The Design of Digital Medium Frequency Induction Heating Power Supply Based on DSP and FPGA

Abstract:

DSP (XC2267) is the main control chip which does the increment PI algorithms and realizes the voltage and current double closed-loop. Three-phase thyristor rectifier method based on the phase self-adjusting of FPGA is proposed. A method for swept-frequency start circuit is designed to implement the transition between the high-power and low-power. The invert system uses the compound control of improved PWM and frequency phase lock to improve the control accuracy and efficiency. Lastly, by using bench, the circuit is tested and the feasibility and effectiveness of the whole system are verified.

• Periodical: Applied Mechanics and Materials (Volumes 568-570)
• Pages: 1839-1842
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.568-570.1839
• Online since: June 2014
• Authors: Meng Juan Sun*, Jian Guo Song, Zhi Qi Huang
• Keywords: DSP, FPGA, Frequence Tracking, Induction Heating Power System, PID, PLL

References

[1] Su Yanping, Cui Jianfeng: Design of digital phase shift trigger of induction heating power system. (International Conference on Electronic, 2011).

DOI: 10.1109/emeit.2011.6023784

[2] Li Heming, Li Yabin: FPGA-Based All Digital Phase-Locked Loop Controlled Induction Heating Power Supply Operating at Optimized ZVS Mode. IEEE 1-4244-0549-1/06（ 2006）.

DOI: 10.1109/tencon.2006.344089

[3] Piao Xingzhe: The Research on 10kHz/150kW Mid-Frequency Heating Power Induction Heater. Shenyang University of Technology（2004）.

[4] Yang Xiaojing: The Key Technology Research of the Digital Intermediate Frequency Induction Heating PowerSupply . Xi'an University of Architecture and Technology(2012).

[5] D.H. Wolaver: Phase-Locked Loop Circuit Design. Prentice Hall. Englewwood Cliffs. NJ(1991).