Open AccessSimulink Implementation of Voltage Stability Improvements Using STATCOM based 5-level Diode Clamped Converter
Author(s) -
Raa Hassan,
Suha Sabah Shyaa
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1105/1/012009
Subject(s) - control theory (sociology) , total harmonic distortion , voltage , controller (irrigation) , pulse width modulation , compensation (psychology) , voltage source , harmonic , pid controller , computer science , engineering , control (management) , electrical engineering , control engineering , physics , acoustics , temperature control , psychology , agronomy , artificial intelligence , psychoanalysis , biology
In this paper, a STATCOM based on Five-level Diode Clamped Multilevel Converter is used to maintain the bus voltage at specific bus bar in a suggested grid under various abnormal conditions like 2-phase to ground fault, load disturbance and source disturbance. The suggested grid consists of a single machine, transmission line and loads. The compensation procedure is carried out and compared between the two suggested control methods, the first method was the traditional control method using Phase Shifted-PWM controller which is used to improve the voltage profile. The Second one was the Finite Set-Model Predictive Controller for improving the voltage profile. The simulation results show that the two methods provided significant improvements of the bus voltage profile. Moreover, the improvement of voltage profile using FS-MPC method is less over shoot and attains a steady state better than the conventional PS-PWM when the system is subjected under many disturbances. The results of the harmonic effect show low values of total harmonic distortion (THD) of supply voltage and current.