本文分析了飛輪儲能系統(tǒng)易發(fā)生的四種電氣故障，提出了改進(jìn)的各相電流獨立控制的容錯拓?fù)?。對比傳統(tǒng)的電機(jī)中性點與逆變器直流端中點相連的容錯拓?fù)?，改進(jìn)的拓?fù)湓诎l(fā)生驅(qū)動電機(jī)繞組開路故障或逆變器器件單管發(fā)生開路、短路故障的情況下，系統(tǒng)仍能持續(xù)穩(wěn)定地運行。本文對提出的容錯拓?fù)浼翱刂撇呗宰隽嗽敿?xì)分析并給出仿真結(jié)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.
關(guān)鍵字：飛輪儲能系統(tǒng)；容錯；電流控制
Keywords：Flywheel energy storage system; fault-tolerant; current regulation