基于电流自适应的九相永磁同步电机开路容错控制  

Open-circuit Fault-tolerant Control of Nine-phase PMSM Based on Current Adaptation

作　　者：林潇锐 和阳 赵文祥[1] 吉敬华[1] 陶涛 王化南 LIN Xiaorui;HE Yang;ZHAO Wenxiang;JI Jinghua;TAO Tao;WANG Huanan(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013)

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《电气工程学报》2025年第1期26-36,共11页Journal of Electrical Engineering

基　　金：国家自然科学基金(52025073);镇江市重点研发计划(GY2020011)资助项目。

摘　　要：九相永磁同步电机(Permanent magnet synchronous motor,PMSM)具有容错能力强、控制自由度多等优点,在高可靠性场合得到了广泛应用。为了解决电机绕组发生开路时,传统容错策略需要故障定位及算法切换等问题,针对九相电机三中性点的任意相绕组开路故障,提出一种无需故障定位和算法切换的电流自适应容错控制策略。该方法通过分离出谐波平面电流的故障参考角,得到各个谐波平面的电流参考通式。当发生开路故障后,通过谐波平面电流参考通式直接作用于控制系统,实现主动容错。由于闭环情况下故障参考角存在偏差,通过引入改进型重复-准比例谐振控制器对故障前后的谐波电流进行精准跟踪,进一步抑制了开路故障下的转矩脉动和电流谐波,保证了故障前后的稳态性能。试验结果验证了所提策略的可行性和有效性。The nine-phase permanent magnet synchronous motor(PMSM)has the advantages of strong fault tolerance and multiple control degrees of freedom,and has been widely used in high reliability situations.In order to solve the problem of traditional fault-tolerant strategies requiring fault location and algorithm switching when an open circuit fault occurs in the motor winding,a current adaptive fault-tolerant strategy that does not require fault location and algorithm switching for any phase winding open circuit fault at the three neutral points of a nine-phase PMSM is proposed.The current reference general formulas for each harmonic plane is obtained by separating the fault reference angle of the harmonic plane current.When an open circuit fault occurs,the harmonic plane current reference formula directly acts on the control system to achieve active fault tolerance.Due to the deviation of the fault reference angle under closed-loop conditions,an improved repetitive quasi proportional resonance controller is introduced to accurately track the harmonic current before and after the fault,further suppressing torque ripple and current harmonics under open circuit faults,and ensuring steady-state performance before and after the fault.The experimental results validate the feasibility and effectiveness of the proposed strategy.

关 键 词：九相永磁同步电机 电流自适应 开路故障 容错控制 

分 类 号：TM351[电气工程—电机]