Abstract
This paper deals with the optimal excitation angles of switched reluctance generator (SRG) in order to minimize the losses or to maximize the efficiency. The proposed SRG operates at relatively high speed in the single-pulse mode operation. In this regime, the turn-on and turn-off angles are the only control parameters that may be used to optimize the performance of the SRG. Previous work on the optimal excitation angles was for maximizing efficiency based on mapping the phase current (rms) of the SRG. In the present paper, maximization of the efficiency is carried out by minimizing the losses. The SRG is simulated using the magnetization characteristics obtained by static tests of the machine and the losses in different parts are evaluated. The SRG is simulated over all feasible turn-on and conduction angles for speeds equal to 2000 rpm. The average output power, rms phase current and losses with each pair of angles are calculated in order to generate the required output power. Finally the results obtained using the two above-mentioned methods are compared.
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