A Simple And Low Cost Modulation Technique For Single-Phase Multilevel Cascade Converters Based On Geometrical Considerations
2008 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY, VOLS 1-5(2008)
摘要
This paper presents a space vector modulation technique for use on a single phase cascaded H-bridge converter. These converters have a modular design and are able to produce output waveforms of high voltage and superior quality. A simple strategy to control the DC voltage ratio between the H-bridges of the multilevel converter is presented, which has a low computational cost, making it ideal for practical implementation without the need for high performance processing. Examples for the single-phase two-cell topology are shown but the proposed technique can be applied to develop space vector modulation methods for a higher number of H-bridges. Simulation results are presented to validate the proposed methods.
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关键词
Multilevel systems, Modulation, Voltage Control
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