不連続電流モ-ドで動作する三相昇降圧整流器

概要

論文の詳細を見る
To reduce the supply current distortions and low power factor operations with a conventional diode bridge rectifier connected to the utility system, a novel three-phase single-way rectifier is presented in the paper. The circuit configuration is based on the buck-boost DC-DC converter, in which AC flyback inductors play a role of the energy storage/transfer. If the simple pulsewidth modulation with uniform duty factor is introduced and if the rectifier operates in discontinuous current conduction mode, the supply currents can be sinusoidally waveshaped with a near unity power factor. Moreover, the step-up/step-down characteristics of the output voltage can easily be obtained by appropriately adjusting the duty factor of the switches. The experimental setup, employing insulated-gate bipolar transistors as the power switching devices, is implemented and the state-space method is introduced to predict the voltage and current waveforms and steady-state characteristics. The experimental and simulated results confirm the relevance of the presented circuit configuration as an useful rectifier with sinusoidal supply currents and step-up/down output voltage regulation.
社団法人電気学会の論文
1995-04-20