摘要
针对传统的动态电压恢复器前馈控制方法存在稳态误差、对电网中的扰动不敏感等问题,提出了一种基于无模型自适应控制策略的动态电压恢复器系统的设计方案。该方案不需要建立动态电压恢复器系统的数学模型,仅根据受控系统的负载瞬时电压和输入电压来提取系统中的有效信息,经无模型自适应控制器处理后去控制逆变器产生补偿电压,该电压经LC滤波器滤除谐波后叠加到电网中,从而可保证负荷侧电压的稳定性。仿真结果验证了该方案的正确性和可行性。
In view of problems that traditional feed forward control method of DVR has steady-state error and is insensitive to disturbance of power grid,the paper proposed a design scheme of DVR system based on model-free adaptive control strategy.The scheme needs not build mathematic model of DVR system,it only accords to instantaneous voltage of load and input voltage of controlled system to extract effective data which are processed by model-free adaptive controller,then the processed data controls inverter to produce compensation voltage which is superimposed in power grid after harmonic wave is filtered by LC filter, so as to ensure reliability of voltage of load side.The simulation result proved correctness and feasibility of the scheme.
出处
《工矿自动化》
2010年第12期33-36,共4页
Journal Of Mine Automation
作者简介
作者简介：陈翡（1978-），女，湖北武汉人，工程师，硕士，主要从事电力系统及其相关工作。E-mail：chenfei@gs．gscc．com．cn
