基于改进的SVPWM电机共模电压抑制  

Inhibition of Common-mode Voltage for Motor Based on Improved SVPWM

作　　者：蔡志远[1] 刘贵全[1,2] 白保东[1] 陈德志[1] CAI Zhi-yuan LIU Gui-quan BAI Bao-dong CHEN De-zhi(Special Electrical Machinery and High-voltage Apparatus Key Lab of Ministry of Education, Shenyang University of Technology, Shenyang 110870, China)

机构地区：[1]沈阳工业大学,教育部特种电机与高压电器重点实验室,辽宁沈阳110870 [2]抚顺煤矿电机有限责任公司,辽宁抚顺113008

出　　处：《电力电子技术》2017年第5期12-13,30,共3页Power Electronics

基　　金：国家自然科学基金(51577122);教育部创新团队项目(IRT1072)

摘　　要：提出一种改进的空间矢量脉宽调制(SVPWM)技术抑制变频调速系统共模电压的方案。该调制技术以调速系统输出共模电压最小为目标,直接通过三相电压对扇区的相邻空间矢量作用时间及处于新扇区的条件进行计算与判断,将调制扇区从6个降低到3个,减少了扇区间过渡的影响。重点讨论了该算法的原理及实现过程。仿真及实验验证了所提方法的有效性。An improved space vector pulse width modulation （SVPWM） technique which used for reducing the comm- on-mode voltage of variable frequency speed regulation system is proposed.The minimum output common-mode voltage of the speed control system is designed as the target by using the modulation technique.The operational time of the adjacent space vectors of sector and the condition under new sector are calculated and determined according to the three-phase voltage.The number of modulation sector has been fallen from 6 to 3.The influence of transition sectors has decreased.The theory and the process of this algorithm have been discussed.Simulation and experiment resuits verify the effectiveness of the proposed method.

关 键 词：空间矢量脉宽调制 共模电压 抑制 

分 类 号：TN76[电子电信—电路与系统]