船电技术
船電技術
선전기술
2012年
7期
4-7
,共4页
吕飞%余凤豪%张松涛%秦福星
呂飛%餘鳳豪%張鬆濤%秦福星
려비%여봉호%장송도%진복성
多电平变换器%可重构%冗余%开关状态
多電平變換器%可重構%冗餘%開關狀態
다전평변환기%가중구%용여%개관상태
multi-level inverter%reconfiguration%redundancy%switch state
多电平变换技术因具有输出波形畸变小、器件电压应力低以及电磁干扰低等优点而广泛应用于大容量电力电子变换装置。随着电平数的增多,装置拓扑结构和控制复杂性增加,使变换装置的可靠性降低。本文改进通用型多电平变换装置为对象,采用更改触发信号,重构冗余的开关状态,代替故障器件,实现期望的输出,仿真结果验证了所采用方法的有效性。
多電平變換技術因具有輸齣波形畸變小、器件電壓應力低以及電磁榦擾低等優點而廣汎應用于大容量電力電子變換裝置。隨著電平數的增多,裝置拓撲結構和控製複雜性增加,使變換裝置的可靠性降低。本文改進通用型多電平變換裝置為對象,採用更改觸髮信號,重構冗餘的開關狀態,代替故障器件,實現期望的輸齣,倣真結果驗證瞭所採用方法的有效性。
다전평변환기술인구유수출파형기변소、기건전압응력저이급전자간우저등우점이엄범응용우대용량전력전자변환장치。수착전평수적증다,장치탁복결구화공제복잡성증가,사변환장치적가고성강저。본문개진통용형다전평변환장치위대상,채용경개촉발신호,중구용여적개관상태,대체고장기건,실현기망적수출,방진결과험증료소채용방법적유효성。
Multi-level inverter with low voltage stress on power switches, low harmonics and EMI is widely used in large capacity power equipments due to its advantages, including. However, with level number increases, the multilevel topology and control method become complicated, which decrease the inverter＇s reliability. This paper takes improvement of general multilevel inverter as object, changing the trigger and switch state of reconfigurable redundancy and replacing fault devices to achieve the desired output. The simulation results verify the effectiveness of the method employed.
