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High potential direct current (DC) voltage energy-taking power supply

A technology of DC voltage and energy-fetching power supply, which is applied in the direction of converting DC power input into DC power output, electrical components, adjusting electrical variables, etc. The power supply can not work normally, etc., to achieve the effect of high reliability, small size and fast startup speed.

Active Publication Date: 2014-03-12
CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of short-term faults in the system, the power supply will not work normally, and short-term faults (fault time generally not exceeding 1s) are likely to exist in the AC system, and it is difficult for the power supply to support more than 1s
If the AC voltage energy harvesting method is used alone, it will affect the operational reliability of power electronic devices

Method used

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  • High potential direct current (DC) voltage energy-taking power supply
  • High potential direct current (DC) voltage energy-taking power supply
  • High potential direct current (DC) voltage energy-taking power supply

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Embodiment Construction

[0050] 1. Technical difficulties of high potential DC voltage energy harvesting power supply

[0051] The technical difficulties of high potential DC voltage energy harvesting power supply are as follows:

[0052] 1) The IGBT drive circuit and unit controller of the unit converter are at high potential, and the electrical isolation problem of high potential energy acquisition must be solved;

[0053] 2) The electromagnetic environment of the unit converter of STATCOM is harsh. On the one hand, the large current and high field strength of the transmission line will cause greater electromagnetic interference to the electronic circuit; on the other hand, the fast switching process of the IGBT of the unit converter will also A large amount of strong electromagnetic interference is generated, so the anti-interference design problem of the DC voltage energy harvesting power supply must be solved;

[0054] 3) In the range where the DC voltage input varies greatly, the DC voltage ene...

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Abstract

The invention provides a high potential direct current (DC) voltage energy-taking power supply which is good in electrical isolation performance, and is capable of meeting the requirement of power supply of a high potential electronic circuit and stably working under the condition of wider DC input voltage range; and the DC voltage energy-taking power supply is rapid in starting speed so as to maintain stable rated output under the condition of lower DC voltage input, is good in anti-interference performance so as to be capable of normally working in the severe electromagnetic environment and is small in volume so as to meet the compact design of a device.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a high-potential DC voltage energy-taking power supply. Background technique [0002] With the implementation of my country's "West to East Power Transmission" strategy and the expansion of the scale of the interconnected grid, the problem of voltage stability is particularly prominent. The main problem of the super-large load center formed in the southeast coast is that the dynamic reactive power support is increasingly insufficient. In the past two decades, large-scale power outages caused by voltage stability and voltage collapse have occurred in many parts of the world, and voltage collapse accidents have also occurred many times in my country. The use of Static Synchronous Compensator (STATCOM, Static Synchronous Compensator) is one of the effective measures to solve these problems. It has superior performance in improving line transmission capacity, d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335H02M1/44H02M1/36
Inventor 韩天绪王轩袁蒙王柯杨武帝武守远滕乐天熊超英傅坚
Owner CHINA EPRI SCIENCE & TECHNOLOGY CO LTD
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