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飞轮储能系统容错运行的研究
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2010-02-21
王敏
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本文分析了飞轮储能系统易发生的四种电气故障，提出了改进的各相电流独立控制的容错拓扑。对比传统的电机中性点与逆变器直流端中点相连的容错拓扑，改进的拓扑在发生驱动电机绕组开路故障或逆变器器件单管发生开路、短路故障的情况下，系统仍能持续稳定地运行。本文对提出的容错拓扑及控制策略做了详细分析并给出仿真结果。
Abstract：The paper analyzes four common electrical faults in flywheel energy storage system (FESS). On the basis of analyzing the advantages and disadvantages of a traditional fault-tolerant topology with leading-out mode of neutral point access to the center point of the DC bus, an improved fault-tolerant topology and operation strategy with phase currents separately controlled are presented. Whenever one phase open-circuit winding fault, open transistor fault or shorted transistor fault occurs, FESS still works stably. The improved topology and control schemes are analyzed in detail, and proved by simulation results.
关键字：飞轮储能系统；容错；电流控制
Keywords：Flywheel energy storage system; fault-tolerant; current regulation
Abstract：The paper analyzes four common electrical faults in flywheel energy storage system (FESS). On the basis of analyzing the advantages and disadvantages of a traditional fault-tolerant topology with leading-out mode of neutral point access to the center point of the DC bus, an improved fault-tolerant topology and operation strategy with phase currents separately controlled are presented. Whenever one phase open-circuit winding fault, open transistor fault or shorted transistor fault occurs, FESS still works stably. The improved topology and control schemes are analyzed in detail, and proved by simulation results.
关键字：飞轮储能系统；容错；电流控制
Keywords：Flywheel energy storage system; fault-tolerant; current regulation
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