Integration of hybrid wind-solar power conversion system and dynamic voltage restorer for voltage regulation and energy conservation

2013 ◽  
Vol 10 (4) ◽  
Author(s):  
M Ramasamy ◽  
S Thangavel
Keyword(s):  
Energy Conservation ◽  
Solar Power ◽  
Power Conversion ◽  
Voltage Regulation ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Conversion System ◽  
Dynamic Voltage

The Repetitive Control for Dynamic Voltage Restorer

2012 ◽  
Vol 546-547 ◽  
pp. 833-839 ◽  
Author(s):  
Zhe Li ◽  
Zheng Guo Wu ◽  
Li Xia ◽  
Wei Ping Zhou
Keyword(s):  
Repetitive Control ◽  
Voltage Regulation ◽  
Dynamic Voltage Restorer ◽  
Integral Control ◽  
Control Approach ◽  
Proportional Integral ◽  
Voltage Restorer ◽  
Control Scheme ◽  
Dynamic Voltage ◽  
Proportional Integral Control

A novel control scheme for the dynamic voltage restorer (DVR) is proposed to achieve fast response and effective sag and swell compensation capabilities. In this control scheme, the proportional integral control is used to guarantee system dynamic performance and the repetitive control is used to improve voltage waveform quality. Compared to classical proportional integral control, DVR based on this control scheme can restore load voltage almost sinusoidal and shows better transient and steady-state responses when facing sag or swell conditions. The proposed control scheme has been verified by simulation on Matlab. Simulation results show that the control approach performs very effectively and yields excellent voltage regulation.

scholarly journals Five Level Flying-Capacitor Multilevel Converter Using Dynamic Voltage Restorer (DVR)

2012 ◽  
pp. 166-172
Author(s):  
K. Ramakrishna Reddy ◽  
G. Koti Reddy
Keyword(s):  
Distribution System ◽  
Voltage Regulation ◽  
Matlab Simulation ◽  
Multilevel Converter ◽  
Multilevel Converters ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Flying Capacitors ◽  
Dynamic Voltage ◽  
Level Converter

This paper deals with dynamic voltage restorer (DVR) controlled by a five-level flying-capacitor multi level converter. To decrease the power-quality disturbances in distribution system, such as voltage imbalances, harmonic voltages, and voltage sags. The organisation of this paper has been divided into three parts; the first one eliminates the modulation high-frequency harmonics using filter increase the transient response. The second one deal with the load voltage; and the third is flying capacitors charged with balanced voltages. The MATLAB simulation results effectively for five level flying capacitor multilevel converters charged with balanced voltage regulation.

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