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In this paper the application of Active Disturbance Rejection Control (ADRC) for discrete-time field-oriented PMSM current control is discussed. ADRC offers an interesting alternative to established current control algorithms due to the considerably simplified control engineering process. After introducing the ADRC approach and the plant model, the possibilities for tuning the controller and the comprised state space observer are examined in detail. In particular, the adequate consideration of the modulator delay in the ADRC’s extended state observer is investigated, leading to a new ADRC current control algorithm. This allows a parameterization for very fast dynamics, so that almost deadbeat behavior is achievable. All investigations are validated by means of practical measurements.
