Title :
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
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;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4577-1414-6
DOI :
10.1109/CECNet.2012.6202075
