NDLI: Inverter Switching Frequency Effects on the Rotor Losses of an Axial-Flux Solid-Rotor Core Induction Motor

Content Provider	IEEE Xplore Digital Library
Author	Valtonen, M. Parviainen, A. Pyrhonen, J.
Copyright Year	2007
Description	Author affiliation: AXCO-Motors Oy, Laserkatu 6, 53850 Lappeenranta, Finland (Parviainen, A.) \|\| Prof., Lappeenranta University of Technology, Department of the Electrical Engineering, P.O. Box 20, 53851 Lappeenranta, Finland (Pyrhonen, J.) \|\| Lappeenranta University of Technology, Department of the Electrical Engineering, P.O. Box 20, 53851 Lappeenranta, Finland. mikko.valtonen@lut.fi (Valtonen, M.)
Abstract	The influence of the switching frequency of an inverter on the performance of rotor losses of an axial-flux (AF) solid-rotor core induction motor is studied. Inverter supply is known to create additional power losses in an induction machine over those occurring with grid supply. Inverter output creates an amount of losses especially in solid-rotor motors. Power loss measurements at no-load conditions are considered with the switching frequency from 1 kHz up to 12 kHz. Different rotor losses due to the switching frequency by pulse width modulation (PWM) inverter are considered by two dimensional (2D) finite element (FE) calculations. Measured stator current waveforms were used as inputs in the 2D finite element analysis (FEA) where the rotor losses were calculated. It is seen that the additional losses are about inversely proportional to the switching frequency between 1 - 6 kHz and after that constant. Both measurements and 2D FEM analysis support the observation.
Starting Page	476
Ending Page	480
File Size	1207773
Page Count	5
File Format	PDF
ISBN	9781424408948
DOI	10.1109/POWERENG.2007.4380121
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-12
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation inverters Induction motors Power measurement Switching frequency Rotors Loss measurement Performance loss Frequency measurement Finite element methods Induction machines
Content Type	Text
Resource Type	Article

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