Decay of turbulence behind a double grid of cylinders with opposite motion of the grids

1979 ◽  
Vol 14 (3) ◽  
pp. 338-344 ◽  
Author(s):  
A. S. Ginevskii ◽  
A. V. Kolesnikov ◽  
L. N. Ukhanova
Keyword(s):  
Double Grid ◽  
Opposite Motion

Double grid corona discharge TEA CO2 laser

1993 ◽  
Author(s):  
A. R. Bahram-pour ◽  
M. A. Bolorizadeh ◽  
Mr. Ilaghi ◽  
Sid M. Hashemi ◽  
J. Jazebi ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Co2 Laser ◽  
Tea Co2 Laser ◽  
Double Grid

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.

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