A Mathematical Torque Ripple Minimization Technique Based on a Nonlinear Modulating Factor for Switched Reluctance Motor Drives
A Mathematical Torque Ripple Minimization Technique Based on a Nonlinear Modulating Factor for Switched Reluctance Motor Drives
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开关磁阻电机驱动器基于非线性调制因子的数学扭矩纹波最小化技术
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
A. V. R. Teja
中科院分区：
文献类型：
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作者：
A. Rana;A. V. R. Teja
提出了一种减小8/6四相开关磁阻电动机转矩涟漪的方法。该方案引入了一个依赖于转子位置和相电流大小的非线性调制因子。该因子在换相期间操纵相邻两相中的电流，并有效地减小转矩涟漪。与传统的转矩分配函数不同，所提出的方法瞬时调制基于其他相电流数学获得的每个相电流，以保持净转矩恒定。所提出的方法需要最少的离线分析，并提供最大可能的转矩与最小的涟漪。该方法计算量小，易于实现.所提出的算法是使用MATLAB/Simulink软件实现的，并在实验室开发的现场可编程门阵列为基础的硬件设置上的0.6马力8/6 SRM上进行实验验证。典型的结果，并与现有的技术进行比较。已实现约8\%$的扭矩涟漪。
This article presents a method to reduce the torque ripple in an 8/6 four-phase switched reluctance motor (SRM). The proposed scheme introduces a nonlinear modulating factor dependent on the rotor position and magnitude of the phase currents. This factor manipulates the currents in two adjacent phases during commutation and reduces the torque ripple effectively. Unlike the conventionally available torque-sharing functions, the proposed method instantaneously modulates every phase current obtained mathematically based on the other phase current in order to maintain the net torque constant. The proposed method requires minimal offline analysis and offers maximum possible torque with a minimal ripple. The method is simple and easy to implement due to a low computational burden. The proposed algorithm is implemented using MATLAB/Simulink software and is also validated experimentally on a 0.6-hp 8/6 SRM using a field-programmable-gate-arrays-based hardware setup developed in the laboratory. Typical results are presented and compared with the existing techniques. A torque ripple of $approx 8\%$ has been achieved.