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1. 发明公开

EP2905889A1 Power conversion apparatus and control method thereof 有权转让
标题翻译： Leistungsumwandlungsvorrichtung und Steuerverfahrendafür
公开(公告)号：EP2905889A1
公开(公告)日：2015-08-12
申请号：EP15150339.8
申请日：2015-01-07
申请人： Hitachi, Ltd.
发明人： Ishikura, Yuki , Bandou, Akira , Kokura, Shin , Ichinose, Masaya , Ishikawa, Masakazu , Fujita, Ryou
IPC分类号： H02M7/79 , H02M7/483
CPC分类号： H02M7/483 , H02M1/0845 , H02M2001/0003 , H02M2007/4835
摘要： A power conversion apparatus (116a) includes a cell (105) which includes an energy storage element (204) and a switching device (202, 203) and which outputs either of a positive or negative voltage and a zero voltage relying on a voltage of the energy storage element by on or off of the switching device; an arm (104) in which one or a plurality of the cells (105) are serially connected; a power conversion circuit (103) which includes the arm (104) in plurality and which is capable of converting an alternating current to a direct current or converting a direct current to an alternating current; a central control device (107) which collectively controls each of the cells (105); a plurality of intermediate control devices (113) which are daisy-chain connected to the central control device (107) through an optical fiber cable (111); and a cell control device (213) which is connected to the intermediate control device (113) and which controls each of the cells (105). To AC terminals U, V, and W of each phase, one end of each serial circuit is connected. To DC terminals P and N, the other end of each of the serial circuits is connected in parallel.
摘要翻译：电力转换装置（116a）包括具有能量存储元件（204）和开关元件（202,203）的电池单元（105），并且根据电力变换装置（102,203）的电压，输出正负电压和零电压所述能量存储元件通过所述开关装置的接通或断开; 臂（104），其中一个或多个单元（105）串联连接; 功率转换电路（103），其包括多个臂（104），其能够将交流电转换成直流电流或将直流电转换成交流电; 共同控制每个单元（105）的中央控制装置（107）; 多个中间控制装置（113），其通过光纤电缆（111）与所述中央控制装置（107）串联连接; 以及连接到所述中间控制装置（113）并控制所述单元（105）中的每一个的单元控制装置（213）。对于每相的交流端子U，V和W，连接每个串联电路的一端。对于直流端子P和N，串联电路的另一端并联连接。

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