PROJECT TITLE :
Direct AC/DC Rectifier With Mitigated Low-Frequency Ripple Through Inductor-Current Waveform Control
In a rectification system with unity power factor, the input power consists of a dc and a double-line frequency power part. Traditionally, an electrolytic capacitor (E-Cap) is used to buffer the double-line frequency power such that the dc output presents a little voltage ripple. The utilization of E-Cap significantly limits the lifetime of the rectifier system. During this paper, a differential ac/dc rectifier primarily based on the employment of an inductor-current waveform control methodology is proposed such that a single-stage direct ac/dc rectification while not the need of an E-Cap for buffering the double-line frequency power, and a front-stage diode rectifier circuit can be achieved. The feasibility of the proposal has been practically confirmed in an experimental prototype.
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