{New wide input voltage range three-phase unity power factor rectifier formed by integration of a three-switch buck-derived front-end and a DC/DC boost converter output stage}

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Title{New wide input voltage range three-phase unity power factor rectifier formed by integration of a three-switch buck-derived front-end and a DC/DC boost converter output stage}
Publication TypeConference Paper
Year of Publication2000
AuthorsBaumann M, Drofenik U, Kolar JW
Conference NameTelecommunications Energy Conference, 2000. INTELEC. Twenty-second International
ISBN NumberVO -
KeywordsAC-DC power convertors, Control systems, cut-off frequency, Cutoff frequency, Damping, DC-DC power convertors, DC/DC boost converter output stage, electric current control, Filters, Inductors, inner-loop buck+boost inductor current controller, input current continuous sinusoidal time behavior, input current ripple, input filter resonance active damping, losses, multi-loop system control, outer output voltage controller, power factor correction, Reactive power, Rectifiers, rectifying circuits, Resonance, switching circuits, Switching loss, switching losses, switching state sequence, three-phase unity power factor rectifier, three-switch buck-derived front-end, Voltage control, wide input voltage range
AbstractA new three-phase unity power factor rectifier with a three-switch buck-derived input stage and a DC/DC boost converter output stage is presented. This system has a wide input voltage range and a continuous sinusoidal time behavior of the input currents lying in phase with the input voltages which is also guaranteed in case of a failure in one phase of the mains. The input currents are controlled using a switching state sequence showing minimum switching losses. A multi-loop system control is realized by an outer output voltage controller and an inner-loop buck+boost inductor current controller. Furthermore active damping of the input filter resonance is provided. For increasing the output power of the system a parallel connection of two interleaved units is proposed. There, a low input current ripple is achieved, and the cut-off frequency of the input filter can be shifted to higher frequencies (resulting in improved control dynamics and a more compact design downsizing of the inductors and of the input filter)
DOI10.1109/INTLEC.2000.884290