1. Unity Power Factor Isolated Three-Phase Rectifier With Two Single-Phase Buck Rectifiers Based on the Scott Transformer.
- Author
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Badin, Alceu André and Barbi, Ivo
- Subjects
- *
ELECTRIC current rectifiers , *ELECTRIC transformers , *ELECTRIC power factor , *PULSE width modulation , *ELECTRIC inductors , *ELECTRIC potential , *REACTIVE power - Abstract
This paper proposes an isolated three-phase rectifier power-factor correction using two single-phase buck preregulators in continuous conduction mode. The use of the Scott transformer renders a simple and robust rectifier to operate with unity power factor. With only two active switches, the rectifier is able to generate symmetrical currents in the line and a regulated voltage output without any necessary synchronous switches. The proposed control technique with sinusoidal pulse width modulation uses a feedforward of the output inductor current and only one voltage control regulates the output. Complete simulation results under closed-loop operation are given and a 12-kW prototype has been implemented in the laboratory, which demonstrated to operate successfully with excellent performance, and thus can feasibly be implemented in higher power applications. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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