采用模糊逻辑修正的SRM滑模控制器设计

Sliding Mode Controller of SRM Combined with Fuzzy Logic Correction[JZ)][HS)]

摘要:

针对开关磁阻电动机输出转矩脉动问题,提出了一种基于模糊逻辑修正的滑模转矩脉动最小化控制方法;采用数学解析方法对有限元分析的电感数据进行处理,从而建立电机的非线性模型,并详细分析了转矩脉动机理；设计了基于滑模变结构的电机瞬时转矩控制器,并采用模糊逻辑修正模块对关断角进行实时补偿控制;仿真结果表明,与PI定角度控制及滑模控制相比,转矩脉动系数分别减小了24.7%和15.1%,提升了高转速时的电机动态性能。

Abstract:

For the problem of the torque ripples of the switched reluctance motor, the method of sliding mode controller for torque ripple suppression of SRM by fuzzy logic correction was mentioned. According to the analysis of inductance data, the nonlinear model of SRM was established. On this basis, three situations of torque ripples were analyzed in detail. A sliding mode controller for direct torque control of SRM was designed. In addition, the method of fuzzy logic to compensate the turn-off angle was designed. At last, the proposed methods were proved by simulations. Compared with the PI—Fixed angle control and sliding mode control, the proposed methods achieved better effect on torque ripple suppression, especially in high speed.