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PM temperature measurement/estimation in permanent magnet synchronous machines (PMSMs) is convenient both for torque control and monitoring purposes. Most of existing methods provide and averaged/punctual temperature. However, PM temperature distribution is not uniform, which can have unexpected adverse effects like reduced accuracy estimating the torque produced by the machine or local demagnetization...
Permanent magnet (PM) magnetization state estimation is important for torque control/monitoring in conventional permanent magnet synchronous machine (PMSM), e.g. interior PMSM (IPMSM) and surface PMSM (SPMSM). Furthermore, this can be critical for variable flux machines (VFM) or spoke-type ferrite magnet motors (STFMM). PM magnetization state can change during normal operation of the machine, either...
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