同步磁阻电机分析与设计(连载之六) 转子均匀分布磁障的参数优化

Analysis and Design of Synchronous Reluctance Machines Part Ⅵ: Parameter Optimization of Evenly Distributed Rotor Barriers

本文对磁障均匀分布的同步磁阻电机的转子参数提出了统一的表达形式，提出约束转子尺寸的3个主要参数，即磁障层数、每对极下虚拟磁障边端个数和隔磁层占有率。以有限元法分析转子主要参数对平均转矩和转矩脉动的影响，表明通过磁障层数和每对极下虚拟磁障边端个数的优化配合可以获得较大的平均转矩，通过每对极下虚拟磁障边端个数和电机极槽比的合理配合可以获得较小的转矩脉动，当隔磁层占有率设计为0．5—0．55时能获得较大平均转矩和较小转矩脉动，从而实现了以少量参数的优化获得较优的电机性能。

This paper unified the parameter expressions of the synchronous reluctance maclame （Synttivi） with evenly distributed flux barriers, and proposed the main rotor parameters, namely the number of flux barrier layers, the number of pseudo barrier ends under each pole-pair, and the insulation ratio of flux barriers. Finite element method （FEM） was utilized to analyze the impact of rotor main parameters on the SynRM average torque and torque ripple, verifying that the average torque can be improved by a proper combination of the number of flux barrier layers and the number of pseudo barrier ends under each pole-pair. The torque ripple can be suppressed by a proper combination of the number of pseudo barrier ends under each pole-pair and the pole-slot numbers. The insulation ratio should be designed between 0.5 and 0.55 to gain high average torque and low torque ripple. Therefore, the number of parameters to be optimized was reduced so as to achieve easy processing for the design of a high-performance SynRM.