摘要
永磁电机已成为现代传动中机电能量转换的核心部件,其性能是决定传动系统品质的关键。为了提高永磁电机容错性与可靠度及实现永磁电机模块化组装,该文设计一种新型N~*3相永磁同步电机。建立新型N~*3相永磁同步电机的有限元仿真模型,并通过有限元计算得到了N~*3相永磁同步电机的输出特性;针对新型N~*3相永磁同步电机特殊的绕组结构及特性,提出一种基于负载转矩观测与Smith预测相结合的预测控制算法。所提算法消除了数字控制系统中不可逆的一拍延时影响及抑制了高带宽的预测速度控制带来的振荡问题,同时满足了N~*3相永磁同步电机的高性能调速要求。最后,通过仿真与半实物实验验证新型N~*3相永磁同步电机的有效性和所提算法的可行性。
Permanent magnet synchronous motor(PMSM)has become the core component of electromechanical energy conversion in modern transmission, and its performance is the key to determine the quality of transmission system. In order to improve the fault tolerance and reliability of PMSM and realize modular assembly of PMSM, a novel N~*3 phase PMSM was designed in this paper. First, the finite element simulation model of the new N~*3 phase PMSM was established, and the output characteristics of the N~*3 phase PMSM ware obtained through finite element calculation. In view of the special structure and characteristics of the new N~*3 phase PMSM, a predictive control algorithm based on load torque observation and Smith prediction was then proposed. The proposed predictive control algorithm eliminates the irreversible impact of one beat delay in the digital control system and inhibits the oscillation caused by the high bandwidth predictive speed control, and meets the high performance speed requirements of the N~*3 phase PMSM. Finally, the effectiveness of the designed N~*3 phase PMSM and the feasibility of the proposed predictive control algorithm were verified by simulation and semi physical experiments
引文
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