The ZVS Class E/F3 Inverter Using Piezoelectric Transformers for Energy Extraction.

Ashique, Ratil H.; Arif, M. Saad Bin; Bhatti, Abdul Rauf; Al Mansur, Ahmed; Maruf, Md. Hasan; Shihavuddin, ASM

Enhanced class E inverters (EFn or E/Fn) reduce the high peak switch voltage that is prevalent in class E inverters. Additionally, their stability and load regulation capabilities are improved as compared to class E inverters. This paper proposes an enhanced class E inverter (E/F3) with a piezoelectric transformer (PT) replacing the auxiliary resonant networks. This class E/F3 inverter is designed by adding a tuned auxiliary LC network at the third harmonic of the switching frequency to the class E inverter. Both the primary and auxiliary resonant networks are realized using a piezoelectric transformer (PT). The converter is simulated in LTspice and an experimental prototype is built and tested. It is found that the experimental results concur with the simulation results, with a measured efficiency of 90%. Thus, the theoretical design is verified and the concept of energy extraction is achieved.

VOLTAGE; ELECTRIC inverters; PROTOTYPES

Electronics (2079-9292), 2023, Vol 12, Issue 9, p2118

2079-9292

Academic Journal

10.3390/electronics12092118