Pre-charge control method

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United States of America Patent

PATENT NO 9882502
SERIAL NO

15399598

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Abstract

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A pre-charge control method for a hybrid multilevel power converter comprises steps of: (a) controlling access of the current-limiting resistor unit, limiting current from the AC power via the current-limiting resistor unit, and outputting the current; (b) controlling the second capacitor unit to bypass, and charging the first capacitor unit; (c) controlling the access of the second capacitor unit when the first capacitor unit is charged to a third preset voltage, and charging the first and second capacitor units at the same time; (d) controlling the first capacitor unit to bypass when the second capacitor unit is charged to a fourth preset voltage, or the first capacitor unit is charged to a first preset voltage, and charging the second capacitor unit; and (e) controlling the access of the first capacitor units and the current-limiting resistor unit to bypass when the second capacitor unit is charged to a second preset voltage.

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Patent Owner(s)

Patent OwnerAddress
DELTA ELECTRONICS (SHANGHAI) CO LTD1F&7F&8F BUILDING 1 NO 1675 HUADONG ROAD PUDONG SHANGHAI 201209

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hu, Zhiming Shanghai, CN 21 72
Shen, Dingkun Shanghai, CN 4 10
Tian, Wei Shanghai, CN 182 1358
Wei, Lan Shanghai, CN 26 84
Xie, Wei Shanghai, CN 138 659
Xu, Wei Shanghai, CN 934 8439
Ying, Jianping Shanghai, CN 127 1345
Zheng, Jianfei Shanghai, CN 15 44

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