Breaking News
Design How-To

Electric motor efficiency depends upon power factor - Part 1

NO RATINGS
Page 1 / 6 Next >
More Related Links
View Comments: Newest First | Oldest First | Threaded View
Code Monkey
User Rank
Rookie
re: Electric motor efficiency depends upon power factor - Part 1
Code Monkey   1/31/2011 4:06:29 PM
NO RATINGS
Modern AC drives are a boon to efficient application of induction motors. The lack of active PFC is a matter of cost. Three phase power is interesting in that delivered power has no ripple. If you add three sin^2 waves together, 120degs apart, you get a constant. So in theory, an active PFC circuit in each leg could feed power into the bulk cap and there would be very little ripple on the bulk cap. Maybe you could even eliminate the bulk cap.

Charlie007
User Rank
Rookie
re: Electric motor efficiency depends upon power factor - Part 1
Charlie007   12/10/2009 3:21:30 AM
NO RATINGS
You have everything in your article except for what is given in the title: "Power Factor Correction for Modern Motor Drives". Where is page 7???

Flash Poll
Radio
LATEST ARCHIVED BROADCAST
Join our online Radio Show on Friday 11th July starting at 2:00pm Eastern, when EETimes editor of all things fun and interesting, Max Maxfield, and embedded systems expert, Jack Ganssle, will debate as to just what is, and is not, and embedded system.
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week