Simulink Implementation of Voltage Stability Improvements Using STATCOM based 5-level Diode Clamped Converter

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...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-06, Vol.1105 (1), p.12009
Main Authors: Hassan, Prof. Dr. Raa, Shyaa, Suha Sabah
Format: Article
Language:English
Subjects:
Clamping
Control methods
Controllers
Converters
diode clamped multilevel converter
Finite set model predictive control
Harmonic distortion
Phase shift carrier Pulse width modulation
Predictive control
STATCOM
Static synchronous compensators
Transmission lines
Voltage stability
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Summary: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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1105/1/012009