Power Factor for Induction Generator

The frequency of the generated power depends largely upon the construction of the generator and its speed.

It is not necessary to add capacitors at the supply end of the cable. Power factor correction is applied at the load end of the cable to minimise feeder losses, and may only be justifiable as an add-on investment either where there is a penalty on a supplier's tariff for loads that present a low power factor to the supply or where the losses are excessive, or perhaps both. Given that the generator is under the control of the original poster and not the subject of a tariff of penalty charges, the first criterion would not apply.

Concidering the two antipolar cases

a:Generator working unloaded. The only "load" it of course sees is a overrunning motor trying to decelerate it. The current it sees is not inductive its capacitive(!) if my logic is still intact.

b.Generator working full load. Indactive motor adds to it at will meaning mostly in the same phase direction.

(still overreving as seen by generator) Coil I'd use not capacitor. Your thoughts PWslack? Am I missing something? If motor triped at synchronus speed It would (theoretically) have also pf 1( not feasible of cource for an induction motor. Assume magnets to visualize this (pf issue only)

If you run an induction generator the exitation requirement for generation also drawn from grid. Or other wise, your generator while delivering power to your loads, the utility need to deliver reactive power not only to your loads, but also to your Induction generator. If there is penality class, or charges for reactive power consumption you may have to pay for it. You can avoid this payment if you install dynamic var controller at your point of common coupling.This will avoid drawal of reative power from utility source and the expenditure if any made for this will be paid back in a reasonable period and you can have good savings thereafter.

The induction generator is going to act as an inductive load . It generates a leading power factor or conversely - it acts draws lagging power factor from the grid.

Hence putting the IG will make you liable to pay penalty for low pf despite generating power.

The capacitors at load end or elsewhere may be put which will compensate for the generator as well as load. However the switching of these VAR must be properly done since the generator performance depends on these - since that is from where it is going to draw its excitation current.