CN105763090B - SPM and air conditioner - Google Patents
SPM and air conditioner Download PDFInfo
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- CN105763090B CN105763090B CN201610126212.3A CN201610126212A CN105763090B CN 105763090 B CN105763090 B CN 105763090B CN 201610126212 A CN201610126212 A CN 201610126212A CN 105763090 B CN105763090 B CN 105763090B
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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
- 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 input of adaptive circuit is connected to first port, Enable Pin of first output end as HVIC pipes；The input of PFC freewheeling circuits, the first input/output terminal, the second input/output terminal are respectively connecting to the second output end of adaptive circuit, PFC ends and IPM high voltage input, the level signal that PFC freewheeling circuits input according to its input, realize that forward conduction voltage drop is less than the function of the fly-wheel diode of scheduled duration less than the fly-wheel diode or Reverse recovery duration of predetermined pressure drop value；Adaptive circuit is when IPM temperature is less than predetermined temperature value, the signal of the first level is exported by the second output end, and enable signal is exported according to the input signal of its input, and when IPM temperature is higher than predetermined temperature value, the signal of second electrical level is exported by the second output end, and enable signal is exported according to the input signal of its input.
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.
Managed for the FRD of special process, forward conduction voltage drop is that inverse proportion closes with reverse recovery time/reverse recovery current
System, forward conduction voltage drop bigger reverse recovery time/reverse recovery current is smaller, during the smaller Reverse recovery of forward conduction voltage drop
Between/reverse recovery current is bigger.Usually, PFC switching frequency is fixed, and frequency is between 20kHz~40kHz, for this
The application scenario of kind low frequency, influence of the reverse recovery current size to power consumption are less than influence of the forward conduction voltage drop to power consumption, lead to
The FRD pipes that forward conduction voltage drop is relatively low can be often selected, obtain relatively low conduction loss.But in fact, because of the reverse of FRD pipes
Recovery time and reverse recovery current are positive temperature coefficients, and temperature is higher, and reverse recovery time is longer, therefore holding with system
Continuous work, the constant temperature of SPM 100 rise, and the probability that MTRIP is triggered is increasing.As shown in figure 5,25
At DEG C, voltage pulsation caused by FRD Reverse recovery effect is not enough to cause MTRIP to trigger, and as temperature raises, at 75 DEG C
When, MTRIP is triggered, and makes system stalls.Although this false triggering can recover without to system shape over time
Into destruction, but undoubtedly user can be caused to perplex.Such as the application scenario of transducer air conditioning, higher environment temperature is exactly user
When more needing air-conditioning system continuous firing, but high environment temperature can increase the reverse recovery time of FRD pipes, MTRIP
Probability by false triggering improves, once MTRIP, by false triggering, air-conditioning system can be because being mistakenly considered to be stopped 3~5 excessively stream occurs
Minute, user can not be during this period of time obtained cold wind, this is to cause air-conditioning system because refrigerating capacity deficiency is by customer complaint
One of the main reason for.
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 Integrated Circuit, high voltage integrated circuit) is managed, and is provided with the HVIC pipes point
The terminals of bridge arm signal input part under bridge arm signal input part and the three-phase on the three-phase are not connected to, and are corresponded to
The first port at the current detecting end, the first port are connected by connecting line with the current detecting end；Sampling resistor,
The three-phase low reference voltage end and the current detecting end are connected to the first end of the sampling resistor, the sampling resistor
The second end be connected to the low-pressure area power supply negative terminal of the SPM；Adaptive circuit, the adaptive circuit
Input be connected to the first port, the Enable Pin of the first output end of the adaptive circuit as the HVIC pipes；
PFC freewheeling circuits, the input of the PFC freewheeling circuits are connected to the second output end of the adaptive circuit, and the PFC continues
First input/output terminal of current circuit is connected to the PFC ends, and the second input/output terminal of the PFC freewheeling circuits is connected to institute
The high voltage input of SPM is stated, the PFC freewheeling circuits input according to the input of the PFC freewheeling circuits
Level signal, realize function of the forward conduction voltage drop less than the fly-wheel diode of predetermined pressure drop value or realize that Reverse recovery duration is low
In the function of the fly-wheel diode of scheduled duration；
Wherein, the adaptive circuit is when the temperature of the SPM is less than predetermined temperature value, by described
Second output end exports the signal of the first level, and the value and first of the input signal according to the input of the adaptive circuit
Magnitude relationship between setting value exports the enable signal of corresponding level by first output end；The adaptive circuit exists
When the temperature of the SPM is higher than the predetermined temperature value, the letter of second electrical level is exported by second output end
Number, and institute is passed through according to the magnitude relationship between the value and the second setting value of the input signal of the input of the adaptive circuit
The enable signal that the first output end exports corresponding level is stated, second setting value is more than first setting value.
SPM according to an embodiment of the invention, it is less than predetermined temperature value in the temperature of SPM
When, pass through the value and first of the input signal of the input (i.e. first port, namely current detecting end) according to adaptive circuit
Magnitude relationship between setting value exports the enable signal of corresponding level so that when the temperature of SPM is relatively low, from
Adaptive circuit can make a response according to the signal value that current detecting end detects, i.e., the signal value that current detecting end detects
When larger, enable signal that timely output control HVIC pipes are stopped is defeated when the signal value that current detecting end detects is smaller
The enable signal for going out to control HVIC pipes to work, to ensure that SPM can under normal temperature (when i.e. less than predetermined temperature value)
Normal work, and carry out overcurrent protection.
When the temperature of SPM is higher than predetermined temperature value, pass through the value of the input signal according to input and
Magnitude relationship between two setting values exports the enable signal of corresponding level so that when the temperature of SPM is higher,
Standard can be used as to determine whether that output control HVIC pipes stop (compared to the first setting value) by the second larger setting value
The enable signal only to work, and then can effectively reduce when SPM works at high temperature by the probability of false triggering.
PFC freewheeling circuits realize forward conduction voltage drop by the level signal inputted according to the input of PFC freewheeling circuits
Less than the fly-wheel diode of predetermined pressure drop value function or realize the fly-wheel diode of Reverse recovery duration less than scheduled duration
Function so that when the temperature of SPM is less than predetermined temperature value, it is possible to achieve forward conduction voltage drop is less than pre- level pressure
The function of the fly-wheel diode of depreciation, to reduce power consumption when SPM works at normal temperatures；Simultaneously can be in intelligence
When the temperature of power model is higher than predetermined temperature value, it is possible to achieve Reverse recovery duration is less than the fly-wheel diode of scheduled duration
Function, with reduce SPM temperature it is higher caused by circuit noise, to reduce SPM at high temperature
By the probability of false triggering during 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 predetermined in the temperature of the SPM
During temperature value, if the value of the input signal of the input of the adaptive circuit is more than or equal to first setting value, lead to
The enable signal that first output end exports first level is crossed, to forbid the HVIC pipes to work；Otherwise, by described
First output end exports the enable signal of the second electrical level, to allow the HVIC pipes to work；
The adaptive circuit is when the temperature of the SPM is higher than the predetermined temperature value, if described adaptive
Answer the value of the input signal of the input of circuit to be more than or equal to second setting value, then exported by first output end
The enable signal of first level；Otherwise, the enable signal of the second electrical level is exported by first output end.
According to one embodiment of present invention, the adaptive circuit includes：
First resistor, the first end of the first resistor is connected to the power supply positive pole of the adaptive circuit, described
Second end of first resistor is connected to the negative electrode of voltage-regulator diode, and the anode of the voltage-regulator diode is connected to the adaptive electricity
The power supply negative pole on road, the power supply positive pole and negative pole of the adaptive circuit 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, the second resistance
The second end be connected to the positive input terminal of first 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；
First voltage source, the negative pole of the first voltage source are connected to the anode of the voltage-regulator diode, first electricity
The positive pole of potential source is connected to the negative input end of the first voltage comparator, and the output end of the first voltage comparator is connected to
The input of first NOT gate, the output end of first NOT gate are connected to the input of the second NOT gate, second NOT gate it is defeated
Go out the control terminal that end is connected to the first analog switch, and as the second output end of the adaptive circuit；
Second voltage comparator, the input of the positive input terminal of the second voltage comparator as the adaptive circuit
End, the negative input end of the second voltage comparator are connected to the positive pole of the second voltage source, and the negative pole of the second voltage source connects
The power supply negative pole of the adaptive circuit is connected to, the output end of the second voltage comparator is connected to first simulation
The first choice end of switch and the first input end of the first NAND gate；
Tertiary voltage comparator, the positive input terminal of the tertiary voltage comparator are connected to the second voltage comparator
Positive input terminal, the negative input end of the tertiary voltage comparator are connected to the positive pole in tertiary voltage source, the tertiary voltage source
Negative pole is connected to the power supply negative pole of the adaptive circuit, and the output end of the tertiary 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 3rd NOT gate, and the described 3rd is non-
The output end of door is connected to the second selection end of first analog switch, and the fixing end of first analog switch is connected to the
The input of four NOT gates, the first output end of the output end of the 4th NOT gate as the adaptive circuit.
According to one embodiment of present invention, the PFC freewheeling circuits include two fly-wheel diodes；The PFC afterflows
Circuit selects described two fly-wheel diodes when the input of the PFC freewheeling circuits inputs the signal of first level
The relatively low fly-wheel diode access circuit of middle forward conduction voltage drop；Input of the PFC freewheeling circuits in the PFC freewheeling circuits
When end inputs the signal of the second electrical level, the pole of afterflow two that reverse recovery time in described two fly-wheel diodes is shorter is selected
Pipe accesses circuit.
According to one embodiment of present invention, the PFC freewheeling circuits include：Second analog switch, second simulation
First input/output terminal of the fixing end of switch as the PFC freewheeling circuits, the first choice end of second analog switch
The negative electrode of the first fly-wheel diode is connected to, the second selection end of second analog switch is connected to the second fly-wheel diode
Negative electrode；3rd analog switch, the second input and output of the fixing end of the 3rd analog switch as the PFC freewheeling circuits
End, the first choice end of the 3rd analog switch are connected to the anode of first fly-wheel diode, and the 3rd simulation is opened
The the second selection end closed is connected to the anode of second fly-wheel diode；Wherein, the control terminal of the 3rd analog switch with
The control terminal of second analog switch is connected, and as the input of the PFC freewheeling circuits.
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 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：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 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, are connected with the grid of IGBT pipes 1127；IGBT is managed
1127 emitter-base bandgap grading is connected with the anode of FRD pipes 1117, and as the PFC low reference voltages end-VP of SPM 1100；
The colelctor electrode of IGBT pipes 1127 and the negative electrode of FRD pipes 1117, the first input/output terminal phase of adaptive PFC freewheeling circuits 1141
Even, and as the PFC ends of SPM 1100, PFCC ends the input of adaptive PFC freewheeling circuits 1141 is connected.
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 circuit 1105 is：
When temperature is less than a certain particular temperature value T1, PFCC output low levels, and if ITRIP real time value be more than
A certain particular voltage level V1, then ICON export low level, otherwise ICON export high level；
When temperature is higher than a certain particular temperature value T1, PFCC output high level, and if ITRIP real time value be more than
A certain particular voltage level V2, then ICON export low level, otherwise ICON export high level；Wherein, V2>V1.
The effect of adaptive PFC freewheeling circuits 1141 is：
When PFCC is low level, adaptive PFC freewheeling circuits 1141 are that a forward conduction voltage drop is very low and reverse extensive
Slower FRD pipes of multiple time；
When PFCC is high level, adaptive PFC freewheeling circuits 1141 are that a forward conduction voltage drop is higher and reverse extensive
The FRD pipes of multiple time quickly.
In one embodiment of the invention, the particular circuit configurations of adaptive circuit 1105 are as shown in fig. 7, 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；
Another input of the output termination NOT gate 2017 of voltage comparator 2015；The input of the output termination NOT gate 2027 of NOT gate 2017
End；The control terminal of the output termination analog switch 2022 of NOT gate 2027 and as the second output end of adaptive circuit 1105, i.e.,
PFCC ends；
ITRIP connects the positive input terminal of voltage comparator 2010, the positive input terminal of voltage comparator 2023；Voltage comparator
The anode of 2010 negative input termination voltage source 2018；The negative terminal of voltage source 2018 meets 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 termination of NAND gate 2025
The input of NOT gate 2026；1 selection end of the output termination analog switch 2022 of NOT gate 2026；The fixing end of analog switch 2022
Connect the input of NOT gate 2020；The output end of NOT gate 2020 is as ICON.
In one embodiment of the invention, the particular circuit configurations of PFC freewheeling circuits 1141 are as shown in figure 8, be specially：
The control terminal of input connection analog switch 2003 of PFC freewheeling circuits 1141 and the control of analog switch 2004
End；The fixing end of analog switch 2003 is the first input/output terminal of PFC freewheeling circuits 1141；The fixation of analog switch 2004
End is the second input/output terminal of PFC freewheeling circuits 1141；
The negative electrode of 1 selection termination FRD pipes 2001 of analog switch 2003；0 selection termination FRD ends of analog switch 2003
2002 negative electrode；The anode at 1 selection termination FRD ends 2001 of analog switch 2004；0 selection termination FRD of analog switch 2004
The anode of pipe 2002.
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 designed as 10k Ω at 25 DEG C, 20k at 100 DEG C
Ω；Resistance 2013 is designed as 44k Ω, and voltage source 2014 is designed as 2V, then below 100 DEG C, voltage comparator 2015 exports low
Level, more than 100 DEG C, voltage comparator 2015 exports high level.
When being more than 100 DEG C so as to and if only if temperature, NOT gate 2027 exports high level, and otherwise NOT gate 2027 exports low electricity
It is flat.
Voltage source 2018 is designed as 0.5V, and voltage source 2019 is designed as 0.6V；
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；Also, now
First input/output terminal of PFC freewheeling circuits 1141 is connected with the negative electrode of PFC pipes 2002, and the second of PFC freewheeling circuits 1141 is defeated
The anode for entering output end with PFC pipes 2002 is connected；
When NOT gate 2027 exports high level, ITRIP simultaneously with 0.5V, 0.6V voltage ratio compared with because voltage is being incremented by,
ITRIP voltage reaches 0.5V, it is necessary to which persistently rising a period of time can be only achieved 0.6V, therefore, even if ITRIP voltage>
0.5V, also to continue for some time, which can just make voltage comparator 2010, voltage comparator 2023 all export high level, makes NAND gate
2025 output low levels, this duration is depending on the ITRIP rate of rise；Also, now the of PFC freewheeling circuits 1141
One input/output terminal is connected with the negative electrode of PFC pipes 2001, the second input/output terminal and the PFC pipes 2001 of PFC freewheeling circuits 1141
Anode be connected.
4 times of the minimum dimension that NAND gate 2025 and the taking technique of NOT gate 2026 allow, can produce 60~100ns delay,
So as to add response times of the ICON to ITRIP.
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 reverse recovery time shorter FRD pipes, FRD pipes 2002 may be selected in FRD pipes 2001
Select the less FRD pipes of forward conduction voltage drop.
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 is relatively low, ITRIP and relatively low electricity
Pressure ratio compared with, it is ensured that to the sensitivity of SPM overcurrent protection, when temperature is higher, ITRIP and higher voltage
Compare, take into account the stability of SPM work；Also, when temperature is relatively low, pfc circuit uses forward conduction voltage drop more
Low FRD pipes obtain lower power consumption, and when temperature is higher, PFC reduces circuit using reverse recovery time shorter FRD pipes
Voltage noise；So that the SPM of the present invention maintains system on the premise of normal protective mechanisms persistently come into force
Stability, while improve 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 (8)
- 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 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 freewheeling circuits, the input of the PFC freewheeling circuits is connected to the second output end of the adaptive circuit, described First input/output terminal of PFC freewheeling circuits is connected to the PFC ends, and the second input/output terminal of the PFC freewheeling circuits connects It is connected to the high voltage input of the SPM, the PFC freewheeling circuits are according to the inputs of the PFC freewheeling circuits The level signal of input, realize function of the forward conduction voltage drop less than the fly-wheel diode of predetermined pressure drop value or realize Reverse recovery Function of the duration less than the fly-wheel diode of scheduled duration；Wherein, the adaptive circuit passes through described second when the temperature of the SPM is less than predetermined temperature value Output end exports the signal of the first level, and is set according to the value of the input signal of the input of the adaptive circuit with first Magnitude relationship between value exports the enable signal of corresponding level by first output end；The adaptive circuit is described When the temperature of SPM is higher than the predetermined temperature value, the signal of second electrical level is exported by second output end, And passed through according to the magnitude relationship between the value and the second setting value of the input signal of the input of the adaptive circuit described First output end exports the enable signal of corresponding level, and second setting value is more than first setting value；The adaptive circuit is when the temperature of the SPM is less than predetermined temperature value, if the adaptive circuit The value of the input signal of input is more than or equal to first setting value, then exports described first by first output end The enable signal of level, to forbid the HVIC pipes to work；Otherwise, the second electrical level is exported by first output end Enable signal, to allow the HVIC pipes to work；The adaptive circuit is when the temperature of the SPM is higher than the predetermined temperature value, if the adaptive electricity The value of the input signal of the input on road is more than or equal to second setting value, then by described in first output end output The enable signal of first level；Otherwise, the enable signal of the second electrical level is exported by first output end；The PFC freewheeling circuits include two fly-wheel diodes；The PFC freewheeling circuits are when the input of the PFC freewheeling circuits inputs the signal of first level, described in selection The fly-wheel diode access circuit that forward conduction voltage drop is relatively low in two fly-wheel diodes；The PFC freewheeling circuits are when the input of the PFC freewheeling circuits inputs the signal of the second electrical level, described in selection In two fly-wheel diodes reverse recovery time it is shorter fly-wheel diode access circuit.
- 2. SPM according to claim 1, it is characterised in that the adaptive circuit includes：First resistor, the first end of the first resistor are connected to the power supply positive pole of the adaptive circuit, 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 adaptive circuit Power supply negative pole, the power supply positive pole and negative pole of the adaptive circuit are respectively connecting to the low of the SPM Nip 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 first 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；First voltage source, the negative pole of the first voltage source are connected to the anode of the voltage-regulator diode, the first voltage source Positive pole be connected to the negative input end of the first voltage comparator, the output end of the first voltage comparator is connected to first The input of NOT gate, the output end of first NOT gate are connected to the input of the second NOT gate, the output end of second NOT gate The control terminal of the first analog switch is connected to, and as the second output end of the adaptive circuit；Second voltage comparator, the input of the positive input terminal of the second voltage comparator as the adaptive circuit, institute The negative input end for stating second voltage comparator is connected to the positive pole of the second voltage source, and the negative pole of the second voltage source is connected to institute The power supply negative pole of adaptive circuit is stated, the output end of the second voltage comparator is connected to first analog switch First choice end and the first input end of the first NAND gate；Tertiary voltage comparator, the positive input terminal of the tertiary voltage comparator are connected to the just defeated of the second voltage comparator Enter end, the negative input end of the tertiary voltage comparator is connected to the positive pole in tertiary voltage source, the negative pole in the tertiary voltage source Be connected to the power supply negative pole of the adaptive circuit, the output end of the tertiary 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 3rd NOT gate, the 3rd NOT gate Output end is connected to the second selection end of first analog switch, and it is non-that the fixing end of first analog switch is connected to the 4th The input of door, the first output end of the output end of the 4th NOT gate as the adaptive circuit.
- 3. SPM according to claim 1, it is characterised in that the PFC freewheeling circuits include：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；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；Wherein, the control terminal of the 3rd analog switch is connected with the control terminal of second analog switch, and is used as the PFC The input of freewheeling circuit.
- 4. 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.
- 5. SPM according to any one of claim 1 to 4, 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.
- 6. SPM according to claim 5, 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.
- 7. SPM according to claim 6, 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 8. air conditioner, it is characterised in that including：SPM as any one of claim 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126212.3A CN105763090B (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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| CN201610126212.3A CN105763090B (en) | 2016-03-04 | 2016-03-04 | SPM and air conditioner |
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| CN105763090B true CN105763090B (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 |
| CN205453540U (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 |
| CN205453540U (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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