Dynamic Braking a Linear Motor

[mgard79]

Given the catalog specifications of a linear motor with delta winding and a given payload, how does one determine the resistance necessary on each lead to dynamically brake the system?

 

[waross]

The best way is to use a regenerating drive and just drop the frequency below the corresponding linear speed.
You probably won't get enough braking out of an induction motor with a resistor. Often DC is injected into one or more windings and braking is caused by the resulting induced eddy currents in the LIM rail.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[blacksea]

If you use brushless motor and braking by short between phases, than braking current (force) is defined by linear velocity, back EMF constant and motor resistance.