Sharma, R. and Ball, J. A. R. (2009) Unipolar stitched inverter low-frequency harmonics caused by stitching delay. IET Power Electronics, 2 (5). pp. 508-516. ISSN 1755-4535
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Official URL: http://dx.doi.org/10.1049/iet-pel.2008.0133
Identification Number or DOI: doi: 10.1049/iet-pel.2008.0133
Unipolar switched single-phase inverters experience lower switching losses and generate less electro-magnetic interference (EMI) when compared with bipolar switched inverters. However, these benefits come at the expense of increased distortion in the current waveform near the voltage zero crossing. Furthermore, it is demonstrated in this paper that circuit delay is a major cause of the generation of low-frequency harmonics (LFH). A new analytical method to explain why circuit delays are responsible for the generation of LFH in unipolar switched inverters, and not in bipolar switched inverters, is presented. Numerical results calculated from this theory are compared with simulation and experimental results to illustrate this relationship.
|Item Type:||Article (Commonwealth Reporting Category C)|
|Uncontrolled Keywords:||electromagnetic interference; harmonic analysis; invertors; numerical analysis|
|Fields of Research (FOR2008):||09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering|
01 Mathematical Sciences > 0101 Pure Mathematics > 010106 Lie Groups, Harmonic and Fourier Analysis
09 Engineering > 0906 Electrical and Electronic Engineering > 090607 Power and Energy Systems Engineering (excl. Renewable Power)
|Socio-Economic Objective (SEO2008):||E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering|
|Deposited On:||18 Mar 2010 17:38|
|Last Modified:||05 Dec 2011 14:01|
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