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Single-phase step-up/down current-source rectifier with suppressed resonance

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2 Author(s)
Itoh, R. ; Fac. of Eng., Fukuoka Univ., Japan ; Ishizaka, K.

The paper presents a novel single-phase, single-way, current-source rectifier. This is based on the cascade combination of a diode bridge rectifier and a current-source Cuk power convertor. The supply current can be sinusoidally waveshaped with suppressed resonance by an appropriate switching strategy, whereas a parallel inductance-capacitance circuit of a conventional form excites the resonant frequency. Furthermore, step-up and step-down characteristics of the output current and near-unity power factor operation can be obtained. To predict steady-state and transient characteristics of the rectifier with a digital PI controller, rigorous and approximate state-space analyses are introduced. The experimental and predicted results confirm the usefulness of the rectifier presented.<>

Published in:

Electric Power Applications, IEE Proceedings  (Volume:141 ,  Issue: 1 )