A comprehensive study of neutral-point voltage balancing problem in three-level neutral-point-clamped voltage source PWM inverters
- 1 January 1999
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 1, 535-541 vol.1
- https://doi.org/10.1109/apec.1999.749733
Abstract
This paper explores the fundamental limitations of neutral-point voltage balancing problem for different loading conditions of three level voltage source inverters. A new model in DQ coordinate frame utilizing current switching functions is developed, as a means to investigate theoretical limitations and lend more intuitive insight into the problem. The low frequency ripple of the neutral point caused by certain loading conditions is observed and quantified.Keywords
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