CN103516228A - Power conversion module of inverter air conditioner - Google Patents
Power conversion module of inverter air conditioner Download PDFInfo
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- CN103516228A CN103516228A CN201210202569.7A CN201210202569A CN103516228A CN 103516228 A CN103516228 A CN 103516228A CN 201210202569 A CN201210202569 A CN 201210202569A CN 103516228 A CN103516228 A CN 103516228A
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Abstract
The invention provides a power conversion module of an inverter air conditioner. The power conversion module comprises: a first input pin for connecting a DC input power supply, a first output pin for connecting a motor, a staggered-type power factor correction unit and a three-phase inversion unit, wherein the staggered-type power factor correction unit is connected between the first input pin and the three-phase inversion unit and used for adjusting power factors of the power conversion module; the three-phase inversion unit is connected between the staggered-type power factor correction unit and the first output pin and used for converting an input power supply into a three-phase power supply for motor frequency control and speed adjustment; and the staggered-type power factor correction unit and the three-phase inversion unit are packaged in the same housing. By adopting the technical scheme in the invention, the integration level of power devices is high; the cost of a printed circuit board is reduced; the production procedures are reduced; the process problem of the same radiating surface required by the power devices is solved; and the reliability of a power conversion circuit is improved.
Description
Technical field
The present invention relates to field of power electronics, in particular to a kind of power conversion module of transducer air conditioning.
Background technology
At present, in domestic variable frequency air conditioner, the effect of power conversion circuit is that industrial-frequency alternating current is carried out to rectification, inversion and power factor correction (Power Factor Correction, PFC) etc. a series of processes, are converted to the adjustable three-phase alternating current of frequency and take to providing power supply as frequency control motor.
Power conversion circuit of the prior art is all generally that discrete device is built on circuit board, adopt and form in this way power conversion circuit, can be according to the feature of transducer air conditioning, power conversion is designed flexibly, but owing to particularly needing a large amount of power devices in power factor correction unit in power conversion circuit, as rectifying tube, power transistor, continued flow tube etc., general power device all can send a large amount of heats when work, and the overheated normal operation that can endanger circuit, even there is potential safety hazard, so existing power conversion circuit need to arrange radiator for power device, the mode that in production process, a plurality of power devices are fixed by screws on radiator arranges.
There is following shortcoming in the connected mode of above-mentioned radiator and power device:
1, owing to having increased radiator and the relevant technological process of production, improved production cost.
2, a plurality of power devices that are welded on printed circuit board are fixed on radiator, when assembling, require the radiating surface of above-mentioned device to keep having increased explained hereafter difficulty on same plane, if there is deviation, can cause above-mentioned device to be subject to effect of stress, thereby reduce the reliability of circuit working.
3, due to the restriction of device outline packages and electric appliance box body mechanism, cause between power device pin and connect by longer cabling, long cabling causes stray inductance, the electric capacity on circuit to increase, thereby the current signal changing at a high speed produces larger noise voltage on these circuits.The spike of noise voltage is had higher requirement to the withstand voltage of power device, and this noise voltage is also larger interference source simultaneously, is diffused in whole controller circuitry, need to improve the antijamming capability of power conversion circuit control system.
For the low problem of the power conversion circuit reliability of the transducer air conditioning of being built by discrete power device in prior art, effective solution is not yet proposed at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of power conversion module of transducer air conditioning, to solve the low problem of power conversion circuit reliability of the transducer air conditioning of being built by discrete power device in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of power conversion module of transducer air conditioning.
The power conversion module of transducer air conditioning provided by the invention comprises: for connecting the first input pin of direct-current input power supplying, for connecting the first output pin, the alternating expression power factor correction unit of motor, with three-phase inversion unit, wherein, alternating expression power factor correction unit, be connected between the first input pin and three-phase inversion unit, for the power factor of regulating power conversion module; Three-phase inversion unit, is connected between alternating expression power factor correction unit and the first output pin, and for the three phase mains for motor variable-frequency speed-regulating by input power conversion, alternating expression power factor correction unit and three-phase inversion unit package are in same shell.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises: inversion drives pin, is connected with the drive end of this three-phase inversion unit, for receiving, drives first of three-phase inversion unit to drive signal; Proofread and correct and drive pin, be connected with the drive end of alternating expression power factor correction unit, for receiving the two driving signal that drives alternating expression power factor correction unit.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises: controller, for the driving of three-phase inversion unit and alternating expression power factor correction unit is controlled, wherein, the first input end of controller drives pin to be connected with inversion, and the first output of controller is connected with the drive end of three-phase inversion unit; The second input of controller drives pin to be connected with correction, and the second output of controller is connected with the drive end of alternating expression power factor correction unit.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises: the first control signal input pin, is connected with controller, for receiving protection triggering signal and/or the switching signal of three-phase inversion unit; The second control signal input pin, is connected with controller, for receiving protection triggering signal and/or the switching signal of alternating expression power factor correction unit.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises: control signal output pin, is connected with controller, for the control signal to external circuit o controller.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises temperature survey pin, is connected, for receiving temperature measurement signal with controller.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises temperature signal output pin, is connected, for to external circuit output temperature measuring-signal with controller.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises: power factor correction unit voltage reference pin, for connecting the voltage reference of alternating expression power factor correction unit, alternating expression power factor correction unit comprises a plurality of BOOST subelement that boosts, each BOOST subelement that boosts comprises: the first power transistor, the drive end of this first power transistor is connected with controller, the first end of this first power transistor is connected with the first input pin, and the second end of this first power transistor is connected with power factor correction unit voltage reference pin; Fast recovery diode, the anode of this fast recovery diode is connected with the first input pin, and the negative electrode of this fast recovery diode is connected with the positive input of three-phase inversion unit.
Further, above-mentioned the first power transistor is insulated gate transistor or power metal-oxide field effect transistor.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises: inversion unit voltage reference pin, for connecting the voltage reference of inversion unit, inversion unit comprises three-phase inversion subelement, every contrary varitron unit comprises: upper brachium pontis power transistor, on this, the drive end of brachium pontis power transistor is connected with controller, and on this, the first end of brachium pontis power transistor is connected with the first input pin, and on this, the second end of brachium pontis power transistor is connected with the first output pin; Lower brachium pontis power transistor, the drive end of this lower brachium pontis power transistor is connected with controller, and the first end of this lower brachium pontis power transistor is connected with the first output pin, and the second end of this lower brachium pontis power transistor is connected with inversion unit voltage reference pin.
Further, above-mentioned upper brachium pontis power transistor is insulated gate transistor or power metal-oxide field effect transistor; Above-mentioned lower brachium pontis power transistor is insulated gate transistor or power metal-oxide field effect transistor.
Further, the power conversion module of above-mentioned transducer air conditioning also comprises: rectification unit input pin, rectification output pin and rectification unit, and wherein, rectification unit input pin, for connecting alternating current input power supplying; Rectification unit, the input of this rectification unit is connected with rectification unit input pin, and the output of rectification unit is connected with rectification output pin, for being single-phase DC power supply by alternating current input power supplying rectification; Rectification output pin, for output single-phase DC power supply.
According to technical scheme of the present invention, the power conversion module of transducer air conditioning comprises: for connecting the first input pin of direct-current input power supplying, for connecting the first output pin, the alternating expression power factor correction unit of motor, with three-phase inversion unit, wherein, alternating expression power factor correction unit, be connected between the first input pin and three-phase inversion unit, for the power factor of regulating power conversion module; Three-phase inversion unit, is connected between alternating expression power factor correction unit and the first output pin, and for the three phase mains for motor variable-frequency speed-regulating by input power conversion, alternating expression power factor correction unit and three-phase inversion unit package are in same shell.Apply technical scheme of the present invention, power device integrated level is high, and the area of the shared printed circuit board of device reduces greatly, has reduced the cost of printed board; And reduced production process to save the cost of labor in production process.Eliminated power device because using screw fixed heat sink to be subject to the impact of stress; Solve the technological problems that requires same radiating surface between power device, improved reliability.Between power device, distance is shorter simultaneously, has reduced the conductor length between device pin, has reduced the parasitic capacitance on wire, greatly reduces noise voltage.Thereby solved the low problem of power conversion circuit reliability of the transducer air conditioning of being built by discrete power device in prior art.
Accompanying drawing explanation
Figure of description is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the power conversion module of the transducer air conditioning of first embodiment of the invention;
Fig. 2 is according to the circuit diagram of the power conversion module of the transducer air conditioning of first embodiment of the invention;
Fig. 3 is according to the application schematic diagram of the power conversion module of the transducer air conditioning of first embodiment of the invention;
Fig. 4 is according to the schematic diagram of the power conversion module of the transducer air conditioning of second embodiment of the invention;
Fig. 5 is according to the circuit diagram of the power conversion module of the transducer air conditioning of second embodiment of the invention;
Fig. 6 is according to the schematic diagram of the power conversion module of the transducer air conditioning of third embodiment of the invention.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Fig. 1 is according to the schematic diagram of the power conversion module of the transducer air conditioning of first embodiment of the invention, as shown in Figure 1, the power conversion module 10 of the transducer air conditioning of first embodiment of the invention comprises: for connecting the first input pin L1 of direct-current input power supplying, for connecting the first output pin A1, the alternating expression power factor correction unit 11 of motor, with three-phase inversion unit 13, wherein, alternating expression power factor correction unit 11, be connected between the first input pin and three-phase inversion unit 13, for the power factor of regulating power conversion module; Three-phase inversion unit 13, be connected between alternating expression power factor correction unit 11 and the first output pin A1, for the three phase mains for motor variable-frequency speed-regulating by input power conversion, alternating expression power factor correction unit 11 and three-phase inversion unit 13 are encapsulated in same shell.Integration packaging can adopt IPM (Intelligent Power Module, Intelligent Power Module) technology.
The power conversion module of the transducer air conditioning of first embodiment of the invention, compare with the scheme that prior art adopts discrete device to realize power conversion circuit, power device integrated level is high, and the area of the shared printed circuit board of device reduces greatly, has reduced the cost of printed board; And reduced production process to save the cost of labor in production process.Eliminated power device because using screw fixed heat sink to be subject to the impact of stress; Solve the technological problems that requires same radiating surface between power device, improved reliability.Between power device, distance is shorter simultaneously, has reduced the conductor length between device pin, has reduced the parasitic capacitance on wire, thereby noise voltage also reduces greatly.
The pin of the power conversion module of the transducer air conditioning of the present embodiment can also comprise: inversion drives pin s1, is connected with the drive end of this three-phase inversion unit 13, for receiving, drives first of three-phase inversion unit 13 to drive signal; Proofread and correct and drive pin s2, be connected with the drive end of alternating expression power factor correction unit 11, for receiving the two driving signal that drives alternating expression power factor correction unit 11.By these two groups driving pins, can be by outside driving signal leading power conversion inside modules.
As shown in Figure 1, the internal circuit configuration of the power conversion module 10 of the transducer air conditioning of the first embodiment comprises: three-phase inversion unit 13 and alternating expression power factor correction unit 11, and three-phase inversion unit 13 is for carrying out power inverter under the driving at the first driving signal; Alternating expression power factor correction unit 11, for regulating the power factor of three-phase inversion unit 13 under the driving at two driving signal, wherein,
The positive input of three-phase inversion unit 13 and negative input are connected this three-phase inversion unit 13 with the positive pin of the first input pin L1 respectively output with negative pin is connected with the first output pin L1, and the drive end of this three-phase inversion unit 13 drives pin s2 to be connected with inversion;
Alternating expression power factor correction unit 11, be connected between the positive input and negative input of three-phase inversion unit 13, the drive end of alternating expression power factor correction unit 11 drives pin s1 to be connected with correction, for regulating the power factor of three-phase inversion unit 13 under the driving at two driving signal.
Fig. 2 is according to the circuit diagram of the power conversion module of the transducer air conditioning of first embodiment of the invention, as shown in Figure 2, alternating expression power factor correction unit 11 in the power conversion module of above-mentioned transducer air conditioning can be used interleaved PFC, this interleaved PFC consists of a plurality of BOOST subelement parallel connection of boosting, each BOOST subelement that boosts comprises: the first power transistor, the drive end of this first power transistor drives pin s2 to be connected with correction, the first end of this first power transistor is connected with the first input pin L1, the second end of this first power transistor is connected with power factor correction unit voltage reference pin E1.Fast recovery diode, the anode of this fast recovery diode is connected with the first input pin L1, and the negative electrode of this fast recovery diode is connected with the positive input of three-phase inversion unit 13.Wherein, power factor correction unit voltage reference pin E1 is for connecting the voltage reference output pin of alternating expression power factor correction unit 11.The first input pin L1 is for being connected with DC input voitage by inductor.
The first power transistor that BOOST boosts in subelement can be insulated gate transistor or power metal-oxide field effect transistor.Use unsettled mode rather than the directly grounded object of power factor correction unit voltage reference pin E1 to be: the reserved current detecting devices such as this module outer meeting resistance that allow are to detect the boost function of electric current of subelement by BOOST.
Particularly, above-mentioned interleaved PFC can be that 2 groups of subelements that boost form, and can be also that 3 groups of subelements that boost form, 4 groups of boost subelement or the subelements that more boost are formed in parallel.When using 2 groups to boost subelement formation in parallel interleaved PFC, drive the driving signal phase of every group of subelement first power transistor that boosts to differ 180 degree; When using 3 groups to boost subelement formation in parallel interleaved PFC, drive the driving signal phase of every group of subelement first power transistor that boosts to differ 120 degree; When using 4 groups to boost subelement formation in parallel interleaved PFC, drive the driving signal phase of every group of subelement first power transistor that boosts to differ 90 degree; With this, can be extrapolated to the subelement that more boosts.In Fig. 2, illustrated and used four groups of BOOST subelement that boosts to form the situation of interleaved PFC, wherein Q11, Q12, Q13, Q14 are the first power transistor, and D11, D12, D13, D14 are fast recovery diode.
Three-phase inversion unit 13 in the power conversion module of above-mentioned transducer air conditioning can be comprised of three-phase inversion subelement, wherein, every contrary varitron unit comprises: upper brachium pontis power transistor, on this, the drive end of brachium pontis power transistor drives pin s2 to be connected with inversion, on this, the first end of brachium pontis power transistor is connected with the first input pin L1, and on this, the second end of brachium pontis power transistor is connected with the first output pin A1; Lower brachium pontis power transistor, the drive end of this lower brachium pontis power transistor drives pin s2 to be connected with inversion, the first end of this lower brachium pontis power transistor is connected with the first output pin A1, the second end of this lower brachium pontis power transistor is connected with inversion unit voltage reference pin E2, wherein, power factor correction unit voltage reference pin E2 is for connecting the voltage reference of alternating expression power factor correction unit.Upper brachium pontis power transistor and lower brachium pontis power transistor all can be chosen as insulated gate transistor or power metal-oxide field effect transistor according to actual conditions.Use unsettled mode rather than the directly grounded object of inversion unit voltage reference pin E2 to be: the reserved current detecting devices such as this module outer meeting resistance that allow are with the function of the electric current that detects each contrary varitron unit and pass through.In Fig. 2, Q21 is that U goes up brachium pontis power transistor mutually, and Q22 is that U descends brachium pontis power crystal mutually, and Q23 is that V goes up brachium pontis power transistor mutually, and Q24 is that V descends brachium pontis power crystal mutually, and Q25 is that W goes up brachium pontis power transistor mutually, and Q26 is that W descends brachium pontis power crystal mutually.Fast recovery diode that can also be in parallel at Q21, Q22, Q23, Q24, Q25,Q26 two ends has completed afterflow.
Fig. 3 is according to the application schematic diagram of the power conversion module of the transducer air conditioning of first embodiment of the invention, as shown in Figure 3, outside rectification circuit is converted to single-phase DC power supply by AC power, this single-phase DC power supply is connected with the first input pin L1 by inductor, stable for the input direct voltage of three-phase inversion unit 13, can between boosting negative electrode and the ground of fast recovery diode of subelement, BOOST be connected an electric capacity.The three-phase alternating-current supply of three-phase inversion unit 13 outputs powers to the load.
In order further to improve the functional reliability of transducer air conditioning, the power conversion module of the transducer air conditioning of the embodiment of the present invention can also be passed through integrated manipulator, realizes protection and controls function.Second embodiment of the invention, on the basis of the power conversion module of the transducer air conditioning of the first embodiment, increases controller 15.Fig. 4 is according to the schematic diagram of the power conversion module of the transducer air conditioning of second embodiment of the invention, as can be seen from Figure 4, the first input end of controller 15 drives pin s2 to be connected with inversion, and the first output of controller 15 is connected with the drive end of three-phase inversion unit 13; The second input of controller 15 drives pin s1 to be connected with correction, and the second output of controller 15 is connected with the drive end of alternating expression power factor correction unit 11.Thereby controller can obtain above-mentioned first and drive after signal and two driving signal, controls the operating state of three-phase inversion unit 13 and alternating expression power factor correction unit 11 by controlling above-mentioned driving signal.
Preferably, the power conversion module of the transducer air conditioning of second embodiment of the invention can also increase by the first control signal input pin, is connected, for receiving protection triggering signal and/or the switching signal of three-phase inversion unit 13 with controller; The second control signal input pin, is connected with controller, for receiving protection triggering signal and/or the switching signal of alternating expression power factor correction unit 11.When external circuit work occurs that when abnormal, controller 15 is protected triggering signal or switching signal by detection, alternating expression power factor correction units 11 controlled by controller 15 and whether inversion module 13 is opened.Thereby, realize protection and the switch control functions of power conversion module, protect this power model, guarantee functional reliability.The functional similarity of this first control signal input pin and the second control signal input pin, unified representation is control signal input pin s3 in the drawings.
The power conversion module of the transducer air conditioning of second embodiment of the invention can also comprise: control signal output pin, is connected with controller, for the control signal to external circuit o controller.Thereby to external circuit, provide the specific works status signal of this power conversion module.
On the basis of the power conversion module of the transducer air conditioning of second embodiment of the invention; can also increase overheat protective function; by increasing temperature survey pin; for being connected with outside temperature sensor; controller 15 is connected with temperature survey pin, for three-phase inversion unit and alternating expression power factor correction unit being controlled according to temperature measurement signal.When the working temperature of power conversion module surpasses default temperature threshold, 15 pairs of alternating expression power factor correction units 11 of controller and inversion module 13 carry out corresponding control, to prevent overheat condition.Correspondingly, the power conversion module of the transducer air conditioning of second embodiment of the invention can also set temperature signal output pin, is connected, for to external circuit output temperature measuring-signal with controller 15.
Fig. 5 is according to the circuit diagram of the power conversion module of the transducer air conditioning of second embodiment of the invention, as shown in Figure 5, alternating expression power factor correction unit 11 in the power conversion module of above-mentioned transducer air conditioning consists of a plurality of BOOST subelement parallel connection of boosting, each BOOST subelement that boosts comprises: the first power transistor, the drive end of this first power transistor is connected with controller 15, controller 15 drives this first power transistor according to the guard signal of the alternating expression power factor correction unit of control signal output pin S3, the first end of this first power transistor is connected with the first input pin L1, the second end of this first power transistor is connected with power factor correction unit voltage reference pin E1.Fast recovery diode, the anode of this fast recovery diode is connected with the first input pin L1, and the negative electrode of this fast recovery diode is connected with the positive input of three-phase inversion unit 13.Wherein, power factor correction unit voltage reference pin E1 is for connecting the voltage reference output pin of alternating expression power factor correction unit 11.The first input pin L1 is for being connected with DC input voitage by inductor.
Boost second end of the first power transistor of subelement of each BOOST can arrange respectively a power factor correction unit voltage reference pin E1, and the second end of the first power transistor of the subelement that also all BOOST can be boosted is drawn by a power factor correction unit voltage reference pin E1 after inside is connected.Concrete situation can detect as required is the electric current of the every group of subelement that boosts or detecting electric current summation arranges flexibly.
The first power transistor that BOOST boosts in subelement can be insulated gate transistor or power metal-oxide field effect transistor.Use unsettled mode rather than the directly grounded object of power factor correction unit voltage reference pin E1 to be: the reserved current detecting devices such as this module outer meeting resistance that allow boost subelement by the function of electric current to detect each group BOOST.
Particularly, above-mentioned interleaved PFC can be that 2 groups of subelements that boost form, and can be also that 3 groups of subelements that boost form, 4 groups of boost subelement or the subelements that more boost are formed in parallel.When using 2 groups to boost subelement formation in parallel interleaved PFC, drive the driving signal phase of every group of subelement first power transistor that boosts to differ 180 degree; When using 3 groups to boost subelement formation in parallel interleaved PFC, drive the driving signal phase of every group of subelement first power transistor that boosts to differ 120 degree; When using 4 groups to boost subelement formation in parallel interleaved PFC, drive the driving signal phase of every group of subelement first power transistor that boosts to differ 90 degree; With this, can be extrapolated to the subelement that more boosts.In Fig. 5, illustrated and used two groups of BOOST subelement that boosts to form the situation of interleaved PFC, wherein Q11, Q12 are the first power transistor, and D11, D12 are fast recovery diode.DC is bus direct voltage anode, and BU, BV, BW are respectively the bootstrap voltage mode source pin of three-phase.
Three-phase inversion unit 13 is comprised of three-phase inversion subelement, wherein, every contrary varitron unit comprises: upper brachium pontis power transistor, on this, the drive end of brachium pontis power transistor is connected with controller 15, on this, the first end of brachium pontis power transistor is connected with the first input pin L1, and on this, the second end of brachium pontis power transistor is connected with the first output pin A1; Lower brachium pontis power transistor; the drive end of this lower brachium pontis power transistor is connected with controller 15; the first end of this lower brachium pontis power transistor is connected with the first output pin A1; the second end of this lower brachium pontis power transistor is connected with inversion unit voltage reference pin E2, and controller 15 drives upper brachium pontis power transistor and lower brachium pontis power transistor according to the guard signal of three-phase inversion unit.
Wherein, power factor correction unit voltage reference pin E2 is for connecting the voltage reference of alternating expression power factor correction unit.Upper brachium pontis power transistor and lower brachium pontis power transistor all can be chosen as insulated gate transistor or power metal-oxide field effect transistor according to actual conditions.Use unsettled mode rather than the directly grounded object of inversion unit voltage reference pin E2 to be: the reserved current detecting devices such as this module outer meeting resistance that allow are with the function of the electric current that detects each contrary varitron power supply and pass through.
The second end of the lower brachium pontis power transistor of every contrary varitron unit can arrange respectively a corresponding inversion unit voltage reference pin E2, also the second end of the lower brachium pontis power transistor of three-phase inversion subelement can be drawn by an inversion unit voltage reference pin E2 after inside is connected.The electric current that the electric current of every phase that concrete situation can detect as required still detects three-phase arranges flexibly.
In Fig. 5, Q21 is that U goes up brachium pontis power transistor mutually, and Q22 is that U descends brachium pontis power crystal mutually, and Q23 is that V goes up brachium pontis power transistor mutually, and Q24 is that V descends brachium pontis power crystal mutually, and Q25 is that W goes up brachium pontis power transistor mutually, and Q26 is that W descends brachium pontis power crystal mutually.Fast recovery diode that can also be in parallel at Q21, Q22, Q23, Q24, Q25,Q26 two ends has completed afterflow.Temperature survey pin is connected with controller 15 by negative temperature coefficient resister (Negative Temperature Coefficient, NTC).Table 1 is the pinout of power conversion module of the transducer air conditioning of second embodiment of the invention.
The pinout of table 1 power conversion module
The all right integrated rectification unit of power conversion module of the transducer air conditioning of the embodiment of the present invention, makes power conversion module become a power conversion system with complete function.Fig. 6 is according to the schematic diagram of the power conversion module of the transducer air conditioning of third embodiment of the invention, as shown in Figure 6, the rectification unit input of the power conversion module of the transducer air conditioning of third embodiment of the invention is connected with rectification unit input pin, the output of rectification unit is connected with rectification output pin, for being single-phase DC power supply by alternating current input power supplying rectification; Rectification unit input pin, for connecting alternating current input power supplying; Rectification output pin, for output single-phase DC power supply, the single-phase DC power supply of rectification unit 11 output is connected with the first input pin L1 after by inductor.
According to technical scheme of the present invention, the power conversion module of transducer air conditioning comprises: for connecting the first input pin of direct-current input power supplying, for connecting the first output pin, the alternating expression power factor correction unit of motor, with three-phase inversion unit, wherein, alternating expression power factor correction unit, be connected between the first input pin and three-phase inversion unit, for the power factor of regulating power conversion module; Three-phase inversion unit, is connected between alternating expression power factor correction unit and the first output pin, and for the three phase mains for motor variable-frequency speed-regulating by input power conversion, alternating expression power factor correction unit and three-phase inversion unit package are in same shell.Apply technical scheme of the present invention, power device integrated level is high, and the area of the shared printed circuit board of device reduces greatly, has reduced the cost of printed board; And reduced production process to save the cost of labor in production process.Eliminated power device because using screw fixed heat sink to be subject to the impact of stress; Solve the technological problems that requires same radiating surface between power device, improved reliability.Between power device, distance is shorter simultaneously, has reduced the conductor length between device pin, has reduced the parasitic capacitance on wire, greatly reduces noise voltage.Thereby solved the low problem of power conversion circuit reliability of the transducer air conditioning of being built by discrete power device in prior art.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. the power conversion module of a transducer air conditioning, it is characterized in that, this power conversion module comprises: for connecting the first input pin of direct-current input power supplying, for connecting the first output pin, the alternating expression power factor correction unit of motor, and three-phase inversion unit, wherein
Described alternating expression power factor correction unit, is connected between described the first input pin and described three-phase inversion unit, for the power factor of regulating power conversion module;
Described three-phase inversion unit, is connected between described alternating expression power factor correction unit and described the first output pin, for the three phase mains for motor variable-frequency speed-regulating by input power conversion,
Described alternating expression power factor correction unit and described three-phase inversion unit package are in same shell.
2. power conversion module according to claim 1, is characterized in that, also comprises:
Inversion drives pin, is connected with the drive end of described this three-phase inversion unit, for receiving, drives first of three-phase inversion unit to drive signal;
Proofread and correct and drive pin, be connected with the drive end of described alternating expression power factor correction unit, for receiving the two driving signal that drives alternating expression power factor correction unit.
3. power conversion module according to claim 2, is characterized in that, also comprises: controller, and for the driving of described three-phase inversion unit and described alternating expression power factor correction unit is controlled, wherein,
The first input end of described controller drives pin to be connected with described inversion, and the first output of described controller is connected with the drive end of described three-phase inversion unit;
The second input of described controller drives pin to be connected with described correction, and the second output of described controller is connected with the drive end of described alternating expression power factor correction unit.
4. power conversion module according to claim 3, is characterized in that, also comprises:
The first control signal input pin, is connected with described controller, for receiving protection triggering signal and/or the switching signal of described three-phase inversion unit;
The second control signal input pin, is connected with described controller, for receiving protection triggering signal and/or the switching signal of described alternating expression power factor correction unit.
5. power conversion module according to claim 3, is characterized in that, also comprises:
Control signal output pin, is connected with described controller, for the control signal to external circuit o controller.
6. power conversion module according to claim 3, is characterized in that, also comprises temperature survey pin, is connected, for receiving temperature measurement signal with described controller.
7. power conversion module according to claim 6, is characterized in that, also comprises temperature signal output pin, is connected, for export described temperature measurement signal to external circuit with described controller.
8. according to the power conversion module described in any one in claim 3 to 7, it is characterized in that, also comprise:
Power factor correction unit voltage reference pin, for connecting the voltage reference of described alternating expression power factor correction unit,
Described alternating expression power factor correction unit comprises a plurality of BOOST subelement that boosts, and described in each, the BOOST subelement that boosts comprises:
The first power transistor, the drive end of this first power transistor is connected with described controller, the first end of this first power transistor is connected with described the first input pin, and the second end of this first power transistor is connected with described power factor correction unit voltage reference pin;
Fast recovery diode, the anode of this fast recovery diode is connected with described the first input pin, and the negative electrode of this fast recovery diode is connected with the positive input of described three-phase inversion unit.
9. power conversion module according to claim 8, is characterized in that, described the first power transistor is insulated gate transistor or power metal-oxide field effect transistor.
10. according to the power conversion module described in any one in claim 3 to 7, it is characterized in that, also comprise:
Inversion unit voltage reference pin, for connecting the voltage reference of described inversion unit,
Described inversion unit comprises three-phase inversion subelement, and every mutually described inversion subelement comprises:
Upper brachium pontis power transistor, on this, the drive end of brachium pontis power transistor is connected with described controller, and on this, the first end of brachium pontis power transistor is connected with described the first input pin, and on this, the second end of brachium pontis power transistor is connected with described the first output pin;
Lower brachium pontis power transistor, the drive end of this lower brachium pontis power transistor is connected with described controller, the first end of this lower brachium pontis power transistor is connected with described the first output pin, and the second end of this lower brachium pontis power transistor is connected with described inversion unit voltage reference pin.
11. power conversion modules according to claim 10, is characterized in that,
Described upper brachium pontis power transistor is insulated gate transistor or power metal-oxide field effect transistor;
Described lower brachium pontis power transistor is insulated gate transistor or power metal-oxide field effect transistor.
12. according to the power conversion module described in any one in claim 1 to 7, it is characterized in that, also comprises: rectification unit input pin, rectification output pin and rectification unit, wherein,
Described rectification unit input pin, for connecting alternating current input power supplying;
Described rectification unit, the input of this rectification unit is connected with described rectification unit input pin, and the output of described rectification unit is connected with described rectification output pin, for being single-phase DC power supply by described alternating current input power supplying rectification;
Rectification output pin, for exporting described single-phase DC power supply.
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| CN201210202569.7A CN103516228B (en) | 2012-06-18 | 2012-06-18 | The power conversion modules of transducer air conditioning |
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| CN201210202569.7A CN103516228B (en) | 2012-06-18 | 2012-06-18 | The power conversion modules of transducer air conditioning |
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