Adaptive Feedforward Control Applied in SRM Drive Speed Control in Fault Situations

[+] Author and Article Information
Wellington A. Silva

Campus do Pici Electrical Engineering Fortaleza, 60455-760 Brazil

Bismark C. Torrico

Campus do Pici Electrical Engineering Fortaleza, 60455-760 Brazil

Wilkley B. Correia

Campus do Pici Fortaleza, CearĂ¡ 60440-970 Brazil

Laurinda L. N. dos Reis

Cx. Postal 6001 Campus do Pici Dep. Eng. Eletrica Fortaleza, Ceara 60455-760 Brazil

1Corresponding author.

ASME doi:10.1115/1.4037836 History: Received November 04, 2016; Revised August 18, 2017


Many industrial and laboratory applications which make use of electric machines require non-interruption operation, even in the presence of faults, such as power generation and electric vehicles. Under fault scenarios the performance of the system is expected to degrade and control techniques may be helpful to overcome this issue. Within this context, phase faults are obviously undesired, as may lead the machine to stop operating. Switched Reluctance Machines (SRM), due its inherit characteristics, are naturally tolerant to phase faults, despite of the loss of performance. Most of the techniques used to improve the performance of SRMs in fault situations are related to the switching feed converter. Regarding this issue, instead of presenting an alternative converter topology, this work alternatively proposes a control approach which significantly reduces the phase faults effects on the speed of the motor. Furthermore, the high frequency noise is attenuated when compared to the classical PI controller, commonly applied to control such sort of motors. The proposed SRM-AFC controller is able to recover the speed of operation faster than a classical approach, when a feedforward action is not taken into account.

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