Two-stage converter and method for starting the same, LLC converter, and application system

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United States of America

PATENT NO 11239746
APP PUB NO 20200403496A1
SERIAL NO

16783310

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Abstract

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A two-stage converter, a method for starting the two-stage converter, an LLC converter, and an application system are provided. A controller of the LLC converter of the two-stage converter first controls a main circuit of the LLC converter to perform hiccup charging on a direct current bus of a later-stage converter at a preset interval, so that the direct current bus voltage of the later-stage converter gradually increases, until an auxiliary power supply of the later-stage converter starts to operate, to supply power to the controller of the later-stage converter. After the controller of the later-stage converter reports the detected direct current bus voltage, the controller of the LLC converter determines whether the output voltage of the LLC converter increases to a hiccup starting voltage. If so, the controller of the LLC converter controls the main circuit to operate in a hiccup voltage stabilization phase.

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Patent Owner(s)

  • SUNGROW POWER SUPPLY CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Mingda Hefei, CN 25 420
Wang, Xinyu Hefei, CN 95 379
Zhao, Tao Hefei, CN 364 10640
Zhuang, Fushuai Hefei, CN 3 0
Zhuang, Jiacai Hefei, CN 22 38
Zhuang, Yuan Hefei, CN 34 493

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