Hi guys. This is for my revision. I can't find enough information anywhere so I count on You
1. What are two ways of correcting power factor? I know about caps but what is the second one???
2. What effect motors have on the supply and why they need their power factor corrected? I know there are some kind of supply comany requirements that businesses must obey but cant find anything about it either. Also how it affect cable size/cost and switchgear cost?
2. I need two examples of eqiupment/situations that produce unwanted harmonics. Any ideas?
Thanks.

 

This might help a little, another member had me google "Synchronuous motor" Pretty interesting.
Also look up Inductive and Capacitative reactance
Motors are inductive loads, and they do funny things to the Volt/Current phase relationship.

No I didn't give you the exact answers, But this sounds like school work, and you'll get more out of it if you read it first, then ask specific questions. Remember "ELI the ICE man." when looking at phases. The harmonics are over my head....

http://www.allaboutcircuits.com/vol_2/chpt_11/index.html

 

Flourescent lighting presents a non linear load with harmonics.