Title :
Design of 2MW/10kV cascaded power conversion system
Author :
Ling Zhi-Bin ; Cao Yang ; Ma Qin-Dong ; Guo Hai-Feng ; Zhang Bai-hua ; Lu Zhi-Gang
Author_Institution :
Key Lab. of Control of Power Transm. & Conversion, Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
Cascaded power conversion system was used in battery energy storage system. It can be connected to medium-voltage grid directly and expanded to larger capacity easily. Without 50Hz booster transformer, medium voltage cascaded power conversion system can reduce power loss. In 2011, the China Southern Power Grid launched the project of 2MW/10kV battery energy storage system. In this paper, the design requirement of the cascaded power conversion system, main circuit topology and power unit topology were described. Then parameters of key part were designed, and power loss was analyzed. Besides, a prototype was built to verify the feasibility of the design.
Keywords :
energy storage; power conversion; power grids; China Southern Power Grid; battery energy storage system; cascaded power conversion system; design requirement; main circuit topology; medium-voltage grid; power 2 MW; power loss; power unit topology; voltage 10 kV; Batteries; Capacitors; Inductors; Insulated gate bipolar transistors; Power conversion; Switching frequency; Batteries Energy storage; Distributed power generation; Power control; Power conversion; Power system stability; Pulse width modulation converters; Smart grids; power dissipation;
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7049141
