Abstract
In this paper, a detailed mathematical analysis process of the voltage-source parallel resonant (VSPR) class E/F3 inverter at 50% duty ratio is proposed. Combining the advantages of VSPR class E and F inverters, the performance of the proposed inverter can be improved greatly compared to the traditional. The transistor in the VSPR class E/F3 inverter is satisfied with zero-voltage switching(ZVS) and zero-voltage derivative switching(ZVDS) conditions. Moreover, two design freedoms can be obtained and the proposed analysis process is based on them, which can provide more flexible selections. Finally, a VSPR class E/F3 inverter is fabricated and the experiment is carried out. The measured normalized peak transistor voltage decreases by 25.6%. The output power reaches 5.06 W, and the efficiency reaches 93.75%. The measured results are well agreed with the theoretical and simulated.
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