Publisher : The Korean Institute of Power Electronics
DOI : 10.6113/JPE.2016.16.1.142
Title & Authors
Carrier Based Common Mode Voltage Reduction Techniques in Neutral Point Clamped Inverter Based AC-DC-AC Drive System Ojha, Amit; Chaturvedi, Pradyumn; Mittal, Arvind; Jain, Shailendra;
Common mode voltage (CMV) generation is a major problem in switching power converter fed induction motor drive systems. CMV is the zero sequence voltage generated due to the switching action of power converters. Even a small magnitude of CMV with a high rate of change may circulate large bearing currents which may damage a machine`s bearings and shorten its life. There are several methods of controlling CMV. This paper presents 3-level sinusoidal pulse width modulation based techniques to control the magnitude and rate of change of CMV in multilevel AC-DC-AC drive systems. Simulation and experimental investigations have been presented to validate the performance of proposed technique to control CMV in 3-level neutral point clamped inverter based AC-DC-AC system.
AC-DC-AC Drives;Common Mode Voltage Control;Neutral Point Clamped Inverter;Switching Converters;
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