摘要
针对传统感应加热电源存在的频率跟踪精度低、网侧谐波污染严重、开关损耗大及抗扰性能不足等问题,研究提出一种多维度优化方案。首先,整流电路采用三相电压源型整流器结合改进的双闭环控制策略,提高系统抗扰性能的同时降低了网侧谐波污染的总含量。其次,在Buck功率调节电路中采用无源软开关技术,实现零电流导通和零电压关断,使得开关损耗极大降低。最后,为增强输出功率的稳定性,采用自抗扰控制器替代传统PI控制。设计基于DSP的数字锁相环提升频率跟踪可靠度,采用静电耦合方法实现负载匹配替代传统高频变压器,降低电源制作成本。通过Matlab/Simulink建立整机仿真模型验证表明,改进后的电源系统在动态响应速度和抗扰能力方面均显著优于传统方案。
To address the issues of low frequency tracking accuracy,severe grid-side harmonic pollution,high switching losses,and insufficient disturbance rejection in conventional induction heating power supplies,this study proposes a multi-dimensional optimization solution.The rectifier stage employs a three-phase voltage source rectifier with an improved dual closed-loop control strategy,enhancing system disturbance rejection while reducing total grid-side harmonic pollution;the Buck power regulation circuit utilizes a passive soft-switching technique to achieve zero-current switching turn-on and zero-voltage switching turn-off,significantly lowering switching losses;an active disturbance rejection controller replaces the traditional PI controller to enhance output power stability;a digital phase-locked loop based on DSP improves frequency tracking reliability;and an electrostatic coupling method achieves load matching,replacing the traditional high-frequency transformer to reduce manufacturing costs.Simulation results from a complete system model built in Matlab/Simulink demonstrate that the optimized power supply system significantly outperforms traditional solutions in both dynamic response speed and disturbance rejection capability.
作者
殷俊杰
王宾
Yin Junjie;Wang Bin(School of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan,Anhui 232001,China)
出处
《黑龙江工业学院学报(综合版)》
2025年第10期137-144,共8页
Journal of Heilongjiang University of Technology(Comprehensive Edition)
基金
国家自然科学基金项目(项目编号:52174141)。
关键词
电压源型PWM整流器
数字锁相环
无源软开关技术
自抗扰控制
负载匹配
voltage source PWM rectifier
digital phase-locked loop
passive soft-switching technology
active disturbance rejection control
load matching
