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D- and q-axis inductances are crucial parameters influencing motor performance. An inductance calculation method based on quasi-3D analytical model for axial flux permanent magnet synchronous motors with combined magnetic poles with fractional slot concentrated windings is proposed. The complex magnetic circuits and variable magnetic saturation states at different radii are considered by the proposed...
Based on the need for sensor-less control of interior permanent magnet (IPM) brushless motors, a computer-aided design method for phase inductance optimization is put forward. With this method, repeated manual design process is alleviated, and ideal phase inductance waves can be obtained which is beneficial to sensor-less control of IPM brushless motors. Besides, cogging torque is reduced and motor...
In this paper, a method using the balanced three-phase carrier frequency component signals is presented to estimate the initial rotor position of an interior permanent magnet synchronous motor (IPMSM). Taking advantage of the structural saliency in an IPMSM, the rotor spatial saliency position is expressed as a function of the envelope of the carrier frequency component currents in α-β frame. The...
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