A Lyapunov function based current controller to control active and reactive power flow in a three phase grid connected PV inverter under generalized grid voltage conditions

2011 ◽  
Author(s):  
S. Dasgupta ◽  
S. N. Mohan ◽  
S. K. Sahoo ◽  
S. K. Panda
Keyword(s):  
Lyapunov Function ◽  
Power Flow ◽  
Reactive Power ◽  
Grid Voltage ◽  
Pv Inverter ◽  
Active And Reactive Power ◽  
Current Controller ◽  
Reactive Power Flow ◽  
Three Phase

scholarly journals Grid-tie Three-phase Inverter With Active And Reactive Power Flow Control Capability

2014 ◽  
Vol 19 (4) ◽  
pp. 397-405
Author(s):  
Leonardo Poltronieri Sampaio ◽  
Moacyr Aureliano Gomes de Brito ◽  
Guilherme de Azevedo e Melo ◽  
Carlos Alberto Canesin
Keyword(s):  
Flow Control ◽  
Power Flow ◽  
Reactive Power ◽  
Power Flow Control ◽  
Phase Inverter ◽  
Active And Reactive Power ◽  
Reactive Power Flow ◽  
Three Phase ◽  
Control Capability ◽  
Three Phase Inverter

scholarly journals Real and Reactive Power Control by using 48-pulse Series Connected Three-level NPC Converter for UPFC

2011 ◽  
pp. 1-5
Author(s):  
A. Naveena ◽  
M.Venkateswara Rao
Keyword(s):  
Transmission Line ◽  
Power Flow ◽  
Reactive Power ◽  
System Stability ◽  
Unified Power Flow Controller ◽  
Control Mechanisms ◽  
Active And Reactive Power ◽  
Reactive Power Flow ◽  
Flow Controller ◽  
Power Flow Controller

The equipments based on the power electronics have been improved under the name of Flexible Alternating Current Transmission Systems (FACTS) in the last years. Unified Power Flow Controller (UPFC) is the most widely used FACTS device to control the power flow and to optimize the system stability in the transmission line. UPFC is a FACTS devices that can control active and reactive power flow in transmission line by means of injection controllable series voltage to the transmission line. This paper proposes a new connection for a Unified Power Flow Controller (UPFC) to control the active and reactive power flow control in two sides of a transmission line independently and it regulates bus voltage in the same transmission line, furthermore it is possible to balance line current too. This connection of the UPFC will be called an center node UPFC (C_UPFC). It is one of the newest devices within the FACTS technology. The structure and capability of the C_UPFC is discussed and its control scheme is based on the d-q orthogonal coordinates. According to this, the performance of UPFC for several modes of operations using different control mechanisms based on Proportional-Integral (PI) and PID based controllers has been studied. The obtained simulation results from Matlab/simulink confirm the effective features.

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