Experimental robust H∞ controller design of switched reluctance motor for electrical vehicle application

To ensure high perfermance and robustness against external disturbances and modeling uncertainties under hard operating conditions for Switched Reluctance Motor in EV application, a reliable robust control must be designed. In this paper we present a robust control design based on fixed order H_∞ loop shaping approach. Standard H_∞ control is a powerful robust control technique for systems with uncertainties and disturbances. However, the designed controllers by this technique are complex, with a high order and, thus, not suitable for implementation in EV. The purpose of this paper is to overcome this drawback by applying the fixed structure H_∞ loop shaping control for SRM drive. To show the performance of this control approach, a robustness analysis is performed by comparing fixed structure and conventional H_∞ loop shaping controllers using the concept of the Singular Structured Value, i.e. the μ-analysis. The effectiveness of the proposed approach is highlighted by simulation and experimental results.