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Line Current Characteristics of Multilevel H-Bridge Inverters: Part I - Connection of Input Transformer and Phase Shift Characteristics  

Jeong, Seung-Gi (광운대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.3, 2008 , pp. 229-236 More about this Journal
Abstract
Recently, multilevel H-bridge inverters have become popular in medium to high power ac drive applications. One of significant advantages of them is low harmonic contents in their input line currents thanks to the transformer with multiple phase-shifted secondary windings. This paper attempts to provide basic guidelines for the design of the phase shifting transformer windings and theoretical analysis of input line current harmonics of H-bridge inverters. The part I provides the derivation of basic relationships between input and output current of the transformer and the relationship between the phase shifting characteristics and design aspects of the transformer.
Keywords
Multilevel inverter; H-bridge inverter; Extended-delta winding; Harmonics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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