CN202261042U - Novel high-voltage high-power frequency converter - Google Patents
Novel high-voltage high-power frequency converter Download PDFInfo
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- CN202261042U CN202261042U CN2011203290648U CN201120329064U CN202261042U CN 202261042 U CN202261042 U CN 202261042U CN 2011203290648 U CN2011203290648 U CN 2011203290648U CN 201120329064 U CN201120329064 U CN 201120329064U CN 202261042 U CN202261042 U CN 202261042U
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Abstract
The utility model discloses a novel high-voltage high-power frequency converter which consists of a novel rectifier phase-shifting transformer, a power unit with a novel pre-charging circuit, a control unit, an input unit, a display, an output unit, a remote communication unit and a protection unit. For the novel high-voltage high-power frequency converter, a low voltage power supply is adopted to pre-charge at the end of the novel rectifier phase-shifting transformer, a high voltage switch is not required and the debugging can be carried out at a low voltage, so that a power supply loop and an operation program are simplified and the novel high-voltage high-power frequency converter is convenient to debug and has good operability and economy; and the novel pre-charging circuit is adopted in the power unit, so that the problem that an input diode rectifier bridge and a bus capacitor of the novel high-voltage high-power frequency converter bear an excessively high di/dt value when being powered on is solved, the reliability and the safety of a system are improved, the cost is low and the novel high-voltage high-power frequency converter is convenient to widely apply. The novel high-voltage high-power frequency converter has more excellent pre-charging performance.
Description
Technical field
The utility model relates to big-power transducer, especially relates to a kind of novel high-pressure big-power transducer.
Background technology
Along with the development of power electronic technology and going deep into of high voltage converter technical research; High-voltage high-power frequency transformator is applied in the drive system of high-power machinery equipment such as blower fan, compressor, water pump increasingly extensively; High-voltage high-power frequency transformator is with its superior performance and good electricity-saving effect; It is more and more favored, demonstrated its market prospects in the ascendant.
But still there are many weak points technically in current high-voltage high-power frequency transformator.Be embodied in: current high-voltage high-power frequency transformator is when last electric control; Generally in the rectification phase shifting transformer, do not establish the low pressure pre-charge circuit; Therefore the high-tension circuit part must be provided with current limiting element and switching device, makes power up complicated, and the impulse current that is frequently powered on; Make high-voltage high-power frequency transformator be very easy to produce fault, greatly reduce the reliability of system.
In addition, because high-voltage high-power frequency transformator is the same with many voltage-type low voltage frequency converters when each start moves; Need set up DC bus-bar voltage earlier, because general high-voltage high-power frequency transformator all is a cascade connection type, its every phase voltage is to be made up of a plurality of power unit cascade outputs; And each separate unit also has many electric capacity, so whole system is when powering on, and huge input impulse current is suppressed to be very necessary; At this moment just need a kind of pre-charge circuit to reduce impulse current urgently; Make its impact be reduced to reasonable range, thereby improve the reliability of system, reduce interference electrical network to electrical network and native system.Current cascaded high-voltage big-power transducer mainly is the more traditional pre-charge circuit that is made up of relay and power resistor; The problem of its existence is: the volume of the relay of high-pressure type is big, cost is higher, machinery gets an electric shock easy loose contact and can produce big noise during action; Simultaneously; Also be prone to take place, thereby influenced the reliability and the fail safe of system owing to current-limiting resistance can not accurately excise the danger that causes fire.
Summary of the invention
The technical problem that the utility model will solve is to improve, innovate to the deficiency and the problem that exist in the background technology, and a kind of more excellent novel high-pressure big-power transducer of pre-charging functions that has is provided.
In order to solve the existing problem of background technology, the technical scheme that the utility model adopts is:
A kind of novel high-pressure big-power transducer is characterized in that: it is made up of novel rectifying phase shifting transformer, the power cell with novel pre-charge circuit, control unit, input unit, display, output unit, telecommunication unit and protected location; The novel rectifying phase shifting transformer is connected with the power cell with novel pre-charge circuit; Power cell with novel pre-charge circuit is connected with control unit; Input unit is connected with control unit respectively with display; The telecommunication unit is connected with control unit, and output unit is connected with control unit respectively with protected location.
The beneficial effect of the utility model is: this novel high-pressure big-power transducer adopts low-tension supply precharge at novel rectifying phase shifting transformer end; Need not high-voltage switch gear; Low pressure can be debugged, and has simplified electric power loop and working procedure, debugs convenience and has good operability and economy; In power cell, adopt novel pre-charge circuit, solved its input diode rectifier bridge and bus capacitor bear too high di/dt value when powering on problem, the reliability and the fail safe that have improved system, with low cost, be convenient to extensive use.This novel high-pressure big-power transducer has more excellent pre-charging functions.
Description of drawings
Fig. 1 is the structural representation of the utility model
Embodiment
As shown in Figure 1, a kind of novel high-pressure big-power transducer comprises novel rectifying phase shifting transformer 1, has power cell 2, control unit 3, input unit 4, display 5, output unit 6, telecommunication unit 7 and the protected location 8 of novel pre-charge circuit; Novel rectifying phase shifting transformer 1 is connected with the power cell with novel pre-charge circuit 2; Power cell 2 with novel pre-charge circuit is connected with control unit 3; Input unit 4 is connected with control unit 3 respectively with display 5; Telecommunication unit 7 is connected with control unit 3, and output unit 6 is connected with control unit 3 respectively with protected location 8.
At first, power supply is 1 power supply of novel rectifying phase shifting transformer through lead, adopts low-tension supply precharge at novel rectifying phase shifting transformer 1 end; Need not high-voltage switch gear; Low pressure can be debugged, and has simplified electric power loop and working procedure, debugs convenience and has good operability and economy; Secondly; Novel rectifying phase shifting transformer 1 is connected with the power cell with novel pre-charge circuit 2; In power cell, adopt novel pre-charge circuit, solved its input diode rectifier bridge and bus capacitor bear too high di/dt value when powering on problem, the reliability and the fail safe that have improved system; With low cost, be convenient to extensive use; Then, connect control unit 3; At last, control unit 3 is connected with input unit 4, display 5, output unit 6, telecommunication unit 7 and protected location 8 respectively, thereby realizes its input, demonstration, output, telecommunication and defencive function.
The utility model protection range relates to all changes form recited above.
Claims (1)
1. novel high-pressure big-power transducer is characterized in that it is made up of novel rectifying phase shifting transformer, the power cell with novel pre-charge circuit, control unit, input unit, display, output unit, telecommunication unit and protected location; The novel rectifying phase shifting transformer is connected with the power cell with novel pre-charge circuit; Power cell with novel pre-charge circuit is connected with control unit; Input unit is connected with control unit respectively with display; The telecommunication unit is connected with control unit, and output unit is connected with control unit respectively with protected location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203290648U CN202261042U (en) | 2011-09-05 | 2011-09-05 | Novel high-voltage high-power frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203290648U CN202261042U (en) | 2011-09-05 | 2011-09-05 | Novel high-voltage high-power frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261042U true CN202261042U (en) | 2012-05-30 |
Family
ID=46122223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203290648U Expired - Lifetime CN202261042U (en) | 2011-09-05 | 2011-09-05 | Novel high-voltage high-power frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994968A (en) * | 2019-11-22 | 2020-04-10 | 华为技术有限公司 | Pre-charging circuit, inverter and power generation system |
-
2011
- 2011-09-05 CN CN2011203290648U patent/CN202261042U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994968A (en) * | 2019-11-22 | 2020-04-10 | 华为技术有限公司 | Pre-charging circuit, inverter and power generation system |
| CN110994968B (en) * | 2019-11-22 | 2021-06-01 | 华为技术有限公司 | Pre-charging circuit, inverter and power generation system |
| US11722001B2 (en) | 2019-11-22 | 2023-08-08 | Huawei Digital Power Technologies Co., Ltd. | Pre-charging circuit, inverter, and power generation system |
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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: GD LONGYUAN ENERGY SAVING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LI JIE Effective date: 20130930 Free format text: FORMER OWNER: ZHAO ZILONG GAO YUAN JIANG SHUNKAI Effective date: 20130930 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 030027 TAIYUAN, SHAANXI PROVINCE TO: 100039 HAIDIAN, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130930 Address after: 100039, room 1, building 16, No. 1205 West Fourth Ring Road, Beijing, Haidian District Patentee after: GUODIAN LONGYUAN ENERGY SAVING TECHNOLOGY CO., LTD. Address before: 030027 Shanxi city of Taiyuan province Jiancaoping District small East Feng Songyuan District 2-2-6 Patentee before: Li Jie Patentee before: Zhao Zilong Patentee before: Gao Yuan Patentee before: Jiang Shunkai |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Jie Document name: Notification of Passing Examination on Formalities |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |