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AssigneeSungrow Power Supply Co., Ltd.
InventorsTao Zhao, Fushuai Zhuang, Xinyu Wang, Jiacai Zhuang, Mingda Wang, Yuan Zhuang
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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.
A method for starting a two-stage converter, applied to a controller of an LLC converter of the two-stage converter, and the method comprising:
An LLC converter of a two-stage converter, comprising:
Dependencies are inferred from the claim text.