Efficiency in motor control
Efficiency in motor control
(OP)
I have been asked to provide some input on improving efficiency in motor control. Improved motor efficiency is only one part of the equation as most of the energy wastage is in the driven load. Any good ideas or pointers?
Mark Empson
http://www.lmphotonics.com





RE: Efficiency in motor control
RE: Efficiency in motor control
Can you be more specific about what info you want.
RE: Efficiency in motor control
Mark Empson
http://www.lmphotonics.com
RE: Efficiency in motor control
RE: Efficiency in motor control
Electrically, an optimal rating is to be arrived at depending on the load parameters. This would mean matching the prime mover characteristics with load characteristics. The result could be an AC / DC / Servo...
Electronically, the speeds or torque controlling methods (considering feedbacks and tolerences)have to be incorporated in the control scheme resulting in simple V/F, Vector control, analog/digital, servo...with application specific modules.
Mechanically, the losses in the transmissions have to be looked into. This is one aspect that people seem to overlook in most cases. A worm reduction gearbox is a highly inefficient gearbox for large reduction ratios (so much so that in many cases motors are selected more to cover the losses in the gearboxes than to drive the machine) and planetary / hellical gearboxes are much more efficient.
So, invariably it is the overlapping areas of engineering and economics that decide selection of the right combination and this overlapping area would shift from application to application.