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Electronic load to substitute for motor

Electronic load to substitute for motor

Electronic load to substitute for motor

(OP)
We test the electrical controls for our winches by actually connecting the controls to the winch and loading the winch.  I'd like to use a programable electronic load in place of the winch.  To simulate the on/of transients of the winch's motor the electronic load would ideally have a programable inductance, resistance, back emf generator and noise supply (for motor commutation noise simulation).  I'm guessing there aren't any electronic loads out there that would do this.  Any ideas?

RE: Electronic load to substitute for motor

I have not seen any. I think they would be cost prohibitive. However, there are programmable power supplies that you could use to simulate the motor current/voltage through your controls. This would include phase angles, harmonics, etc. I believe you are doing the best test possible - using the equipment it will be controlling.

RE: Electronic load to substitute for motor

I agree with buzzp. We use load banks to test current ratings and heat runs on solid state motor controls, but every unit we ship is connected to a motor and run against a load as well. It is the only truly valid test. We use a transaxle and disc brake system from a cargo tractor to load them. It was cheap and easy to implement, albeit not very high-tech looking.

The other somewhat simple system if you are speaking of smaller loads is to use 2 motors coupled together, the 2nd one connevcted to a variable speed drive so it can act as a varuialbe load against the test system. Search for the term "dynomometer" for reasources on building or buying one.

"Venditori de oleum-vipera non vigere excordis populi"


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