Eddy Current Variable Speed Drives

dynamag eddy current drives are manufcatured in various combonitions:

integral design – fitted with ac induction motor

modular design – independent input & output shafts.
drive-brake combinations –for control acceleration & deceleration
air-cooled drives – self cooled & fan cooled
water-cooled drives – 100 hp onwards
totally enclosed - for boiler applications
eddy current brakes
electronics to match – for various industrial automation applications.

stationary field no slip-rings or carbon brushes to wear. Driving & driven parts are mechanically free, don’t touch each other. The coil is glass taped and epoxy moulde

d to prevent ingress of moisture or dust. All coils are made of high-grade polyester coated copper conductors.

low residual torque
low slip loss
rugged & sturdy
near zero maintenance

all eddy current drives & couplings have an integral 48 pole ac tacho-generator mounted around the output shaft, to give voltage 20 v ac / 1000 rpm, frequency of 400 hz / 1000 rpm & 24 pulse/revolution, proportional to speed, which is used for speed indication & speed feed back signal to the controller and maintains the output speed regulation within 1% for the load changes from 90% to 10%.

eddy current variable speed drives are available in self cooled, fin-cooled & water-cooled versions & offered as option with built in electromagnetic brake – for sudden stopping & built in eddy current brake – for controlled lowering & raising applications such a sluice gate drives.

ec drives & coupling are manufactured in vide rating rage 0. 1 hp to 100 hp in self cooled version, 100 hp onwards in water cooled version