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Active disturbance rejection control based distributed secondary control for a low-voltage DC microgrid
Sustainable Energy Grids & Networks ( IF 5.4 ) Pub Date : 2021-07-28 , DOI: 10.1016/j.segan.2021.100515
Shuo Liu 1 , Honghao You 1 , Jianlin Li 1 , Shanjin Kai 1 , Liyong Yang 2
Affiliation  

The droop control method is widely used in DC microgrid due to its easy realization. However, the voltage deviation and current sharing accuracy caused by droop control cannot be ignored. In order to overcome the drawbacks of the droop control method, this paper proposes a new distributed secondary control scheme based on linear active disturbance rejection control (LADRC). In the distributed secondary control scheme, the voltage deviation is compensated by the voltage controller based on LADRC, and the current controller based on LADRC eliminates the output impedance deviation between different converters, thereby improving current sharing accuracy. This paper analyzes the performance of the proposed control scheme in the frequency domain. Finally, the effectiveness of the proposed method is verified. Moreover, simulation and experimental results show that the proposed control strategy has good dynamic performance.



中文翻译:

基于自抗扰控制的低压直流微电网分布式二次控制

下垂控制方法由于其易于实现而被广泛应用于直流微电网中。但是,下垂控制引起的电压偏差和均流精度不容忽视。为了克服下垂控制方法的缺点,本文提出了一种新的基于线性自抗扰控制(LADRC)的分布式二次控制方案。在分布式二次控制方案中,电压偏差由基于LADRC的电压控制器补偿,基于LADRC的电流控制器消除了不同转换器之间的输出阻抗偏差,从而提高了均流精度。本文分析了所提出的控制方案在频域中的性能。最后,验证了所提出方法的有效性。而且,

更新日期:2021-08-07
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