Quote:
Originally Posted by Ether
All else being equal, which do you think will consumer more power, and under what operating conditions?
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In a constant velocity situation, when I did the math, it looked like the 4 Cim system drew more power. This was because each motor required more current to run at the same speed vs a 6 cim drive. If you're drive system takes 100 amps to hold the speed it is currently at, the 4 cim drive will be pulling 25 amps per cim, vs the 6 cim drive at 16.66 amps per cim. This means you can apply less voltage per cim in order to keep the same speed. This is only in the physical motors though. The entire system together will draw the same amount of power. Its just that the cims can be ran in a more efficient part of the curve.
When accelerating, the 6 cim will draw more power, but it will reach the constant velocity situation faster, when it will start drawing less current.
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