五相三電平逆變器最小開關(guān)損耗SVPWM研究
上傳時間:2010/7/20 15:21:42
摘要:本文針對五相永磁同步電動機(jī),構(gòu)建了三電平逆變器供電的調(diào)速系統(tǒng)。在對五相三電平逆變器的電壓空間矢量進(jìn)行詳細(xì)分析的基礎(chǔ)上,通過合理選擇冗余矢量,提出了五相三電平逆變器最小開關(guān)損耗SVPWM(MSLSVPWM)控制方法。該控制方法開關(guān)損耗最小,并可有效降低開關(guān)器件的最大開關(guān)電流,并通過仿真實(shí)驗(yàn)對該控制算法進(jìn)行了驗(yàn)證。
敘詞:五相三電平逆變器 開關(guān)損耗 MSLSVPWM 永磁同步電機(jī)
Abstract:The paper, focusing on five-phase permanent magnet synchronous electromotor, constructs speed-adjustment system for power supply of three-level inverter. Based on detailed analysis on the voltage space vector of five-phase three-level inverter and by reasonably selecting surplus vector, the author advances control strategy of minimal swtich wastage SVPWMMSLSVPWM for five-phase three-level inverter. The control strategy can minimize the wastage of switch and in the meantime can lower max switch current of switch components. The author tests the control arithmetic by simulated experiments.
Keyword:Five-phase Three-level Inverter Switch Wastage MSLSVPWM Permanent Magnet Synchronous Electromotor
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