摘要
无轴承开关磁阻电机(BSRM)具有双凸极结构,转矩脉动大是制约其运行性能和应用范围的主要因素之一,而采用直接瞬时转矩控制和直接悬浮力控制(DITC&DFC)方法可以有效抑制其转矩脉动。基于这种控制方法,该文针对12/8极单绕组BSRM的绕组开路故障,提出一种容错控制策略,实现了电机单齿极绕组开路故障容错运行时的稳定悬浮。首先阐述了单绕组BSRM的悬浮原理及DITC&DFC的工作原理,然后对绕组开路故障下的悬浮力缺失进行补偿,重新构造容错运行时的电压符号选择表。最后通过Matlab/Simulink模型仿真及原理样机实验,验证了该控制策略在单绕组BSRM绕组故障容错运行时具有良好的控制性能。
On account of the double-salient-pole structure of bearingless switched reluctance motor （BSRM）, the torque ripple is one of the most important factors that restrict its operation performance and application, which can be effectively suppressed when using the direct instantaneous torque control and direct force control （DITC＆DFC） method. Based on this method, the open-circuit fault of a 12/8 single-winding BSRM was studied and a fault-tolerant control method was proposed to compensate the absent levitation force. As a result, the stable levitation under the open-circuit fault-tolerant operation was achieved. Firstly, the principle of levitation and DITC＆DFC were demonstrated. To compensate the loss of levitation force under open-circuit fault, the voltage symbol selection table was reconstructed. Finally, the simulations of Matlab/Simulink and experiments of prototype motor were completed. It is verified that this control strategy can achieve a good control performance for fault-tolerant operation of single-winding BSRM.
作者
张蕾
曹鑫
邓智泉
周京星
Zhang Lei;Cao Xin;Deng Zhiquan;Zhou Jingxing(Center for More-Electric-Aircraft Power System Nanjing University of Aeronautics and Astronautics Nanjing 211106 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第15期3564-3571,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金面上项目资助(51477074
51577087)
关键词
无轴承开关磁阻电机
直接瞬时转矩控制
直接悬浮力控制
容错运行
悬浮力补偿
Bearingless switched reluctance motor
direct instantaneous torque control
direct force control
fault-tolerant operation
radial force compensation
