基于关断相二次续流的BLDC无位置传感器控制
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摘要
分析了无刷直流(BLDC)电机反电动势过零与关断相二次续流电流的关系,讨论了同一相相邻2次关断期间二次续流电流及其峰值的特性,分别推导了超前/滞后换相偏差与关断相电流峰值之间的关系。在此基础上,提出了一种无刷直流电机换相与换相偏差校正的控制方法。通过仿真验证了该控制方法的可行性,并提高了换相及相位校正性能。
The relationship between the zero-crossing of the back EMF and the secondary freewheeling current of the brushless DC(BLDC)motor was analyzed,and the characteristics of the secondary freewheeling current and its peak value were discussed. The discipline between the forward/lagged commutation deviation and the peak value of the off phase current was deduced. On this basis,a commutation and deviation correction control method was proposed for brushless DC motors. The feasibility of the control method was verified by simulation experiments,and the commutation and correction performance were improved.
The relationship between the zero-crossing of the back EMF and the secondary freewheeling current of the brushless DC(BLDC)motor was analyzed,and the characteristics of the secondary freewheeling current and its peak value were discussed. The discipline between the forward/lagged commutation deviation and the peak value of the off phase current was deduced. On this basis,a commutation and deviation correction control method was proposed for brushless DC motors. The feasibility of the control method was verified by simulation experiments,and the commutation and correction performance were improved.
引文
[1] Ogasawara S,Akagi H. An Approach to Position Sensorless Drive for Brushless DC Motors[J]//IEEE Trans. on Industry Applications,1990,27(5):928-933.
[2] Kim T,Kim C,Lyou J. A New Sensorless Drive Scheme for a BLDC Motor Based on the Terminal Voltage Difference[C]//Conference of the IEEE Industrial Electronics Society,2011,6854(5):1710-1715.
[3]李凤祥,徐浩,袁野,等.无刷直流电机无位置传感器转子位置辨识策略[J].电工技术学报,2014,29(12):107-112.
[4] Tae-Hyung K,Ehsani M. Sensorless Control of the BLDC Motors from Near-zero to High Speeds[J]. IEEE Transactions on Power Electronics,2004,19(6):1635-1645.
[5] Baisong L,Ruixia M,Fengchao F,et al. A New Sensorless ControlMethodforBrushlessPermanentMagnetDCMotors[C]//2013 IEEE International Symposium on Sensorless Control for Electrical Drives and Predictive Control of Electrical Drives and Power Electronics(SLED/PRECEDE),2013:1-7.
[6] Dixon J,Rodriguez M,Huerta R. Position Estimator and Simplified Current Control Strategy for Brushless-DC Motors,Using DSP Technology[C]//Conference of the IEEE Industrial Electronics Society,2002,1:590-596.
[7]宋飞,周波,吴小婧.校正无位置传感器无刷直流电机位置信号相位的闭环控制策略[J].中国电机工程学报,2009,29(12):52-57.
[8] Li H,Ning X,Li W. Implementation of a MFAC Based Position Sensorless Drive for High Speed BLDC Motors with Nonideal Back EMF[J]. ISA Transactions,2017,67:348-355.
[9]吴小婧,周波,宋飞.基于端电压对称的无位置传感器无刷直流电机位置信号相位校正[J].电工技术学报,2009,24(4):54-59.
[10] Li H,Zheng S,Ren H. Self-correction of Commutation Point for High-speed Sensorless BLDC Motor with Low Inductance and Nonideal Back EMF[J]. IEEE Transactions on Power Electronics,2017,32(1):642-651.
[11]张前,冯明.基于母线电流的无刷直流电机换相位置优化策略[J].北京航空航天大学学报,2016,42(7):1441-1448.
[2] Kim T,Kim C,Lyou J. A New Sensorless Drive Scheme for a BLDC Motor Based on the Terminal Voltage Difference[C]//Conference of the IEEE Industrial Electronics Society,2011,6854(5):1710-1715.
[3]李凤祥,徐浩,袁野,等.无刷直流电机无位置传感器转子位置辨识策略[J].电工技术学报,2014,29(12):107-112.
[4] Tae-Hyung K,Ehsani M. Sensorless Control of the BLDC Motors from Near-zero to High Speeds[J]. IEEE Transactions on Power Electronics,2004,19(6):1635-1645.
[5] Baisong L,Ruixia M,Fengchao F,et al. A New Sensorless ControlMethodforBrushlessPermanentMagnetDCMotors[C]//2013 IEEE International Symposium on Sensorless Control for Electrical Drives and Predictive Control of Electrical Drives and Power Electronics(SLED/PRECEDE),2013:1-7.
[6] Dixon J,Rodriguez M,Huerta R. Position Estimator and Simplified Current Control Strategy for Brushless-DC Motors,Using DSP Technology[C]//Conference of the IEEE Industrial Electronics Society,2002,1:590-596.
[7]宋飞,周波,吴小婧.校正无位置传感器无刷直流电机位置信号相位的闭环控制策略[J].中国电机工程学报,2009,29(12):52-57.
[8] Li H,Ning X,Li W. Implementation of a MFAC Based Position Sensorless Drive for High Speed BLDC Motors with Nonideal Back EMF[J]. ISA Transactions,2017,67:348-355.
[9]吴小婧,周波,宋飞.基于端电压对称的无位置传感器无刷直流电机位置信号相位校正[J].电工技术学报,2009,24(4):54-59.
[10] Li H,Zheng S,Ren H. Self-correction of Commutation Point for High-speed Sensorless BLDC Motor with Low Inductance and Nonideal Back EMF[J]. IEEE Transactions on Power Electronics,2017,32(1):642-651.
[11]张前,冯明.基于母线电流的无刷直流电机换相位置优化策略[J].北京航空航天大学学报,2016,42(7):1441-1448.