Abstract:The operation of variable speed ac drives with loss-minimizing flux strategies can produce important energy savings. This paper proposes algorithms for the evaluation of loss power components, and the flux level that produces minimum loss operating condition, covering the whole constant torque operating region. Both scalar and vector drives are considered, although it is found that the operation of scalar and vector controlled drives with optimum flux (or d-axis current) gives very similar results for the same… Show more
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