Single-Phase SPWM Inverter Ordered With Microcontroller

This paper presents the results obtained from the construction of a single-phase inverter, which produces a sinusoidal tension at the output. The microcontroller can store the necessary instructions, then execute them and generate pulses with the appropriate waveform to control the power transistors from the H-bridge of the unipolar-switching inverter. This switching technique was chosen because it could offer reduced switching losses, generate less EMI (electromagnetic interference), allow to reduce filter sizes, and offer better THD (total harmonic distortion) performance.