【作者】 周马山；

【导师】 欧阳红林；

【作者基本信息】 湖南大学 ， 控制理论与控制工程， 2004， 硕士

【摘要】 矢量控制使交流调速系统的性能产生了质的飞跃，多相永磁同步电机矢量控制系统更是提高了系统性能，增强了系统可靠性。本文以双Y移30°六相永磁同步电机为例，在简要介绍三相永磁同步电机矢量控制的基础上，通过坐标变换建立了多相永磁同步电机矢量控制的数学模型。同时，利用多相电机的相冗余特点，对定子侧绕组开路或逆变器桥臂故障时不对称多相永磁同步电机的补偿控制进行了重点阐述，提出了两种补偿控制方法，即基于故障前后定子绕组产生的合成磁动势不变的补偿方法，和采用改进旋转坐标变换实现的新型矢量控制方法。多相永磁同步电机矢量控制系统的数字仿真结果表明，正常时多相永磁同步电机的性能远远优于普通三相永磁同步电机，更为重要的是，故障后形成的不对称多相永磁同步电机采用补偿控制策略时，其性能可与正常时的性能相媲美，从系统级上提高了交流调速系统的可靠性。 针对PI控制器的不足，本文在介绍模糊控制原理的基础上，还为多相永磁同步电机矢量控制系统设计了基于PI+EFLC(增强型模糊逻辑控制器)的双模控制器，并取得了满意的仿真结果。 最后，本文以DSP和CPLD为核心，构造了多相永磁同步电机矢量控制系统的硬件系统，并对其软件设计做了相应介绍。更多还原

【Abstract】 The performance of AC variable speed drive system has been improved greatly since field-oriented control is applie’d, and the reliability of drive system composed of multiphase Permanent Magnet Synchronous Motor (PMSM) is enhanced. After the field-oriented control of three-phase PMSM drive system is introduced in brief, a mathematical model of multiphase PMSM, taking a six-phase PMSM with a dual-star winding for example, is derived by coordinates transformation. Additionally, taking phase redundancy into account, the compensation control of multiphase PMSM is illustrated emphatically when one (or more than one) leg of the motor or the corresponding inverter is lost, and two compensation schemes are presented. One is based on producing the same magnetic motive force under fault condition as that under normal condition, and the other is novel field-oriented control based on the improved rotary frame transformation adopted. The simulation results of both the multiphase PMSM and three-phase PMSM show that the former performance is much better than the later one, and that the multiphase PMSM under fault condition operates as well as under normal condition when compensation control is applied. So the conclusion is drawn that the performance of multiphase PMSM variable speed driver system gains an advantage over the counterpart of three-phase PMSM and the former reliability is much better than the later one.Moreover, after the principle of fuzzy control is illustrated, a dual-model control scheme based on PI (Proportional Integral)+EFLC (Enhanced Fuzzy Logic Controller) is also brought forward, so that the disadvantage of the PI controller will be avoided. The simulation results show that the scheme is desirable.A hardware based DSP (Digital Signal Processor) and CPLD (Complex Programmable Logic Device) for multiphase PMSM variable speed drive system is established, and the corresponding software design is also presented in the paper.更多还原