【摘要】 提出了一种基于峰值因数(PF)的非线性电流指令生成方法,应用于电能回馈型负载电流模拟器(PEFLCS)对被试电源的考核,在此基础上,为解决传统的P(比例)控制无法同时满足系统稳定性和快速性要求的问题,引入P控制+重复控制的复合控制策略,实现对非线性指令的快速、无静差跟踪。对比分析了P控制+重复控制串、并联两种复合结构对非线性负载电流模拟的控制效果。搭建了一台2.2k V·A负载电流模拟器样机,仿真和实验结果验证串联复合控制能够快速、准确地跟踪指令电流,更好地实现了对非线性负载的模拟。更多还原

【Abstract】 This paper proposes a nonlinear current reference generation method based on peak factor(PF) to simulate various loads for AC power source burn-in test by power energy feedback load current simulator(PEFLCS). On this basis, for nonlinear load current reference riches harmonic, conventional P control could not guarantee zero steady state error in nonlinear load current reference tracking and have good dynamic characteristic of system in the same time, the compound controller contained P and repetitive controller is proposed. The difference effects to nonlinear load current between two different structures of the compound controller with P and repetitive controller in parallel connection and in series connection are compared. Simulation and experimental results on 2.2k V·A prototype testify that the compound controller in series connection in this paper can better track nonlinear load current reference and achieve the simulation of nonlinear load.更多还原