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A multilevel converter-based universal power conditioner

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3 Author(s)
Tolbert, L.M. ; Dept. of Electr. & Comput. Eng., Tennessee Univ., Knoxville, TN, USA ; Fang Zheng Peng ; Habetler, T.G.

This paper presents the development of a control scheme for a multilevel diode-clamped converter connected in a series-parallel fashion to the electrical system such that it can compensate for deviations in utility voltage (sag, surge, and unbalance) and act as a harmonic and/or reactive current source for a load. New carrier-based multilevel pulsewidth modulation techniques are identified to maximize switch utilization of the two back-to-back diode-clamped inverters that constitute the universal power conditioner. An experimental verification for a six-level power conditioner is given

Published in:

Industry Applications, IEEE Transactions on  (Volume:36 ,  Issue: 2 )