Symmetry Relaxation of Three-Level Optimal Pulse Patterns for Lower Harmonic Distortion | ||||||
Author(s) | Annika BIRTH | |||||
Abstract | Pulse width modulation by optimized pulse patterns lowers the harmonic current distortions in high power converters as a result of a specifically designed optimization problem. The typically imposed quarter- and half-wave symmetry on the switching signal adds artificial restrictions to the optimization problem, which leads to suboptimal solutions. Relaxing these symmetry restrictions, a general optimization problem is formulated, which achieves up to 30\% lower harmonic distortions. | |||||
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Type | Members Only | |||||
Date | Last modified 2020-08-14 by System | |||||
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