永磁容错轮缘推进电机预测占空比电流滞环控制  

Predictive Duty Cycle Current Hysteresis Control for Fault-Tolerant Permanent Magnet Rim Drive Motor

作　　者：王志彬 朱景伟 赵锡阳 刘咏涵 曹海川 Wang Zhibin;Zhu Jingwei;Zhao Xiyang;Liu Yonghan;Cao Haichuan(School of Marine Electrical Engineering Dalian Maritime University,Dalian 116026 China)

机构地区：[1]大连海事大学船舶电气工程学院,大连116026

出　　处：《电工技术学报》2023年第3期670-679,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51777024)和辽宁省自然科学基金(2020-MS-129)资助项目。

摘　　要：针对永磁容错轮缘推进电机传统电流滞环控制策略转矩脉动大的问题,提出一种预测占空比电流滞环控制策略。在固定采样频率下,通过当前时刻转子位置、角速度及母线电压预测电流滞环宽度,进而根据电流相对滞环位置预测占空比来实现闭环控制,同时结合故障容错控制策略可实现电机一相开路和短路故障容错控制。利用Matlab/Simulink搭建仿真模型,设计并调试以StarSim为核心的硬件实验平台,仿真和实验结果证明所提出的预测占空比电流滞环控制策略可有效提高电流控制精度,降低电机转矩脉动,同时保留了传统电流滞环控制算法简单和响应速度快的特点。The application of fault-tolerant permanent magnet rim drive motor(FTPM-RDM) in the rimdriven thruster(RDT) can improve the space utilization and efficiency of the ship, and significantly improve the reliability of the propulsion system. In recent years, scholars have proposed direct torque control, model predictive current control and other control algorithms for FTPM-RDM, but there are problems such as complex algorithm and slow response speed. With the traditional current hysteresis band pulse width modulation(CHBPWM) control strategy, each phase winding of FTPM-RDM can be controlled separately, which has the advantages of simple algorithm and fast fault tolerant control of open-circuit and short-circuit fault. However, due to the limitation of the operation speed of the digital controller and the switching frequency allowed by the power devices, the traditional CHBPWM control strategy has the disadvantages of large current ripple and high distortion rate,resulting in large torque ripple. To solve this problem, this paper proposes a predictive duty cycle CHBPWM control strategy, which can effectively improve current control accuracy and reduce motor torque ripple while retaining the simplicity and fast response of traditional CHBPWM algorithm.The FTPM-RDM predictive duty cycle CHBPWM control system is a dual closed-loop vector control method using an outer loop for speed and an inner loop for current. First, the error between the given speed and the actual speed is obtained through PI regulator and coordinate transformation to obtain the given value of each phase current in the static coordinate system. Then, the predicted current hysteresis width of each phase winding in the next cycle is obtained through the rotor position, electrical angular velocity and DC bus voltage of the motor at the current moment. Then, the predicted duty cycle of each phase is obtained according to the actual current relative hysteresis position to achieve the closed-loop control of the motor. At the same time, combined with fault-t

关 键 词：永磁容错轮缘推进电机 H桥逆变电路 预测占空比 StarSim 

分 类 号：TM351[电气工程—电机]