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논문 기본 정보

자료유형
학술저널
저자정보
Ebrahim Babaei (University of Tabriz)
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전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.11 No.6
발행연도
2011.11
수록면
811 - 818 (8page)

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Modulation strategies for multilevel inverters have typically focused on synthesizing a desired set of sinusoidal voltage waveforms using a fixed number of dc voltage sources. This makes the average power drawn from different dc voltage sources unequal and time varying. Therefore, the dc voltage sources are unregulated and require that corrective control action be incorporated. In this paper, first two new selections are proposed for determining the dc voltage sources values for asymmetric cascaded multilevel inverters. Then two modulation strategies are proposed for the dc power balancing of these types of multilevel inverters. Using the charge balance control methods, the power drawn from all of the dc sources are balanced except for the dc source used in the first H-bridge. The proposed control methods are validated by simulation and experimental results on a single-phase 21-level inverter.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. BASICS OF THE CASCADED MULTILEVEL INVERTERS
Ⅲ. PROPOSED SELECTION OF THE DC VOLTAGE SOURCEVALUES
Ⅳ. CHARGE BALANCE CONTROL METHODS FORSYMMETRIC CASCADED MULTILEVEL INVERTERS
Ⅴ. DEVELOPMENT OF THE CHARGE BALANCE CONTROLMETHODS FOR THE PROPOSED ASYMMETRIC MULTILEVELINVERTERS
Ⅵ. COMPARISON OF THE PROPOSED ASYMMETRICMULTILEVEL INVERTERS WITH THE CONVENTIONALTOPOLOGIES
Ⅶ. SIMULATION AND EXPERIMENTAL RESULTS
Ⅷ. CONCLUSION
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