刘宝英,朴成洙.基于简化SVPWM的逆变器死区效应分析与补偿[J].电测与仪表,2012,49(5):71-75. LIU Bao-ying , PIAO Cheng-zhu.Dead Time Effect Analysis and Compensation of Inverter Based on Simplified SVPWM[J].Electrical Measurement & Instrumentation,2012,49(5):71-75.
基于简化SVPWM的逆变器死区效应分析与补偿
Dead Time Effect Analysis and Compensation of Inverter Based on Simplified SVPWM
Error voltage vectors caused by dead-time effects of PWM inverter were given in this paper.In order to make practical conduct time equal to ideal given time of switching devices,a dead-time compensation method based on time was proposed,simple arithmetic was obtained with the characteristic of space vector PWM(SVPWM).A dead-time compensation method based on voltage was proposed also to eliminate error voltage vector.A new method which independently regulates the dead-time of three inverter legs and the value of dead time is adjusted on-line by the value of corresponding phase current and direct compensation to the simplified SVPWM algorithm is proposed.Simulation results show that the proposed scheme can effectively improve the current level and phase of sine wave offset,and the algorithm is simple and has practical engineering value.
