摘要
多电平逆变器输出的零序电压对电机的运行性能和老化均存在严重威胁,故抑制逆变器输出的零序电压对优化电机的运行状态和电机的保养有实际价值。为了抑制零序电压,本文通过分析n级逆变器的零序电压分布规律,给出了n级逆变器的零序电压优化调制算法。该方法在不增加任何硬件的基础上,使得输出的零序电压被控制在最小变化范围,同时保证输出波形的质量。最后的仿真和实验结果表明了本文的理论分析以及所提出的抑制零序电压方法的正确性和可行性。
Zero order voltage of the multilevel inverter is a serious threat to the performance and the aging of the motor, so restraining zero order voltage to optimize the motor running state and its maintenance has practical value. In order to restrain zero order voltage, this paper analyzes the distribution rule of zero order voltage for n-cell inverters and proposes a optimal modulation algorithm. The proposed algorithm, without adding any hardware, makes zero order voltage change within the minimum range, while it can ensure the quality of output waveform. Finally, the simulation and experimental results prove that the theoretical analysis of the proposed algorithm on restraining zero order voltage is correct and feasible.
出处
《电工技术学报》
EI
CSCD
北大核心
2013年第6期158-164,共7页
Transactions of China Electrotechnical Society
基金
江西省教育厅科技资助项目(GJJ13767)
关键词
多电平
空间矢量调制
零序电压
优化
Multilevel
space vector modulation（SVM）
zero order voltage
optimization
