Title :
Dynamic performance and control of a multilevel universal power conditioner
Author :
Tolbert, Leon M. ; Peng, Fang Z. ; Habetler, Thomas G.
Author_Institution :
Oak Ridge Nat. Lab., TN, USA
Abstract :
This paper presents the development of a control scheme for a multilevel diode-clamped power 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 pulse width modulation (PWM) 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 6-level power conditioner is given
Keywords :
DC-AC power convertors; PWM invertors; compensation; harmonic distortion; power conversion harmonics; power semiconductor diodes; reactive power; voltage control; back-to-back diode-clamped inverters; carrier-based multilevel PWM techniques; control scheme development; harmonic current source; multilevel diode-clamped power converter; multilevel universal power conditioner; reactive current source; series-parallel fashion connection; switch utilization optimisation; utility voltage deviations compensation; Active filters; Control systems; Diodes; Laboratories; Pulse width modulation inverters; Switches; Switching frequency; US Government; Voltage control; Voltage fluctuations;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.799992
