Class D voltage-switching inverter with tapped resonant inductor

Author

Kazimierczuk, M.K. ; Nandakumar, T.

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

Volume

140

Issue

3

fYear

1993

fDate

5/1/1993 12:00:00 AM

Firstpage

177

Lastpage

185

Abstract

A steady-state analysis and experimental verification are given for a Class D voltage-switching inverter whose resonant circuit consists of a resonant capacitor in series with a tapped inductor. The analysis of the inverter is carried out in the frequency domain using Fourier series techniques. Design equations describing the steady-state operation are derived. It is found that the DC-to-AC voltage transfer function of the inverter is almost independent of the load variations at a switching frequency higher than the resonant frequency. In addition, the circuit has high efficiency over a wide range of load resistance. A prototype of the inverter was built and tested at an output power of 64 W using IRF730 power MOSFETs. The theoretical and experimental results show excellent agreement

Keywords

circuit resonance; frequency-domain analysis; inductors; invertors; switching circuits; transfer functions; 64 W; CLL inverter; Class D voltage-switching inverter; DC-to-AC voltage transfer function; Fourier series; IRF730 power MOSFETs; frequency domain; load resistance; output power; resonant capacitor; steady-state analysis; tapped resonant inductor;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings B

Publisher

iet

ISSN

0143-7038

Type

jour

Filename

212393