| 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. |
