Timeline for VFD Power Savings physical explanation - cubic vs square relationship
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Jun 2, 2016 at 7:13 | comment | added | Neil_UK | I think you're agreeing with me, but I'm not totally sure. The motor delivers the power that the load requires. | |
| Jun 1, 2016 at 21:04 | comment | added | Prevost | are you referring to constant power vs constant torque electric motors? The second paragraph is still a vague explanation - the Darcy–Weisbach equation states that pressure drop is proportional to the speed (or flow) squared. If fluid power is defined as the product of pressure and flow, and pressure is proportional to the square of flow, then power would be proportional to the flow cubed - this explanation isn't really great either - the motor just has to deliver that same power and I guess not concerned right now how the VFD delivers it because Power In = Power Out. | |
| Jun 1, 2016 at 6:20 | history | answered | Neil_UK | CC BY-SA 3.0 |