电工技术学报  2019, Vol. 34 Issue (22): 4678-4686    DOI: 10.19595/j.cnki.1000-6753.tces.181290
电机与电器 |
严重不平衡负载下盘式对转永磁同步电机的双转子直接转矩控制研究
罗德荣, 苏欣, 贺锐智, 黄守道
湖南大学国家电能变换与控制工程技术研究中心 长沙 410082
Dual-Rotor Direct Torque Control Strategy of Disk-Type Contra-Rotating Permanent Magnet Synchronous Motor under Heave Unbalanced Load Torque
Luo Derong, Su Xin, He Ruizhi, Huang Shoudao
National Engineering Research Center of Energy Conversion and Control Hunan UniversityChangsha 410082 China
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摘要 采用滑模速度控制器的动态主从控制法对盘式对转永磁同步电机进行控制时,其控制性能存在两个问题:①负载突变量较大时转子鲁棒性较差;②严重不平衡负载下从转子存在较大的转速脉动。针对以上问题,该文提出了双转子直接转矩控制与负载转矩补偿相结合的控制策略。该策略对两转子进行直接转矩控制,同时采用负载转矩观测器对两转子的负载转矩进行观测并前馈补偿于控制系统中。实验结果表明,与采用滑模速度控制器的动态主从控制法相比,该文提出的方法提高了转子负载突变量较大时系统的鲁棒性,且在严重不平衡负载状态下,该电机的两转子能在基本无脉动的条件下同步跟随给定转速。
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罗德荣
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贺锐智
黄守道
关键词 对转永磁同步电机不平衡负载直接转矩控制负载转矩观测器    
Abstract:For a disk-type contra-rotating permanent magnet synchronous motor (CR-PMSM), when the dynamic master-slave control method with sliding mode speed controller is employed,there are two problems: the rotor has poor robustness when sudden load variation is large, and the speed pulsation of slave rotor are large when the load torque is severely unbalanced. Therefore, a novel dual-rotor direct torque control strategy with load torque compensation is proposed in the paper. The strategy realizes the direct torque control of dual rotor. Meanwhile, two sliding mode observers are applied to observe load torque of dual rotor, then the values of observers are made feedforward compensation to the system. The experimental results of the prototype show that the proposed method improves the above problems compared with the dynamic master-slave control with sliding mode speed controller. Specifically, the robustness of the rotor is improved when sudden load changes are large, and in the heave unbalanced load torque case, dual rotor of CR-PMSM can synchronously track for a given speed under the conditions of basically no pulsation.
Key wordsContra-rotating permanent magnet synchronous motor    unbalanced load    direct torque control    load torque observer   
收稿日期: 2019-07-25      出版日期: 2019-11-28
PACS: TM315  
基金资助:国家自然科学基金项目资助(51577052)
通讯作者: 罗德荣 男,1968年生,副教授,博士生导师,研究方向为电力电子及特种电机控制。   
作者简介: 苏 欣 女,1994年生,硕士研究生,研究方向为电力电子及电机控制。
引用本文:   
罗德荣, 苏欣, 贺锐智, 黄守道. 严重不平衡负载下盘式对转永磁同步电机的双转子直接转矩控制研究[J]. 电工技术学报, 2019, 34(22): 4678-4686. Luo Derong, Su Xin, He Ruizhi, Huang Shoudao. Dual-Rotor Direct Torque Control Strategy of Disk-Type Contra-Rotating Permanent Magnet Synchronous Motor under Heave Unbalanced Load Torque. Transactions of China Electrotechnical Society, 2019, 34(22): 4678-4686.
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