电压源逆变器死区对基液电压相移影响分析  

Analysis of Effect of Dead Time on Fundamental Voltage Phase Shift in Voltage Source Inverter

作　　者：侯孝涵 常中科 杨喜军[1] 姜建国[1] 陈圣泽 江剑峰 Hou Xiaohan;Chang Zhongke;Yang Xijun;Jiang Jianguo;Chen Shengze;Jiang Jianfeng

机构地区：[1]上海交通大学电力传输与功率变换控制教育部重点实验室 [2]国网上海市电力公司电力科学研究院

出　　处：《变频器世界》2020年第11期51-66,共16页The World of Inverters

摘　　要：电压源逆变器(VSI)同一桥臂功率开关切换时,需要设置死区时间。死区作用期间,负载属于失控状态,会引起输出电压幅相异常问题。针对三相VSI-阻感串联负载系统,给出多种情况下死区时间引起输出基波电压相移的仿真分析,并提出三相VSI-永磁同步电动机(PMSM)传动系统的基波电压相位补偿方法,并给出一种具有相位补偿功能、占空比恒定的三相VSI-PMSM传动系统的功率电路。上述相位补偿方法为改善PMSM转子定位精度提供了一种参考。The dead time should be arranged when the power switches in the same bridge arm of voltage source inverter(VSI)are being switched.During the dead time,the load is out of control,which will cause the abnormal amplitude and phase of output voltage.Aiming at the three-phase VSI-resistance inductanee series load system,the simulation analysis of the output fun dame ntal voltage phase shift caused by dead time under various conditions is give n,and the fun dame ntml voltage phase compe nsati on method of three-phase VSI-perma nent magnet synchronous motor(PMSM)drive system is proposed,and a power circuit of three-phase VSI-PMSM drive system with phase compensation function and constant duty cycle is given.The above-mentioned phase compensation method provides a reference for improving the positioning accuracy of PMSM rotor.

关 键 词：电压源逆变器 死区影响 基波电压相移 永磁同步电机转子定位 

分 类 号：TM354[电气工程—电机]