Fixed-frequency active current controller and low-sensitivity voltage regulator for a voltage-sourced buck-boost type rectifier
✍ Scribed by V. Fernão Pires; J. Fernando Silva; A. J. Pires
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 148 KB
- Volume
- 14
- Category
- Article
- ISSN
- 1430-144X
- DOI
- 10.1002/etep.17
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✦ Synopsis
Abstract
We present an active fixed‐frequency input current controller and a low‐sensitivity output voltage regulator for a voltage‐sourced buck‐boost type rectifier operating in the continuous current mode. The current controller enforces the input line current to track the desired sinusoidal waveform in phase with the input source voltage, ensuring a near‐unity power‐factor operation of the rectifier. The current control strategy actively shapes the input current allowing a near‐sinusoidal input current even with high variations in the DC inductor current. A low‐sensitivity output voltage regulator modulating the amplitude of the sinusoidal reference for the current controller is also proposed. Both the current controller and the voltage regulator are based on sliding‐mode theory. Experimental results are presented and the performance compared to that obtained using a conventional Proportional Integral (PI) output voltage controller. Copyright © 2004 John Wiley & Sons, Ltd.