Title :
Single-phase step-up/down current-source rectifier with suppressed resonance
Author :
Itoh, R. ; Ishizaka, K.
Author_Institution :
Fac. of Eng., Fukuoka Univ., Japan
Abstract :
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.<>
Keywords :
bridge circuits; circuit resonance; digital control; electric current control; power convertors; rectifying circuits; state-space methods; switching circuits; two-term control; current-source Cuk power convertor; current-source rectifier; digital PI controller; diode bridge rectifier; near-unity power factor; output current; parallel inductance-capacitance circuit; resonant frequency; single-phase; state-space analyses; step-down; step-up; suppressed resonance; switching strategy; Bridge circuits; Current control; Digital control; Power conversion; Proportional control; Rectifiers; State space methods; Switching circuits;
Journal_Title :
Electric Power Applications, IEE Proceedings
DOI :
10.1049/ip-epa:19949857
