Abstract:
This dissertation is dedicated to Modeling and
Simulation of STATic synchronous COMpensator
(STATCOM) for Reactive Power Control. Among Flexible
AC Transmission System (FACTS) controllers, the
STATCOM has shown feasibility in terms of cost
effectiveness in a wide range of problem solving abilities
from transmission to distribution levels. The Modular
Multilevel Cascaded Converters (MMCCs) with separated
Direct Current (DC) capacitors is the most feasible
topology for use as a power converter in the STATCOM
applications. To be able to operate in a high voltage
application, a large number of DC capacitors are utilized
in a MMCC based STATCOM. All DC capacitor voltages
must be balanced in order to avoid overvoltage on any
particular link. MMCC based on Single Delta Bridge Cells
(SDBCs) to a STATCOM, particularly for reactive-power
control. SDBC is categorized by cascade connection of
multiple single phase H-bridge (or full bridge) converter
cells per leg, hence simplifying flexible circuit design and
low voltage steps. Modeling and Simulation of a 100V
5kVA Pulse Width Modulated (PWM) STATCOM based
on the SDBC using MATLAB/Simulink, with focus on the
operating principle and performance. Simulation results
show that it can control positive sequence reactive power,
negative sequence reactive power and also low frequency
active power
