Investigating DC-link voltage ripple in multi-phase diode-clamped three level inverters

Fletcher, J.E. and Gao, L. and Reay, D. (2007) Investigating DC-link voltage ripple in multi-phase diode-clamped three level inverters. International Review of Electrical Engineering, 2 (1). pp. 68-70. ISSN 1827-6660

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Abstract

Diode-clamped, three-level, three-phase inverters display mid-point voltage excursions that cause low-frequency harmonic distortion in the output voltage spectrum. This paper illustrates that a significant reduction in the excursion is achieved by adopting a multi-phase approach. Practical and simulation results are presented.