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Modeling and design of a novel voltage control system for three phase fixed frequency static power supplies

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2 Author(s)
Tripathi, A. ; Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada ; Dewan, S.B.

Pulse width modulated voltage source inverters (PWM VSI) for uninterruptible power supply (UPS), parallel redundant system applications require fast acting inverter output current and voltage control. This paper describes a multivariable state feedback control technique for the design of the voltage regulator for a three-phase current controlled PWM VSI. The control method provides a fast response and robust control (insensitive to plant parameter variations) of the load voltage in the presence of load/line disturbances. The voltage regulator is operated in the rotating d-q frame in synchronism with the fundamental frequency. The state space model of the plant of the voltage regulator is developed in the d-q frame. The description and analysis of the voltage control method is presented. A simple procedure to design the voltage regulator has been outlined and digital simulations are carried out which demonstrate the excellent dynamic performance of the voltage control system

Published in:

Industry Applications Conference, 1995. Thirtieth IAS Annual Meeting, IAS '95., Conference Record of the 1995 IEEE  (Volume:3 )

Date of Conference:

8-12 Oct 1995