brushless motors
brushless motors
(OP)
Can anybody tell me whether there is any real advantage to a brushless motor rather than the older brush types?
Manufacturing cost?
reliability?
efficiency?
Thanks
Shaun
Manufacturing cost?
reliability?
efficiency?
Thanks
Shaun





RE: brushless motors
As for efficiency, a brush type motor could have better torque at startup...and be made to speed control more readily.
Jeff
www.motors-direct.co.uk
RE: brushless motors
This rule holds true for any component that has a wear item, like the old bronze worm gears.
This being said, if you need a really cheap speed control with a great speed range you can not beat a brush DC motor and control. If this is for home use or a non-critical application DC brush is the right answer. The cost of AC VFD's are coming down every year and their performance is going up but they have not yet reached the cost effectiveness of a DC brush.
Barry1961
RE: brushless motors
RE: brushless motors
<nbucska@pcperipherals DOT com> subj: eng-tips
RE: brushless motors
I assume you refer to "DC Brushless Motors".
If that is your question, eemotor (Electrical) gave a good resume of permanent magnet version (edge technology). I wonder if permanent magnets are available and cost effective for Hugh industrial size applications.
Coupled to a proper Variable Frequency Drive an SCIM (shorted circuit induction motor or better known as squirrel cage motor) is able to duplicate most of the traditional commutator DC Motor performance, but is not a 100% equivalent.
The benefits of getting rid of brushes are evident.