Analysis of the Magneto-Mechanical Characteristic of Double Three-phase PMSM
Олександр Макарчук, Bohdan Kharchyshyn, Лідія Каша
Abstract
The article studies the performance of a multiphase brushless synchronous motor with excitation from permanent magnets (PMSM). The motor has two sets of independent and unconnected three-phase windings on the stator, which resulting magneto-move forces are shifted by 30 electrical degrees. These windings are supplied with two independent three-phase current systems. The study is based on the analysis of the so-called magnetic mechanical characteristic (MMC) as a multidimensional dependence of the flux linkages of the phase windings and the machine electromagnetic torque from all phase currents and the angle of the rotor position. The analysis is based of the FEM calculation of the 2D machine magnetic field. The mutual influence of dependent and independent MMC variables have been researched with changes in the magnitude of load currents, the initial phases of these currents and the angle of the rotor position. The obtained calculation results are analyzed with regard to the expansion of the machine speed range in the constant power mode at field-oriented control (FOC).