Study of control for induction heating power supply with LLC resonant load based on DSP

Author

Tu, Zhangyin ; Zhou, Yueqing ; Zhang, Nianfu

Author_Institution

Sch. of Electr. Eng. & Autom., Tianjin Univ., Tianjin, China

fYear

2012

fDate

21-23 April 2012

Firstpage

1313

Lastpage

1316

Abstract

In order to improve the efficiency of power supply, the method of electrostatic coupling is applied to design LLC resonant load for implementing load matching^[1]. In this paper, the characteristics of LLC resonant load and the selection of control variables for induction heating power supply are analyzed. In addition, a method for implementing the Digital Phase Locked Loop (DPLL) applied to induction-heating power supply and phase-shifted PWM are put forward in the paper. The process of implementing this method using DSP is presented also. The phase-shifted PWM is realized for the system. And the system promoted the digital control level of the induction heating.

Keywords

PWM power convertors; digital control; digital phase locked loops; digital signal processing chips; induction heating; power supplies to apparatus; power system control; resonant power convertors; DPLL; DSP; LLC resonant load; control variables; digital control level; digital phase locked loop; electrostatic coupling; induction heating power supply; load matching; phase shifted PWM; Digital signal processing; Electromagnetic heating; Power supplies; Pulse width modulation; Radiation detectors; Registers; Resonant frequency; DPLL; DSP; LLC resonant load; induction heating;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on

Conference_Location

Yichang

Print_ISBN

978-1-4577-1414-6

Type

conf

DOI

10.1109/CECNet.2012.6202075

Filename

6202075