Abstract:
Wastage of power is global concern now a days so it is crucial to generate power efficiently. To cater it with suitable method needs to be implemented to avoid power losses. A three phase Inverter is working in active/reactive power compensation mode. It ensures that DC voltages are regulated while maintaining phase angle between voltage and current on AC side nearly zero. Sinusoidal waveforms are improved through a combination of Sine Pulse modulated waveform (SPWM) and LC filters to minimize distortion of grid parameters. Signals is being provided by Arduino to driver circuit and power is provided by voltage regulators. Power factor correction (PFC) aims to improve power factor, and therefore power quality. It reduces the load on the electrical distribution system, increases energy efficiency, harmonic distortion of input current and reduces electricity costs. In low power applications, compared with the single-phase AC supply PFC technology, the three-phase AC supply PFC technology has attracted people's attention owing to its simple control and low cost.
There are different methods/ways to improve power factor; like capacitor banks, phase advancers etc. But the circuit which we are using will be explained later on but the overall summery is explained below.
We have used three phase AC supply as an input and it is having DC load. To achieve this goal, Inverter is used as a rectifier instead of simple diode. In three phase AC supply (+ve power supply), Current and voltage are not in phase. In order to make it in phase, we will shift voltage to 180 degree (-ve power supply). In this way our objective for current and voltage to be in phase is achieved.
