Contents
- 1 What is a power factor generator?
- 2 Why do induction generators need reactive power?
- 3 What is difference between induction motor and induction generator?
- 4 Why is the power factor of an induction generator always leading?
- 5 Can a generator be used as an induction motor?
- 6 Why does induction motor operate at lagging power factor?
What is a power factor generator?
Generator sets are rated in kVA at 0.8 power factor lagging. This 0.8 power factor is not the load power factor. It is a nominal power factor used to calculate the kW output of an engine to supply the power for a particular alternator kVA output.
Why do induction generators need reactive power?
In induction generators, the reactive power required to establish the air gap magnetic flux is provided by a capacitor bank connected to the machine in case of stand-alone system and in case of grid connection it draws reactive power from the grid to maintain its air gap flux.
How many watts are there in 1 kVA?
1. Convert the Real Power in Watts to Apparent Power in kVA (Kilovolt amps). Watts divided by 1000 times the power factor is equal to kilovolt-amps….kVA And kW Relation for AC And DC Circuits.
| Condition | Formula | |
|---|---|---|
| DC Circuit | Power Factor=1 | kW= kVA |
What is difference between induction motor and induction generator?
Using Induction Motors as Generators. An induction generator looks a lot like an induction motor used in industry and it is, the difference is when the machine is rotated faster than its normal operating speed, an induction generator produces AC electricity.
Why is the power factor of an induction generator always leading?
Induction motor absorbs lagging reactive power and hence it is said to operate at lagging power factor. Operating power factor of generator is defined based on whether it delivers lagging reactive power or it delivers leading reactive power. This is an interesting question!!
How is an induction generator connected to the grid?
An ordinary induction generator connected to a power grid will draw lagging reactive volt-amperes from the grid and supply real power to the grid. It is simultaneously a lagging power-factor load and a unity power factor supply.
Can a generator be used as an induction motor?
The indiscriminate use of Induction Motors as generators should be avoided. It is possible that a particular motor would not work well as a generator due to internal magnetic saturation. The internal voltage as a generator can be higher than it would be as a motor with the same terminal voltage.
Why does induction motor operate at lagging power factor?
Induction motor absorbs lagging reactive power and hence it is said to operate at lagging power factor. Operating power factor of generator is defined based on whether it delivers lagging reactive power or it delivers leading reactive power. Induction generator absorbs lagging reactive power.