公开(公告)号：US20140177299A1

公开(公告)日：2014-06-26

申请号：US14107236

申请日：2013-12-16

申请人： Beijing BOE Energy Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

发明人： Xuyang Wang ,  Hangbing Song ,  Xiaoyan Han ,  Ming Cui

IPC分类号： H02M7/537

CPC分类号： H02J3/382 ,  H02M7/48 ,  H02M2001/007 ,  Y02E10/563

摘要： An inverter and a grid-connected power generation system are provided to efficiently reduce the electric energy loss due to a DC boosted circuit, improve the efficiency of a PV system, and increase lifetime of the inverter. The inverter comprises: a DC boosted circuit; an inversion circuit connected to a output end of the DC boosted circuit; and a bypass circuit, of which an input end is connected to a positive electrode input end of the DC boosted circuit, and an output end is connected to a positive electrode output end of the DC boosted circuit. When a DC input voltage applied to the DC boosted circuit is higher than a voltage required by the inversion circuit, the bypass circuit is turned on, and the DC input voltage is supplied to the inversion circuit through the bypass circuit; and when the DC input voltage is lower than the voltage required by the inversion circuit, the bypass circuit is turned off, and the DC input voltage is amplified by the DC boosted circuit and then supplied to the inversion circuit.

摘要翻译： 提供逆变器和并网发电系统，以有效降低由直流升压电路引起的电能损耗，提高光伏系统的效率，并增加逆变器的使用寿命。 逆变器包括：直流升压电路; 连接到直流升压电路的输出端的反相电路; 以及旁路电路，其输入端连接到直流升压电路的正极输入端，输出端连接到直流升压电路的正极输出端。 当施加到直流升压电路的直流输入电压高于反相电路所需的电压时，旁路电路导通，通过旁路电路将直流输入电压提供给反相电路; 当直流输入电压低于反相电路所要求的电压时，旁路电路被断开，直流输入电压被直流升压电路放大，然后提供给反相电路。