Fig. 1. Proposed novel soft switching PWM-PFC AC-DCboost converter
Fig. 2. Equivalent circuit schemes for operating stages
Fig. 3. Key waveforms concerning the operation stages inthe proposed converter
Fig. 4. Experimental results of current and voltagewaveforms of (a) S1, (b) DF, (c) S2 (200 V/div, 10A/div, 2 μs/div), and (d) voltage and currentwaveform of the line (100 V/div, 2 A/div, 5 ms/div)
Fig. 5. Power factor depend on varying line voltage
Fig. 6. The efficiency curves of the proposed convertercomparatively
Table 1. The experimental parameters and the device values of proposed converter
Table 2. Some significant values of the semiconductor elements used in the prototype converter
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