Abstract
In this paper, a selection of a few current references for acoustic noise reduction in the 36–24 and the 18–12 switched reluctance motors is presented. It is seen that the difference in radial force profile results in few optimal current references. It is found that the optimal current reference with extreme radial force sum flattening results in increased rms current and loss in a magnetically saturated region of the 18–12 SRM. Thus, proper selection of the current references is necessary. Analysis, simulation, and experimental results are presented with the conventional and optimal currents to verify the effectiveness of flattening radial force sum method in acoustic noise reduction. It is shown that effective acoustic noise reduction and efficiency improvement are confirmed with proposed current reference selection.
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