Motor Test Stand Recommendation - Eng-Tips

Hello all, I am considering putting together a motor test stand that would include a motor under test (typically 3 phase, permanent magnet synchronous, 440 vac, rpm, 150 HP) directly coupled to a load motor. The load motor would then be wired to a load bank. The test stand would be used for testing drives and motors in the 150 HP range. I am considering a used DC motor (or possibly three-phase wound field synchronous motor) as the load machine. This way the load could be controlled by resistive load bank setting or by field control. Is there any advantages or short falls between these two options, or is there another option that makes more sense? The test stand has to be inexpensive so used equipment is mandatory. Used DC motors seem to be plentiful. Thanks in advance for any advice. johnnyw,
There is a more elegant design. I suggest to consider using vector 3 phase induction motor and line regenerative vector adjustable speed drive. You can have full torque range at any speed use energy more efficient way. The cost however is more then DC motor and resistor bank. Baldor Electric manufactures both motors and drives for dynamometer test applications.
Regards,
Stan Komander, PE
Baldor Electric Comment on johnnyw (Electrical) May 7, marked ///\\Hello all, I am considering putting together a motor test stand that would include a motor under test (typically 3 phase, permanent magnet synchronous, 440 vac, rpm, 150 HP) directly coupled to a load motor. The load motor would then be wired to a load bank. The test stand would be used for testing drives and motors in the 150 HP range. I am considering a used DC motor (or possibly three-phase wound field synchronous motor) as the load machine. This way the load could be controlled by resistive load bank setting or by field control. Is there any advantages or short falls between these two options,
///DC motor will have the higher operational and maintenance costs.\\ or is there another option that makes more sense?
///Check electromagnetic break/coupling, e.g. at
or equivalent; (not to be interpreted as a sale of the product).\\