Characteristics of new single phase voltage doubler rectifier circuit using the partial switching strategy

In this paper, the new partial switching single phase voltage doubler rectifier circuit which can improve efficiency drastically is proposed. The partial switching circuit is circuit to realize boost and harmonic reduction, high efficiency in a good balance. The proposed circuit is different from conventional circuit^[1] in the point that component of the partial switching is connected to DC side. Because current flowed through the different diode in partial switching and commutation in conventional circuit, the efficiency dropped. Because current flows through the same diode with both situations in proposed circuit, the efficiency is improved. With disposition to the DC side of the component of the partial switching, the diode which prevented the short circuit of the capacitor was necessary. But, the drop of the efficiency was suppressed at the minimum by operating two MOS-FET as synchronous rectification. The operating characteristic was inspected in experiment, and it was evaluated boost, harmonic current and efficiency. While equal performance about boost and harmonic current is maintained, 2-3% of efficiency was improved in comparison with conventional circuit^[1]. In this paper, circuit configuration and a principle of operation, experimental results are reported.