CN105790565B - SPM and air conditioner - Google Patents
SPM and air conditioner Download PDFInfo
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- CN105790565B CN105790565B CN201610374680.2A CN201610374680A CN105790565B CN 105790565 B CN105790565 B CN 105790565B CN 201610374680 A CN201610374680 A CN 201610374680A CN 105790565 B CN105790565 B CN 105790565B
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 2
- 230000004224 protection Effects 0.000 description 9
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- 238000004378 air conditioning Methods 0.000 description 3
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Classifications
-
- 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
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention provides a kind of SPM and air conditioner, the Enable Pin of the first output end of the adaptive circuit in SPM as HVIC pipes；The first input/output terminal, the second input/output terminal, the 3rd input/output terminal and the 4th input/output terminal of PFC on-off circuits are connected respectively to the second output end of the signal output part of PFC drive circuits, PFC low reference voltages end, PFC ends and adaptive circuit；The level signal that PFC on-off circuits input according to its 4th input/output terminal, the function of the power switch pipe with first switch speed and the first saturation voltage drop is realized, or realize the function of the power switch pipe with second switch speed and the second saturation voltage drop；Adaptive circuit exports the enable signal of corresponding level by its first output end according to the size of the input signal of its input, and realizes by its second output end output control PFC on-off circuit the level signal of the power switch pipe of corresponding function.
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 structure of existing Intelligent power module circuit as shown in figure 1, MTRIP ports as current detecting end, with basis
The size of current detected is protected to SPM 100.PFC of the PFCIN ports as SPM
(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 (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) pipe 127 is continuously in switch shape
State and FRD pipes 131 are continuously in freewheeling state, the frequency is generally LIN1~LIN3, the 2~4 of HIN1~HIN3 switching frequencies
Times, 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
Voltage noise and FRD (Fast RecoveryDiode, fast recovery diode) 111~FRD of pipe pipes 116, FRD pipes during pass
Current noise during 131 afterflow can all be intercoupled, and the input pin of each low-voltage area is impacted.
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 the conducting velocity correlation of reverse recovery current and IGBT pipes, when
The conducting speed of IGBT pipes more snapback's recovery time is longer, therefore in the higher occasion of IGBT switching speed requirements, MTRIP quilts
The probability of triggering is increasing.As shown in figure 5, when IGBT slope tf when opening is smaller, FRD Reverse recovery effect is drawn
The voltage pulsation risen is not enough to cause MTRIP to trigger, and when IGBT slope tf when opening is larger, MTRIP is triggered, and makes
System stalls.In the case of IGBT switching speed and MTRIP trigger mechanism non-correlations, 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, user pursue energy-conservation and wish PFC continuous firings, if but MTRIP be multiplied by the chance of false triggering,
When MTRIP is by false triggering, air-conditioning system can make user at this section because being mistakenly considered to be stopped 3~5 minutes excessively stream occurs
In can not obtain cold wind, this is to cause air-conditioning system because refrigerating capacity deficiency is by one of the main reason for customer complaint.Meanwhile
Inconsiderate occasion is connected up in some application circuits, if the SPM of current art will not automatically adjust pfc circuit
Working condition, undoubtedly improve SPM use threshold, have impact on the popularization of SPM.
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, can be protected realizing excessively stream
On the premise of shield, the working condition of pfc circuit is adjusted by voluntarily judging the wiring environment of application circuit, to improve intelligent work(
The stability of rate module at work.
It is another object of the present invention to propose a kind of air conditioner with the SPM.
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 under bridge arm signal input part, three-phase on three-phase
End, PFC ends and PFC low reference voltages end；HVIC (High Voltage Integrated Circuit, high voltage integrated circuit)
Pipe, it is provided with the HVIC pipes and is respectively connecting on the three-phase that bridge arm signal is defeated under bridge arm signal input part and the three-phase
Enter the terminals at end, and be connected to the first port at the current detecting end, PFC driving electricity is additionally provided with the HVIC pipes
The signal output part on road；Adaptive circuit, the input of the adaptive circuit is connected to the first port, described adaptive
Enable Pin of first output end of circuit as the HVIC pipes；PFC on-off circuits, the first input of the PFC on-off circuits
Output end, the second input/output terminal, the 3rd input/output terminal and the 4th input/output terminal are connected respectively to the PFC and driven
The signal output part of circuit, the PFC low reference voltages end, the second output end of the PFC ends and the adaptive circuit；Its
In, level signal that the PFC on-off circuits input according to its 4th input/output terminal, realize with first switch speed and the
The function of the power switch pipe of one saturation voltage drop, or realize the power switch pipe with second switch speed and the second saturation voltage drop
Function, the first switch speed is more than the second switch speed, and first saturation voltage drop is more than second saturation
Pressure drop；The adaptive circuit exports corresponding level according to the size of the input signal of its input by its first output end
Enable signal, and realize by PFC on-off circuits described in its second output end output control the power switch pipe of corresponding function
Level signal.
SPM according to an embodiment of the invention, adaptive circuit pass through according to its input (i.e. first end
Mouthful, namely current detecting end) input signal size, the enable signal of corresponding level is exported by its first output end, can
To ensure that SPM realizes overcurrent protection；Meanwhile adaptive circuit passes through the big of the input signal according to its input
It is small, the level signal of the power switch pipe of corresponding function is realized by its second output end output control PFC on-off circuit so that from
Adaptive circuit can determine the wiring environment of application circuit according to the input signal of its input, and control PFC on-off circuits are realized
The function for the power switch pipe that switching speed is very fast and saturation voltage drop is higher realizes that switching speed is relatively low compared with slow and saturation voltage drop
Power switch pipe function, with the switch by adjusting the power switch pipe in pfc circuit (being realized by PFC on-off circuits)
Speed and saturation voltage drop reduce the voltage noise in circuit, it is ensured that the stability of SPM at work.
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 is less than first in the value of the input signal of its input
During setting value, the enable signal of the first level is exported by its first output end, to allow the HVIC pipes to work, and passes through it
Second output end exports the signal of first level；The adaptive circuit be more than in the value of the input signal of its input or
When equal to first setting value and being less than the second setting value, the enabled letter of first level is exported by its first output end
Number, and pass through the signal of its second output end output second electrical level；The input signal of the adaptive circuit in its input
When value is more than or equal to second setting value, the enable signal of the second electrical level is exported by its first output end, to prohibit
The only HVIC pipes work, and pass through the signal of its second output end output second electrical level.
SPM according to an embodiment of the invention, when the value of the input signal of the input of adaptive circuit is small
When the first setting value, illustrate that the current value in the application circuit of SPM is in normal range (NR), therefore can lead to
The signal that the first output end exports the first level is crossed, to allow HVIC pipes to work；Pass through the electricity of the second output end output first simultaneously
Flat signal, so that PFC on-off circuits realize the function for the power switch pipe that switching speed is very fast and saturation voltage drop is higher, to protect
Card system has higher efficiency.
When the value of the input signal of the input of adaptive circuit is more than or equal to the first setting value and less than the second setting
During value, illustrate that the current value in the application circuit of SPM is larger, but still in the scope that need not trigger overcurrent protection
It is interior, therefore the signal of the first level can be exported by the first output end, to ensure that HVIC pipes work on；Pass through second simultaneously
Output end exports the signal of second electrical level, PFC on-off circuits is realized that switching speed is opened compared with slow and relatively low saturation voltage drop power
The function of pipe is closed, and then the interference that voltage noise carries out overcurrent protection to SPM can be reduced, improves intelligent work(
The stability of rate module.
When the value of the input signal of the input of adaptive circuit is more than or equal to the second setting value, illustrate intelligent power
Current value in the application circuit of module has reached the scope of triggering overcurrent protection, therefore can export the by the first output end
The enable signal of two level, to forbid HVIC pipes to work, it is ensured that the security of SPM.
According to one embodiment of present invention, the adaptive circuit includes：
First voltage comparator, the input of the positive input terminal of the first voltage comparator as 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 of NAND gate
The input of input and the first NOT gate, the output end of first NOT gate are connected to the input of the second NOT gate, and described second
Second output end of the output end of NOT gate as the adaptive circuit；Second voltage comparator, the second voltage comparator
Positive input terminal be connected to the positive input terminal of the first voltage comparator, the negative input end connection of the second voltage comparator
To the positive pole of the second voltage source, the negative pole of the second voltage source is connected to the power supply negative pole of the adaptive circuit, institute
The output end for stating second voltage comparator is connected to the second input of the NAND gate, and the output end of the NAND gate is connected to
The input of 3rd NOT gate, the first output end of the output end of the 3rd NOT gate as the adaptive circuit；Wherein, it is described
The power supply positive pole and negative pole of adaptive circuit are connected respectively to the low-pressure area power supply of the SPM
Anode and negative terminal.
According to one embodiment of present invention, the PFC on-off circuits input the first level in its 4th input/output terminal
Signal when, realize the function of the power switch pipe with the first switch speed and first saturation voltage drop；The PFC
On-off circuit is realized with the second switch speed and described in the signal of its 4th input/output terminal input second electrical level
The function of the power switch pipe of second saturation voltage drop.
According to one embodiment of present invention, the PFC on-off circuits include：
First analog switch, the fixing end of first analog switch are defeated as the 3rd input of the PFC on-off circuits
Go out end, the first choice end of first analog switch is connected to the colelctor electrode of the first power switch pipe, and first simulation is opened
The the second selection end closed is connected to the colelctor electrode of the second power switch pipe；Second analog switch, second analog switch are consolidated
Second input/output terminal of the fixed end as the PFC on-off circuits, the first choice end of second analog switch are connected to institute
The emitter stage of the first power switch pipe is stated, the second selection end of second analog switch is connected to second power switch pipe
Emitter stage；Wherein, the control terminal of second analog switch is connected with the control terminal of first analog switch, and is used as institute
State the 4th input/output terminal of PFC on-off circuits；The grid of first power switch pipe and second power switch pipe
Grid is connected, and as the first input/output terminal of the PFC on-off circuits.
Wherein, the first power switch pipe and the second power switch pipe can be IGBT.
According to one embodiment of present invention, in addition to：Boostrap circuit, the boostrap circuit include：First two poles of bootstrapping
Pipe, the anode of first bootstrap diode are connected to the low-pressure area power supply anode of the SPM, and described the
The negative electrode of one bootstrap diode is connected to the U phases higher-pressure region power supply anode of the SPM；Second two poles of bootstrapping
Pipe, the anode of second bootstrap diode are connected to the low-pressure area power supply anode of the SPM, and described the
The negative electrode of two bootstrap diodes is connected to the V phases higher-pressure region power supply anode of the SPM；3rd two poles of bootstrapping
Pipe, the anode of the 3rd bootstrap diode are connected to the low-pressure area power supply anode of the SPM, and described the
The negative electrode of three bootstrap diodes is connected to the W phases higher-pressure region power supply anode of the SPM.
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 circuit in V phases, bridge arm circuit in W phases；Three
Bridge arm circuit includes under phase：Bridge arm circuit under bridge arm circuit, W phases under bridge arm circuit, V phases under U phases.
According to one embodiment of present invention, bridge arm circuit includes in each phase：3rd power switch pipe and first
Diode, the anode of first diode are connected to the emitter stage of the 3rd power switch pipe, first 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 to the intelligence
The high voltage input of power model, the input of the base stage of the 3rd power switch pipe as bridge arm circuit in each phase
End, the emitter stage of the 3rd 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 3rd power switch pipe can be IGBT.
According to one embodiment of present invention, bridge arm circuit includes under each phase：4th power switch pipe and second
Diode, the anode of second diode are connected to the emitter stage of the 4th power switch pipe, second diode
Negative electrode is connected to the colelctor electrode of the 4th power switch pipe, and the colelctor electrode of the 4th power switch pipe is connected on corresponding
The anode of first diode in bridge arm circuit, the base stage of the 4th power switch pipe is as bridge arm under each phase
The input of circuit, the emitter stage of the 4th power switch pipe are joined as the low-voltage of the corresponding phase of the SPM
Examine end.Wherein, the 4th 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 on-off 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 input of adaptive circuit 1105；The power supply of VCC ends connection adaptive circuit 1105 is just
End；GND ends connect the power supply negative terminal of adaptive circuit 1105；First output end of adaptive circuit 1105 is designated as ICON,
For controlling the validity of HIN1~HIN3, LIN1~LIN3, PFCINP signals；Second output end 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 PFC drive circuit output ends, the first input and output with PFC on-off circuits 1127
End is connected；Second input/output terminal of PFC on-off circuits 1127 is connected with the anode of FRD pipes 1117, and is used as intelligent power mould
The PFC low reference voltages end-VP of block 1100；3rd input/output terminal of PFC on-off circuits 1127 and the negative electrode of FRD pipes 1117,
The anode of FRD pipes 1141 is connected, and is opened as the PFC ends of SPM 1100, the PFCC ends connection PFC of HVIC pipes 1101
4th input/output terminal on powered-down road 1127.The power supply anode of PFC on-off circuits 1127 is connected with VCC, PFC on-off circuits
1127 power supply negative terminal is connected with COM.
The negative electrode of FRD pipes 1141, the colelctor electrode of IGBT pipes 1121, the negative electrode of FRD pipes 1111, the current collection of IGBT pipes 1122
Pole, the negative electrode of FRD pipes 1112, the colelctor electrode of IGBT pipes 1123, the negative electrode of FRD pipes 1113 are connected, and are used as SPM
1100 high voltage input P, P typically meets 300V.
The effect of HVIC pipes 1101 is：
When ICON is low 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.I.e. when ICON exports low level, HVIC pipes 1101 are enabled.
When ICON is high level, HO1, HO2, HO3, LO1, LO2, LO3, PFCO are all set to low level.Exist
When ICON exports high level, HVIC pipes 1101 are stopped.
The effect of adaptive circuit 1105 is：
When the real time value for detecting ITRIP is less than a certain magnitude of voltage V1, ICON output low levels, and adaptive electricity
The second output end output low level on road 1105；When the real time value for detecting ITRIP is more than or equal to V1 and it is less than a certain electricity
During pressure value V2, ICON output low levels, and the second output end output high level of adaptive circuit 1105；When detecting
When ITRIP real time value is more than or equal to V2, ICON output high level, and the second output end of adaptive circuit 1105 is defeated
Go out high level；Wherein, V2>V1.
The effect of PFC on-off circuits 1127 is：
When PFCC is low level, PFC on-off circuits 1127 are in the first input/output terminal, the second input/output terminal, the 3rd
Input/output terminal shows as the IGBT pipes that one is opened speed and saturation voltage drop is larger；When PFCC is high level, PFC is opened
Powered-down road 1127 the first input/output terminal, the second input/output terminal, the 3rd input/output terminal show as one open speed compared with
Slowly the less IGBT pipes of saturation voltage drop.
In one embodiment of the invention, the particular circuit configurations of adaptive circuit 1105 are as shown in fig. 7, be specially：
ITRIP connects the positive input terminal of voltage comparator 2010, the positive input terminal of voltage comparator 2014；Voltage comparator
The anode of 2010 negative input termination voltage source 2018；The negative terminal of voltage source 2018 meets GND；The negative input of voltage comparator 2014
The anode in termination voltage source 2019；The negative terminal of voltage source 2019 meets GND；The output termination NAND gate 2011 of voltage comparator 2010
One of input and NOT gate 2012 input；The input of the output termination NOT gate 2013 of NOT gate 2012；NOT gate
2013 output end is the second output end of adaptive circuit 1105.
Another input of the output termination NAND gate 2011 of voltage comparator 2014；The output termination of NAND gate 2011
The input of NOT gate 2016；The output end of NOT gate 2016 is the ICON ends of adaptive circuit 1105.
In one embodiment of the invention, the particular circuit configurations of PFC on-off circuits 1127 are as shown in figure 8, be specially：
The control terminal and analog switch 2004 of the 4th input/output terminal connection analog switch 2003 of PFC on-off circuits 1127
Control terminal；The fixing end of analog switch 2003 is the 3rd input/output terminal of PFC on-off circuits 1127；Analog switch 2004
Fixing end be PFC on-off circuits 1127 the second input/output terminal；1 selection termination IGBT pipes 2001 of analog switch 2003
Colelctor electrode；The colelctor electrode of 0 selection termination IGBT pipes 2002 of analog switch 2003；1 selection termination of analog switch 2004
The emitter-base bandgap grading of IGBT pipes 2001；The emitter-base bandgap grading of 0 selection termination IGBT pipes 2002 of analog switch 2004；The of PFC on-off circuits 1127
The grid of one input and output termination IGBT pipes 2001 and the grid of IGBT pipes 2002.
Illustrate the operation principle and key parameter value of above-described embodiment below：Voltage source 2018 is it is contemplated that 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, SPM proposed by the present invention is in real work it is possible that following
Situation：
Situation 1：When ITRIP voltages<During 0.5V, voltage comparator 2010 exports low level, so as to adaptive circuit 1105
The second output end output low level, and NAND gate 2011 export high level, so as to NOT gate 2016 export low level make ICON
Export low level.Because the first of the second output end the output low level, now PFC on-off circuits 1127 of adaptive circuit 1105
Input/output terminal is connected with the negative electrode of PFC pipes 2002, the second input/output terminal and the PFC pipes 2002 of PFC on-off circuits 1127
Anode is connected.
Situation 2：As ITRIP voltages >=0.6V, voltage comparator 2010 exports high level, and voltage comparator 2014
High level is exported, NAND gate 2011 exports low level, ICON is exported high level, intelligent work(so as to which NOT gate 2016 exports high level
Rate module 1100 is stopped into guard mode.
Situation 3：When 0.5V≤ITIRP voltages<During 0.6V, voltage comparator 2010 exports high level, so as to adaptive electricity
The second output end output high level on road 1105；And voltage comparator 2014 exports low level, the output end of NAND gate 2011
High level, ICON is set to export low level so as to which NOT gate 2016 exports low level；Because the second output end of adaptive circuit 1105
High level is exported, now the first input/output terminal of PFC on-off circuits 1127 is connected with the negative electrode of PFC pipes 2001, PFC switch electricity
Second input/output terminal on road 1127 is connected with the anode of PFC pipes 2001.
Under same process, by adjusting the modes such as dopant concentration, regulation IGBT pipes open the pass of speed and saturation voltage drop
System, obtains IGBT pipes 2001 and IGBT pipes 2002, and IGBT pipes 2001 select to open speed compared with slow but relatively low saturation voltage drop IGBT
Pipe, IGBT pipes 2002 select open speed but saturation voltage drop it is higher IGBT pipe.Usually, when opening of IGBT pipes 2001
Between (electric current rise, voltage falling time) selection hundred nanoseconds rank, the service time of IGBT pipes 2002, (electric current rose, under voltage
Drop the time) selection ten nanosecond rank.
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.ITRIP first with relatively low voltage ratio compared with, it is ensured that
To on the premise of the sensitivity of SPM overcurrent protection, by adjusting the switching speed of IGBT in pfc circuit (by making
PFC on-off circuits 1127 realize the power switch pipe of corresponding function to realize) reduce voltage noise and take into account SPM work
The stability of work；And when ITRIP is higher than a higher voltage, to ensure that the safety of SPM stops intelligent work(
Rate module works；So that the SPM of the present invention on the premise of normal protective mechanisms persistently come into force, maintains and is
The stability of system, availability, robustness, the user satisfaction of product is improved, reduce product and complain.
Technical scheme is described in detail above in association with accompanying drawing, the present invention proposes a kind of new intelligent power mould
Block, the work of pfc circuit can be adjusted by voluntarily judging the wiring environment of application circuit on the premise of overcurrent protection is realized
Make state, to improve the stability of SPM at work.
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 (10)
- A kind of 1. SPM, it is characterised in that including：Bridge arm signal input part, three-phase low reference voltage end, current detecting end, PFC under bridge arm signal input part, three-phase on three-phase End and PFC low reference voltages end；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 at the current detecting end is connected to, it is additionally provided with the HVIC pipes The signal output part of PFC drive circuits；Adaptive circuit, the input of the adaptive circuit are connected to the first port, and the first of the adaptive circuit Enable Pin of the output end as the HVIC pipes；PFC on-off circuits, the first input/output terminal, the second input/output terminal, the 3rd input/output terminal of the PFC on-off circuits It is connected respectively with the 4th input/output terminal to the signal output part of the PFC drive circuits, the PFC low reference voltages Second output end at end, the PFC ends and the adaptive circuit；Wherein, the level signal that the PFC on-off circuits input according to its 4th input/output terminal, realizing has first switch speed The function of the power switch pipe of degree and the first saturation voltage drop, or realize the power with second switch speed and the second saturation voltage drop The function of switching tube, the first switch speed are more than the second switch speed, and first saturation voltage drop is more than described the Two saturation voltage drops；The adaptive circuit exports phase according to the size of the input signal of its input by its first output end The enable signal of level is answered, and the power of corresponding function is realized by PFC on-off circuits described in its second output end output control The level signal of switching tube.
- 2. SPM according to claim 1, it is characterised in that：The adaptive circuit is defeated by its first output end when the value of the input signal of its input is less than the first setting value Go out the enable signal of the first level, to allow the HVIC pipes to work, and first level is exported by its second output end Signal；The adaptive circuit is more than or equal to first setting value and less than second in the value of the input signal of its input During setting value, the enable signal of first level is exported by its first output end, and pass through its second output end output the The signal of two level；The adaptive circuit when the value of the input signal of its input is more than or equal to second setting value, by its One output end exports the enable signal of the second electrical level, to forbid the HVIC pipes to work, and it is defeated by its second output end Go out the signal of the second electrical level.
- 3. SPM according to claim 1, it is characterised in that the adaptive circuit includes：First voltage comparator, the input of the positive input terminal of the first voltage comparator as the adaptive circuit, institute The negative input end for stating first voltage comparator is connected to the positive pole of first voltage source, and the negative pole of the first voltage source is connected to institute The power supply negative pole of adaptive circuit is stated, the output end of the first voltage comparator is connected to the first input end of NAND gate With the input of the first NOT gate, the output end of first NOT gate is connected to the input of the second NOT gate, second NOT gate Second output end of the output end as the adaptive circuit；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 The power supply negative pole of the adaptive circuit is connected to, the output end of the second voltage comparator is connected to the NAND gate The second input, the output end of the NAND gate is connected to the input of the 3rd NOT gate, and the output end of the 3rd NOT gate is made For the first output end of the adaptive circuit；Wherein, the power supply positive pole of the adaptive circuit and negative pole are connected respectively low to the SPM Nip power supply anode and negative terminal.
- 4. SPM according to claim 1, it is characterised in that：For the PFC on-off circuits when its 4th input/output terminal inputs the signal of the first level, realizing has described first to open Close the function of the power switch pipe of speed and first saturation voltage drop；For the PFC on-off circuits in the signal of its 4th input/output terminal input second electrical level, realizing has described second to open Close the function of the power switch pipe of speed and second saturation voltage drop.
- 5. SPM according to claim 1, it is characterised in that the PFC on-off circuits include：First analog switch, the 3rd input/output terminal of the fixing end of first analog switch as the PFC on-off circuits, The first choice end of first analog switch is connected to the colelctor electrode of the first power switch pipe, and the of first analog switch Two selection ends are connected to the colelctor electrode of the second power switch pipe；Second analog switch, the second input/output terminal of the fixing end of second analog switch as the PFC on-off circuits, The first choice end of second analog switch is connected to the emitter stage of first power switch pipe, second analog switch The second selection end be connected to the emitter stage of second power switch pipe；Wherein, the control terminal of second analog switch is connected with the control terminal of first analog switch, and is used as the PFC 4th input/output terminal of on-off circuit；The grid phase of the grid of first power switch pipe and second power switch pipe Even, and as the first input/output terminal of the PFC on-off circuits.
- 6. SPM according to any one of claim 1 to 5, it is characterised in that also include：Boostrap circuit, The boostrap circuit includes：First bootstrap diode, the anode of first bootstrap diode are connected to the low-pressure area power supply of the SPM Power positive end, the negative electrode of first bootstrap diode are being connected to the U phases higher-pressure region power supply of the SPM just End；Second bootstrap diode, the anode of second bootstrap diode are connected to the low-pressure area power supply of the SPM Power positive end, the negative electrode of second bootstrap diode are being connected to the V phases higher-pressure region power supply of the SPM just End；3rd bootstrap diode, the anode of the 3rd bootstrap diode are connected to the low-pressure area power supply of the SPM Power positive end, the negative electrode of the 3rd bootstrap diode are being connected to the W phases higher-pressure region power supply of the SPM just End.
- 7. SPM according to any one of claim 1 to 5, 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.
- 8. SPM according to claim 7, it is characterised in that bridge arm circuit includes in each phase：3rd power switch pipe and the first diode, the anode of first diode are connected to the 3rd power switch pipe Emitter stage, the negative electrode of first 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 high voltage input of the SPM, and the base stage of the 3rd power switch pipe is as institute The input of bridge arm circuit in each phase is stated, the emitter stage of the 3rd power switch pipe is connected to the SPM pair Answer the higher-pressure region power supply negative terminal of phase.
- 9. SPM according to claim 8, it is characterised in that bridge arm circuit includes under each phase：4th power switch pipe and the second diode, the anode of second diode are connected to the 4th power switch pipe Emitter stage, the negative electrode of second diode are connected to the colelctor electrode of the 4th power switch pipe, the 4th power switch The colelctor electrode of pipe is connected to the anode of first diode in corresponding upper bridge arm circuit, the 4th power switch pipe Input of the base stage as bridge arm circuit under each phase, the emitter stage of the 4th power switch pipe is as the intelligent work( The low reference voltage end of the corresponding phase of rate module.
- A kind of 10. air conditioner, it is characterised in that including：SPM as claimed in any one of claims 1-9 wherein.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374680.2A CN105790565B (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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374680.2A CN105790565B (en) | 2016-05-30 | 2016-05-30 | SPM and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN105790565A CN105790565A (en) | 2016-07-20 |
| CN105790565B true CN105790565B (en) | 2017-11-24 |
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| CN201610374680.2A Expired - Fee Related CN105790565B (en) | 2016-05-30 | 2016-05-30 | SPM and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017206385A1 (en) * | 2016-05-30 | 2017-12-07 | 广东美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN110601602B (en) * | 2018-06-13 | 2024-11-29 | 重庆美的制冷设备有限公司 | Driving IC circuit of intelligent power module, intelligent power module and air conditioner |
| CN114063551B (en) * | 2021-11-01 | 2024-02-06 | 上海美控智慧建筑有限公司 | Input/output control circuit, controller and air conditioner |
| CN114172351B (en) * | 2021-12-21 | 2024-11-01 | 广东汇芯半导体有限公司 | Semiconductor circuit with hysteresis function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7715698B2 (en) * | 2005-08-31 | 2010-05-11 | Thor Power Corporation | Control electronics for brushless motors |
| CN105322822B (en) * | 2015-11-30 | 2017-12-19 | 重庆美的制冷设备有限公司 | SPM and air conditioner |
| CN105577017B (en) * | 2016-03-04 | 2017-12-19 | 广东美的制冷设备有限公司 | SPM and air conditioner |
| CN105515429B (en) * | 2015-11-30 | 2018-06-29 | 重庆美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN205792230U (en) * | 2016-05-30 | 2016-12-07 | 广东美的制冷设备有限公司 | SPM and air-conditioner |
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