Multi-pulse constant voltage transformer for variable speed drive in cooling device application example

Japanese Patent JP6353053

B2

A multi-pulse transformer with multiple taps provides a constant magnitude voltage output to a variable speed chiller's compressor motor over a range of input voltages. The 3-phase transformer includes primary windings and a plurality of secondary windings. The secondary windings are electromagnetically coupled with the associated primary winding. The primary windings include taps for receiving multiple input AC voltages and the secondary windings have a single output terminal for supplying a predetermined output voltage which, after rectification produces a DC multi-pulse waveform for powering a DC link of a variable speed drive. Alternatively the 3-phase transformer includes multiple taps on the secondary windings. Each of the primary windings has a terminal for receiving an input AC voltage. The taps of the secondary windings provide an output voltage that is converted to a multi-pulse waveform for powering a DC link of a variable speed drive.

Wu, Zichao
Hansen, John See

JP2016539066A

July 04, 2018

January 21, 2015

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Johnson Controls Technology Company

H01F30/12; H02M7/12; H02M5/44; H02M7/06; H02M7/48

JP11122943A
JP2011502459A
JP56065479U
JP2009171684A

WO2012129980A1

単相・三相・特殊低圧トランスのコーナー,[online],日本,Internet Archive,2010年 2月 5日,[retrieved on 2017-07-26] retrieved from the Internet,URL,http://web.archive.org/web/20100205100126/http://www.sanwa-denki.com:80/sale/tr/tr.htm

Shinjiro Ono
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Shogo Nakamura

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