摘要
针对传统下垂控制策略中电压幅值和频率精度较低以及功率不能合理分配的问题,在传统下垂控制的基础之上提出了鲁棒下垂控制策略。基于鲁棒下垂控制的并网逆变器能够对电压、频率进行自动调节,提高系统的稳定性,保证无功功率的合理分配。在MATLAB/Simulink软件平台上搭建了两台逆变器并联运行的模型并进行验证。仿真结果表明:当线路阻抗不相同、逆变器容量不同时,逆变器输出有功/无功功率也能够实现合理的分配。
In order to solve the series of problems on traditional droop control strategy such as low accuracy of voltage amplitude and frequency,inability of reasonably distribution of power,this paper proposed a robust control strategy based on the traditional method.The robust-droop-controlled grid-connected inverter is able to automatically adjust voltage and frequency,so that it may improve the stability of system and ensure the reactive power distribute reasonably.The paper established two grid-connected inverter model via MATLAB/Simulink software platform.The results of which show that even under the different conditions of variable impedance and capacity,the inverter is able to implement the distribution of active/reactive power.
出处
《机械工程与自动化》
2018年第1期200-202,共3页
Mechanical Engineering & Automation
关键词
并网逆变器
鲁棒下垂控制
功率分配
parallel operation of inverters
robust droop control
power distribution
作者简介
郝美丽（1977-）,女,山西长治人,助理工程师,本科.
