Abstract
A new resonant rectifier is introduced in this paper. Due to the suitability of operation in the lagging power factor mode, the series parallel CLL topology is utilized. The converter has been analyzed and simulation results have been obtained by using MATLAB. Control requirements have been identified and two new control schemes have been developed. The first scheme does not require any current sensor to improve the current drawn from the supply. The technique is to use a PI controller to maintain the output voltage constant, with an additional gain proportional to the rectified AC input voltage to create a fixed frequency modulation to improve the input current waveform. The second scheme uses a current sensor and forces both the output voltage and the input current to follow the corresponding desired references using two PI controllers. A laboratory prototype has been fabricated to realize the proposed converter topology along with the control schemes and satisfactory results have been found.
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