KIT | KIT-Bibliothek | Impressum | Datenschutz

Mitigation of Current Harmonics in Inverter-Fed Permanent Magnet Synchronous Machines with Nonlinear Magnetics

Richter, Jan; Lannert, Thomas; Gemassmer, Tobias,; Doppelbauer, Martin

Inverter nonlinearities and machine spatial harmonics yield unwanted machine current harmonics, causing control loop instabilities, additional losses and torque ripples. In this paper a method is presented that allows online identification and compensation of both effects for anisotropic permanent magnet synchronous machines with nonlinear magnetics. The method requires no additional sensors and only fundamental component machine model parameters. It can be implemented easily in existing inverter systems by software updates. Test bench measurements show significant improvements in the whole operational area. Measurements at nominal operation result in a motor current total harmonic distortion of 0.28 % which is less than a seventh of the uncompensated value. The functional principle is transferable to other machine types or grid applications enabling the mitigation of current harmonics in a wide field of applications.

Open Access Logo

Volltext §
DOI: 10.5445/IR/1000048319
Cover der Publikation
Zugehörige Institution(en) am KIT Elektrotechnisches Institut (ETI)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2015
Sprache Englisch
Identifikator ISBN: 978-3-8007-3924-0
KITopen-ID: 1000048319
Erschienen in PCIM Europe 2015 : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nuremberg, 19 - 21 May 2015 ; proceedings
Verlag VDE Verlag
Seiten 725-732
Bemerkung zur Veröffentlichung Erstveröffentlichung des Papers auf der PCIM Europe 2015 Conference, 19. - 21. Mai 2015, Nürnberg (
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page