Five-Level Diode-Clamped Inverter With Three-Level Boost Converter

• Main Authors: Rosmadi, Abdullah, Nasrudin, Abd Rahim, Siti Rohani, Sheikh Raihan, Abu Zaharin, Ahmad
• Format: Article
• Language: English
• Published: IEEE USA 2014
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://umpir.ump.edu.my/id/eprint/8085/1/Five-Level%20Diode-Clamped%20Inverter%20With%20Three-Level%20Boost%20Converter.pdf; http://umpir.ump.edu.my/id/eprint/8085/; http://dx.doi.org/10.1109/TIE.2013.2297315
• Institution: Universiti Malaysia Pahang

This paper proposes an active front-end solution to balance the dc-link capacitor voltage of the five-level diode clamped inverter. Capacitor voltage balancing is performed by a three-level boost converter connected to the two inner capacitors of a five-level diode-clamped inverter and additional balancing circuits at the other two outer capacitors. The proposed configuration is tested through simulation and experiment for various load power factor conditions at a high modulation index. The result demonstrates the reliability of the proposed configuration to balance the dc-link capacitor voltage at the desired level.