Performance Degradation of Surface PMSMs with Demagnetization Defect under Predictive Current Control

Performance Degradation of Surface PMSMs with Demagnetization Defect under Predictive Current Control

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To control the current of a surface mounted permanent magnet synchronous machine fed by a two-level voltage source inverter, a large variety of control algorithms exists.Each of these controllers performs differently concerning dynamic performance and control- and voltage quality, pax 3 onyx but also concerning sensitivity to demagnetization faults.Therefore, this paper investigates the performance degradation of three advanced predictive controllers under a partial demagnetization fault.The three predictive controllers are: finite-set model based predictive control, deadbeat control, and a combination of both previous algorithms.To achieve this goal, the three predictive controllers are first compared under healthy conditions, and afterwards under a partial demagnetization fault.

A PI controller is added to the comparison in order to provide a model-independent benchmark.Key performance indicators, obtained from both simulations and experimental results on a 4 kW axial flux permanent magnet synchronous machine with yokeless and segmented armature topology, are introduced rhonda allison eye and lip renew serum to enable a quantification of the performance degradation of the controllers under a demagnetization fault.A general conclusion is that the deadbeat controller shows superior control quality, even under partial demagnetization.