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An Analytical Method for Generating Determined Torque Ripple in Synchronous Machine with Interior Magnets by Harmonic Current Injection

Vollat, Matthias; Li, Junchao; Gauterin, Frank

Abstract (englisch):
In this paper, we present an extension for an analytical method of calculating the required amplitudes and phase angles of the injected harmonic currents, to generate a determined torque ripple for synchronous machines. With the consideration of reluctance torque in the system equations, this method is valid not only for synchronous machines with surface magnets, but also for those with interior magnets. First, we describe the machine equations as a function of the phase current and the back electromotive force. We then introduce an analytical way to calculate the reluctance torque. After combining the equations, we establish a linear system of equations. The solution of the equation system yields the amplitudes and phase angles of the harmonic currents to be injected. Finally, we validate the equations for calculating the reluctance Torque and the method to generate the determined torque ripple with several finite element method simulations. This allowed us to generate the desired torque fluctuations even for synchronous machines with interior magnets.

Verlagsausgabe §
DOI: 10.5445/IR/1000124884
Veröffentlicht am 20.10.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Fahrzeugsystemtechnik (FAST)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2075-1702
KITopen-ID: 1000124884
Erschienen in Machines
Verlag MDPI
Band 8
Heft 4
Seiten 62
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfond
Vorab online veröffentlicht am 15.10.2020
Schlagwörter harmonic current injection; permanent magnet synchronous machines; interior magnets; analytical method; torque ripple
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