Q: Which microcontroller is used in this project?
A: A 40 pin microcontroller from 8051 family is used in this project.
Q: Which inductive load is used in this project?
A: A 40 W tube light choke is used in this project.
Q: Can I replace the choke by induction motor?
A: Yes, the choke can be replaced by induction motor.
Q: Why is the 100W bulb used?
A: A 100W bulb is used to demonstrate as Linear or resistive load
Q: Why is the lamp used in series with the inductor?
A: A lamp is used in series with inductor, because a standard 40 watt tube light choke cannot be directly connected to mains.
Q: Can a bulb of lower watt be used in place of 100W?
A: Yes, a bulb of lower watt can be used.
Q: What is the formula for calculating smoothing capacitor value?
A: There is some approximated formula .Peak to peak ripple voltage = Load current in amps / (2*line frequency in hertz *capacitance in farads). But as rule of thumb for 1 A current 1000uF is best. Thus it is load dependent.
Q: Why are two transformers being used?
A: One transformer is used as PT while the other is as CT. Hence 2 numbers are must. This is an academic project which is designed to understand the technology used and not designed for real time use. The load capacity is about 200 watts.
Q: Why are 2.5µF capacitors used?
A: The 2.5µF capacitors are used as capacitive loads.
Q: Can inductance be increased?
A: Yes, inductance can be increased by increasing the wattage of bulb from 100W to 200W as it is used in series with the inductor
Q: What is UPFC and what is its purpose?
A: UPFC is unified power factor control and its purpose is to improve the power factor to unity..
Q: What is UPFC related lag and lead display?
A: It displays the lagging and leading power factor.
Q: Is this project compensating (correction) the power factor?
A: No, it just displays LAG or LEAD power factor