MICROCONTROLLER BASED SPWM GENERATOR: A CONVENTIONAL DESIGN PERSPECTIVE THROUGH GRAPHICAL ORIENTED APPROACH

In this paper, a comprehensive design strategy was proposed and implemented for the design of a single phase sinusoidal pulse width modulation (SPWM) waveform. Excel software was used to generate the timing sequence, and then fed to a microcontroller unit (PIC16F877A). Through Excel, complex programming effort could be avoided and the whole data arrays can be presented graphically. The effectiveness of the timing sequence was validated by using PROTEUS software. The simulation result shows that the SPWM waveform achieved the desired goals.

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