This study deals with a newly-conceived voltage control method for three-phase four-leg voltage source inverters (VSIs) which are being required in autonomous power generating units devoted to supply both three-phase and single-phase electrical loads in four-wire electric power distribution systems. To deal with VSI operating conditions providing three-phase voltage supply of both unbalanced loads and non-linear loads, an integral + resonant (I + R) voltage control structure is discussed and experimentally verified by means of a 25 kVA rated power converter prototype. It is shown that the proposed voltage control allows simplifying the overall control configuration, achieving zero-overhead power factor regulation and fast compensation of load unbalances. Further to that, a complete current limiting strategy is described and tested under different load conditions.

Lidozzi, A., Lo Calzo, G., Solero, L., Crescimbini, F. (2014). Integral-resonant control for stand-alone voltage source inverters. IET POWER ELECTRONICS, 7(2), 271-278 [10.1049/iet-pel.2013.0121].

Integral-resonant control for stand-alone voltage source inverters

LIDOZZI, ALESSANDRO;SOLERO, LUCA;CRESCIMBINI, Fabio
2014-01-01

Abstract

This study deals with a newly-conceived voltage control method for three-phase four-leg voltage source inverters (VSIs) which are being required in autonomous power generating units devoted to supply both three-phase and single-phase electrical loads in four-wire electric power distribution systems. To deal with VSI operating conditions providing three-phase voltage supply of both unbalanced loads and non-linear loads, an integral + resonant (I + R) voltage control structure is discussed and experimentally verified by means of a 25 kVA rated power converter prototype. It is shown that the proposed voltage control allows simplifying the overall control configuration, achieving zero-overhead power factor regulation and fast compensation of load unbalances. Further to that, a complete current limiting strategy is described and tested under different load conditions.
2014
Lidozzi, A., Lo Calzo, G., Solero, L., Crescimbini, F. (2014). Integral-resonant control for stand-alone voltage source inverters. IET POWER ELECTRONICS, 7(2), 271-278 [10.1049/iet-pel.2013.0121].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/120851
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