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Development of 3,300V 1MVA Multilevel Inverter using Series H-Bridge Cell  

박영민 (현대중공업 기계전기연구소)
김연달 (현대중공업 기계전기연구소)
이현원 (현대중공업 기계전기연구소)
이세현 (현대중공업 기계전기연구소)
서광덕 (현대중공업 기계전기연구소)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.8, no.6, 2003 , pp. 478-487 More about this Journal
Abstract
In this paper, a type and special feature of Multi-level inverter used in medium-voltage and high-capacity motor driver is introduced. Especially, a power quality and structural advantages of H-Bridge Multi-level inverter is described. It presented the specific structure of power circuit, design method, controller composition and PWM techniques of the cascaded H-Bridge Multi-level inverter which is developed. The feasibility of the developed product based on 3,300V lMVA 7-level H-bridge inverter was studied by experiments and we get conclusion that 1)generate of near-sinusoidal output voltage; 2)is low dv/dt at output voltage; 3)reduce the harmonic injection at input; Experiment demonstrate that it is very economical in productivity because of using the existing production technique and examination equipment, and has the reliability and a good maintenance due to the structure of Power Cell unit combination as well as low cost IGBT.
Keywords
Multilevel Inverter; Cascaded H-Bridge; Power Cell; Phase Shift; De-Rating Operation; Multi-Phase Transformer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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