Digital phase control for resonant inverters

Author

Yin, Yan ; Zane, Regan

Author_Institution

Colorado Power Electron. Center, Univ. of Colorado, Boulder, CO, USA

Volume

2

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

51

Lastpage

53

Abstract

This letter presents an approach for direct digital phase control of resonant inverters that is based on inductor current or voltage sensing. Compared to frequency control, phase control provides the advantages of self-tuning to the tank resonant frequency, reduced sensitivity for improved control near resonance, and inherent protection against operation below resonance to avoid hard switching. The digital control algorithm suitable for implementation using standard CMOS logic is derived. The design details of an experimental test platform based on a Xilinx field programmable gate array (FPGA) and experimental results for a typical resonant inverter are provided.

Keywords

CMOS logic circuits; direct digital control; field programmable gate arrays; inductors; phase control; resonant invertors; self-adjusting systems; CMOS logic; FPGA; digital IC implementation; digital control algorithm; digital phase control; field programmable gate array; frequency control; inductor current; resonant inverters; self-tuning; sensitivity reduction; tank resonant frequency; voltage sensing; CMOS logic circuits; Digital control; Field programmable gate arrays; Frequency control; Inductors; Phase control; Protection; Resonance; Resonant frequency; Resonant inverters; Digital IC implementation; FPGA; digital phase control; field programmable gate array; resonant inverters;

fLanguage

English

Journal_Title

Power Electronics Letters, IEEE

Publisher

ieee

ISSN

1540-7985

Type

jour

DOI

10.1109/LPEL.2004.832032

Filename

1324655