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一种基于快速傅里叶建模方法的开关磁阻电机模型预测控制

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  • 国家科技期刊平台
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为快速准确地建立开关磁阻电机模型，提高模型预测控制性能，该文提出一种基于快速傅里叶建模方法的模型预测控制策略。一方面采用傅里叶级数对磁链和转矩特性进行解析建模，并推导转矩预测模型;另一方面结合分扇区的思想控制电机换相进而简化代价函数，并在每个扇区内只设计两个预选电压矢量，有效减小了预测控制的计算负担。另外，扇区的位置和宽度可根据转速和负载的变化而变化，增强了算法的适用性。仿真和实验与传统的模型预测控制方法进行对比，并考虑到低、高速以及转速和负载突变的不同工况，结果表明所提算法的转矩脉动更低，转矩电流比更高。
Model Predictive Control of Switched Reluctance Motor Based on Fast Fourier Modeling Method
In order to quickly and accurately establish the nonlinear model of switched reluctance motor(SRM)and improve the performance of model predictive control(MPC),we propose a model predictive control strategy based on fast Fourier modeling method.On the one hand,Fourier series is used to model the flux and torque characteristics,and the torque prediction model is derived.On the other hand,by integrating the concept of sector division,we streamline motor commutation control and simplify the cost function.By designating just two preselected voltage vectors within each sector,we effectively alleviate the computational load associated with predictive control.In addition,the position and width of the sector can vary according to changes in speed and load,enhancing the applicability of the algorithm.Simulations and experiments are compared with traditional MPC methods,taking into account different operating conditions at low and high speeds as well as sudden changes in speed and load,and the results have shown that the proposed algorithm has a lower torque ripple and a higher torque ampere ratio.

switched reluctance motor(SRM)predictive torque controlnonlinear modelingtorque ripplecalculation of sector position and width

任萍、朱景伟、赵燕、荆哲、许爱德

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大连海事大学船舶电气工程学院,辽宁省 大连市 116026

大连海事大学信息科学技术学院,辽宁省 大连市 116026

开关磁阻电机(SRM) 预测转矩控制 非线性建模 转矩脉动 扇区位置和宽度计算

国防科技大学装备综合保障技术重点实验室稳定支持项目大连海事大学优秀博士学位论文培育项目

WDZC202352503092022YBPY005

2024

10.13334/j.0258-8013.pcsee.230750

中国电机工程学报
中国电机工程学会

中国电机工程学报

CSTPCD北大核心
影响因子：2.712
ISSN：0258-8013
年,卷(期)：2024.44(14)