Simulation Research on Induction Heating Technology of High Power Electromagnetic Thermal Energy Storage System

doi:10.11985/2015.09.002

Abstract

Abstract:

24kHz/100kW electromagnetic thermal energy storage system is took as the research object in the paper. The system turn the clean electrical energy from the new energy power generation system into heat by electromagnetic induction heating, and the heat will be used or stored. Firstly, Ansoft-Maxwell is used to get the magnetic induction intensity of the electromagnetic induction heating model in eddy current field. Then Ansys/Fluent is used to analysis the fluid temperature field of the electromagnetic induction heating model. The power supply design of induction heating system plays a vital role in the electromagnetic thermal energy storage system. Matlab/Simulink is used to model and simulate the series resonance circuit of electromagnetic induction heating power source, the circuit characteristic curve of the resonance condition is got. The simulation shows the PLL phase-locked loop signal, the PWM full bridge inverter trigger signal. The research provides a theoretical basis for the induction heating power supply of electromagnetic thermal energy storage system.

Key words: Electromagnetic thermal energy storage, eddy current field, electromagnetic induction heating, fluid temperature field, series resonance circuit

CLC Number:

TM315

Jiao Yonggang,Zhang Fengge,Yin Xiaoju. Simulation Research on Induction Heating Technology of High Power Electromagnetic Thermal Energy Storage System[J]. Journal of Electrical Engineering, 2015, 10(9): 8-14.

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参数	数值
Q235电阻率/Ω·m	14×10^-8
Q235相对磁导率	250
Q235导热系数/[W/(m·k)]	43
线圈电流有效值I₁/A	200
线圈截面积/mm²	50
线圈匝数N	100
功率因数cos φ₁	0.945
电源频率f /Hz	24 000
金属管长度/mm	1 000
金属管外径/mm	108
金属管壁厚a/mm	2
涡流透入深度Δ/mm	0.078

参数	数值
参考压力/Pa	101 325
参考重力/(N/s²)	9.81
入水口速度v/(m/s)	0.05
外表面散热系数/( W/m²)	5
体热功率密度P/( W/m³)	1.39×10⁸

参数	数值
三相电源电压有效值/V	220
三相电源频率/Hz	50
直流滤波电感L_d/mH	5
直流滤波电容C_d/μF	5 000
串联谐振电路等效电阻R/Ω	2.4
谐振电感L/mH	0.014 7
谐振电容C/μF	17
锁相环初始频率/Hz	24 000
锁相环参数K_p	0.6
锁相环参数K_i	10