scholarly journals Optimization of Var-Voltage Regulation Control Strategy for Grid-Connected Inverter of Photovoltaic Power

2021 ◽  
Vol 691 (1) ◽  
pp. 012007
Author(s):  
Cuo Mu ◽  
Mei Yan ◽  
Tao Quanlin ◽  
Zhu Ling ◽  
Lin Wenli ◽  
...  
Keyword(s):  
Control Strategy ◽  
Voltage Regulation ◽  
Photovoltaic Power ◽  
Grid Connected Inverter

A Method of Harmonic Current Suppression in Photovoltaic Grid-Connected Systems

2013 ◽  
Vol 303-306 ◽  
pp. 1145-1148
Author(s):  
Jia Guo ◽  
Zhi Gang Li ◽  
Ya Ping Cheng ◽  
Kai Huang ◽  
Chun Yan Cui
Keyword(s):  
Control Strategy ◽  
Current Waveform ◽  
Output Current ◽  
Harmonic Current ◽  
Current Harmonics ◽  
Waveform Control ◽  
Photovoltaic Power ◽  
Grid Connected Inverter ◽  
The Stability ◽  
Power Generation Systems

The grid-connected inverter plays an important role in the photovoltaic power generation systems, the output of the grid current harmonics affect the stability of the grid. The reason of grid inverter output current distortion, a detailed analysis of current waveform control strategy and its effectiveness of the grid-connected inverter harmonic current suppression is introduced based on the d-q coordinates in this paper.

scholarly journals Using Energy Storage Inverters of Prosumer Installations for Voltage Control in Low-Voltage Distribution Networks

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1121
Author(s):  
Rozmysław Mieński ◽  
Przemysław Urbanek ◽  
Irena Wasiak
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Reactive Power ◽  
Low Voltage ◽  
Storage System ◽  
Distribution Networks ◽  
Energy Storage System ◽  
Voltage Regulation ◽  
Active Power ◽  
Total Power

The paper includes the analysis of the operation of low-voltage prosumer installation consisting of receivers and electricity sources and equipped with a 3-phase energy storage system. The aim of the storage application is the management of active power within the installation to decrease the total power exchanged with the supplying network and thus reduce energy costs borne by the prosumer. A solution for the effective implementation of the storage system is presented. Apart from the active power management performed according to the prosumer’s needs, the storage inverter provides the ancillary service of voltage regulation in the network according to the requirements of the network operator. A control strategy involving algorithms for voltage regulation without prejudice to the prosumer’s interest is described in the paper. Reactive power is used first as a control signal and if the required voltage effect cannot be reached, then the active power in the controlled phase is additionally changed and the Energy Storage System (ESS) loading is redistributed in phases in such a way that the total active power set by the prosumer program remains unchanged. The efficiency of the control strategy was tested by means of a simulation model in the PSCAD/EMTDC program. The results of the simulations are presented.

scholarly journals Control Strategy for a Grid-Connected Inverter under Unbalanced Network Conditions—A Disturbance Observer-Based Decoupled Current Approach

Energies ◽  
2017 ◽  
Vol 10 (7) ◽  
pp. 1067 ◽  
Author(s):  
Emre Ozsoy ◽  
Sanjeevikumar Padmanaban ◽  
Lucian Mihet-Popa ◽  
Viliam Fedák ◽  
Fiaz Ahmad ◽  
...  
Keyword(s):  
Control Strategy ◽  
Disturbance Observer ◽  
Current Approach ◽  
Grid Connected Inverter ◽  
Unbalanced Network

Performance Improvement of SVPWM-Based Three-Phase Grid-Connected Inverters

2013 ◽  
Vol 732-733 ◽  
pp. 1261-1264
Author(s):  
Zhi Lei Yao ◽  
Lan Xiao ◽  
Jing Xu
Keyword(s):  
Dynamic Response ◽  
Control Strategy ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Grid Current ◽  
Current Controller ◽  
Three Phase ◽  
Reference Grid ◽  
Grid Connected Inverter

An improved control strategy for three-phase grid-connected inverters with space vector pulse width modulation (SVPWM) is proposed. When the grid current contains harmonics, the d-and q-axes grid currents is interacted in the traditional control method, and the waveform quality of the grid current is poor. As the reference output voltage cannot directly reflect the change of the reference grid current with the traditional control strategy, the dynamic response of the grid-connected inverter is slow. In order to solve the aforementioned problems, the d-and q-axes grid currents in the decoupled components of the grid current controller are substituted by the d-and q-axes reference grid currents, respectively. The operating principles of the traditional and proposed control methods are illustrated. Experimental results show that the grid-connected inverter with the improved control strategy has high waveform quality of the grid current and fast dynamic response.

A Decentralized Adaptive Voltage Regulation Control Strategy Based on A Novel Modular Three-Phase Integrated PV Inverter

2021 ◽  
Author(s):  
Xinghua Dang ◽  
Shangzhi Pan ◽  
Xicai Pan ◽  
Jinwu Gong ◽  
Xiaolu Ge ◽  
...  
Keyword(s):  
Control Strategy ◽  
Voltage Regulation ◽  
Pv Inverter ◽  
Three Phase
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