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Accurate information of rotor permanent magnet field is needed in permanent magnet synchronous motor(PMSM) control, but this information is variable under demagnetization conditions, such as high temperature or peak current. Nonsinusoidal flux density distribution caused by demagnetization induces to torque ripple, which degrades the PMSM drive performance. To estimate flux magnitude, a Kalman filter...
In order to get good control performance in permanent magnet synchronous motor (PMSM) control fields, the accurate permanent magnet flux linkage (rotor flux linkage) value is needed. For stator flux estimation and full order or reduced order observer, the rotor flux linkage is treated as a known and constant parameter. But in applications, the rotor flux linkage can vary in a wide range. In this paper,...
Interior permanent magnet synchronous motor (IPMSM) which has magnets buried in the rotor core possesses mechanically robust construction, can be used in high-speed application by incorporating the field-weakening technique. Performance control of IPMSM needs accurate information of rotor angle and angular speed. During recent years, sensorless drives of permanent-magnet synchronous motors have attracted...
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