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Electric motor efficiency depends upon power factor - Part 1

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Code Monkey
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re: Electric motor efficiency depends upon power factor - Part 1
Code Monkey   1/31/2011 4:06:29 PM
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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
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re: Electric motor efficiency depends upon power factor - Part 1
Charlie007   12/10/2009 3:21:30 AM
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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???

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