Publication Type:

Conference Paper

Source:

2010 Joint International Conference on Power Electronics, Drives and Energy Systems, PEDES 2010 and 2010 Power India, New Delhi (2010)

ISBN:

9781424477821

URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-79952728558&partnerID=40&md5=c4704ccb60e6a46b901298c29072dbd9

Keywords:

Amplitude modulation, Analytical method, Design and control, Design of electrical machines, Eddy current-loss, Eddy currents, Electric machinery, Electric power supplies to apparatus, Electrical machine, Energy efficiency, Finite element analysis, Finite element method, Harmonic analysis, Harmonic components, High-frequency harmonics, Iron loss, Machine design, Output voltages, Power electronics, Pulse width, PWM converter, PWM inverter, PWM supply, PWM Switching, Renewable energy resources, Renewable energy systems, Switching frequency, Three-phase transformers, Total harmonic distortions, Utility grids

Abstract:

Pulse width-modulated (PWM) inverters are used more and more to operate electrical machines and to interface renewable energy systems with the utility grid. However, there are abundant high-frequency harmonics in the output voltage of a PWM inverter, which increase the iron losses and result in derating of the machine or transformer connected to them. Predicting the iron losses caused by the PWM supply is critical for the design of electrical machines and transformers operated by PWM inverters. These losses are primarily attributed to eddy-current loss caused by the PWM supply. In this paper, after analyzing the harmonic components of PWM inverter voltage, the effects of different parameters of PWM switching on the eddy-current loss has been derived. The iron loss modelled with the proposed analytical methods on a three-phase transformer and is compared with the results of finite element analysis. This paper presents detailed equations for the prediction of iron loss. These equations can be directly applied in the design and control of PWM converters and electric motors to improve energy efficiency and reduction in total harmonic distortion in electrical machines and transformers operated by PWM converters.

Notes:

cited By (since 1996)0; Conference of org.apache.xalan.xsltc.dom.DOMAdapter@740334f9 ; Conference Date: org.apache.xalan.xsltc.dom.DOMAdapter@7e8b02ef Through org.apache.xalan.xsltc.dom.DOMAdapter@586dd9d0; Conference Code:84171

Cite this Research Publication

R. Mayuri, Sinnou, N. R., and K. Ilango, “Eddy current loss modelling in transformer iron losses operated by PWM inverter”, in 2010 Joint International Conference on Power Electronics, Drives and Energy Systems, PEDES 2010 and 2010 Power India, New Delhi, 2010.