Optimized Pulse Patterns for Salient Synchronous Machines

Abstract

Synchronous optimal pulse width modulation is commonly applied when the ratio between the fundamental frequency and the switching frequency is low. The offline computed pulse patterns are optimized in terms of harmonic distortion in the phase currents. Usually, the underlying optimization problem is based on a simple inductor model representing the harmonic behavior of one phase of a nonsalient machine. This paper proposes an alternative formulation of the optimization problem which generalizes it for salient machine types. An investigation of the optimization results' sensitivity to operating point dependent parameters is presented.

Authors 3

1. Nina Hartgenbusch Aachen Institute for Power Electronics and Electrical Drives (ISEA)

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Institute for Power Electronics and Electrical Drives,Aachen,Germany

   Institute for Power Electronics and Electrical Drives, RWTH Aachen University, Aachen, Germany

2. Rik W. De Doncker Aachen Institute for Power Electronics and Electrical Drives (ISEA)

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Institute for Power Electronics and Electrical Drives,Aachen,Germany

   Institute for Power Electronics and Electrical Drives, RWTH Aachen University, Aachen, Germany

3. Anna Thünen Aachen Institute for Geometry und Practical Mathematics

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Institute for Geometry und Practical Mathematics,Aachen,Germany

   Institute for Geometry und Practical Mathematics, RWTH Aachen University, Aachen, Germany