Electromagnetic Modeling Techniques for Switched Reluctance Machines: State-of-the-Art Review

Abstract

Switched Reluctance Machines (SRMs) are gaining more attention due to their simple and rugged construction, low manufacturing cost, and high-speed operation capability. An electromagnetic model of the machine is needed in the design and analysis processes. The required accuracy level of the model depends mainly on the application. A high-fidelity model is required to achieve a good design and predict the performance accurately. However, it requires high computational cost and longer simulation time. Other fast and less-comprehensive models with less computational burden could be utilized in the design and analysis of the motor drives. This paper extensively analyzes various electromagnetic modeling techniques of SRMs. Analytical, numerical, and hybrid models are considered. The paper investigates analytical models that are based on Maxwell's equations in addition to interpolation and curve fitting techniques. Numerical techniques such as Finite Element Method (FEM) and Boundary Element Method (BEM) are presented. Moreover, Magnetic Equivalent Circuit (MEC) method is discussed. Finally, potential research areas are proposed for the electromagnetic modeling of SRMs. INDEX TERMS Analytical model, boundary element method (BEM), electromagnetic modeling, finite element method (FEM), magnetic equivalent circuit (MEC) model, numerical model, switched reluctance machine (SRM).

Vision, Challenges, and Future Trends of Model Predictive Control in Switched Reluctance Motor Drives

“…SRMs electromagnetic modelling is a well-studied field, and options for an accurate estimation are available. A comprehensive review of electromagnetic models is presented in [20]. In terms of discretization, the most common approach is the forward Euler approximation due to its simplicity and good performance.…”

Radial Force Density Calculation of Switched Reluctance Machines Using Reluctance Mesh-Based Magnetic Equivalent Circuit

“…Torque production in an SRM is entirely from the saliency in the motor geometry, and PMs are not needed. The main advantages of SRM over PMSM are lower cost, simple construction, capability to operate at higher temperature and a wider speed range [3]. The main challenges in SRM are higher torque ripple and higher acoustic noise and vibration [1], [3].…”

“…The main advantages of SRM over PMSM are lower cost, simple construction, capability to operate at higher temperature and a wider speed range [3]. The main challenges in SRM are higher torque ripple and higher acoustic noise and vibration [1], [3]. Torque ripple can be reduced by choosing a proper pole configuration [4] and by changing the shape of the excitation current using a torque sharing function (TSF) [5].…”

“…The reluctance mesh-based MEC technique is an alternative to the conventional MEC technique. The main advantage of the reluctance mesh-based MEC method is that the flux paths do not need to be identified in advance [3], [22], [23]. A mesh is utilized in the reluctance mesh-based MEC method to obtain the field solution.…”

Melhoria De Desempenho De Motores De Relutância Variável Via Algoritmo De Enxame De Partículas

“…Isso faz com que a máquina não dependa de ímãs ou correntes induzidas para excitação rotórica, configurando uma grande vantagem quando comparada a máquinas de indução e de ímãs permanentes, por exemplo. Somando-se a isso, o SRM apresenta baixos custos de fabricação e um processo de produção simplificado [1]- [5].…”