Space Vector Pulse Width Modulation (SVPWM) method is widely used as a modulation technique
to drive a three-phase inverter. It is an advanced computational intensive method used in pulse width modulation (PWM) algorithm for the three-phase voltage source inverter. Compared with the other PWM techniques, SVPWM is easier to implement, thus, it is the most preferred technique among others. Mathematical model for SVPWM was developed using MATLAB/ Simulink software. In this paper, the interface between MATLAB Simulink with the three-phase inverter by using Arduino Uno microcontroller is proposed. Arduino Uno generates the SVPWM signals for Permanent Magnet Synchronous Motor (PMSM) and is described in this paper. This work consists of software and hardware implementations. Simulation was done via Matlab/Simulink software to verify the effectiveness of the system and to measure the percentage of Total Harmonic Distortion (THD). The results show that SVPWM technique is able to drive the three-phase inverter with the Arduino UNO.
Flexible AC Transmission System (FACTS) devices are used in to improve stability and loadability of
transmission networks as well as minimise losses . Types of FACTS that are normally used are Thyristor
Controller Series Compensator (TCSC) and Unified Power Flow Controller (UPFC) which is to control
power flow and stability of the power system at a certain location. The TCSC is suitable because it can
be installed in a long transmission line system while UPFC can solve any reactive power problems.
The objective of this study is to minimise total power losses and to improve the voltage profile by using
FACTS devices in the transmission system. This paper proposes a static voltage stability index (SVSI)
to determine the size and placement of TCSC and the Evolutionary Programming (EP) technique. The
results of the transmission line losses and voltage profile using TCSC and UPFC are compared in order
to demonstrate which FACTS device can produce better results. The IEEE 14 bus system is used in this
study to validate the findings.