This paper presents implementation of a carrierbased three-dimensional space vector PWM technique for threephase four-leg voltage source converter with microcontroller. The implementation of the 3-D SVPWM needs quite a bit of digital logic and computational power, and it might be a software and hardware burden even for recent digital signal processor (DSP) systems. Therefore, this paper presents a simple three-phase four-leg with carrier-based three-dimensional space vector PWM technique. The proposed technique can be implemented with microcontroller. The performance of proposed PWM strategy has been investigated and verified through simulations and experimental results for three-phase four-leg voltage source converter. This proposed method also can be applied to system that needs the synchronization between source voltage and load voltage.. (Abstract) Index Terms-Voltage Sag, Space Vector, three phase Inverter (key words)
Voltage sags are the most prevalent disturbance in electrical power system. This paper presents development of waveform generator based on MATLAB graphics user interface (GUI) and the microcontroller for generated waveform. The waveform generator allows users to select sag magnitude, sag duration, phase shift and voltage sag type of the each voltage sag. The waveform generator sends the parameter of the voltage sag waveform to the microcontroller to create the voltage sag. The simulation and experimental results have shown that this prototype can be used as voltage sag waveform generator.
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