双转子盘式对转永磁电机同步控制策略

摘要

对一种具有双转子的盘式对转永磁同步电机进行了讨论、分析与实验验证.双转子电机因具有高效与结构简单等特点成为研究的热点,然而,在实际应用中,当两侧转子负载转矩不平衡时,在一套逆变器装置供电的前提下难以保证双转子电机系统的稳定运行.为确保不同负载转矩下的双转子电机系统能够稳定运行,该文提出了动态主从控制策略来解决两个转子如何保持同步旋转的问题;并对双转子电机起动及负载转矩不平衡时的绕组电流进行了分析讨论;最后在以DSP TMS320F28335为主控器件的实验平台上对样机进行了实验验证,实验结果表明该文所提控制策略能有效地保证双转子同步旋转.%This paper focuses on the discussion, analysis and experimental verification for a novel contra-rotating permanent magnet synchronous motor (CRPMSM) system. In recent years, the CRPMSM motor has become a hotspot in academic research due to its efficiency and simple architecture. However, the stability of the CRPMSM motor supplied by a set of inverter is difficult to be ensured in practical applications when the CRPMSM motor runs under the condition of load variation. In order to ensure the stability of CRPMSM motor system under different load conditions, a master-slave control strategy is proposed to solve the problem of synchronizing the speed of two rotors. Moreover, the method for starting the CRPMSM motor reliably is proposed, and the current of armature winding under unbalanced loads condition is discussed. The proposed control strategy is implemented on the experimental platform which is used a DSP TMS320F28335 as the main controller. The test results of the novel CRPMSM motor show the effectiveness and good performance of the proposed control strategy for speed synchronism.