Effects of space vector modulation strategy on hybrid (Si-SiC) inverter losses

Effects of space vector modulation strategy on hybrid (Si-SiC) inverter losses This work summarizes efficiency measurement results of a full bridge, 3 phase inverter composed of state-of-the-art Si IGBT transistors and Si or SiC diodes. Different (symmetrical and discontinuous) space vector modulati...

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Bibliographic Details
Published in:Archives of Electrical Engineering (Online) 2012-01, Vol.61 (1), p.69
Main Authors: Bonislawski, Michal, Holub, Marcin
Format: Article
Language:English
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Summary:Effects of space vector modulation strategy on hybrid (Si-SiC) inverter losses This work summarizes efficiency measurement results of a full bridge, 3 phase inverter composed of state-of-the-art Si IGBT transistors and Si or SiC diodes. Different (symmetrical and discontinuous) space vector modulation strategies were chosen in order to examine their influence (together with modulation frequency) on inverter losses. Induction machine was used as load, different load points were examined. Results clearly show, that proper modulation strategy, minimizing the switching losses of semiconductor switches, can increase the overall output efficiency at about 1% in case of both silicon and hybrid constructions. The drawback of DPWM approach is connected with the decreased quality of inverter output current. Hybrid technology can also improve the output efficiency at about 1% when compared to traditional constructions, but only in case of elevated switching frequencies. At low frequencies (below 10 kHz) modern semi-conductors offer comparable results at much lower device costs.
ISSN:1427-4221
2300-2506
DOI:10.2478/v10171-012-0006-2