by the output end of the adaptive circuit
The enable signal of level；Otherwise, the enable signal of the second electrical level is exported by the output end of the adaptive circuit；
Wherein, second setting value is more than first setting value.
According to one embodiment of present invention, the adaptive circuit includes：
First voltage comparator, the positive input terminal of the first voltage comparator are first defeated as the adaptive circuit
Enter end, the negative input end of the first voltage comparator is connected to the positive pole of first voltage source, the negative pole of the first voltage source
The power supply negative pole of the adaptive circuit is connected to, the output end of the first voltage comparator is connected to the first simulation and opened
The first choice end of pass and the first input end of the first NAND gate, power supply positive pole and the negative pole difference of the adaptive circuit
It is correspondingly connected to the low-pressure area power supply anode and negative terminal of the SPM；
Second voltage comparator, the positive input terminal of the second voltage comparator are connected to the first voltage comparator
Positive input terminal, the negative input end of the second voltage comparator are connected to the positive pole of the second voltage source, the second voltage source
Negative pole is connected to the power supply negative pole of the adaptive circuit, and the output end of the second voltage comparator is connected to described
Second input of one NAND gate, the output end of first NAND gate are connected to the input of the first NOT gate, and described first is non-
The output end of door is connected to the second selection end of first analog switch, described in the control terminal of first analog switch is used as
Second input of adaptive circuit, the fixing end of first analog switch are connected to the input of the second NOT gate, and described
Output end of the output end of two NOT gates as the adaptive circuit.
According to one embodiment of present invention, the PFC freewheeling circuits are less than pre- in the temperature of the SPM
During constant temperature angle value, function of the forward conduction voltage drop less than the fly-wheel diode of predetermined pressure drop value is realized；And the PFC afterflows electricity
Realize Reverse recovery duration less than scheduled duration when the temperature of the SPM is higher than the predetermined temperature value in road
The function of fly-wheel diode.
According to one embodiment of present invention, the PFC freewheeling circuits include：First resistor, the of the first resistor
One end is connected to the power supply positive pole of the PFC freewheeling circuits, and the second end of the first resistor is connected to voltage-regulator diode
Negative electrode, the anode of the voltage-regulator diode is connected to the power supply negative pole of the PFC freewheeling circuits, the PFC afterflows electricity
The power supply positive pole and negative pole on road are respectively connecting to the low-pressure area power supply anode and negative terminal of the SPM；
Second resistance, the first end of the second resistance are connected to the second end of the first resistor, the second resistance
The second end be connected to the positive input terminal of tertiary voltage comparator；
Thermistor, the first end of the thermistor are connected to the second end of the second resistance, the thermistor
The second end be connected to the anode of the voltage-regulator diode；
Tertiary voltage source, the negative pole in the tertiary voltage source are connected to the anode of the voltage-regulator diode, the 3rd electricity
The positive pole of potential source is connected to the negative input end of the tertiary voltage comparator, and the output end of the tertiary voltage comparator is connected to
The input of 3rd NOT gate, the output end of the 3rd NOT gate are connected to the input of the 4th NOT gate, the 4th NOT gate it is defeated
Go out output end of the end as the PFC freewheeling circuits；
Second analog switch, the fixing end of second analog switch are defeated as the first input of the PFC freewheeling circuits
Go out end, the first choice end of second analog switch is connected to the negative electrode of the first fly-wheel diode, second analog switch
The second selection end be connected to the negative electrode of the second fly-wheel diode, the control terminal of second analog switch is connected to the described 4th
The output end of NOT gate；
3rd analog switch, the fixing end of the 3rd analog switch are defeated as the second input of the PFC freewheeling circuits
Go out end, the first choice end of the 3rd analog switch is connected to the anode of first fly-wheel diode, the 3rd simulation
Second selection end of switch is connected to the anode of second fly-wheel diode, and the control terminal of the 3rd analog switch is connected to
The output end of 4th NOT gate；
Wherein, the forward conduction voltage drop of first fly-wheel diode is less than predetermined pressure drop value, the pole of the second afterflow two
The Reverse recovery duration of pipe is less than scheduled duration, and the thermistor is arranged on first fly-wheel diode and described second and continued
Flow the position where diode.
According to one embodiment of present invention, the signal output part of PFC drive circuits, institute are additionally provided with the HVIC pipes
Stating SPM also includes：First power switch pipe and the first diode, the anode of first diode are connected to institute
The emitter stage of the first power switch pipe is stated, the negative electrode of first diode is connected to the current collection of first power switch pipe
Pole, the base stage of first power switch pipe are connected to the signal output part of the PFC drive circuits, first power switch
PFC low reference voltage end of the emitter stage of pipe as the SPM, the colelctor electrode of first power switch pipe are made
For the PFC ends.
Wherein, the first power switch pipe can be IGBT (Insulated Gate Bipolar Transistor, insulation
Grid bipolar transistor).
According to one embodiment of present invention, in addition to：Boostrap circuit, the boostrap circuit include：
First bootstrap diode, the anode of first bootstrap diode are connected to the low-pressure area of the SPM
Power supply anode, the negative electrode of first bootstrap diode are connected to the U phases higher-pressure region power supply electricity of the SPM
Source anode；Second bootstrap diode, the anode of second bootstrap diode are connected to the low-pressure area of the SPM
Power supply anode, the negative electrode of second bootstrap diode are connected to the V phases higher-pressure region power supply electricity of the SPM
Source anode；3rd bootstrap diode, the anode of the 3rd bootstrap diode are connected to the low-pressure area of the SPM
Power supply anode, the negative electrode of the 3rd bootstrap diode are connected to the W phases higher-pressure region power supply electricity of the SPM
Source anode.
According to one embodiment of present invention, in addition to：Bridge arm circuit on three-phase, it is every in bridge arm circuit on the three-phase
The input of bridge arm circuit is connected to the signal output part that phase is corresponded in the three-phase high-voltage area of the HVIC pipes in one phase；Under three-phase
Bridge arm circuit, the input of bridge arm circuit is connected to the three-phase of the HVIC pipes under each phase under the three-phase in bridge arm circuit
The signal output part of phase is corresponded in low-pressure area.Wherein, bridge arm circuit includes on three-phase：Bridge arm circuit in U phases, bridge arm electricity in V phases
Bridge arm circuit on road, W phases；Bridge arm circuit includes under three-phase：Bridge arm is electric under bridge arm circuit, W phases under bridge arm circuit, V phases under U phases
Road.
According to one embodiment of present invention, bridge arm circuit includes in each phase：Second power switch pipe and second
Diode, the anode of second diode are connected to the emitter stage of second power switch pipe, second diode
Negative electrode is connected to the colelctor electrode of second power switch pipe, and the colelctor electrode of second power switch pipe is connected to the intelligence
The high voltage input of power model, the input of the base stage of second power switch pipe as bridge arm circuit in each phase
End, the emitter stage of second power switch pipe, which is connected to the SPM and corresponds to the higher-pressure region power supply of phase, to be born
End.Wherein, the second power switch pipe can be IGBT.
According to one embodiment of present invention, bridge arm circuit includes under each phase：3rd power switch pipe and the 3rd
Diode, the anode of the 3rd diode are connected to the emitter stage of the 3rd power switch pipe, the 3rd diode
Negative electrode is connected to the colelctor electrode of the 3rd power switch pipe, and the colelctor electrode of the 3rd power switch pipe is connected on corresponding
The anode of second diode in bridge arm circuit, the base stage of the 3rd power switch pipe is as bridge arm under each phase
The input of circuit, the emitter stage of the 3rd power switch pipe are joined as the low-voltage of the corresponding phase of the SPM
Examine end.Wherein, the 3rd power switch pipe can be IGBT.
According to one embodiment of present invention, the voltage of the high voltage input of the SPM is 300V.
According to one embodiment of present invention, the anode of each phase higher-pressure region power supply of the SPM and
Filter capacitor is connected between negative terminal.
Embodiment according to a second aspect of the present invention, it is also proposed that a kind of air conditioner, including：Any one embodiment as described above
Described in SPM.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, 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 the waveform diagram that current signal triggering SPM is stopped；
Fig. 4 shows a kind of waveform diagram of noise caused by SPM in correlation technique；
Fig. 5 shows another waveform diagram of noise caused by SPM in correlation technique；
Fig. 6 shows the structural representation of SPM according to an embodiment of the invention；
Fig. 7 shows the internal structure schematic diagram of adaptive circuit according to an embodiment of the invention；
Fig. 8 shows the internal structure schematic diagram of PFC freewheeling circuits according to an embodiment of the invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 6 shows the structural representation of SPM according to an embodiment of the invention.
As shown in fig. 6, SPM according to an embodiment of the invention, including：HVIC pipes 1101 and adaptive electricity
Road 1105.
The VCC ends of HVIC pipes 1101 are general as low-pressure area power supply the anode VDD, VDD of SPM 1100
For 15V；
Inside HVIC pipes 1101：
ITRIP ends connect the first input end of adaptive circuit 1105；The power supply electricity of VCC ends connection adaptive circuit 1105
Source anode；GND ends connect the power supply negative terminal of adaptive circuit 1105；The output end of adaptive circuit 1105 is designated as ICON,
For controlling the validity of HIN1~HIN3, LIN1~LIN3, PFCINP signals；Second input of adaptive circuit 1105 connects
It is connected to the PFCC ends of HVIC pipes 1101.
The inside of HVIC pipes 1101 also has boostrap circuit structure as follows：
VCC ends are connected with the anode of bootstrap diode 1102, bootstrap diode 1103, bootstrap diode 1104；Bootstrapping two
The negative electrode of pole pipe 1102 is connected with the VB1 of HVIC pipes 1101；The VB2 phases of the negative electrode of bootstrap diode 1103 and HVIC pipes 1101
Even；The negative electrode of bootstrap diode 1104 is connected with the VB3 of HVIC pipes 1101.
The HIN1 ends of HVIC pipes 1101 are bridge arm signal input part UHIN in the U phases of SPM 1100；HVIC is managed
1101 HIN2 ends are bridge arm signal input part VHIN in the V phases of SPM 1100；The HIN3 ends of HVIC pipes 1101 are
Bridge arm signal input part WHIN in the W phases of SPM 1100；The LIN1 ends of HVIC pipes 1101 are SPM
Bridge arm signal input part ULIN under 1100 U phases；The LIN2 ends of HVIC pipes 1101 are bridge arm under the V phases of SPM 1100
Signal input part VLIN；The LIN3 ends of HVIC pipes 1101 are bridge arm signal input part WLIN under the W phases of SPM 1100；
The ITRIP ends of HVIC pipes 1101 are the MTRIP ends of SPM 1100；The PFCINP ends of HVIC pipes 1101 are as intelligent work(
The PFC control signals PFCIN of rate module 100；The GND ends of HVIC pipes 1101 supply as the low-pressure area of SPM 1100
Electric power supply negative terminal COM.Wherein, SPM 1100 the tunnel of UHIN, VHIN, WHIN, ULIN, VLIN, WLIN six input and
PFCIN ends receive 0V or 5V input signal.
One end of the VB1 ends connection electric capacity 1131 of HVIC pipes 1101, and as the U phases higher-pressure region of SPM 1100
Power supply anode UVB；The HO1 ends of HVIC pipes 1101 are connected with the grid of bridge arm IGBT pipes 1121 in U phases；HVIC pipes 1101
VS1 ends and colelctor electrode, the FRD pipes 1114 of bridge arm IGBT pipes 1124 under the emitter-base bandgap grading of IGBT pipes 1121, the anode of FRD pipes 1111, U phases
Negative electrode, the other end of electric capacity 1131 be connected, and as the U phases higher-pressure region power supply negative terminal UVS of SPM 1100.
One end of the VB2 ends connection electric capacity 1132 of HVIC pipes 1101, and as the V phases higher-pressure region of SPM 1100
Power supply anode VVB；The HO2 ends of HVIC pipes 1101 are connected with the grid of bridge arm IGBT pipes 1123 in V phases；HVIC pipes 1101
VS2 ends and colelctor electrode, the FRD pipes 1115 of bridge arm IGBT pipes 1125 under the emitter-base bandgap grading of IGBT pipes 1122, the anode of FRD pipes 1112, V phases
Negative electrode, the other end of electric capacity 1132 be connected, and as the V phases higher-pressure region power supply negative terminal VVS of SPM 1100.
One end of the VB3 ends connection electric capacity 1133 of HVIC pipes 1101, the W phases higher-pressure region as SPM 1100 supplies
Electric power positive end WVB；The HO3 ends of HVIC pipes 1101 are connected with the grid of bridge arm IGBT pipes 1123 in W phases；HVIC pipes 1101
VS3 ends and colelctor electrode, the FRD pipes 1116 of bridge arm IGBT pipes 1126 under the emitter-base bandgap grading of IGBT pipes 1123, the anode of FRD pipes 1113, W phases
Negative electrode, the other end of electric capacity 1133 be connected, and as the W phases higher-pressure region power supply negative terminal WVS of SPM 1100.
The LO1 ends of HVIC pipes 1101 are connected with the grid of IGBT pipes 1124；The LO2 ends of HVIC pipes 1101 and IGBT pipes 1125
Grid be connected；The LO3 ends of HVIC pipes 1101 are connected with the grid of IGBT pipes 1126；The emitter-base bandgap grading of IGBT pipes 1124 is managed with FRD
1114 anode is connected, and as the U phase low reference voltages end UN of SPM 1100；The emitter-base bandgap grading of IGBT pipes 1125 with
The anode of FRD pipes 1115 is connected, and as the V phase low reference voltages end VN of SPM 1100；IGBT pipes 1126 are penetrated
Pole is connected with the anode of FRD pipes 1116, and as the W phase low reference voltages end WN of SPM 1100.
VDD is the power supply anode of HVIC pipes 1101, and GND is the power supply negative terminal of HVIC pipes 1101；VDD-GND voltages
Generally 15V；VB1 and VS1 is respectively the positive pole and negative pole of the power supply of U phases higher-pressure region, and HO1 is the output end of U phases higher-pressure region；
VB2 and VS2 is respectively the positive pole and negative pole of the power supply of V phases higher-pressure region, and HO2 is the output end of V phases higher-pressure region；VB3 and VS3 difference
For the positive pole and negative pole of the power supply of U phases higher-pressure region, HO3 is the output end of W phases higher-pressure region；LO1, LO2, LO3 are respectively U phases, V
The output end of phase, W phase low-pressure areas.
The PFCO ends of HVIC pipes 1101 are connected with the grid of IGBT pipes 1127；The emitter-base bandgap grading of IGBT pipes 1127 and FRD pipes 1117
Anode be connected, and as the PFC low reference voltages end-VP of SPM 1100；The colelctor electrode and FRD of IGBT pipes 1127
The negative electrode of pipe 1117, the first input/output terminal of adaptive PFC freewheeling circuits 1141 are connected, and are used as SPM 1100
PFC ends, PFCC ends connect the output end of adaptive PFC freewheeling circuits 1141.
Second input/output terminal of adaptive PFC freewheeling circuits 1141, the colelctor electrode of IGBT pipes 1121, FRD pipes 1111
Negative electrode, the colelctor electrode of IGBT pipes 1122, the negative electrode of FRD pipes 1112, the colelctor electrode of IGBT pipes 1123, the negative electrode phase of FRD pipes 1113
Even, and 300V is typically met as high voltage the input P, P of SPM 1100.
The effect of HVIC pipes 1101 is：
When ICON is high level, the 0 of input HIN1, HIN2, HIN3 or 5V logic input signal are passed to respectively
Output end HO1, HO2, HO3, LIN1, LIN2, LIN3 signal are passed into output end LO1, LO2, LO3 respectively, by PFCINP's
Signal passes to output end PFCO, and wherein HO1 is that VS1 or VS1+15V logic output signal, HO2 are patrolling for VS2 or VS2+15V
Volume output signal, HO3 are VS3 or VS3+15V logic output signal, and LO1, LO2, LO3, PFCO are 0 or 15V logic output
Signal；
When ICON is low level, HO1, HO2, HO3, LO1, LO2, LO3, PFCO are all set to low level.
The effect of adaptive PFC freewheeling circuits 1141 is：
When temperature is less than a certain particular temperature value T1, PFCC is low level；Adaptive PFC freewheeling circuits 1141 are one
Forward conduction voltage drop is very low and FRD that reverse recovery time is slower pipe；
When temperature is higher than a certain particular temperature value T1, PFCC is high level；Adaptive PFC freewheeling circuits 1141 are one
Forward conduction voltage drop is higher and the FRD of reverse recovery time quickly is managed.
The effect of adaptive circuit 1105 is：
When PFCC is low level, if ITRIP real time value is more than a certain particular voltage level V1, ICON exports low electricity
Flat, otherwise ICON exports high level；
When PFCC is high level, if ITRIP real time value is more than a certain particular voltage level V2, ICON exports low electricity
Flat, otherwise ICON exports high level；Wherein, V2>V1.
In one embodiment of the invention, the particular circuit configurations of adaptive circuit 1105 are as shown in fig. 7, be specially：
ITRIP (i.e. the first input end of adaptive circuit 1105) connects positive input terminal, the voltage ratio of voltage comparator 2010
Compared with the positive input terminal of device 2023；The anode of the negative input termination voltage source 2018 of voltage comparator 2010；Voltage source 2018 is born
Terminate GND；
The anode of the negative input termination voltage source 2019 of voltage comparator 2023；The negative terminal of voltage source 2019 meets GND；
0 choosing of the one of input and analog switch 2022 of the output termination NAND gate 2025 of voltage comparator 2010
Select end；
One of input of the output termination NAND gate 2025 of voltage comparator 2023；The output end of NAND gate 2025
Connect the input of NOT gate 2026；1 selection end of the output termination analog switch 2022 of NOT gate 2026；The fixation of analog switch 2022
Terminate the input of NOT gate 2020；The output end of NOT gate 2020 is as ICON；The control terminal of analog switch 2022 is as adaptive
Second input of circuit 1105, it is connected with the output end of adaptive PFC freewheeling circuits 1141.
In one embodiment of the invention, the particular circuit configurations of PFC freewheeling circuits 1141 are as shown in figure 8, be specially：
One termination VCC of resistance 2016；One end of another terminating resistor 2013 of resistance 2016 and voltage-regulator diode 2011
Negative electrode；Another termination PTC (Positive Temperature Coefficient, positive temperature coefficient) resistance of resistance 2013
2012 one end, the positive input terminal of voltage comparator 2015；Another termination GND of voltage-regulator diode 2011；PTC resistor 2012
Another termination GND；
The anode of the negative input termination voltage source 2014 of voltage comparator 2015；The negative terminal of voltage source 2014 meets GND；Voltage
The input of the output termination NOT gate 2017 of comparator 2015；The input of the output termination NOT gate 2027 of NOT gate 2017；NOT gate
2027 control terminal of output termination analog switch 2003 and the control terminal of analog switch 2004, and it is used as adaptive PFC afterflows
The output end of circuit 1141；
The negative electrode of 1 selection termination FRD pipes 2001 of analog switch 2003；0 selection termination FRD pipes of analog switch 2003
2002 negative electrode；The anode of 1 selection termination FRD pipes 2001 of analog switch 2004；1 selection termination FRD of analog switch 2004
The anode of pipe 2002；
The fixing end of analog switch 2003 is the first input/output terminal of adaptive PFC freewheeling circuits 1141；Simulation is opened
The fixing end for closing 2004 is the second input/output terminal of adaptive PFC freewheeling circuits 1141.
Illustrate the operation principle and key parameter value of above-described embodiment below：
The clamp voltage design of voltage-regulator diode 2011 is 6.4V, and resistance 2016 is designed as 20k Ω, then produces one in B points
The 6.4V voltages not influenceed with VCC voltage pulsations of individual stabilization；PTC resistor 2012 is arranged in FRD pipes 2001 and FRD pipes 2002 are attached
Closely, and PTC resistor 2012 is it is contemplated that be designed as 10k Ω at 25 DEG C, 20k Ω at 100 DEG C；Resistance 2013 is designed as 44k Ω,
Voltage source 2014 is designed as 2V, then below 100 DEG C, voltage comparator 2015 exports low level, by NOT gate 2017 and NOT gate
Low level is exported after 2027, more than 100 DEG C, voltage comparator 2015 exports high level, by NOT gate 2017 and NOT gate 2027
After export high level.The metal-oxide-semiconductor size of NOT gate 2017 is contemplated that 1.5 times of the minimum dimension for being designed as technique permission, NOT gate
2027 metal-oxide-semiconductor size is contemplated that 2 times of the metal-oxide-semiconductor size for being designed as NOT gate 2017.
When the temperature of PTC resistor 2012 is more than 100 DEG C, NOT gate 2027 exports high level, and the negative electrode of FRD pipes 2001 is
First input/output terminal of adaptive PFC freewheeling circuits 1141, the anode of FRD pipes 2001 is adaptive PFC freewheeling circuits
1141 the second input/output terminal；
When the temperature of PTC resistor 2012 is less than 100 DEG C, NOT gate 2027 exports low level, and the negative electrode of FRD pipes 2002 is
First input/output terminal of adaptive PFC freewheeling circuits 1141, the anode of FRD pipes 2002 is adaptive PFC freewheeling circuits
1141 the second input/output terminal.
Under same process, join platinum concentration by adjusting, adjust the pass of FRD pipe reverse recovery times and forward conduction voltage drop
System, obtains FRD pipes 2001 and FRD pipes 2002, and FRD pipes 2001 may be selected reverse recovery time shorter FRD pipes, make adaptive
PFC freewheeling circuits 1141 remain to keep at high temperature shorter reverse recovery time, reduce the voltage disturbance to circuit, FRD pipes
The less FRD pipes of 2002 selection forward conduction voltage drops, make adaptive PFC freewheeling circuits 1141 have low forward conduction at low temperature
Pressure drop, preferable balance is obtained in reverse recovery time and forward conduction voltage drop.
Voltage source 2018 is designed as 0.5V, and voltage source 2019 is designed as 0.6V, and voltage source 2021 is designed as 0.7V；
When NOT gate 2027 exports low level, ITRIP voltage is with the voltage ratio of voltage source 2018 compared with when ITIRP voltages>
During 0.5V, voltage comparator 2010, which exports high level and ICON is produced low level, makes module from service；
When NOT gate 2027 exports high level, ITRIP is simultaneously with 0.5V, 0.6V, 0.7V voltage ratio compared with because voltage exists
It is incremented by, ITRIP voltage reaches 0.5V, it is necessary to which persistently rising a period of time can be only achieved 0.7V, therefore, even if ITRIP electricity
Pressure>0.5V, also to continue for some time can just make voltage comparator 2010, voltage comparator 2019, voltage comparator 2021 all
Output high level makes NAND gate 2025 export low level, this duration is depending on the ITRIP rate of rise.NAND gate
2025 and allow 4 times of minimum dimension of the taking technique of NOT gate 2026,60~100ns delay can be produced, so as to add ICON
To ITRIP response time.
From the technical scheme of above-described embodiment, SPM proposed by the present invention and existing SPM
It is completely compatible, directly it can be replaced with existing SPM.When temperature near FRD pipes is relatively low, ITRIP and one
Individual relatively low voltage ratio compared with, it is ensured that to the sensitivity of SPM overcurrent protection, when temperature is higher, ITRIP and one
Higher voltage ratio compared with, take into account SPM work stability；Also, when temperature is relatively low, pfc circuit uses positive
The lower FRD pipes of conduction voltage drop obtain lower power consumption, and when temperature is higher, PFC is managed using reverse recovery time shorter FRD
Reduce the voltage noise of circuit；So that the present invention SPM on the premise of normal protective mechanisms persistently come into force,
The stability of system is maintained, while improves the user satisfaction of product.
Technical scheme is described in detail above in association with accompanying drawing, the present invention proposes a kind of new intelligent power mould
Block, at normal temperatures on the premise of low-power consumption normal work, it can effectively reduce intelligent power ensuring SPM
Module is at high temperature by the probability of false triggering.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (6)
- A kind of 1. SPM, it is characterised in that including：Bridge arm signal input part under bridge arm signal input part, three-phase on three-phase, three-phase low reference voltage end, current detecting end and PFC ends；HVIC is managed, and is provided with the HVIC pipes and is respectively connecting on the three-phase bridge under bridge arm signal input part and the three-phase The terminals of arm signal input part, and the first port corresponding to the current detecting end, the first port pass through connection Line is connected with the current detecting end；Sampling resistor, the three-phase low reference voltage end and the current detecting end are connected to the first of the sampling resistor End, the second end of the sampling resistor is connected to the low-pressure area power supply negative terminal of the SPM；Adaptive circuit, the first input end of the adaptive circuit are connected to the first port, the adaptive circuit Enable Pin of the output end as the HVIC pipes；PFC freewheeling circuits, the first input/output terminal of the PFC freewheeling circuits, the second input/output terminal and output end are right respectively Second input at the PFC ends, the high voltage input of the SPM and the adaptive circuit should be connected to, The PFC freewheeling circuits realize that forward conduction voltage drop is continuous less than predetermined pressure drop value according to the temperature of the SPM Flow the function of diode or realize function of the Reverse recovery duration less than the fly-wheel diode of scheduled duration, and in the intelligent work( When the temperature of rate module is less than predetermined temperature value, the signal of the first level is exported by the output end of the PFC freewheeling circuits, When the temperature of the SPM is higher than the predetermined temperature value, pass through the output ends of PFC freewheeling circuits output the The signal of two level；Wherein, the adaptive circuit inputs according to the size of the input signal of the first input end and second input Level signal, the enable signal of corresponding level is exported by the output end of the adaptive circuit；The adaptive circuit is when second input inputs the signal of first level, if the first input end The value of input signal is more than or equal to the first setting value, then exports first level by the output end of the adaptive circuit Enable signal, to forbid the HVIC pipes to work；Otherwise, second electricity is exported by the output end of the adaptive circuit Flat enable signal, to allow the HVIC pipes to work；The adaptive circuit is when second input inputs the signal of the second electrical level, if the first input end The value of input signal is more than or equal to the second setting value, then exports first level by the output end of the adaptive circuit Enable signal；Otherwise, the enable signal of the second electrical level is exported by the output end of the adaptive circuit；Wherein, second setting value is more than first setting value；The adaptive circuit includes：First voltage comparator, the positive input terminal of the first voltage comparator input as the first of the adaptive circuit End, the negative input end of the first voltage comparator are connected to the positive pole of first voltage source, and the negative pole of the first voltage source connects The power supply negative pole of the adaptive circuit is connected to, the output end of the first voltage comparator is connected to the first analog switch First choice end and the first NAND gate first input end, the power supply positive pole and negative pole of the adaptive circuit be right respectively The low-pressure area power supply anode and negative terminal of the SPM should be connected to；Second voltage comparator, the positive input terminal of the second voltage comparator are connected to the just defeated of the first voltage comparator Enter end, the negative input end of the second voltage comparator is connected to the positive pole of the second voltage source, the negative pole of the second voltage source Be connected to the power supply negative pole of the adaptive circuit, the output end of the second voltage comparator be connected to described first with Second input of NOT gate, the output end of first NAND gate are connected to the input of the first NOT gate, first NOT gate Output end is connected to the second selection end of first analog switch, and the control terminal of first analog switch is as described adaptive The second input of circuit is answered, the fixing end of first analog switch is connected to the input of the second NOT gate, and described second is non- Output end of the output end of door as the adaptive circuit；The PFC freewheeling circuits realize forward conduction voltage drop when the temperature of the SPM is less than predetermined temperature value Less than the function of the fly-wheel diode of predetermined pressure drop value；AndThe PFC freewheeling circuits realize Reverse recovery when the temperature of the SPM is higher than the predetermined temperature value Function of the duration less than the fly-wheel diode of scheduled duration；The PFC freewheeling circuits include：First resistor, the first end of the first resistor are connected to the power supply positive pole of the PFC freewheeling circuits, and described first Second end of resistance is connected to the negative electrode of voltage-regulator diode, and the anode of the voltage-regulator diode is connected to the PFC freewheeling circuits Power supply negative pole, the power supply positive pole and negative pole of the PFC freewheeling circuits are respectively connecting to the SPM Low-pressure area power supply anode and negative terminal；Second resistance, the first end of the second resistance are connected to the second end of the first resistor, and the of the second resistance Two ends are connected to the positive input terminal of tertiary voltage comparator；Thermistor, the first end of the thermistor are connected to the second end of the second resistance, and the of the thermistor Two ends are connected to the anode of the voltage-regulator diode；Tertiary voltage source, the negative pole in the tertiary voltage source are connected to the anode of the voltage-regulator diode, the tertiary voltage source Positive pole be connected to the negative input end of the tertiary voltage comparator, the output end of the tertiary voltage comparator is connected to the 3rd The input of NOT gate, the output end of the 3rd NOT gate are connected to the input of the 4th NOT gate, the output end of the 4th NOT gate Output end as the PFC freewheeling circuits；Second analog switch, the first input/output terminal of the fixing end of second analog switch as the PFC freewheeling circuits, The first choice end of second analog switch is connected to the negative electrode of the first fly-wheel diode, and the second of second analog switch Selection end is connected to the negative electrode of the second fly-wheel diode, and the control terminal of second analog switch is connected to the 4th NOT gate Output end；3rd analog switch, the second input/output terminal of the fixing end of the 3rd analog switch as the PFC freewheeling circuits, The first choice end of 3rd analog switch is connected to the anode of first fly-wheel diode, the 3rd analog switch Second selection end is connected to the anode of second fly-wheel diode, and the control terminal of the 3rd analog switch is connected to described the The output end of four NOT gates；Wherein, the forward conduction voltage drop of first fly-wheel diode is less than predetermined pressure drop value, second fly-wheel diode Reverse recovery duration is less than scheduled duration, and the thermistor is arranged on first fly-wheel diode and second afterflow two Position where pole pipe.
- 2. SPM according to claim 1, it is characterised in that PFC drivings are additionally provided with the HVIC pipes The signal output part of circuit, the SPM also include：First power switch pipe and the first diode, the anode of first diode are connected to first power switch pipe Emitter stage, the negative electrode of first diode are connected to the colelctor electrode of first power switch pipe, first power switch The base stage of pipe is connected to the signal output part of the PFC drive circuits, described in the emitter stage of first power switch pipe is used as The PFC low reference voltages end of SPM, the colelctor electrode of first power switch pipe is as the PFC ends.
- 3. SPM according to claim 1 or 2, it is characterised in that also include：Bridge arm circuit on three-phase, the input of bridge arm circuit is connected to described in each phase on the three-phase in bridge arm circuit The signal output part of phase is corresponded in the three-phase high-voltage area of HVIC pipes；Bridge arm circuit under three-phase, the input of bridge arm circuit is connected to described under each phase under the three-phase in bridge arm circuit The signal output part of phase is corresponded in the three-phase low-voltage area of HVIC pipes.
- 4. SPM according to claim 3, it is characterised in that bridge arm circuit includes in each phase：Second power switch pipe and the second diode, the anode of second diode are connected to second power switch pipe Emitter stage, the negative electrode of second diode are connected to the colelctor electrode of second power switch pipe, second power switch The colelctor electrode of pipe is connected to the high voltage input of the SPM, and the base stage of second power switch pipe is as institute The input of bridge arm circuit in each phase is stated, the emitter stage of second power switch pipe is connected to the SPM pair Answer the higher-pressure region power supply negative terminal of phase.
- 5. SPM according to claim 4, it is characterised in that bridge arm circuit includes under each phase：3rd power switch pipe and the 3rd diode, the anode of the 3rd diode are connected to the 3rd power switch pipe Emitter stage, the negative electrode of the 3rd diode are connected to the colelctor electrode of the 3rd power switch pipe, the 3rd power switch The colelctor electrode of pipe is connected to the anode of second diode in corresponding upper bridge arm circuit, the 3rd power switch pipe Input of the base stage as bridge arm circuit under each phase, the emitter stage of the 3rd power switch pipe is as the intelligent work( The low reference voltage end of the corresponding phase of rate module.
- A kind of 6. air conditioner, it is characterised in that including：SPM as any one of claim 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126188.3A CN105703657B (en) | 2016-03-04 | 2016-03-04 | SPM and air conditioner |
| PCT/CN2016/097742 WO2017148121A1 (en) | 2016-03-04 | 2016-08-31 | Intelligent power module and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610126188.3A CN105703657B (en) | 2016-03-04 | 2016-03-04 | SPM and air conditioner |
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| CN105703657B true CN105703657B (en) | 2018-03-27 |
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| CN105322822A (en) * | 2015-11-30 | 2016-02-10 | 重庆美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN105356785A (en) * | 2015-11-30 | 2016-02-24 | 重庆美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN205453537U (en) * | 2016-03-04 | 2016-08-10 | 广东美的制冷设备有限公司 | Intelligence power module and air conditioner |
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| CN105322822A (en) * | 2015-11-30 | 2016-02-10 | 重庆美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN105356785A (en) * | 2015-11-30 | 2016-02-24 | 重庆美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN205453537U (en) * | 2016-03-04 | 2016-08-10 | 广东美的制冷设备有限公司 | Intelligence power module and air conditioner |
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