差接三角形12脉自耦变压整流器调压技术

doi:10.19595/j.cnki.1000-6753.tces.170241

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Abstract This paper studied on voltage regulation technology of 12-pulse auto-transformer rectifier unit (ATRU), and presented a delta-connected structure that achieved a wide range of ATRU output voltage. By using middle taps in primary winding and setting the number of winding precisely, auto-transformer outputs two groups of three-phase voltage vector with 30° phase difference. These two three-phase voltages converted into DC voltage through two rectifier bridges. ATRU output voltage could be regulated by changing the number and configuration of auto-transformer winding. In this paper, the turn ratio of winding was deduced and expressed by voltage ratio of auto-transformer. Further, the expressions of input current, auto-transformer kilovoltampere rating were calculated and validated by simulations. The changes of kilovolt ampere rating with different voltage ratios are analyzed. The experiment of a principle prototype was carried out to verify the correctness of the design analysis.

Key words： Multi-pulse rectifier auto-transformer voltage regulation kilovolt ampere rating

Received: 09 March 2017 Published: 22 June 2018

PACS:

TM461.5

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	Articles by authors
	Jiang Fan
	Ge Hongjuan
	Li Nan
	Yang Guang
	Zhou Jiemin

Cite this article:

Jiang Fan,Ge Hongjuan,Li Nan等. Voltage Regulation Technology of Delta-Connected 12-Pulse Auto-Transformer Rectifier[J]. Transactions of China Electrotechnical Society, 2018, 33(12): 2767-2776.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170241 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I12/2767

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