Patent ID: 6828750
Filing Date: 2004-12-07
Classification: H02P

Abstract:
A method of controlling a reluctance torque/permanent magnet motor which has a rotor with a protuberant magnetic polarity, comprising the steps of:comparing on a &ggr; axis an inferred voltage of said &ggr; axis, which is inferred and calculated by using a detected value of a motor current and a motor equivalent circuit constant and a &ggr; axis component voltage applied to a motor, if an inferred axis of a rotor permanent magnet flux direction is defined as a dr axis, a direction orthogonal to said dr axis as a qr axis, and an axis offset by a predetermined angle from said dr axis as said &ggr; axis; and inferring and calculating a phase difference (a phase angle) of said dr axis so that a deviation thereof substantially becomes zero.