CN204089581U - The filter circuit of the main power power-supply of high pressure and the power supply input circuit of air conditioner - Google Patents
The filter circuit of the main power power-supply of high pressure and the power supply input circuit of air conditioner Download PDFInfo
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- CN204089581U CN204089581U CN201420499069.9U CN201420499069U CN204089581U CN 204089581 U CN204089581 U CN 204089581U CN 201420499069 U CN201420499069 U CN 201420499069U CN 204089581 U CN204089581 U CN 204089581U
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- 239000003990 capacitor Substances 0.000 claims abstract description 49
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000005669 field effect Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model provides the filter circuit of the main power power-supply of a kind of high pressure and a kind of power supply input circuit of air conditioner, wherein, the filter circuit of the main power power-supply of high pressure, comprise: prime output voltage filter circuit, described prime output voltage filter circuit is connected in series between described power circuit and described load circuit, described prime output voltage filter circuit comprises at least three electrochemical capacitors be connected in parallel, for the low-frequency current in the filter circuit of the main power power-supply of high pressure described in filtering; Surge voltage absorbing circuit, described surge voltage absorbing circuit is connected in parallel to described prime output voltage filter circuit, for absorbing the surge voltage in the filter circuit of the main power power-supply of described high pressure.By technical solutions of the utility model, effectively reduce the ripple current of above-mentioned electrochemical capacitor, avoid the situation of the electrochemical capacitor heating caused because ripple current is excessive, and then improve the reliability of electrochemical capacitor and extend useful life of electrochemical capacitor.
Description
Technical field
The utility model relates to filter circuit technical field, in particular to the filter circuit of the main power power-supply of a kind of high pressure and a kind of power supply input circuit of air conditioner.
Background technology
In the related, as shown in Figure 1, filter circuit is connected in series between power circuit 101 and load circuit 104, wherein, capacitor filter 103 is primary structures of the filter function of the filter circuit realizing the main power power-supply of high pressure, in capacitor filter 103, usually arranges the larger electrochemical capacitor of one or two capacitance 102 carry out filtering.Therefore, the reliability of electrochemical capacitor 102 and aging effects the filter effect of the filter circuit of the main power power-supply of high pressure.
Ripple current is there is in the input current of general electrical equipment, ripple current is the higher harmonic current in input current, when especially there is inevitable ripple current in the high pressure range of 320V to 380V, flow through the filter circuit of the main power power-supply of high pressure at high-tension current after, ripple current can cause the heating of electrochemical capacitor and then cause the lower degradation problem of shortening in the useful life of electrochemical capacitor and service behaviour, and cause shorten and service behaviour under degradation problem the useful life of the filter circuit of the main power power-supply of high pressure further, final generation affects the problems such as electrical equipment normally runs because electrical equipment input current is unstable.
Therefore, how effectively to reduce the ripple current of electrochemical capacitor, the useful life and the service behaviour that improve electrochemical capacitor become technical problem urgently to be resolved hurrily.
Utility model content
The utility model is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, an object of the present utility model is to propose a kind of ripple current that effectively can reduce electrochemical capacitor, improves the filter circuit of the useful life of electrochemical capacitor and the main power power-supply of high pressure of service behaviour.
Another object of the present utility model is the power supply input circuit proposing a kind of air conditioner.
For achieving the above object, according to the embodiment of first aspect of the present utility model, propose the filter circuit of the main power power-supply of a kind of high pressure, comprise: prime output voltage filter circuit, described prime output voltage filter circuit is connected in series between described power circuit and described load circuit, described prime output voltage filter circuit comprises at least three electrochemical capacitors be connected in parallel, for the low-frequency current in the filter circuit of the main power power-supply of high pressure described in filtering; Surge voltage absorbing circuit, described surge voltage absorbing circuit is connected in parallel to described prime output voltage filter circuit, for absorbing the surge voltage in the filter circuit of the main power power-supply of described high pressure.
According to the filter circuit of the main power power-supply of the high pressure of embodiment of the present utility model, prime output voltage filter circuit comprises at least three electrochemical capacitors be connected in parallel, the capacitance of above-mentioned electrochemical capacitor is less than the capacitance of the electrochemical capacitor in existing filtering technique, and disperse ripple current by the electrochemical capacitor of the small capacitances value of multiple parallel connection, effectively reduce the ripple current flowing through electrochemical capacitor, improve useful life and the service behaviour of electrochemical capacitor, finally solve output current due to the filter circuit of the main power power-supply of high pressure unstable and affect the problem that other equipment normally run.
In addition, according to the filter circuit of the main power power-supply of the high pressure of the utility model above-described embodiment, following additional technical characteristic can also be had:
According to an embodiment of the present utility model, multiple piezo-resistances that described surge voltage absorbing circuit comprises a piezo-resistance or adopts the mode of series connection and/or parallel connection to connect.
According to the filter circuit of the main power power-supply of the high pressure of embodiment of the present utility model; specifically; surge voltage absorbing circuit absorbs surge voltage by a described piezo-resistance or multiple piezo-resistances of adopting series connection and/or the mode of parallel connection to connect; and with the in parallel of prime output voltage filter circuit, overvoltage protection is carried out at least three electrochemical capacitors by surge voltage absorbing circuit, and then ensure reliability and the service behaviour of electrochemical capacitor.
According to an embodiment of the present utility model, also comprise: rectification circuit, described rectification circuit is connected in series between described power circuit and described prime output voltage filter circuit, and the current commutates for the filter circuit by the main power power-supply of the described high pressure of input is treated to unidirectional current; Three inversion bridge circuits, described three inversion bridge-type circuit in parallel are connected between described load circuit and described surge voltage absorbing circuit, for described unidirectional current being treated to three-phase current to drive load circuit.
According to an embodiment of the present utility model, described rectification circuit is full bridge rectifier.
According to an embodiment of the present utility model, described three inversion bridge circuits comprise six the first power switchs be connected in parallel.
According to an embodiment of the present utility model, also comprise: power factor correction circuit, described power factor correction circuit is connected in series between described rectification circuit and described prime output voltage filter circuit, for the high-frequency current in the filter circuit of the main power power-supply of high pressure described in filtering.
According to an embodiment of the present utility model, described power factor correction circuit, comprising: inductance, and the first end of described inductance is connected to the first end of rectification circuit; First diode, the positive pole of described first diode is connected to the second end of described inductance, and the negative pole of described first diode is connected to the first end with described prime output voltage filter circuit; Power switch, described second power switch is connected between the second end of described inductance and the second end of described rectification circuit.
According to an embodiment of the present utility model, described power switch, comprise: the second diode, the positive pole of described second diode is connected to the second end of described inductance, and the positive pole of described second diode is connected to the second end of described prime output voltage filter circuit; Triode, the collector electrode of described triode is connected to the second end of described inductance, and the emitter of described triode is connected to the second end of described prime output voltage filter circuit, and the base stage of described triode is unsettled.
According to the filter circuit of the main power power-supply of the high pressure of embodiment of the present utility model, specifically, by arranging described power switch, overcurrent protection is carried out to above-mentioned at least three electrochemical capacitors, and then ensure reliability and the service behaviour of electrochemical capacitor, in addition, described triode can be IGBT (Insulated gate bipolar transistor, insulated gate bipolar transistor) or MOSFET (Metal oxide semiconductor field effect transistor, metal oxide layer semiconductor field-effect transistor) etc. the less transistor of leakage current, and then realize carrying out chop control to the voltage after rectification.
According to an embodiment of the present utility model, the capacitance of at least three described electrochemical capacitors is equal.
According to the embodiment of the utility model second aspect, also proposed a kind of power supply input circuit of air conditioner, comprising:
The filter circuit of the main power power-supply of high pressure according to any one of technique scheme, the filter circuit of the main power power-supply of described high pressure is connected in series between the load circuit of described power circuit and described air conditioner.
In sum, the filter circuit of the main power power-supply of the high pressure that the utility model proposes, ripple current is disperseed by the electrochemical capacitor of the small capacitances value of multiple parallel connection, effectively reduce the ripple current flowing through electrochemical capacitor, improve useful life of electrochemical capacitor and service behaviour, finally solve output current due to the filter circuit of the main power power-supply of high pressure unstable and affect the problem that other equipment normally run.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the structural representation of the filter circuit in correlation technique;
Fig. 2 shows the structural representation of the filter circuit according to the main power power-supply of the high pressure of embodiment of the present utility model.
Wherein, the corresponding relation in Fig. 2 between Reference numeral and component names is: 1 power circuit, 2 rectification circuits, 3 power factor correction circuits, 4 triodes, 5 second diodes, 6 second power switchs, 7 first diodes, 8 prime output voltage filter circuits, 9 surge voltage absorbing circuits, 10 electrochemical capacitors, 11 first power switchs, 12 3 inversion bridge circuits, 13 load circuits, 14 inductance.
Embodiment
In order to more clearly understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection range of the present utility model is not by the restriction of following public specific embodiment.
Fig. 2 shows the structural representation of the filter circuit according to the main power power-supply of the high pressure of embodiment of the present utility model.
As shown in Figure 2, according to the filter circuit of the main power power-supply of the high pressure of embodiment of the present utility model, comprise: prime output voltage filter circuit 8, described prime output voltage filter circuit 8 is connected in series between described power circuit 1 and described load circuit 13, described prime output voltage filter circuit 8 comprises at least three electrochemical capacitors 10 be connected in parallel, for the low-frequency current in the filter circuit 8 of the main power power-supply of high pressure described in filtering; Surge voltage absorbing circuit 9, described surge voltage absorbing circuit 9 is connected in parallel to described prime output voltage filter circuit 8, for absorbing the surge voltage in the filter circuit of the main power power-supply of described high pressure.
Prime output voltage filter circuit 8 comprises at least three electrochemical capacitors 10 be connected in parallel, the capacitance of above-mentioned electrochemical capacitor 10 is less than the capacitance of the electrochemical capacitor in existing filtering technique, and disperse ripple current by the electrochemical capacitor 10 of this multiple small capacitances value parallel connection, effectively reduce the ripple current flowing through electrochemical capacitor, improve useful life of electrochemical capacitor and service behaviour, then solve output current due to the filter circuit of the main power power-supply of high pressure unstable and affect the problem that other equipment normally run.
In addition, according to the filter circuit of the main power power-supply of the high pressure of the utility model above-described embodiment, following additional technical characteristic can also be had:
According to an embodiment of the present utility model, multiple piezo-resistances that described surge voltage absorbing circuit 9 comprises a piezo-resistance or adopts the mode of series connection and/or parallel connection to connect.
Specifically; surge voltage absorbing circuit 9 absorbs surge voltage by a described piezo-resistance or multiple piezo-resistances of adopting series connection and/or the mode of parallel connection to connect; and with the in parallel of prime output voltage filter circuit 8, overvoltage protection is carried out at least three electrochemical capacitors 10 by surge voltage absorbing circuit, and then ensure reliability and the service behaviour of electrochemical capacitor.
According to an embodiment of the present utility model, also comprise: rectification circuit 2, described rectification circuit 2 is connected in series between described power circuit 1 and described prime output voltage filter circuit 8, and the current commutates for the filter circuit by the main power power-supply of the described high pressure of input is treated to unidirectional current; Three inversion bridge circuits 12, described three inversion bridge circuits 12 are connected in parallel between described load circuit 13 and described surge voltage absorbing circuit 9, for described unidirectional current being treated to three-phase current to drive load circuit.
According to an embodiment of the present utility model, described rectification circuit 2 is full bridge rectifiers.
According to an embodiment of the present utility model, described three inversion bridge circuits 12 comprise six the first power switchs 11 be connected in parallel.
According to an embodiment of the present utility model, also comprise: power factor correction circuit 3, described power factor correction circuit 3 is connected in series between described rectification circuit 2 and described prime output voltage filter circuit 8, for the high-frequency current in the filter circuit of the main power power-supply of high pressure described in filtering.
According to an embodiment of the present utility model, described power factor correction circuit 3, comprising: inductance 14, and the first end of described inductance 14 is connected to the first end of rectification circuit 2; First diode 7, the positive pole of described first diode 7 is connected to the second end of described inductance 14, and the negative pole of described first diode 7 is connected to the first end with described prime output voltage filter circuit 8; Second power switch 6, between the second end that described second power switch 6 is connected to described inductance 14 and the second end of described rectification circuit 2.
According to an embodiment of the present utility model, described second power 6 switch, comprise: the second diode 5, the positive pole of described second diode 5 is connected to the second end of described inductance 14, and the positive pole of described second diode 5 is connected to the second end of described prime output voltage filter circuit 8; Triode 4, the collector electrode of described triode 4 is connected to the second end of described inductance 14, and the emitter of described triode 4 is connected to the second end of described prime output voltage filter circuit 8, and the base stage of described triode 4 is unsettled.
Specifically, by arranging described second power switch 6, overcurrent protection is carried out to above-mentioned at least three electrochemical capacitors 10, and then ensure reliability and the service behaviour of electrochemical capacitor 10, in addition, described triode 4 can be IGBT (Insulated gate bipolar transistor, insulated gate bipolar transistor) or MOSFET (Metal oxide semiconductor field effect transistor, metal oxide layer semiconductor field-effect transistor) etc. the less transistor of leakage current, and then realize carrying out chop control to the voltage after rectification.
According to an embodiment of the present utility model, the capacitance of described at least three electrochemical capacitors 10 is equal.
More than be described with reference to the accompanying drawings the technical solution of the utility model, the utility model proposes and a kind ofly effectively can reduce the ripple current of electrochemical capacitor and a kind of power supply input circuit of air conditioner, ripple current can be disperseed by the electrochemical capacitor of the small capacitances value of multiple parallel connection, effectively reduce the ripple current flowing through electrochemical capacitor, improve useful life of electrochemical capacitor and service behaviour, then solve output current due to the filter circuit of the main power power-supply of high pressure unstable and affect the problem that other equipment normally run.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. a filter circuit for the main power power-supply of high pressure, the filter circuit of the main power power-supply of described high pressure is connected between power circuit and load circuit, it is characterized in that, comprising:
Prime output voltage filter circuit, described prime output voltage filter circuit is connected in series between described power circuit and described load circuit, described prime output voltage filter circuit comprises at least three electrochemical capacitors be connected in parallel, for the low-frequency current in the filter circuit of the main power power-supply of high pressure described in filtering;
Surge voltage absorbing circuit, described surge voltage absorbing circuit is connected in parallel to described prime output voltage filter circuit, for absorbing the surge voltage in the filter circuit of the main power power-supply of described high pressure.
2. the filter circuit of the main power power-supply of high pressure according to claim 1, is characterized in that, multiple piezo-resistances that described surge voltage absorbing circuit comprises a piezo-resistance or adopts the mode of series connection and/or parallel connection to connect.
3. the filter circuit of the main power power-supply of high pressure according to claim 1, is characterized in that, also comprise:
Rectification circuit, described rectification circuit is connected in series between described power circuit and described prime output voltage filter circuit, and the current commutates for the filter circuit by the main power power-supply of the described high pressure of input is treated to unidirectional current;
Three inversion bridge circuits, described three inversion bridge-type circuit in parallel are connected between described load circuit and described surge voltage absorbing circuit, for described unidirectional current being treated to three-phase current to drive load circuit.
4. the filter circuit of the main power power-supply of high pressure according to claim 3, is characterized in that, described rectification circuit is full bridge rectifier.
5. the filter circuit of the main power power-supply of high pressure according to claim 3, is characterized in that, described three inversion bridge circuits comprise six the first power switchs be connected in parallel.
6. the filter circuit of the main power power-supply of high pressure according to claim 1, is characterized in that, also comprise:
Power factor correction circuit, described power factor correction circuit is connected in series between described rectification circuit and described prime output voltage filter circuit, for the high-frequency current in the filter circuit of the main power power-supply of high pressure described in filtering.
7. the filter circuit of the main power power-supply of high pressure according to claim 6, is characterized in that, described power factor correction circuit, comprising:
Inductance, the first end of described inductance is connected to the first end of rectification circuit;
First diode, the positive pole of described first diode is connected to the second end of described inductance, and the negative pole of described first diode is connected to the first end with described prime output voltage filter circuit;
Second power switch, described second power switch is connected between the second end of described inductance and the second end of described rectification circuit.
8. the filter circuit of the main power power-supply of high pressure according to claim 7, is characterized in that, described second power switch, comprising:
Second diode, the positive pole of described second diode is connected to the second end of described inductance, and the positive pole of described second diode is connected to the second end of described prime output voltage filter circuit;
Triode, the collector electrode of described triode is connected to the second end of described inductance, and the emitter of described triode is connected to the second end of described prime output voltage filter circuit, and the base stage of described triode is unsettled.
9. the filter circuit of the main power power-supply of high pressure according to any one of claim 1 to 8, is characterized in that, the capacitance of at least three described electrochemical capacitors is equal.
10. the power supply input circuit of an air conditioner, it is characterized in that, comprise: the filter circuit of the main power power-supply of high pressure according to any one of claim 1 to 9, the filter circuit of the main power power-supply of described high pressure is connected in series between the load circuit of described power circuit and described air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420499069.9U CN204089581U (en) | 2014-09-01 | 2014-09-01 | The filter circuit of the main power power-supply of high pressure and the power supply input circuit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420499069.9U CN204089581U (en) | 2014-09-01 | 2014-09-01 | The filter circuit of the main power power-supply of high pressure and the power supply input circuit of air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN204089581U true CN204089581U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420499069.9U Expired - Lifetime CN204089581U (en) | 2014-09-01 | 2014-09-01 | The filter circuit of the main power power-supply of high pressure and the power supply input circuit of air conditioner |
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| CN (1) | CN204089581U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953854A (en) * | 2015-06-19 | 2015-09-30 | 广东美的制冷设备有限公司 | Variable-frequency air conditioner, power circuit of outdoor unit of variable-frequency air conditioner and PFC (power factor correction) control method |
| CN108631606A (en) * | 2017-03-20 | 2018-10-09 | 奥克斯空调股份有限公司 | A kind of power conversion circuit and ripple current suppressing method |
-
2014
- 2014-09-01 CN CN201420499069.9U patent/CN204089581U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953854A (en) * | 2015-06-19 | 2015-09-30 | 广东美的制冷设备有限公司 | Variable-frequency air conditioner, power circuit of outdoor unit of variable-frequency air conditioner and PFC (power factor correction) control method |
| CN108631606A (en) * | 2017-03-20 | 2018-10-09 | 奥克斯空调股份有限公司 | A kind of power conversion circuit and ripple current suppressing method |
| CN108631606B (en) * | 2017-03-20 | 2019-11-05 | 奥克斯空调股份有限公司 | A kind of power conversion circuit and ripple current suppressing method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150107 |