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KMID : 0896220030230010323
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Journal of Daegu Health College
2003 Volume.23 No. 1 p.323 ~ p.339
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A Study on Feedback Controller for Multi-Level Converter
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Chun Jung-Ham
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Abstract
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The converter is composed of a series connection of individual single phase converters. The number of the input current levels depends on the number of the individual inverters in series and their input current level. In this converter circuit, the number of the levels is equal to 2m+1, 2^((m+1))-1 or 3^(m) where m is the number of switching-legs used. If the number of current levels is increased, smoother sinusoidal waveform can be obtained directly. This paper discusses sing1e-phase AC-DC converter that driven by binary combination at different transformer winding ratio. It has a advantage that constructs a control system simply and obtain load current of good quality without filter circuit and free from noise or isolation for lower switching frequency. Also, this has merit that can do high power capacity. In this research, study on feedback circuit that consist for load stability of AC-DC multi-level converter.1
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