点击次数：

所属单位：自动化学院

发表刊物：IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

关键字：Commutation correction commutation error high-speed brushless dc (BLDC) motor phase-lock loop (PLL) sensorless control

摘要：Commutation error degrades the operating performance of a high-speed permanent magnet brushless dc motor (BLDC) sensorless drive significantly. It is caused by different kinds of nonideal factors such as low-pass filters (LPFs), digital control delay, and other units in a control loop. This paper analyzes the commutation error caused by different kinds of nonideal factors and points out that the total commutation error is substantially equivalent to the error of an internal power factor (IPF) angle of the BLDC motor. The purpose of the commutation correction in this paper is to regulate the IPF angle to zero. A novel phase-lock loop (PLL)-based commutation correction strategy is proposed and designed in detail in this paper. The proposed PLL consists of a novel PM flux linkage based phase discriminator to detect the IPF angle, an LPF, and an autophase regulator (APR). The function of the proposed PLL is to lock the IPF angle to a reference value. Compared to the conventional scheme, the greatest advantage of the proposed scheme is that the proposed PLL is robust to any kind of phase delay caused by nonideal factors in the control loop, and it is quite important for a high-speed motor drive. Both simulation and experimental results verify the effectiveness and superiority of the proposed correction strategy.

ISSN号：0278-0046

是否译文：否

发表时间：2018-05-01

合写作者：Gu, Cong,Shi, Xiaoqing,邓智泉

通讯作者：王晓琳