Analysis of Current Signals in a Partially Demagnetized Vector Controlled Interior Permanent Magnet Generator

This manuscript analyses the operation of an Interior Permanent Magnet (IPM) machine working as a Permanent Magnet Synchronous Generator (PMSG). The partial demagnetization operation is analyzed. In order to obtain more accurate voltages and currents of the machine, the Finite Element Analysis (FEA) is used in co-simulation with the full converter and the converter’s control algorithm. The Direct Field Oriented Control (DFOC) shows robustness by maintaining the speed even with a 25% demagnetized PMSG. Also, an analysis of the rotating reference frame DQ signals is done in order to asses demagnetization.

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