Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2014.9.4.1324
Title & Authors
Compensation PWM Technique for Extended Output Voltage Range in Three-Phase VSI Using Three Shunt Resistors Shin, Seung-Min; Park, Rae-Kwan; Lee, Byoung-Kuk;
This paper proposes a compensation PWM technique for the extension of output voltage ranges in three-phase VSI applications using three shunt resistors. The proposed technique aims to solve the dead zone, which occurs in high modulation indexes. In the dead zone, two phase currents cannot be sampled correctly, so that the three-phase VSI cannot be operated up to the maximum output voltage. The dead zone is analyzed in detail, and the compensation PWM algorithm is developed. The proposed algorithm is verified by numerical analysis and experimental results.
Three phase currents sampling;Shunt resistors;Minimum required turn-on time;Three-phase voltage source inverter;
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