基于三相四桥臂变换器的开关磁阻电机系统开路故障容错控制研究  

Open-circuit Fault-tolerant Control of Switched Reluctance Motor System Based on Three-phase Four Leg Converter

作　　者：丁石川[1] 罗金 杭俊[1] 李伟[1] 朱庆龙 DING Shichuan;LUO Jin;HANG Jun;LI Wei;ZHU Qinglong(National Engineering Laboratory of Energy-saving Motor&Control Technology(School of Electrical Engineering and Automation,Anhui University),Hefei 230601,Anhui Province,China;Anhui Province Key Laboratory of Large-scale Submersible Electric Pump and Accoutrements,Hefei 231131,Anhui Province,China)

机构地区：[1]高节能电机及控制技术国家地方联合实验室(安徽大学电气工程与自动化学院),安徽省合肥市230601 [2]大型潜水电泵及装备技术安徽省重点实验室,安徽省合肥市231131

出　　处：《中国电机工程学报》2023年第17期6874-6884,共11页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52377034,52177027,52107034);安徽省自然科学基金优秀青年项目(2108085Y18);安徽省科技重大专项项目(202203c08020010)。

摘　　要：功率变换器故障是影响开关磁阻电机系统运行的主要问题之一,电机系统长期运行故障状态下可能会对整个系统造成不可逆的损伤。为此,该文提出一种适用于三相开关磁阻电机的容错控制策略,保证电机系统在开关管开路故障下可以容错运行。在健康状态下,开关磁阻电机系统为两相励磁运行模式,保证绕组利用率。在开关管开路故障时,使用第四桥臂在故障相上产生反向电流,开关磁阻电机系统调整为单相励磁模式,解决开关管开路故障时输出转矩缺相的问题。所提方法在使用较少冗余开关的基础上,提高了开关磁阻电机系统在开路障条件下的容错能力。仿真和实验结果验证了所提容错控制方法的有效性。The power converter fault in a switched reluctance motor(SRM)system is one of the main problems affecting the operation of the system.Long-term operation of the SRM system in a fault state will possibly cause irreversible damage to the entire system.Hence,this paper proposes a fault-tolerant control strategy suitable for three-phase SRM to ensure that the motor system can stably operate under the condition of open-circuit fault in a switch tube.In a healthy state,the switched reluctance motor system operates with two-phase excitation to ensure winding utilization.When the switch tube has an open-circuit fault,the fourth bridge arm is used to generate a reverse current on the faulty phase to adjust to the single-phase excitation mode,which solves the problem of output torque phase loss under the open-circuit fault condition.The proposed method improves the fault tolerance of the SRM system under open-circuit fault condition on the basis of using less redundant switches.Simulation and experimental results verify the effectiveness of the proposed fault-tolerant control method.

关 键 词：开关磁阻电机 容错控制 功率变换器 三相四桥臂变换器 

分 类 号：TM464[电气工程—电器]