CN102801352A - Power conversion module and frequency conversion air-conditioner - Google Patents
Power conversion module and frequency conversion air-conditioner Download PDFInfo
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- CN102801352A CN102801352A CN2012103325330A CN201210332533A CN102801352A CN 102801352 A CN102801352 A CN 102801352A CN 2012103325330 A CN2012103325330 A CN 2012103325330A CN 201210332533 A CN201210332533 A CN 201210332533A CN 102801352 A CN102801352 A CN 102801352A
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Abstract
The invention provides a power conversion module and a frequency conversion air-conditioner. The power conversion module for the frequency conversion air-conditioner comprises a power factor correction circuit and an inversion circuit which are integrated on the same substrate, wherein a power device of an inversion circuit acquires an inversion driving signal through an inversion driving pin; the power conversion module also comprises a driving protection circuit which is used for checking the inversion driving signal; the input end of the driving protection circuit is connected with the inversion driving pin; and the output end of the driving protection circuit is connected with the inversion circuit. The driving signal transmitted from the outside is verified, if the driving signal does not meet the verification requirement, the driving signal is locked by the inversion circuit, or the driving signal is processed and is transmitted to the inversion circuit, so that the driving signal is disconnected when the driving signal transmitted by the driving controller is interfered or has a severe problem, so that the power conversion module is protected, and the operating stability is improved.
Description
Technical field
The present invention relates to field of air conditioning, particularly, relate to a kind of Power Conversion module and transducer air conditioning.
Background technology
At present, extensively adopted the ac-dc-ac inverter drive scheme in the domestic variable frequency air-conditioning, for solving the big problem of harmonic content of the AC side that this scheme brings, generally using in the prior art has increased circuit of power factor correction after rectification circuit.
Mostly be to adopt discrete insulated gate bipolar transistor IGBT+fast recovery diode+SPM to realize the prime power factor correction in the present air-conditioning product, the back level connects the inversion of separation frequency converter and constitutes whole frequency conversion speed-adjusting system.
Fig. 1 and Fig. 2 illustrate the frequency control scheme that has power factor emendation function that comparatively ripe at present employing discrete device is realized; Referring to Fig. 1 and Fig. 2; There is certain problem in the more power device of this scheme in production and assembling process: the unified and device orientation problem like the power device setting height(from bottom); In order to guarantee that setting height(from bottom) need adopt special fixed high frock, has a strong impact on production efficiency in the operating process; Secondly can not mate fully as if setting height(from bottom); Each power device radiating surface will be or not same plane; The device pin stress deformation is caused in the mounting screw location, and module heat dissipating can be had a strong impact on simultaneously, and the pin of distortion increases with the bad possibility of device failure that causes of heat radiation; In addition because the influence of the restriction of device outline packages and electrical equipment case structure causes cabling lengthening between the power device pin; Long cabling increases stray inductance, the electric capacity on the circuit; The current signal that changes at a high speed makes the bigger noise voltage of generation on the circuit, and the spike of noise voltage is had higher requirement to the withstand voltage of device, and this noise voltage also is bigger interference source simultaneously; Be diffused in the entire controller circuit, the antijamming capability of control system needs further to strengthen.
In the prior art, it is big to build ac-dc-ac inverter circuit noise voltage for above-mentioned discrete device, and the assembling complicated problems does not propose effective solution at present as yet.
Summary of the invention
The objective of the invention is to propose a kind of Power Conversion module and transducer air conditioning, being used to solve discrete device, to build ac-dc-ac inverter circuit noise voltage big, the assembling complicated problems.
A kind of Power Conversion module of transducer air conditioning is provided according to an aspect of the present invention.Adopt following technical scheme: the Power Conversion module of this transducer air conditioning; Comprise the circuit of power factor correction and the inverter circuit that are integrated on the same substrate; The power device of inverter circuit drives pin through inversion and obtains the inversion drive signal, and this Power Conversion module also comprises Drive Protecting Circuit, is used for the inversion drive signal is verified; The input of Drive Protecting Circuit drives pin with inversion and is connected, and the output of Drive Protecting Circuit is connected with inverter circuit.
Further; Above-mentioned inverter circuit comprises the three-phase inversion unit; Every phase inversion unit is used for inversion and goes out a cross streams power supply, and every phase inversion unit pack is drawn together: go up brachium pontis power device and following brachium pontis power device, wherein; First end of last brachium pontis power device connects the positive pole of circuit of power factor correction output; Second end of following brachium pontis power device connects the negative pole of circuit of power factor correction output, and second end of last brachium pontis power device is connected with this inverting output terminal mutually with first end of following brachium pontis power device, and the drive end of last brachium pontis power device is connected with the output of Drive Protecting Circuit respectively with following brachium pontis power device drive end.
Further, be respectively arranged with driving resistor between the drive end of the output of Drive Protecting Circuit and last brachium pontis power device and between the drive end of the output of Drive Protecting Circuit and last brachium pontis power device.
Further, inverter circuit uses insulated gate transistor or power metal-oxide FET as last brachium pontis power device and following brachium pontis power device.
Further, Drive Protecting Circuit also is used for: in the judgement drive signal of brachium pontis power device and following brachium pontis power device drive signal whether simultaneously effectively, and according to judged result make progress brachium pontis power device and following brachium pontis power device transmission drive signal.
Further, when the drive signal and the following brachium pontis power device drive signal while of last brachium pontis power device were effective, the Drive Protecting Circuit output stopped output.
Further, Drive Protecting Circuit also is used for: whether the intensity of judging drive signal exceeds preset threshold value, and according to judged result make progress brachium pontis power device and following brachium pontis power device transmission drive signal.
Further, when the intensity of drive signal exceeded preset threshold value, the Drive Protecting Circuit output stopped output.
Further, Drive Protecting Circuit also is used for: whether the sequential of judging drive signal is correct, and according to judged result make progress brachium pontis power device and following brachium pontis power device transmission drive signal.
Further, when mistake appearred in the sequential of drive signal, the Drive Protecting Circuit output stopped output.
According to another aspect of the present invention, offered a kind of transducer air conditioning.This transducer air conditioning comprises the Power Conversion module, and this Power Conversion module is above-mentioned any Power Conversion module.
Use the Power Conversion module of the transducer air conditioning of present embodiment; The input of Drive Protecting Circuit is connected respectively with inversion driving pin with output and is connected with the inverter circuit drive end, the drive signal that the outside transmits is verified, if above-mentioned drive signal meets the demands; To this drive signal of inverter circuit drive end transmission; If above-mentioned drive signal does not satisfy the checking requirement, then take to block drive signal to inverter circuit, perhaps drive signal is handled the back and send to inverter circuit; When thereby the drive signal that guarantees the driving governor transmission serious problems occur owing to the drive signal itself that is interfered or controller sends; Break off drive signal, improved the functional reliability of Power Conversion module, prevent the Power Conversion module failure that causes because of drive signal.Because circuit of power factor correction and the integrated setting of inverter circuit are compared with traditional discrete device scheme, and the power device height is integrated, has reduced the parasitic parameter on the lead, noise voltage also reduces greatly simultaneously; Each power device is integrated in the module on the same substrate, has improved production efficiency, and has strengthened the reliability of module.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the frequency conversion speed-adjusting system structural representation of the described discrete device of background technology according to the present invention;
Fig. 2 is the structure chart that the part with Power Conversion module among Fig. 1 specifically illustrates;
Fig. 3 is the sketch map according to the Power Conversion module of the transducer air conditioning of the embodiment of the invention;
Fig. 4 is the sketch map according to the three-phase inversion unit of the Power Conversion module of the transducer air conditioning of the embodiment of the invention of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Fig. 3 is the sketch map according to the Power Conversion module of the transducer air conditioning of the embodiment of the invention; As shown in Figure 3; This Power Conversion module 10 comprises: be integrated in circuit of power factor correction 11 and inverter circuit 13 on the same substrate; Circuit of power factor correction 11 is connected between direct current input pin and the inverter circuit 13 power factor that is used to regulate the power conversion module; Inverter circuit 13 is connected between circuit of power factor correction 11 and the interchange output pin, is used for the input power source conversion is used for the three-phase alternating-current supply of motor variable-frequency speed-regulating.The power device of inverter circuit 13 drives pin through inversion and obtains the inversion drive signal.The Power Conversion module 10 of present embodiment also comprises Drive Protecting Circuit 15 in addition; Be used for the inversion drive signal of inversion unit is verified; Wherein the input of Drive Protecting Circuit 15 is connected with inversion driving pin, and the output of Drive Protecting Circuit 15 is connected with inverter circuit 13.These Power Conversion module 10 integrated encapsulation can be adopted can IPM (Intelligent Power Module, intelligence power model) technology.
Because the drive signal of inverter circuit 13 is sent by peripheral control unit; Mode through lead-in wire connects; Might cause the drive signal mistake, and the mistake of drive signal can influence the functional reliability of whole Power Conversion module because of the output fault of interference or controller in the transmission course; Therefore, the application is provided with Drive Protecting Circuit drive signal is verified in the Power Conversion module.
Use the Power Conversion module of the transducer air conditioning of present embodiment, the input of Drive Protecting Circuit 15 is connected respectively with inversion driving pin with output and is connected with inverter circuit 13 drive ends, and the drive signal that the outside transmits is verified; If above-mentioned drive signal meets the demands; To this drive signal of inverter circuit 13 drive ends transmission,, then take to block drive signal to inverter circuit 13 if above-mentioned drive signal does not satisfy the checking requirement; Perhaps drive signal being handled the back sends to inverter circuit 13; When thereby the drive signal that guarantees the driving governor transmission serious problems occur owing to the drive signal itself that is interfered or controller sends, break off drive signal, with protection Power Conversion module; Improve functional reliability, prevent the Power Conversion module failure that causes because of drive signal.
Transducer air conditioning generally uses the three phase variable frequency compressor; The inverter circuit 13 of present embodiment can comprise the three-phase inversion unit; Every phase inversion unit is used for inversion and goes out a cross streams power supply; Fig. 4 is the sketch map according to the three-phase inversion unit of the Power Conversion module of the transducer air conditioning of the embodiment of the invention of the embodiment of the invention; As shown in Figure 4, every phase inversion unit pack is drawn together: go up brachium pontis power device and following brachium pontis power device, wherein; First end of last brachium pontis power device connects the positive pole of circuit of power factor correction 11 outputs; Second end of following brachium pontis power device connects the negative pole of circuit of power factor correction 11 outputs, and second end of last brachium pontis power device is connected with this inverting output terminal mutually with first end of following brachium pontis power device, and the drive end of last brachium pontis power device is connected with the output of Drive Protecting Circuit 15 respectively with following brachium pontis power device drive end.In Fig. 4, Q1, Q3, Q5 are last brachium pontis power device, and Q2, Q4, Q6 are following brachium pontis power device, and Q1 has formed U inversion unit mutually with Q4, and Q3 has formed V inversion unit mutually with Q6, and Q5 has formed W inversion unit mutually with Q2.
Further, be respectively arranged with driving resistor between the drive end of the output of Drive Protecting Circuit 15 and last brachium pontis power device and between the drive end of the output of Drive Protecting Circuit 15 and last brachium pontis power device.R1, R2, R3, R4, R5, R6 in Fig. 4 are respectively the driving resistor of Q1, Q2, Q3, Q4, Q5, Q6.Inverter circuit 13 can use insulated gate transistor or power metal-oxide FET as last brachium pontis power device and following brachium pontis power device.
The concrete mode of Drive Protecting Circuit 15 checking drive signals can comprise following one or more:
(1) whether simultaneously effectively Drive Protecting Circuit 15 judges the drive signal that goes up the brachium pontis power device and following brachium pontis power device drive signal, and according to judged result make progress brachium pontis power device and following brachium pontis power device transmission drive signal.
Owing to when last brachium pontis power device and the conducting simultaneously of following brachium pontis power device, be equivalent to the DC power supply direct short-circuit that rectification draws, can cause that power model burns when serious, for avoiding this catastrophe failure.Drive Protecting Circuit 15 judges whether drive signal and the following brachium pontis power device drive signal of last brachium pontis power device of homophase be effective simultaneously; When the last brachium pontis power device of homophase and the situation of following brachium pontis power device conducting simultaneously occurring effectively causing simultaneously; Drive Protecting Circuit 15 is blocked outside drive signal; The output of Drive Protecting Circuit 15 stops output drive signal, and sends the corresponding prompt signal.
(2) Drive Protecting Circuit 15 judges whether the size of drive signal exceeds preset threshold value, and according to judged result make progress brachium pontis power device and following brachium pontis power device transmission drive signal.
In transmission course, drive signal might cause the strength retrogression of drive signal because of reasons such as interference, if the insufficient strength of drive signal can cause power device not move according to the indication of drive signal, causes the inversion mistake.Therefore; Drive Protecting Circuit 15 can be provided with the intensity threshold of drive signal in advance; And the intensity of judging the drive signal receive exceeds preset intensity threshold, if exceed preset range, can block outside drive signal; The output of Drive Protecting Circuit 15 stops output drive signal, and sends the corresponding prompt signal.
In addition, Drive Protecting Circuit 15 can also be provided with amplifier and attenuator, if drive signal strength is excessive, this signal is decayed the back to the power device transmission, if drive signal strength is too small, this signal is amplified the back send to power device.
(3) Drive Protecting Circuit 15 judges whether the sequential of drive signal is correct; And send drive signal with following brachium pontis power device, and according to judged result make progress brachium pontis power device and following brachium pontis power device transmission drive signal according to the judged result brachium pontis power device that makes progress.
When drive signal is sent drive signal to a plurality of power devices; The switching sequence of each power device is to follow general inversion control rule; If receive interference, when sequential rule wrong appears obviously running counter in the drive signal that receives, can block outside drive signal; The output of Drive Protecting Circuit 15 stops output drive signal, and sends the corresponding prompt signal.
The concrete verification method of above Drive Protecting Circuit 15 can use simultaneously; Also can select configuration according to the actual requirements; In addition, Drive Protecting Circuit 15 can also comprise alarm signal output ends, according to self the judged result of drive signal is exported corresponding information.Make controller get access to the concrete working condition of power model.
Embodiments of the invention also provide a kind of transducer air conditioning to use above-mentioned Power Conversion module 10 that the DC power supply of rectification circuit output is transformed to the three-phase alternating-current supply that frequency-changeable compressor uses.
Use the Power Conversion module of the transducer air conditioning of present embodiment, the input of Drive Protecting Circuit 15 is connected respectively with inversion driving pin with output and is connected with inverter circuit 13 drive ends, and the drive signal that the outside transmits is verified; If above-mentioned drive signal meets the demands; To this drive signal of inverter circuit 13 drive ends transmission,, then take to block drive signal to inverter circuit 13 if above-mentioned drive signal does not satisfy the checking requirement; Perhaps drive signal being handled the back sends to inverter circuit 13; When thereby the drive signal that guarantees the driving governor transmission serious problems occur owing to the drive signal itself that is interfered or controller sends, break off drive signal, with protection Power Conversion module; Improve functional reliability, prevent the Power Conversion module failure that causes because of drive signal.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the Power Conversion module of a transducer air conditioning; Comprise the circuit of power factor correction and the inverter circuit that are integrated on the same substrate, the power device of said inverter circuit drives pin through inversion and obtains the inversion drive signal, it is characterized in that; Also comprise Drive Protecting Circuit; Be used for said inversion drive signal is verified that the input of said Drive Protecting Circuit drives pin with said inversion and is connected, the output of said Drive Protecting Circuit is connected with said inverter circuit.
2. Power Conversion module according to claim 1 is characterized in that said inverter circuit comprises the three-phase inversion unit, and every mutually said inversion unit is used for inversion and goes out a cross streams power supply, and every mutually said inversion unit comprises:
Last brachium pontis power device and following brachium pontis power device; Wherein, Said first end of going up the brachium pontis power device connects the positive pole of said circuit of power factor correction output; Said second end of brachium pontis power device down connects the negative pole of said circuit of power factor correction output; Said second end of going up the brachium pontis power device is connected with this inverting output terminal mutually with said first end of brachium pontis power device down, and the said drive end of going up the brachium pontis power device is connected with the output of said Drive Protecting Circuit respectively with said brachium pontis power device drive end down.
3. Power Conversion module according to claim 2; It is characterized in that, be respectively arranged with driving resistor between the drive end of the output of said Drive Protecting Circuit and said upward brachium pontis power device and between the drive end of the output of Drive Protecting Circuit and said upward brachium pontis power device.
4. according to claim 2 or 3 described Power Conversion modules, it is characterized in that said inverter circuit uses insulated gate transistor or power metal-oxide FET as said brachium pontis power device and the said brachium pontis power device down gone up.
5. according to claim 2 or 3 described Power Conversion modules; It is characterized in that; Said Drive Protecting Circuit also is used for: judge whether the drive signal of said upward brachium pontis power device and said brachium pontis power device drive signal down be effective simultaneously, and send drive signal according to judged result to said upward brachium pontis power device and following brachium pontis power device.
6. Power Conversion module according to claim 5 is characterized in that, when the drive signal of said drive signal that goes up the brachium pontis power device and said brachium pontis power device down simultaneously effectively the time, said Drive Protecting Circuit output stops output.
7. according to claim 2 or 3 described Power Conversion modules; It is characterized in that; Said Drive Protecting Circuit also is used for: whether the intensity of judging said drive signal exceeds preset threshold value, and sends drive signal to the said brachium pontis power device of going up with following brachium pontis power device according to judged result.
8. Power Conversion module according to claim 7 is characterized in that, when the intensity of said drive signal exceeded preset threshold value, said Drive Protecting Circuit output stopped output.
9. according to claim 2 or 3 described Power Conversion modules; It is characterized in that; Said Drive Protecting Circuit also is used for: whether the sequential of judging said drive signal is correct, and sends drive signal to the said brachium pontis power device of going up with following brachium pontis power device according to judged result.
10. Power Conversion module according to claim 9 is characterized in that, when mistake appearred in the sequential of said drive signal, said Drive Protecting Circuit output stopped output.
11. a transducer air conditioning comprises the Power Conversion module, it is characterized in that, said Power Conversion module is each described Power Conversion module in the claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103325330A CN102801352A (en) | 2012-09-07 | 2012-09-07 | Power conversion module and frequency conversion air-conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103325330A CN102801352A (en) | 2012-09-07 | 2012-09-07 | Power conversion module and frequency conversion air-conditioner |
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| CN102801352A true CN102801352A (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103325330A Pending CN102801352A (en) | 2012-09-07 | 2012-09-07 | Power conversion module and frequency conversion air-conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988625A (en) * | 2018-06-19 | 2018-12-11 | 珠海格力电器股份有限公司 | Integrated morphology, drive control device and the air-conditioning of drive control device |
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| CN2181660Y (en) * | 1993-12-25 | 1994-11-02 | 唐山市普发电子技术开发公司 | Intelligent frequency-change refrigerating unit |
| CN201191814Y (en) * | 2008-04-07 | 2009-02-04 | 黄中军 | AC electric motor speed regulating control device |
| CN201956968U (en) * | 2011-01-26 | 2011-08-31 | 珠海格力电器股份有限公司 | Frequency conversion speed regulator and frequency conversion air-conditioner |
| CN102624203A (en) * | 2011-01-26 | 2012-08-01 | 珠海格力电器股份有限公司 | Frequency converter and inverter air conditioner |
| CN202872686U (en) * | 2012-09-07 | 2013-04-10 | 珠海格力电器股份有限公司 | A power conversion module and an inverter air conditioner |
-
2012
- 2012-09-07 CN CN2012103325330A patent/CN102801352A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2181660Y (en) * | 1993-12-25 | 1994-11-02 | 唐山市普发电子技术开发公司 | Intelligent frequency-change refrigerating unit |
| CN201191814Y (en) * | 2008-04-07 | 2009-02-04 | 黄中军 | AC electric motor speed regulating control device |
| CN201956968U (en) * | 2011-01-26 | 2011-08-31 | 珠海格力电器股份有限公司 | Frequency conversion speed regulator and frequency conversion air-conditioner |
| CN102624203A (en) * | 2011-01-26 | 2012-08-01 | 珠海格力电器股份有限公司 | Frequency converter and inverter air conditioner |
| CN202872686U (en) * | 2012-09-07 | 2013-04-10 | 珠海格力电器股份有限公司 | A power conversion module and an inverter air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988625A (en) * | 2018-06-19 | 2018-12-11 | 珠海格力电器股份有限公司 | Integrated morphology, drive control device and the air-conditioning of drive control device |
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Application publication date: 20121128 |