CN201608529U - Precharge circuit of voltage-type active power filter and active static-var generator - Google Patents
Precharge circuit of voltage-type active power filter and active static-var generator Download PDFInfo
- Publication number
- CN201608529U CN201608529U CN2009201009826U CN200920100982U CN201608529U CN 201608529 U CN201608529 U CN 201608529U CN 2009201009826 U CN2009201009826 U CN 2009201009826U CN 200920100982 U CN200920100982 U CN 200920100982U CN 201608529 U CN201608529 U CN 201608529U
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- Prior art keywords
- circuit
- power filter
- precharge circuit
- active
- bus capacitor
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
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Abstract
The utility model relates to a precharge circuit of a voltage-type active power filter and an active static-var generator. When the active power filter APF and the active static-var generator ASVG have large equipment capacitor, and the rating current reaches to hundreds of ampere, a selected precharge contactor selected originally leads the whole volume to be larger due to large contact capacity, in the whole set of equipment, occupied area is larger, the installation is difficult and the volume of the whole set of equipment is increased. The product comprises a direct-current type capacitor precharge circuit (1); one end of the direct-current type capacitor precharge circuit (1) is a line inlet end, and the other end of the direct-current type capacitor precharge circuit (1) is connected with a reactor (3); the reactor (3) is connected with a converter IGBT (4) which is connected with a direct-current side capacitor (5); and the direct-current side capacitor (5) is a line outlet end. The precharge circuit is used for the precharge circuit of the voltage-type active power filter and the active static-var generator.
Description
Technical field:
The utility model relates to the precharging circuit of a kind of voltage type active electric-power filter and active reacance generator.
Background technology:
For a long time, the pre-charge circuit that is used for voltage type active electric-power filter APF and active reacance generator ASVG, be in order to prevent that circuit from powering on the back to the moment impact of dc bus capacitor device, at first dc bus capacitor is charged by pre-charge resistance, after dc capacitor voltage reaches rated value, by be connected on precharge contactor in the major loop with the pre-charge resistance short circuit after, entire circuit begins operate as normal.The precharge contactor is because of being connected in the major loop, so its main contacts choice of capacity will be complementary with Active Power Filter-APF APF and active reacance generator ASVG place capacity.When active electric-power filter APF and active reacance generator ASVG place capacity hour, selected precharge contactor volume is little, installs and easy-to-connect, to the not influence of volume of complete equipment.But it is big to work as active electric-power filter APF and active reacance generator ASVG place capacity, rated current reaches the hundreds of ampere-hour, selected in the past precharge contactor is bigger because of contact capacity ambassador overall volume, area occupied is bigger in complete equipment, difficulty is installed, the volume of complete equipment is increased.In addition, in complete equipment work therebetween, the precharge contactor coil is in electriferous state for a long time, aging the burning that make it to generate heat, even cause fire.
Summary of the invention:
The purpose of this utility model is to overcome the deficiency of existing Active Power Filter-APF APF and active reacance generator ASVG dc bus capacitor pre-charge circuit, provide a kind of rational in infrastructure, can satisfy the precharge purpose of dc bus capacitor, reduce the overall volume of complete equipment, particularly place capacity again and more given prominence to the voltage type active electric-power filter of its advantage and the precharging circuit of active reacance generator when big.
Above-mentioned purpose realizes by following technical scheme:
The precharging circuit of voltage type active electric-power filter and active reacance generator, its composition comprises: the dc bus capacitor pre-charge circuit, one end of described dc bus capacitor pre-charge circuit is the end of incoming cables, the other end of described dc bus capacitor pre-charge circuit connects reactor, described connection reactor connects current transformer IGBT, described current transformer IGBT connects dc bus capacitor, and described dc bus capacitor is a leading-out terminal.
The precharging circuit of described voltage type active electric-power filter and active reacance generator, described dc bus capacitor pre-charge circuit are to be connected with pre-charge resistance by three miniature circuit breakers to be that lead-in circuit breaker is formed in parallel afterwards.
Beneficial effect:
1. the utility model has overcome the deficiency of existing Active Power Filter-APF APF of technical background part and active reacance generator ASVG dc bus capacitor pre-charge circuit.Described lead-in circuit breaker has the undervoltage tripping function, and the undervoltage tripping function is controlled by pre-charge circuit.
2. the utility model has reduced failure rate because of the cancellation of contactor, and is simple to operation, improved the fail safe of the overall operation of complete equipment simultaneously.
3. the utility model has been saved a contactor, makes topology layout more reasonable, has reduced the overall volume of complete equipment.Particularly when place capacity is big, more give prominence to its advantage, increased its market competition dynamics.
Description of drawings:
Accompanying drawing 1 is a block diagram of the present utility model.
Accompanying drawing 2 is a circuit diagram of the present utility model.
Embodiment:
Embodiment 1:
The precharging circuit of voltage type active electric-power filter and active reacance generator, its composition comprises: dc bus capacitor pre-charge circuit 1, one end of described dc bus capacitor pre-charge circuit 1 is the end of incoming cables, the other end of described dc bus capacitor pre-charge circuit 1 connects reactor 3, described connection reactor 3 connects current transformer IGBT4, described current transformer IGBT4 connects dc bus capacitor 5, and described dc bus capacitor 5 is a leading-out terminal.
The precharging circuit of described voltage type active electric-power filter and active reacance generator, described dc bus capacitor pre-charge circuit 1 are to be connected with pre-charge resistance 7 by three miniature circuit breakers 6 to be that lead-in circuit breaker 2 is formed in parallel afterwards.
The precharging circuit of voltage type active electric-power filter and active reacance generator, described lead-in circuit breaker has the undervoltage tripping function, and the undervoltage tripping function is controlled by pre-charge circuit.
The precharging circuit of described voltage type active electric-power filter and active reacance generator, even when described three miniature circuit breakers are in gate-dividing state there be the lead-in circuit breaker end of incoming cables, circuit breaker also can't close a floodgate, could close a floodgate after must charging to dc bus capacitor by pre-charge resistance, after just preventing to power on, this, has reached precharge purpose to the moment impact of dc bus capacitor device.The whole power up of equipment only need be closed three miniature circuit breakers earlier, directly close lead-in circuit breaker after spending several seconds, described lead-in circuit breaker has two effects, the one, directly substituted for a long time always precharge contactor as the short circuit pre-charge resistance, the 2nd, main circuit breaker during the equipment operate as normal.
Claims (2)
1. the precharging circuit of a voltage type active electric-power filter and active reacance generator, its composition comprises: the dc bus capacitor pre-charge circuit, it is characterized in that: an end of described dc bus capacitor pre-charge circuit is the end of incoming cables, the other end of described dc bus capacitor pre-charge circuit connects reactor, described connection reactor connects current transformer IGBT, described current transformer IGBT connects dc bus capacitor, and described dc bus capacitor is a leading-out terminal.
2. the precharging circuit of voltage type active electric-power filter according to claim 1 and active reacance generator is characterized in that: described dc bus capacitor pre-charge circuit is to be connected with pre-charge resistance by three miniature circuit breakers to be formed in parallel with lead-in circuit breaker more afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201009826U CN201608529U (en) | 2009-09-28 | 2009-09-28 | Precharge circuit of voltage-type active power filter and active static-var generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201009826U CN201608529U (en) | 2009-09-28 | 2009-09-28 | Precharge circuit of voltage-type active power filter and active static-var generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201608529U true CN201608529U (en) | 2010-10-13 |
Family
ID=42953230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201009826U Expired - Lifetime CN201608529U (en) | 2009-09-28 | 2009-09-28 | Precharge circuit of voltage-type active power filter and active static-var generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201608529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668841A (en) * | 2020-06-28 | 2020-09-15 | 上海兆铄科技有限公司 | Pre-charging resistor and damping resistor integrated device in active power filter |
-
2009
- 2009-09-28 CN CN2009201009826U patent/CN201608529U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668841A (en) * | 2020-06-28 | 2020-09-15 | 上海兆铄科技有限公司 | Pre-charging resistor and damping resistor integrated device in active power filter |
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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: TIANJIN WEIHAN ELECTRIC CO., LTD. Free format text: FORMER OWNER: HARBIN WEIHAN ELECTRIC EQUIPMENT CO., LTD. Effective date: 20150710 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150710 Address after: 300308 No. 121 East ten, Tianjin Airport Economic Zone Patentee after: The vast electric Co., Ltd of Tianjin prestige Address before: 150700 No. 25 Bohai Road, cottage area, Harbin Development Zone, Heilongjiang, China Patentee before: Harbin Weihan Electric Equipment Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300308 No. 121 East ten, Tianjin Airport Economic Zone Patentee after: TIANJIN WEIHAN ELECTRIC CO., LTD. Address before: 300308 No. 121 East ten, Tianjin Airport Economic Zone Patentee before: The vast electric Co., Ltd of Tianjin prestige |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101013 |