Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System
The energy storage inverter system has the characteristics of nonlinearity, strong coupling, variable parameters, and flexible mode switching between parallel and off grid. In order to improve the control performance of the grid-side inverter of the energy storage system, an improved Linear Active D...
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doaj-95b49efaa34646c49ebf229eeece839c2020-11-25T01:15:20ZengMDPI AGEnergies1996-10732020-03-01135120710.3390/en13051207en13051207Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage SystemYoujie Ma0Luyong Yang1Xuesong Zhou2Xia Yang3Yongliang Zhou4Bo Zhang5Tianjin Key Laboratory for Control Theory and Application in Complicated Systems, Tianjin University of Technology, Tianjin 300384, ChinaSchool of Electrical and Electronic Engineering, Tianjin University of Technology, No. 391 Binshui West Road, Xiqing District, Tianjin 300384, ChinaTianjin Key Laboratory for Control Theory and Application in Complicated Systems, Tianjin University of Technology, Tianjin 300384, ChinaSchool of Electrical and Electronic Engineering, Tianjin University of Technology, No. 391 Binshui West Road, Xiqing District, Tianjin 300384, ChinaSchool of Electrical and Electronic Engineering, Tianjin University of Technology, No. 391 Binshui West Road, Xiqing District, Tianjin 300384, ChinaSchool of Electrical and Electronic Engineering, Tianjin University of Technology, No. 391 Binshui West Road, Xiqing District, Tianjin 300384, ChinaThe energy storage inverter system has the characteristics of nonlinearity, strong coupling, variable parameters, and flexible mode switching between parallel and off grid. In order to improve the control performance of the grid-side inverter of the energy storage system, an improved Linear Active Disturbance Rejection Control (LADRC) based on proportional differentiation is proposed to replace the traditional LADRC in the voltage outer loop control. In this paper, the observation gain coefficient of the sum of the disturbances of the traditional Linear Extended State Observer (LESO) is improved to a proportional differentiation link, which effectively reduces the degree of the disturbance observation amplitude drop and the phase lag, and increases the observation bandwidth of LESO. Compared with traditional LADRC, it not only improves the observation accuracy of LESO for disturbance, but also improves the anti-interference performance of LADRC. Finally, the control effects of improved LADRC and traditional LADRC on low-voltage ride-through at different degrees are analyzed and compared through simulation, which proves the rationality of the controller designed in this paper.https://www.mdpi.com/1996-1073/13/5/1207energy storage grid-connected inverterlinear active disturbance rejection controllinear extended state observerproportional differentialobservation accuracy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Youjie Ma Luyong Yang Xuesong Zhou Xia Yang Yongliang Zhou Bo Zhang |
spellingShingle |
Youjie Ma Luyong Yang Xuesong Zhou Xia Yang Yongliang Zhou Bo Zhang Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System Energies energy storage grid-connected inverter linear active disturbance rejection control linear extended state observer proportional differential observation accuracy |
author_facet |
Youjie Ma Luyong Yang Xuesong Zhou Xia Yang Yongliang Zhou Bo Zhang |
author_sort |
Youjie Ma |
title |
Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System |
title_short |
Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System |
title_full |
Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System |
title_fullStr |
Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System |
title_full_unstemmed |
Linear Active Disturbance Rejection Control for DC Bus Voltage Under Low-Voltage Ride-Through at the Grid-Side of Energy Storage System |
title_sort |
linear active disturbance rejection control for dc bus voltage under low-voltage ride-through at the grid-side of energy storage system |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2020-03-01 |
description |
The energy storage inverter system has the characteristics of nonlinearity, strong coupling, variable parameters, and flexible mode switching between parallel and off grid. In order to improve the control performance of the grid-side inverter of the energy storage system, an improved Linear Active Disturbance Rejection Control (LADRC) based on proportional differentiation is proposed to replace the traditional LADRC in the voltage outer loop control. In this paper, the observation gain coefficient of the sum of the disturbances of the traditional Linear Extended State Observer (LESO) is improved to a proportional differentiation link, which effectively reduces the degree of the disturbance observation amplitude drop and the phase lag, and increases the observation bandwidth of LESO. Compared with traditional LADRC, it not only improves the observation accuracy of LESO for disturbance, but also improves the anti-interference performance of LADRC. Finally, the control effects of improved LADRC and traditional LADRC on low-voltage ride-through at different degrees are analyzed and compared through simulation, which proves the rationality of the controller designed in this paper. |
topic |
energy storage grid-connected inverter linear active disturbance rejection control linear extended state observer proportional differential observation accuracy |
url |
https://www.mdpi.com/1996-1073/13/5/1207 |
work_keys_str_mv |
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