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Unread 24-11-2015, 19:46
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Re: CIM motor question

Here is a spreadsheet that I made about a year ago to generate power curves based on motor specs such as free speed, stall current, etc. Basically, you can make curves for pretty much any motor out there if you have the specifications available. Here's the Excel file:

motorCalc.zip

To use it, put the specs into input box on sheet 1, and it will then run a macro to calculate the speed, current, power, and efficiency at different torque intervals.

After the macro runs (might take a few minutes if you want a high resolution graph), go to the Chart1 sheet. Then use the select data tool to get the correct data ranges for the curve. (The ranges vary based on your motor/graph accuracy) Apologies if its not the most user friendly sheet, since I was a beginner at Excel/Visual Basic when I made it.

I tested its output against the existing CIM motor curve, and it seems to be accurate.

Last edited by theCADguy : 24-11-2015 at 20:52.
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