CN201893694U - Auxiliary power source bootstrap circuit of power conversion unit - Google Patents
Auxiliary power source bootstrap circuit of power conversion unit Download PDFInfo
- Publication number
- CN201893694U CN201893694U CN2010205521430U CN201020552143U CN201893694U CN 201893694 U CN201893694 U CN 201893694U CN 2010205521430 U CN2010205521430 U CN 2010205521430U CN 201020552143 U CN201020552143 U CN 201020552143U CN 201893694 U CN201893694 U CN 201893694U
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- bootstrapping
- surge
- power supply
- storage capacitor
- bootstrap
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Abstract
An auxiliary power source bootstrap circuit of a power conversion unit comprises an input filter capacitor, an anti-surge resistor, an anti-surge switch, a bootstrap charging resistor, a bootstrap energy-storage capacitor and an auxiliary power source. One end of the input filter capacitor is connected with a high-voltage input positive end, the other end of the input filter capacitor is connected with a common end of the anti-surge switch, a normally open point of the anti-surge switch is connected with a high-voltage input negative end, the anti-surge resistor is connected between a common point and the normally open point of the anti-surge switch in parallel, one end of the bootstrap charging resistor is connected with a normally closed point of the anti-surge switch, the other end of the bootstrap charging resistor is connected with one end of the bootstrap energy-storage capacitor, the other end of the bootstrap energy-storage capacitor is connected with the high-voltage input negative end, and a power supply control end of the auxiliary power source is connected to two ends of the bootstrap energy-storage capacitor in parallel. The auxiliary power source bootstrap circuit of a power conversion unit has lowered power consumption and space occupation and strengthened reliability.
Description
Technical field
The utility model relates to a kind of accessory power supply boostrap circuit, be adapted to various in, the accessory power supply in large power, electrically supply changeover device bootstrapping starts occasion.
Background technology
In various, in the large power, electrically supply changeover device, all to use the power supply of accessory power supply as control loop, when device started, at first accessory power supply realized that bootstrapping starts, and could start by implement device then.Being illustrated in figure 1 as a kind of typical power supply change-over device accessory power supply bootstrapping starts and anti-surge circuit, be the accessory power supply schematic diagram in the frame of broken lines wherein, at first importing high pressure charges to input filter capacitor (C1), C2 respectively by resistance R 1, R2, reach the starting resistor of auxiliary power controller when C2 voltage after, accessory power supply is started working, a branch road of accessory power supply charges to C2 by D1, to keep C2 voltage, the D2 of leading up in addition provides working power for other control circuit of device; After the accessory power supply work, control switch Kl closure after device control circuit detects C1 voltage abundance, device formally starts.
The shortcoming that existing boostrap circuit exists is: (1) resistance R 2 hangs on the high pressure all the time, has bigger power consumption, generally can be between 3 ~ 8W; (2) resistance R 2 can occupy bigger PCB space; (3) resistance R 2 hangs on the high pressure reliability requirement to R2 all the time also than higher.
Summary of the invention
For big, the deficiency big, poor reliability that takes up room of power consumption that overcomes the accessory power supply boostrap circuit that has power supply change-over device, the utility model provides a kind of reduces power consumption, reduce the accessory power supply boostrap circuit that takes up room and improve the power supply change-over device of reliability.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of accessory power supply boostrap circuit of power supply change-over device, comprise input filter capacitor (C1), anti-surge resistance (R1), anti-surge switch (K1), bootstrapping charging resistor (R2), bootstrapping storage capacitor (C2) and accessory power supply, described input filter capacitor (C1) end links to each other with high pressure input anode, described input filter capacitor (C1) other end links to each other with the common port of described anti-surge switch (K1), link to each other with high pressure input negative terminal the normal battle of described anti-surge switch (K1), described anti-surge resistance (R1) is attempted by between the common point and normal battle of described anti-surge switch (K1), the normally closed point of one end of described bootstrapping charging resistor (R2) and described anti-surge switch (K1) links to each other, the other end of described bootstrapping charging resistor (R2) links to each other with an end of described bootstrapping storage capacitor (C2), the other end of described bootstrapping storage capacitor (C2) links to each other with high pressure input negative terminal, and the control feeder ear of accessory power supply is attempted by the two ends of bootstrapping storage capacitor (C2).
Technical conceive of the present utility model is: as shown in Figure 2, be the accessory power supply schematic diagram in the frame of broken lines wherein.When device starts, the switch contact of anti-surge switch (K1) is in normally closed point, the input high pressure charges to input filter capacitor (C1) (being worth bigger) by anti-surge resistance (R1), suppress surge current, import high pressure simultaneously by input filter capacitor (C1), bootstrapping charging resistor (R2) is charged to bootstrapping storage capacitor (C2), after bootstrapping storage capacitor (C2) voltage reaches the starting resistor of auxiliary power controller, accessory power supply is started working, a branch road of accessory power supply is given bootstrapping storage capacitor (C2) charging by diode (D1), to keep bootstrapping storage capacitor (C2) voltage, the D2 of leading up in addition provides working power for other control circuit of device; After the accessory power supply work, anti-surge switch (K1) action of control after device control circuit detects input filter capacitor (C1) voltage abundance, the contact of anti-surge switch (K1) switches to normal battle, device is formal to be started, the bootstrapping charge tunnel cuts off, and bootstrapping charging resistor (R2) breaks away from high-pressure side.
Owing to bootstrapping storage capacitor (C2) is charged by input filter capacitor (C1), bootstrapping charging resistor (R2), therefore be the poor of input voltage and input filter capacitor (C1) terminal voltage by bootstrapping charging resistor (R2) to the charging voltage of the storage capacitor (C2) of booting, requiring under the situation of identical charging charge, the instantaneous power of bootstrapping charging resistor (R2) significantly reduces, and when operate as normal, anti-surge switch (K1) is in normal battle, bootstrapping charging resistor (R2) breaks away from high-pressure side, and no current flows through.
The beneficial effects of the utility model mainly show: 1, under the situation that does not increase additional devices, instantaneous power consumption during startup on the bootstrapping charging resistor R2 significantly reduces, R2 goes up no power consumption during operate as normal, volume and the shared plate area of R2 have been reduced, improve overall efficiency, particularly treated engine efficiency; 2, during operate as normal, R2 breaks away from high-pressure side, and lossless, has prolonged the life-span of R2, thereby improves whole aircraft reliability.
Description of drawings
Fig. 1 is common accessory power supply boostrap circuit schematic diagram.
Fig. 2 is the utility model accessory power supply boostrap circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 2, a kind of accessory power supply boostrap circuit of power supply change-over device, comprise input filter capacitor (C1), anti-surge resistance (R1), anti-surge switch (K1), bootstrapping charging resistor (R2), bootstrapping storage capacitor (C2) and accessory power supply, described input filter capacitor (C1) end links to each other with high pressure input anode, described input filter capacitor (C1) other end links to each other with the common port of described anti-surge switch (K1), link to each other with high pressure input negative terminal the normal battle of described anti-surge switch (K1), described anti-surge resistance (R1) is attempted by between the common point and normal battle of described anti-surge switch (K1), it is characterized in that: the normally closed point of an end of described bootstrapping charging resistor (R2) and described anti-surge switch (K1) links to each other, the other end of described bootstrapping charging resistor (R2) links to each other with an end of described bootstrapping storage capacitor (C2), the other end of described bootstrapping storage capacitor (C2) links to each other with high pressure input negative terminal, and the control feeder ear of accessory power supply is attempted by the two ends of bootstrapping storage capacitor (C2).
In the present embodiment, as shown in Figure 2, be the accessory power supply schematic diagram in the frame of broken lines wherein.When device starts, the switch contact of anti-surge switch (K1) is in normally closed point, the input high pressure charges to input filter capacitor (C1) (being worth bigger) by anti-surge resistance (R1), suppress surge current, import high pressure simultaneously by input filter capacitor (C1), bootstrapping charging resistor (R2) is charged to bootstrapping storage capacitor (C2), after bootstrapping storage capacitor (C2) voltage reaches the starting resistor of auxiliary power controller, accessory power supply is started working, a branch road of accessory power supply is given bootstrapping storage capacitor (C2) charging by diode (D1), to keep bootstrapping storage capacitor (C2) voltage, the D2 of leading up in addition provides working power for other control circuit of device; After accessory power supply (in the frame of broken lines in the accompanying drawing 2 the is accessory power supply) work, anti-surge switch (K1) action of control after device control circuit detects input filter capacitor (C1) voltage abundance, the contact of anti-surge switch (K1) switches to normal battle, device is formal to be started, the bootstrapping charge tunnel cuts off, and bootstrapping charging resistor (R2) breaks away from high-pressure side.
Owing to bootstrapping storage capacitor (C2) is charged by input filter capacitor (C1), bootstrapping charging resistor (R2), therefore be the poor of input voltage and input filter capacitor (C1) terminal voltage by bootstrapping charging resistor (R2) to the charging voltage of the storage capacitor (C2) of booting, requiring under the situation of identical charging charge, the instantaneous power of bootstrapping charging resistor (R2) significantly reduces, and when operate as normal, anti-surge switch (K1) is in normal battle, bootstrapping charging resistor (R2) breaks away from high-pressure side, and no current flows through.
Claims (1)
1. the accessory power supply boostrap circuit of a power supply change-over device, comprise input filter capacitor (C1), anti-surge resistance (R1), anti-surge switch (K1), bootstrapping charging resistor (R2), bootstrapping storage capacitor (C2) and accessory power supply, described input filter capacitor (C1) end links to each other with high pressure input anode, described input filter capacitor (C1) other end links to each other with the common port of described anti-surge switch (K1), link to each other with high pressure input negative terminal the normal battle of described anti-surge switch (K1), described anti-surge resistance (R1) is attempted by between the common point and normal battle of described anti-surge switch (K1), it is characterized in that: the normally closed point of an end of described bootstrapping charging resistor (R2) and described anti-surge switch (K1) links to each other, the other end of described bootstrapping charging resistor (R2) links to each other with an end of described bootstrapping storage capacitor (C2), the other end of described bootstrapping storage capacitor (C2) links to each other with high pressure input negative terminal, and the control feeder ear of accessory power supply is attempted by the two ends of bootstrapping storage capacitor (C2).
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205521430U CN201893694U (en) | 2010-03-10 | 2010-09-30 | Auxiliary power source bootstrap circuit of power conversion unit |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020129566.1 | 2010-03-10 | ||
| CN201020129566 | 2010-03-10 | ||
| CN2010205521430U CN201893694U (en) | 2010-03-10 | 2010-09-30 | Auxiliary power source bootstrap circuit of power conversion unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893694U true CN201893694U (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205521430U Expired - Lifetime CN201893694U (en) | 2010-03-10 | 2010-09-30 | Auxiliary power source bootstrap circuit of power conversion unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201893694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951136A (en) * | 2010-03-10 | 2011-01-19 | 杭州中恒电气股份有限公司 | Auxiliary power source bootstrapping circuit of power source converting device |
| TWI695565B (en) * | 2018-01-30 | 2020-06-01 | 台達電子工業股份有限公司 | Auxiliary circuit and power converter |
-
2010
- 2010-09-30 CN CN2010205521430U patent/CN201893694U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951136A (en) * | 2010-03-10 | 2011-01-19 | 杭州中恒电气股份有限公司 | Auxiliary power source bootstrapping circuit of power source converting device |
| CN101951136B (en) * | 2010-03-10 | 2012-09-05 | 杭州中恒电气股份有限公司 | Auxiliary power source bootstrapping circuit of power source converting device |
| TWI695565B (en) * | 2018-01-30 | 2020-06-01 | 台達電子工業股份有限公司 | Auxiliary circuit and power converter |
| US10972093B2 (en) | 2018-01-30 | 2021-04-06 | Delta Electronics, Inc. | Auxiliary circuit and power converter |
| US11362654B2 (en) | 2018-01-30 | 2022-06-14 | Delta Electronics, Inc. | Auxiliary circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110706 Effective date of abandoning: 20120905 |