A Novel Method for Dead Time Compensation Based on the Sliding Mode Observer

摘要：

　　In this paper,a novel on-line dead time compensation method is proposed for the permanent magnet synchronous motor drive system.Using a sliding mode observer,this method does not require any additional hardware circuit and off-line experimental measurements.The output voltage errors caused by the dead time and nonideal switching characteristics of power devices are considered disturbance voltages.Disturbance voltages are online estimated based on the sliding mode observer and fed to the reference voltages to compensate the impact of the dead time.This method can avoid taking the zero-current clamping phenomenon into account.The proposed method is applied to permanent magnet synchronous motor system and implemented by MATLAB/Simulink simulation.The simulation results indicate that the compensation method can effectively improve the motor current waveforms and the inverter output performance.

关键词： dead time effects sliding mode observer permanent magnet synchronous motor on-line compensation

作者: Xin-Yuan Li Hong-Lin Ou Yang Chao Meng Chun Yang

作者单位: College of Electrical and Information Engineering, Hunan University, Changsha, China China South Industries Research Academy, Beijing, China

会议类型: 国际会议

会议名称: 第16届机电一体化技术国际会议

会议地点: 天津

会议语种:英文

页码: 538-542

在线出版日期: 2012-10-16（万方平台首次上网日期，不代表论文的发表时间）