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Analyzing the on-state power dissipation analysis in staircase diode-clamped multi-level inverter


Esfandiari, Ehsan and Mariun, Norman and Marhaban, Mohammad Hamiruce and Zakaria, Azmi (2010) Analyzing the on-state power dissipation analysis in staircase diode-clamped multi-level inverter. IEICE Transactions on Electronics, E93.C (12). pp. 1670-1678. ISSN 0916-8524; ESSN: 1745-1353


In renewable power generators, because of high initial cost and duty cycle of systems, efficiency parameter has an important place. For this reason, line frequency controlled multilevel inverters are one of most proper choices for renewable power converters. Among these, diode-clamped multilevel inverter structures are one of most important and best efficient inverters. In this paper, a simple diode-clamped equivalent circuit for exploring the efficiency under resistive loads is proposed, and based on this simple circuit, the on-state power dissipation in improved and original diode-clamped multilevel inverter under resistive loads is analyzed. Then, comparative efficiency equations are extracted for inverters that use metal oxide semiconductor field-effect transistors (MOSFETs) and other p-n junction as switches. These equations enable us to have a better idea of conducting power dissipation in diode-clamped and help us to choose appropriate switches for having a lower on-state power dissipation. Some cases are studied and in the end it is proven that the calculated efficiency under resistive load is a boundary for inductive load with the same impedance in diode-clamped inverter with p-n junction switches. This means that calculating the efficiency under resistive loads enables us to approximately predict efficiency under inductive loads.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: The Institute of Electronics, Information and Communication Engineers
Keywords: Diode-clamped; Multi-level inverter; On-state; MOSFET; Power dissipation
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 29 Jul 2015 08:41
Last Modified: 31 Dec 2015 02:00
URI: http://psasir.upm.edu.my/id/eprint/13106
Statistic Details: View Download Statistic

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