中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2015年
1期
223-230
,共8页
电励磁同步电动机%直接转矩控制%无位置传感器%转子高频脉动电流
電勵磁同步電動機%直接轉矩控製%無位置傳感器%轉子高頻脈動電流
전려자동보전동궤%직접전구공제%무위치전감기%전자고빈맥동전류
electrically excited synchronous motor (ESM)%direct torque control%sensorless%rotor high-frequency ripple current
为了实现直接转矩控制电励磁同步电机(electrically excited synchronous motor，ESM)驱动系统零转速及极低转速时无位置传感器运行，提出一种新型转子位置角观测器。首先在转子回路注入高频脉动电流；其次，为了仅在d轴方向产生定子高频脉动电流，利用电磁转矩闭环在电磁转矩中注入同频率的高频脉动分量；最后借助于锁相环原理观测出转子位置角。利用磁链的电流模型和观测位置角，计算出定子磁链及电磁转矩，并构建无位置传感器直接转矩控制系统。实验结果表明所提无位置传感器驱动系统任何负载时均可以稳定运行于零转速及极低转速。
為瞭實現直接轉矩控製電勵磁同步電機(electrically excited synchronous motor，ESM)驅動繫統零轉速及極低轉速時無位置傳感器運行，提齣一種新型轉子位置角觀測器。首先在轉子迴路註入高頻脈動電流；其次，為瞭僅在d軸方嚮產生定子高頻脈動電流，利用電磁轉矩閉環在電磁轉矩中註入同頻率的高頻脈動分量；最後藉助于鎖相環原理觀測齣轉子位置角。利用磁鏈的電流模型和觀測位置角，計算齣定子磁鏈及電磁轉矩，併構建無位置傳感器直接轉矩控製繫統。實驗結果錶明所提無位置傳感器驅動繫統任何負載時均可以穩定運行于零轉速及極低轉速。
위료실현직접전구공제전려자동보전궤(electrically excited synchronous motor，ESM)구동계통령전속급겁저전속시무위치전감기운행，제출일충신형전자위치각관측기。수선재전자회로주입고빈맥동전류；기차，위료부재d축방향산생정자고빈맥동전류，이용전자전구폐배재전자전구중주입동빈솔적고빈맥동분량；최후차조우쇄상배원리관측출전자위치각。이용자련적전류모형화관측위치각，계산출정자자련급전자전구，병구건무위치전감기직접전구공제계통。실험결과표명소제무위치전감기구동계통임하부재시균가이은정운행우령전속급겁저전속。
A novel rotor position angle estimator is proposed to achieve zero and very low operating speed for a sensorless direct torque controlled electrically excited synchronous motor (ESM) drive. Firstly, high-frequency ripple currents are injected into the rotor circuit, and secondly, using the torque close-loop, the high-frequency component is injected into torque to produce high-frequency stator currents only in the d-axis direction. At last, the rotor position angle is estimated with the phase-locked loop principle. The stator flux and torque are calculated with the stator flux current model and the estimated rotor position angle, and then the sensorless direct torque controlled ESM drive is constructed with estimated flux and torque. The results of experiments show that the proposed sensorless drive system can operate at the zero and very low speed under any load.
