Advanced three-phase ZVS-PWM active power rectifier with new resonant DC link and its digital control scheme

1994 ◽  
Author(s):  
H. Yonemori
Keyword(s):  
Digital Control ◽  
Active Power ◽  
Three Phase ◽  
Control Scheme ◽  
Power Rectifier

An Adaptive Digital-Control Scheme for Improved Active Power Filtering Under Distorted Grid Conditions

2018 ◽  
Vol 65 (2) ◽  
pp. 988-999 ◽  
Author(s):  
Diarmaid John Hogan ◽  
Francisco J. Gonzalez-Espin ◽  
John G. Hayes ◽  
Gordon Lightbody ◽  
Raymond Foley
Keyword(s):  
Digital Control ◽  
Active Power ◽  
Distorted Grid ◽  
Control Scheme

scholarly journals Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1247
Author(s):  
Saeid Abbasi ◽  
Ali Asghar Ghadimi ◽  
Amir Hossein Abolmasoumi ◽  
Mohammad Reza Miveh ◽  
Francisco Jurado
Keyword(s):  
Reactive Power ◽  
Control Strategies ◽  
Active Power ◽  
Reactive Control ◽  
Pv System ◽  
Pv Inverter ◽  
Three Phase ◽  
Control Scheme ◽  
Double Grid ◽  
Unbalanced Grid

This paper presents an improved control strategy to cancel the double grid frequency oscillations in the active power, reactive power, and DC-link voltage of a three-phase grid-connected photovoltaic (PV) system under unbalanced grid condition. To achieve these goals, an enhanced positive–negative-sequence control (PNSC) to remove oscillations of active power and an instantaneous active–reactive control (IARC) to mitigate the fluctuations of active and reactive power, simultaneously, are suggested. These methods are also effective to reduce the oscillations of the DC-link voltage. To track the desired unbalanced or harmonic reference currents, improved proportional resonant (PR) current controllers have been designed using the Bode frequency analysis. Simulation studies are carried out via Matlab/Simulink® software to verify the effectiveness of the suggested control strategies.

scholarly journals Hysteresis Control for Shunt Active Power Filter under Unbalanced Three-Phase Load Conditions

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Z. Chelli ◽  
R. Toufouti ◽  
A. Omeiri ◽  
S. Saad
Keyword(s):  
Reactive Power ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Harmonic Suppression ◽  
Nonlinear Loads ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Three Phase ◽  
Control Scheme

This paper focuses on a four-wire shunt active power filter (APF) control scheme proposed to improve the performance of the APF. This filter is used to compensate harmonic distortion in three-phase four-wire systems. Several harmonic suppression techniques have been widely proposed and applied to minimize harmonic effects. The proposed control scheme can compensate harmonics and reactive power of the nonlinear loads simultaneously. This approach is compared to the conventional shunt APF reference compensation strategy. The developed algorithm is validated by simulation tests using MATLAB Simulink. The obtained results have demonstrated the effectiveness of the proposed scheme and confirmed the theoretical developments for balanced and unbalanced nonlinear loads.

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