Subscribe To This Site
Brushless DC Motors
by Anonymous
I may be showing my ignorance, but I believe brushless DC motors run on three phase AC. Why is it called a DC motor? Well... Brushless DC motors run on batteries when you put them in an electric car, and 3-phase AC induction motors do the same. That's not the part that makes classifies them as AC or DC electric motors. Wikipedia's opinion: "...more a de facto convention rather than a rigid distinction." Brushless DC (BLDC) motors DO look and act a lot like 3-phase AC induction motors - including needing a more complicated controller than a series wound DC motor - but the torque curve of a BLDC motor is more similar to a permanent magnet DC motor (because that's basically what it is), and induction (slip) doesn't generate torque as it does in a 3-phase AC induction motor. Please check out ZEVA's excellent motors page for an animated illustration of these electric motors! Regards, Lynne
Join in and write your own page! It's easy to do. How?
|
