BL Motor Evaluation program

[GriffinRU]

Originally Posted by BrianG

That did the trick! After playing with it, I noticed it only happened when I changed to a motor where the top number in the power column reached four digits.

I also played around with some of the other features.

Exporting to an image is neat, except the bitmap is black and white.

Found another bug (sorry). If you right click the graph, select "visible items", then select "scale items", a box comes up. If you move the mouse over the box, an error appears:



An interesting thing I've noted. Max motor efficiency for XL motors is generally accepted as being at around 35k rpm. But, If I increase the voltage higher and higher, the efficiency increases and for a much wider/flatter range. However, the rpm for this is about 140k rpm and the power is on the high side at over 800w. I assume these graphs assume "ideal" magnets and super bearings? :)

I will try to fix that bug.

Do you want color printscreen feature, if yes then what area?

Brian, you need to be within the power envelope of the motor. With higher voltage you will get higher efficiency but you will also need to calculate losses on inertia, right now I am not taking this in calculation (there is a column in template for that for future) and that is why you can see high numbers. And yes this is close to ideal motor model.
Inside program limited to 150000 RPM as maximum, which is more then adequate for calculations, but in real world getting more then 50k is less practical.

Nominal Voltage for motor selected from database or calculated based on V = 35000/Kv plus rounding to high multiple of 1.2V.

Artur