Control Strategy for a Multiphase Lundell-Alternator/Active-Rectifier System in 14 V Automotive Power Systems

This paper presents a novel control strategy for a conventional six-phase Lundell alternator fed at the output with a MOSFET-based active rectifier. The signal references for the controller are calculated from a cost-function aiming to minimize the alternator stator copper losses in an effort to maximize the alternator–rectifier system overall efficiency. The system is initially simulated and tuned in MATLAB/Simulink and then experimentally verified. The steady-state efficiency results from experimental measurements of the alternator/rectifier system are compared against a standard passive rectifier. The results indicate a better overall efficiency compared to the passive rectifier, for an alternator speed of up to approximately 5000 rpm, corresponding to city driving.


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  • Accession Number: 01714027
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 21 2019 8:56AM