Hybrid analytical model of switched reluctance machine for real-time hardware-in-the-loop simulation

• Published in: IET electric power applications Vol. 11; no. 6; pp. 1114 - 1123
• Main Authors: Xu, Fengqiu, Dinavahi, Venkata, Xu, Xianze
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.07.2017
• Subjects: Ansys Maxwell simulation; Ansys Simplorer simulation; backward Euler method; control system; digital hardware implementation; drive circuit; electric machine analysis computing; electromagnetic torque computation; equivalent circuits; exciting current calculation; field programmable gate arrays; field‐programmable gate array; Gaussian processes; Gaussian quadrature; HAM; hardware‐in‐the loop simulation; harmonic analysis; HIL simulation; hybrid analytical model; integration; machine theory; magnetic circuits; magnetic equivalent circuit method; magnetic flux; MEC method; Newton‐Raphson method; offline transient solution; parallel architectures; parallel hardware architecture; phase flux linkage; pipeline arithmetic; pipelined arithmetic processing; Regular Papers; reluctance machines; rotor pole; rotors; SHM; Simulink simulation; space harmonic method; SRM; stator pole; stators; switched reluctance machine; hardware-in-the loop simulation; magnetic flux; Newton-Raphson method; field programmable gate arrays; parallel architectures; magnetic equivalent circuit method; switched reluctance machine; hybrid analytical model; pipeline arithmetic; electromagnetic torque computation; space harmonic method; equivalent circuits; field-programmable gate array; stator pole; HIL simulation; SRM; drive circuit; magnetic circuits; backward Euler method; Ansys Maxwell simulation; SHM; control system; Gaussian quadrature; hardware-in-the-loop simulation; electric machine analysis computing; rotors; rotor pole; Ansys Simplorer simulation; pipelined arithmetic processing; offline transient solution; parallel hardware architecture; harmonic analysis; machine theory; stators; Simulink simulation; MEC method; phase flux linkage; reluctance machines; HAM; exciting current calculation; Gaussian processes; integration; digital hardware implementation
• ISSN: 1751-8660; 1751-8679; 1751-8679
• DOI: 10.1049/iet-epa.2016.0831

Applications of switched reluctance machine (SRM) are increasing in the industry due to their many desirable features. This study proposes a hybrid analytical model (HAM) of the SRM for the hardware-in-the-loop (HIL) simulation. To obtain satisfactory accuracy, the phase flux linkage is solved by the magnetic equivalent circuit (MEC) method when the stator and rotor poles overlap, and by the space harmonic method (SHM) when the poles do not overlap. The backward Euler and Newton–Raphson methods are used to calculate the exciting current, while the Gaussian quadrature is used to compute the electromagnetic torque in the HIL simulation. The digital hardware implementation of computation components are developed on the field-programmable gate array by exploiting the parallel hardware architecture and fully pipelined arithmetic processing. To highlight the performance of the HAM, the captured real-time results are compared with the off-line transient solution obtained through the co-simulation of Ansys Maxwell®, Ansys Simplorer®, and Simulink®, which model the SRM, drive circuit, and control system, respectively.