Hi all, I've come accross a problem of selecting a motor controller to use for some mobility based motors. I need a controller with dual motor control that will power two 275 Watt (Continuous) and 1000 watt peek current at 22.5 Volts for each motor. I will be using 2x12volt or 4x12volt deep cycle/gell/sla batteries wired for 24 volts. The motors are from a Mid Wheel Drive powerchair that is sitting in the corner decommissioned due to parts availability and a broken hand controller. The base is about 250 to 300 lbs and is steel framework, awesome for a big bot. I will, of course, be using a propeller for controlling the motor controller but want to keep the option open for Radio Control available. The motors are labeled DRVASMB1905 and DRVASMB1906 (Pride Mobility 6000z Power Chair). The controller from the chair is not an option, but I can open it to see the goodies it contains for possible parts.
When I look at the motor controllers available, I see 30Amp, 60Amp, 120 Amp, etc... but I don't want to play it too safe and buy anything overkill for these motors, on the other hand I don't want to burn up $1000 worth of motor either, and that's each new :/
I have a budget of no more than $500 for the controller. Would it be less expensive to build one, if so any recomendations?
I also have to choose or build a charge controller to be capable of charging the batteries while the device is still functional. I intend to try making it a tracked bot to plow snow from the walkway and driveway using GPS/BTLE or other devisable means, maybe a drink fetcher too :D
I am currently looking at the motor controllers from http://www.ionmc.com
but want to hear some feedback from others who may have used these types of motors, or can help me choose based on the rated wattage listed above.
BTW: these motors have brakes that need to be powered by 24 volts to let the motor spin, it can be removed but would prefer to keep brake system intact.