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Expiremantal results and study of a modified adaptive bus voltage controller

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2 Author(s)
Qahouq, J.A.A. ; Dept. of Electr. & Comput. Eng., Univ. of Alabama, Tuscaloosa, AL, USA ; Muralidhar, G.

Two-stage power conversion is used in many applications. The determination of the bus voltage in two-stage converter is important to achieve high overall power conversion efficiency. Conventional two-stage converters utilize either a fixed DC bus voltage or a variable but predetermined DC bus voltage, which do not necessarily result in an optimum operation with optimum bus voltages under variable conditions. The paper presents a modified adaptive bus voltage controller for two-stage power converter. The controller adaptively converges to the optimum bus voltage that yields to the maximum power conversion efficiency under variable operating conditions. The modified adaptive two-stage bus voltage controller is evaluated using results obtained from a proof of concept experimental prototype.

Published in:

Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE

Date of Conference:

21-25 Feb. 2010