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Conventional model for interior permanent magnet synchronous motor (IPMSM) utilizes only the fundamental component of flux linkages in the abc reference frame that means the flux linkages in d- and q- axes are constant quantities with rotor position. An extended analytical model of IPMSM is presented in this paper that incorporates the fundamental as well as the harmonics of flux linkages. The harmonics...
In this paper, one new machine family, i.e. named as flux-modulation machines which produce steady torque based on flux-modulation effect is proposed. The typical model including three components-one flux modulator, one armature and one excitation field exciters of flux-modulation machines is built. The torque relationships among the three components are developed based on the principle of electromechanical...
A series of 12-slot 8-pole concentrated winding IPM synchronous motors (IPMSMs) are analyzed to understand the impact that certain design changes may have on performance over a wide speed range. Basic theory of operation is used to describe desirable characteristics; investigations are carried out to show how these characteristics may be realized through rotor design changes. Simulations are conducted...
The purpose of this paper is to characterize the performance of a novel dual-stator six slot four pole (6/4) flux switching permanent magnet machine. The proposed dual-stator 6/4 topology eliminates even order harmonics in the flux linkage and back electromotive force, which are present in the conventional single stator topology. The resulting back electromotive forces of the proposed dual-stator...
A computationally efficient method is presented to investigate additional cogging torque harmonics resulting from misalignment of the rotor and stator caused by assembly and manufacturing tolerances in an axial flux, fractional pitch PMSM. The hybrid analytical / FEA method utilizes superposition of a pole transition over a single stator slot and is used to predict the effect on cogging torque of...
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