Design of a Three-Phase Statcom-Based Inductive Static VAR Compensator Using DC Capacitor Voltage Control Scheme

2013 ◽  
Vol 5 (5) ◽  
pp. 1674-1680
Author(s):  
Abdulkareem Mokif Obais ◽  
Jagadeesh Pasupuleti
Keyword(s):  
Voltage Control ◽  
Static Var Compensator ◽  
Three Phase ◽  
Control Scheme ◽  
Capacitor Voltage

An Observer-Based Optimal Voltage Control Scheme for Three-Phase UPS Systems

2015 ◽  
Vol 62 (4) ◽  
pp. 2073-2081 ◽  
Author(s):  
Eun-Kyung Kim ◽  
Francis Mwasilu ◽  
Han Ho Choi ◽  
Jin-Woo Jung
Keyword(s):  
Voltage Control ◽  
Three Phase ◽  
Control Scheme

A super-twisting sliding mode observer for boost inverter-based hybrid photovoltaic -battery system control

2020 ◽  
Vol 42 (12) ◽  
pp. 2139-2154
Author(s):  
Akshaya K Pati ◽  
Nirod C Sahoo
Keyword(s):  
Sliding Mode ◽  
Sudden Change ◽  
Operating Conditions ◽  
Sliding Mode Observer ◽  
System Control ◽  
Pv System ◽  
Battery System ◽  
Three Phase ◽  
Control Scheme ◽  
Capacitor Voltage

This paper proposes an observer-based control scheme for a three-phase differential boost inverter in a hybrid PV-battery system. In a conventional control scheme for three-phase differential boost inverter (DBI)-based PV system, the measurements of input inductor current and voltage across output capacitors are required for obtaining the desired voltage at the load end. In a typical three-phase differential boost inverter operation, four voltage sensors and seven current sensors are required to achieve the desired AC voltage. In this paper, an observer-based strategy for elimination of these sensors without compromising power quality is reported. For estimation of boost inverter inductor current and output capacitor voltage, only DC-link capacitor voltage and the load currents are measured. A super-twisting sliding mode observer is used for estimation of the states of the boost inverter. A comparative study between the first-order sliding mode observer and super-twisting sliding mode observer is also presented. The simulation and experimental results show that the proposed observer-based control scheme works satisfactorily under various operating conditions such as sudden change of load, changes in solar insolation, and also under unbalanced load conditions.

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