A Transformer Class E Amplifier

• Autorzy: Mikolajewski M.

Identyfikatory

DOI

10.2478/aee-2014-0043

• Języki publikacji: EN

Abstrakty

EN

In a high-efficiency Class E ZVS resonant amplifier a matching and isolation transformer can replace some or even all inductive components of the amplifier thus simplifying the circuit and reducing its cost. In the paper a theoretical analysis, a design example and its experimental verification for a transformer Class E amplifier are presented. In the experimental amplifier with a transformer as the only inductive component in the circuit high efficiency ηMAX = 0.95 was achieved for supply voltage VI = 36 V, maximum output power POMAX = 100 W and the switching frequency f = 300 kHz. Measured parameters and waveforms showed a good agreement with theoretical predictions. Moreover, the relative bandwidth of the switching frequency was only 19% to obtain output power control from 4.8 W to POMAX with efficiency not less than 0.9 in the regulation range.

Słowa kluczowe

EN

class E amplifier; resonant inverter; DC-DC converter; transformer; leakage inductance

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2014
• Tom: Vol. 63, nr 4
• Strony: 621--633
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr., wz.

Twórcy

autor

Mikolajewski M.

• Institute of Radioelectronics Faculty of Electronics and Information Technology Warsaw University of Technology ul. Nowowiejska 15/19. 00-665 Warsaw

Bibliografia

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