机器人WPT系统初级直流变换器设计  

Design of Primary-side DC/DC Converter for Robot WPT System

作　　者：张大青 程志远 袁鑫 徐晓杰 ZHANG Da-qing;CHENG Zhi-yuan;YUAN Xin;XU Xiao-jie(Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学,电气工程学院,上海200090

出　　处：《电力电子技术》2025年第1期95-97,107,共4页Power Electronics

基　　金：国家自然科学基金(51877129)。

摘　　要：为实现高功率密度型机器人无线电能传输(WPT)系统,最为有效的方式为初级直流变换器的小型化设计,这使得该变换器具有开关频率高、动态响应速度快等特点,从而导致系统控制延迟会对变换器的稳定性造成较大影响。为此,本文以双管正激变换器为研究对象,首先根据小信号建模法建立控制延迟模型,其次分析其对系统稳定性的影响,并采用多重采样法降低控制延迟。最后通过仿真与实验验证理论分析的正确性及多重采样法的有效性,为机器人WPT系统初级直流变换器稳定性设计提供一定的方法指导。To achieve a high power density robot wireless power transfer(WPT)system,the most effective approach is to design a compact primary-side DC/DC converter.This design enables the converter to have characteristics such as high switching frequency and fast dynamic response,which in turn can be affected by the system’s control delay and impact its stability.The focus is on the two-transistor forward converter.Firstly,a control delay model is established us-ing small-signal modeling.Secondly,the influence of control delay on system stability is analyzed,and a multiple sampling method is employed to reduce the control delay.Finally,the correctness of the theoretical analysis and the effectiveness of the multiple sampling method are validated through simulations and experiments,providing guidance for the stability design of the primary-side DC/DC converter in robot WPT systems.

关 键 词：无线电能传输 双管正激变换器 小信号建模 

分 类 号：TM724[电气工程—电力系统及自动化]