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Title: Single-carrier phase-disposition PWM techniques for multiple interleaved voltage-source converter legs
Authors: Konstantinou, Georgios
Capella, Gabriel J.
Pou, Josep
Ceballos, Salvador
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2017
Source: Konstantinou, G., Capella, G. J., Pou, J., & Ceballos, S. (2018). Single-carrier phase-disposition PWM techniques for multiple interleaved voltage-source converter legs. IEEE Transactions on Industrial Electronics, 65(6), 4466-4474. doi:10.1109/TIE.2017.2767541
Journal: IEEE Transactions on Industrial Electronics 
Abstract: Interleaved converter legs are typically modulated with individual carriers per leg and phase-shifted pulse width modulation (PS-PWM) as it facilitates current balancing amongst the legs. Phase-disposition PWM (PD-PWM), despite the better harmonic performance, cannot be directly used due to the resulting current imbalance that may damage the converter. This paper addresses the current sharing issue and proposes a sorting algorithm implementation that enables single-carrier PD-PWM technique for interleaved two-level converter legs. An extension of the proposed algorithm through a switching state feedback loop, limiting the average switching frequency, is also developed. In both cases, the output current is of high quality and shared amongst the phase-legs, while the deviation between the phase-leg currents is well regulated. Simulation results demonstrate the general function of method for multiple interleaved legs as well as its current sharing capabilities for high-power applications. Experimental results from a low-power laboratory prototype validate the operation of the proposed approach.
ISSN: 0278-0046
DOI: 10.1109/TIE.2017.2767541
Rights: © 2017 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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