Abstract
This paper presents a nonlinear controller applied to a parallel connected system of Half-Bridge with Current-Doubler Rectifier (HB-CDR) converters. The proposed control scheme is able to decouple the output-voltage dynamics from the input-stage variables, endowing high robustness of the output voltage against external disturbances. In addition, the inner average-current loop of the controller achieves good load sharing among modules in spite their parametric variations. The controller design is developed in three steps. First, the large-signal model of the parallel-connected HB-CDR system is obtained. Second, the controller expression is conceived through input-output linearization theory taking into account two control objectives: the regulation of the output-voltage and the equal current distribution among modules. And third, the control parameters are determined to obtain a proper dynamics, while ensuring the stability of the whole system.
Originalsprog | Engelsk |
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Publikationsdato | dec. 2004 |
Antal sider | 6 |
DOI | |
Status | Udgivet - dec. 2004 |
Udgivet eksternt | Ja |
Begivenhed | 2004 IEEE International Symposium on Industrial Electronics, IEEE-ISlE - Varighed: 4 maj 2004 → 7 maj 2004 |
Konference
Konference | 2004 IEEE International Symposium on Industrial Electronics, IEEE-ISlE |
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Periode | 04/05/2004 → 07/05/2004 |