电力系统保护与控制2024，Vol.52Issue(19)：108-118,11.DOI:10.19783/j.cnki.pspc.231510
非接触功率传输系统超低压软启动方法建模研究
Modeling an ultra low voltage soft start method for a contactless power transmission system
摘要
Abstract
In the process of directly starting a contactless transmission system,the peak power and current of the power input can reach several to hundreds of times the steady-state value.The converter switching tube is prone to a single hard switching phenomenon,leading to aging or even breakdown of the switching tube.In response to this problem,a three-phase LCC contactless power transmission system is taken as the research object.The homogeneous solution and inhomogeneous equation special solution,and complete solution of its equivalent circuit corresponding to the differential equation are derived.Given that the homogeneous solution is not directly related to the power source excitation and determines the transient characteristics,an ultra-low voltage soft start method is proposed.Analysis shows that:the theoretical basis of the soft start method is that the zero input response and zero state response of the differential equation have decomposable characteristics;mathematical modeling and simulation are used to verify that soft start can reduce the peak zero input response of the system;the circuit simulation verifies that soft start can effectively avoid the phenomenon of a single hard switch in the switching tube;if the power supply is cut off for a short time during the operation of the circuit and the driving circuit continues to work because of internal energy storage,a soft start method should be used to restart to avoid the impact caused by direct starting;an approximate calculation method for the initial rate of change is proposed,and the conclusion is that the initial value is related to power excitation.The experiment has proved the correctness of the above conclusion.关键词
非接触功率传输/数学模型/软启动Key words
contactless power transmission/mathematical model/soft start引用本文复制引用
周成虎,唐征宇,黄全振,张洋,张劳模..非接触功率传输系统超低压软启动方法建模研究[J].电力系统保护与控制,2024,52(19):108-118,11.基金项目
This work is supported by the General Program of National Natural Science Foundation of China(No.62173126). 国家自然科学基金面上项目资助(62173126) （No.62173126）
中原科技创新领军人才支持计划(234200510027) （234200510027）
河南省科技攻关计划项目资助(242102240099) （242102240099）
