永磁电机无位置传感器控制死区补偿策略
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摘要
空间矢量脉宽调制(SVPWM)控制中,逆变器存在死区效应和零电流钳位效应,导致电流电压波形畸变,造成转速转矩脉动,控制性能降低。迭代控制死区补偿策略无需检测电流极性,同步旋转坐标系下,构造反电动势观测器得到实际电压e^d、e^q,矢量控制输出期望电压ed、eq,通过迭代算法将死区效应造成的误差前馈到期望值,补偿死区效应的影响,提高系统控制性能。仿真和实验证明了理论分析的正确性和有效性。
In the control of space vector pulse width modulation( SVPWM),dead-time effect and zero current clamping effect exist,which leads to the distortion of current and voltage waveform,ripples in speed and torque,and reduction of system performance. An iterative compensation method without detecting current polarity is proposed for the dead time effect. In synchronous rotating coordinate system,the position observer calculated the actual anti electromotive force e^d、e^q. Vector control acquired the reference voltages ed、eq. The error resulted from dead-time effect was feed-forwarded to the reference voltage through the iterative control. Simulation and experiments results prove that the proposed algorithm can compensate the dead-time effect and improve the system control performance effectively.
In the control of space vector pulse width modulation( SVPWM),dead-time effect and zero current clamping effect exist,which leads to the distortion of current and voltage waveform,ripples in speed and torque,and reduction of system performance. An iterative compensation method without detecting current polarity is proposed for the dead time effect. In synchronous rotating coordinate system,the position observer calculated the actual anti electromotive force e^d、e^q. Vector control acquired the reference voltages ed、eq. The error resulted from dead-time effect was feed-forwarded to the reference voltage through the iterative control. Simulation and experiments results prove that the proposed algorithm can compensate the dead-time effect and improve the system control performance effectively.
引文
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[3]HUANG Q,NIU W.Analysis on dead-time compensation method for direct drive PMSM servo system[J].International Conference on Electrical Machines and Systems,2013:1271-1276.
[4]MUNOZ AR,LIPO TA.On lined dead-time compensation technique for open loop PWM VSI drives[J].IEEE Transactions on Power Electronics,1999,14(4):683-689.
[5]潘海鸿,陈斌,陈琳,等.考虑零电流嵌位的永磁同步电机死区效应补偿方法[J].电机与控制应用,2010,37(10):1-5.PAN Haihong,CHEN Bin,CHEN Lin,et al.Dead-time compensation strategy for permanent magnet synchronous motor drive taking zero current clamp into account[J].Electric Machines and Control Appliation,2010,37(10):1-5.
[6]LEGGATE D,KERKMAN RJ.Pulse-based dead-time compensator for PWM voltage inverters[J].IEEE Transactions on Industrial Electronics,1997,44(2):191-197.
[7]周华伟,温旭辉,赵峰,等.一种新颖的电压源逆变器自适应死区补偿策略[J].中国电机工程学报,2011,31(24):26-32.ZHOU Huawei,WEN Xuhui,ZHAO Feng,et al.A novel adaptive dead-time compensation strategy for VSI[J].Proceedings of the CSEE,2011,31(24):26-32.
[8]Ueda R,Sonoda T,Takata S.Experimental results and their simplified analysis on instability problem in PWM inverter induction motor drives[J].Industry Applications IEEE Transactions on,1989,25(1):86-95.
[9]孙承波,宋丹,陈国呈,等.基于锁相环空调直流压缩机矢量控制系统[J].电工技术学报.2009,24(4):78-84.SUN CB,SONG Dan,CHEN Guocheng,et al.Vector control for air-conditioner DC compressor based on PLL[J].Transactions of China Electro-technical Society.2009,24(4):78-84.
[10]ARIMOTO S,KAWAMURA S,et al.Learning control theory for dynamic systems[J].IEEE Conference on Decision and Control,1985,1375-1380.
[2]YOSHIHIRO Mura,TOMOFUMI Watanabe,HARUMTTU Iwasaki.Waveform distortion and correction circuit for PWM inverters with switching lag-times[J].IEEE Transactions on Industry Application,1987,IA-23(5):881-886.
[3]HUANG Q,NIU W.Analysis on dead-time compensation method for direct drive PMSM servo system[J].International Conference on Electrical Machines and Systems,2013:1271-1276.
[4]MUNOZ AR,LIPO TA.On lined dead-time compensation technique for open loop PWM VSI drives[J].IEEE Transactions on Power Electronics,1999,14(4):683-689.
[5]潘海鸿,陈斌,陈琳,等.考虑零电流嵌位的永磁同步电机死区效应补偿方法[J].电机与控制应用,2010,37(10):1-5.PAN Haihong,CHEN Bin,CHEN Lin,et al.Dead-time compensation strategy for permanent magnet synchronous motor drive taking zero current clamp into account[J].Electric Machines and Control Appliation,2010,37(10):1-5.
[6]LEGGATE D,KERKMAN RJ.Pulse-based dead-time compensator for PWM voltage inverters[J].IEEE Transactions on Industrial Electronics,1997,44(2):191-197.
[7]周华伟,温旭辉,赵峰,等.一种新颖的电压源逆变器自适应死区补偿策略[J].中国电机工程学报,2011,31(24):26-32.ZHOU Huawei,WEN Xuhui,ZHAO Feng,et al.A novel adaptive dead-time compensation strategy for VSI[J].Proceedings of the CSEE,2011,31(24):26-32.
[8]Ueda R,Sonoda T,Takata S.Experimental results and their simplified analysis on instability problem in PWM inverter induction motor drives[J].Industry Applications IEEE Transactions on,1989,25(1):86-95.
[9]孙承波,宋丹,陈国呈,等.基于锁相环空调直流压缩机矢量控制系统[J].电工技术学报.2009,24(4):78-84.SUN CB,SONG Dan,CHEN Guocheng,et al.Vector control for air-conditioner DC compressor based on PLL[J].Transactions of China Electro-technical Society.2009,24(4):78-84.
[10]ARIMOTO S,KAWAMURA S,et al.Learning control theory for dynamic systems[J].IEEE Conference on Decision and Control,1985,1375-1380.