摘要
针对感应加热过程中谐振频率不断变化的问题,在分析传统锁相环频率跟踪的基础上,提出了一种锁相电路与定角控制相结合的逆变器频率跟踪方法。以M atlab/S imu link为仿真工具,对提出的定角控制方法进行了仿真验证,仿真表明该定角控制方法是可行的,能够快速跟踪负载频率变化,保持功率因数角恒定。
In order to solve the problem about the variety of resonance frequency,this paper introduces a new automatic tracking method of the converter＇s frequency using PLL and fixed angle control after analyzing the control principle of phase-locked loop of the converter.The simulation of fixed-angle-control is examined based on Matlab/Simulink.Simulation results indicate that this method is feasible.It can quickly track the load frequency and keep the power factor angle.
出处
《电力科学与工程》
2011年第2期13-17,共5页
Electric Power Science and Engineering
关键词
并联型逆变器
频率跟踪
定角控制
parallel resonant inverter
frequency tracking
fixed-angle-control
