CN201994844U - Power supply with passive power factor correction network - Google Patents
Power supply with passive power factor correction network Download PDFInfo
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- CN201994844U CN201994844U CN2011201022866U CN201120102286U CN201994844U CN 201994844 U CN201994844 U CN 201994844U CN 2011201022866 U CN2011201022866 U CN 2011201022866U CN 201120102286 U CN201120102286 U CN 201120102286U CN 201994844 U CN201994844 U CN 201994844U
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- power supply
- power factor
- network
- factor correcting
- reactive power
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- 238000004146 energy storage Methods 0.000 claims description 28
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 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 discloses a power supply with a passive power factor correction network, which comprises an input filter circuit 1, a passive power factor correction network 2 and an output converter stage 3. The alternating current output of the output converter stage 3 and the alternating current input of the power supply have N (NEUTRAL) lines; sine waves run synchronously; and an insulating transformer is not needed. The passive power factor correction network 2 is arranged between the input filter circuit 1 and the output converter stage 3 and has a passive power factor correction function and a passive boosting function. The power supply with the passive power factor correction network has the advantages of simple and reliable simple, high efficiency and low cost.
Description
Technical field
The utility model relates to power technique fields, the power supply of a class band reactive power factor correcting network specifically, it has the PPFC (Passive Power Factor Correction) function, and the interchange output that allows power supply with exchanges import common N[NEUTRAL] line.
Background technology
Efficiency, environmental protection and cost are three technology focuses of field of power supplies always.Current, for satisfying the requirement of power factor value, various power supplys all are provided with the one-level APFC usually specially, are used to finish that voltage promotes and power factor correction, again because output can not be total to N[NEUTRAL with input] line and need isolating transformer.These can reduce overall efficiency undoubtedly, improve the complete machine cost.So people are all the time in the solution of exploring the problems referred to above.
The utility model content
The utility model discloses the power supply of a class band reactive power factor correcting network, finish PPFC (Passive Power Factor Correction), Bootstrap rectification or voltage multiplying rectifier function, and input N[NEUTRAL is altogether exported and exchanges in the interchange of permission power supply] line, save isolating transformer.This is the high efficiency of assurance complete machine, and low cost is simple in structure, miniaturization, and high input power factor provides necessary condition.
The utility model adopts following technical scheme to solve the problems of the technologies described above:
The power supply input is passed to reactive power factor correcting network 2 through input filter circuit 1, with its rectification of boosting, generation has one section unidirectional sine voltage of DC component and supplies with output transform level 3, wherein DC component is the part of boosting of voltage, in order to satisfy the 3 output voltage amplitude requirements of output transform level, wherein one section unidirectional sine voltage provides the PPFC (Passive Power Factor Correction) function, because in this time period, output transform level 3 is directly from power supply input H[HOT] line, N[NEUTRAL] line draws pulse current.
Described reactive power factor correcting network 2 comprises rectifier diode Dr1, Dr2, the negative pole of Dr1 connects the positive output end of reactive power factor correcting network 2, the negative pole that the positive pole of Dr1 meets diode Dr2 exchanges input N[NEUTRAL with power supply] on the node of line, the positive pole of Dr2 connects the negative output terminal of reactive power factor correcting network 2.
Described reactive power factor correcting network 2 also comprises energy storage network 21 and following energy storage network 21 ', the positive output end of the described reactive power factor correcting network 2 of positive output termination of last energy storage network 21, the H[HOT of the positive output end of energy storage network 21 ' and civil power input under its negative output termination] the line node, the negative output terminal of the described reactive power factor correcting network 2 of negative output termination of following energy storage network 21 '.
Upper and lower energy storage network 21,21 ' circuit form, component parameters are identical, upper and lower energy storage network 21,21 ' discharge voltage are by the circuit structure form decision of energy storage network, initial power-up is through after several excessive cycles, its discharge voltage can be the M/N of power supply input sine wave voltage magnitude, also can be N/one, N is an integer, M=N+1.
According to the requirement of the power factor value of required boost amplitude and power supply input, can select different circuit structure forms for use.Be illustrated below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the power supply block diagram of the utility model one class band reactive power factor correcting network;
Fig. 2 is used to not have the ups power embodiment block diagram of isolating transformer for the utility model.
Fig. 3 is used for Switching Power Supply embodiment block diagram for the utility model.
In the accompanying drawing, the list of parts of each label representative is as follows:
1 is the input filter circuit block diagram, 2 is the reactive power factor correcting network block diagram, and 3 is output transform level block diagram, and 4 is the battery system block diagram of ups power, 21 is last energy storage network diagram, 21 ' is following energy storage network diagram, and 21-2,21-2 ' are respectively a kind of embodiment of upper and lower energy storage network, 21-3,21-3 ' is respectively the another embodiment of upper and lower energy storage network, and 3-1 is a ups power half-bridge inverter block diagram, and 3-2 is a half-bridge resonance formula Switching Power Supply output stage block diagram.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
As shown in Figure 1, the power supply block diagram of a class band reactive power factor correcting network;
The power supply input is passed to reactive power factor correcting network 2 through input filter circuit 1, with its rectification of boosting, generation has one section unidirectional sinusoidal voltage of DC component, supply with output transform level 3, comprising DC component be the part of boosting of voltage, be used to satisfy the 3 output voltage amplitude requirements of output transform level, comprising one section unidirectional sine voltage, the PPFC (Passive Power Factor Correction) function is provided, because in this time period, output transform level 3 is directly from power supply input H[HOT] line, N[NEUTRAL] line draws pulse current, and length has during this period of time determined the input power factor value of power supply.
Under the synchronous situation of output that allows power supply and input sine wave voltage, the output of output transform level 3 can with the common N[NEUTRAL of power supply input] line, save isolating transformer.
Fig. 2 is used to not have the ups power embodiment block diagram of isolating transformer for the utility model. is characterized in, the output of described ups power and power supply input sine wave voltage are synchronous, the output of output transform level 3 and power supply input be N[NEUTRAL altogether] line, save isolating transformer.
Among Fig. 2,21-2 is last energy storage network, and 21-2 ' is respectively the one-level current follow-up circuit for following energy storage network, finishes the Bootstrap rectification jointly with rectifier diode Dr1, Dr2, and the amplitude increment of Bootstrap is about half of power supply input sine wave voltage magnitude.In the ideal case, if power supply input sine wave voltage magnitude is 300V, the voltage that then adds to ups power half-bridge inverter 3-1 comprises the DC component of 150V and the unidirectional sine wave that voltage magnitude is 300V, the output voltage amplitude requirement of enough inverter 3-1; Under pure resistive load situation, spend to the time period of 180 degree from 0, described half-bridge inverter 3-1 press sinusoidal wave rule directly from power supply input H[HOT] line, N[NEUTRAL] line absorption pulse current, so the input power factor of power supply can be done very highly.
Fig. 3 is used for Switching Power Supply embodiment block diagram for the utility model, Fig. 3 has broken the N[NEUTRAL of Switching Power Supply output and civil power input] the line line, 21-3 is last energy storage network among Fig. 2,21-3 ' is following energy storage network, circuit form of the two and parameter are identical, respectively comprise N charging paths, the M discharge paths be made up of 2N storage capacitor and [2N+1] individual diode, M=N+1, N are integer.
Wherein, the positive pole of storage capacitor C1, the positive pole of C3,---, the positive pole of [C2N-1], diode D[2N+1] negative pole extremely link to each other with the positive output of last energy storage network 21-3, the negative pole of storage capacitor C2, the negative pole of C4,---, C[2N] negative pole, the positive pole of diode D1 extremely link to each other with the negative output of last energy storage network 21-2; The negative pole of diode D1 connects the positive pole of diode D2 and the negative pole node of storage capacitor C1, the negative pole of diode D2 connects the positive pole of diode D3 and the cathode node of storage capacitor C2, the negative pole of diode D3 connects the positive pole of diode D4 and the negative pole node of storage capacitor C3, the negative pole of diode D4 connects the positive pole of diode D5 and the cathode node of storage capacitor C4,---, diode D[2N-1] negative pole meet positive pole and the storage capacitor C[2N-1 of diode D2N] the negative pole node, the negative pole of diode D2N meets diode D[2N+1] positive pole and the cathode node of storage capacitor C2N.
Initial power-up is through after several excessive cycles, and the discharge voltage of described energy storage network is about N: M with the ratio of input sine wave voltage magnitude, and M=N+1, N are integer.Such as, N=3, M=4, the discharge voltage of described upper and lower energy storage network respectively are about 0.75 times of input sine wave voltage magnitude, so add to the voltage of half-bridge resonance formula Switching Power Supply output stage 3-2, its DC component is about the amplitude voltage of 1.5 times input sine wave.Its alternating current component amplitude is about 0.25 times input sine wave voltage magnitude, corresponding input voltage sine wave is about 48.6 and spends to 131.4 degree, that is spend to 131.4 at 48.6 of input voltage sine wave and to spend in the time period, half-bridge resonance formula Switching Power Supply output stage 3-2 directly draws pulse current from power input line, so the input power factor of power supply can be done very highly.
Claims (5)
1. the power supply of a class band reactive power factor correcting network is characterized in that:
Pass through input filter circuit (1) successively after the civil power input and carry out filtering, reactive power factor correcting network (2) carries out conversion, after export after output transform level (3) conversion.
2. the power supply of band reactive power factor correcting network according to claim 1, it is characterized in that: reactive power factor correcting network (2) comprises rectifier diode Dr1, Dr2, the negative pole of Dr1 connects the positive output end of reactive power factor correcting network (2), the negative pole that the positive pole of Dr1 meets diode Dr2 exchanges input N[NEUTRAL with power supply] on the node of line, the positive pole of Dr2 connects the negative output terminal of reactive power factor correcting network (2).
3. the power supply of band reactive power factor correcting network according to claim 1, it is characterized in that: described reactive power factor correcting network (2), also comprise identical energy storage network (21) and the following energy storage network (21 ') gone up of circuit form and parameter, the positive output end of the positive output termination reactive power factor correcting network (2) of last energy storage network (21), the H[HOT of the positive output end of energy storage network (21 ') and civil power input under its negative output termination] the line node, the negative output terminal of the negative output termination reactive power factor correcting network (2) of following energy storage network (21 ').
4. the power supply of band reactive power factor correcting network according to claim 1, it is characterized in that:, allow the interchange output of power supply to be total to N[NEUTRAL with the input that exchanges of power supply in the interchange output of power supply and exchanging under the sinusoidal wave synchronous condition of the voltage of importing of power supply] line.
5. the power supply of band reactive power factor correcting network according to claim 3, it is characterized in that: upper and lower energy storage network (21,21 '), can be respectively storage capacitor C1, a C1 ', the positive pole of storage capacitor C1, C1 ' connects the positive output end of upper and lower energy storage network (21,21 ') respectively, and the negative pole of storage capacitor C1, C1 ' connects the negative output terminal of upper and lower energy storage network (21,21 ') respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201022866U CN201994844U (en) | 2011-04-11 | 2011-04-11 | Power supply with passive power factor correction network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201022866U CN201994844U (en) | 2011-04-11 | 2011-04-11 | Power supply with passive power factor correction network |
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| Publication Number | Publication Date |
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| CN201994844U true CN201994844U (en) | 2011-09-28 |
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| CN2011201022866U Expired - Fee Related CN201994844U (en) | 2011-04-11 | 2011-04-11 | Power supply with passive power factor correction network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522883A (en) * | 2011-12-20 | 2012-06-27 | 成都成电硅海科技股份有限公司 | Passive power factor correction circuit |
| CN103312142A (en) * | 2012-03-09 | 2013-09-18 | 北京加维通讯电子技术有限公司 | AC power supply device |
-
2011
- 2011-04-11 CN CN2011201022866U patent/CN201994844U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522883A (en) * | 2011-12-20 | 2012-06-27 | 成都成电硅海科技股份有限公司 | Passive power factor correction circuit |
| CN103312142A (en) * | 2012-03-09 | 2013-09-18 | 北京加维通讯电子技术有限公司 | AC power supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANXI HENGTAI JIAHUA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DONG ZHENLONG Effective date: 20150528 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100036 HAIDIAN, BEIJING TO: 030006 TAIYUAN, SHAANXI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150528 Address after: Four, No. 030006, building 2, building 5, hi tech Industrial Road, Shanxi, Taiyuan, 401B Patentee after: Shanxi Hengtai Jiahua Technology Co., Ltd. Address before: 100036, No. 74 West Third Ring Road, Beijing, Haidian District Patentee before: Dong Zhenlong |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20170411 |
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| CF01 | Termination of patent right due to non-payment of annual fee |