Timeline for VFD Power Savings physical explanation - cubic vs square relationship
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Jun 1, 2016 at 6:20 | answer | added | Neil_UK | timeline score: 2 | |
| Jun 1, 2016 at 4:48 | comment | added | user57037 | This is way outside my area. But when you run a pump faster, the back pressure and flow rate both go up, so that is not linear. Maybe square law? Concerning the rotational power equation, it may be a mistake to assume that torque remains constant. That is up to the mechanical load. With an agricultural irrigation pump, the torque required to spin the pump will be higher at higher rotational speeds, not constant. So as you speed up your VFD, the current will rise along with voltage. So all of your assumptions seem to be invalid. | |
| Jun 1, 2016 at 3:27 | history | edited | Prevost | CC BY-SA 3.0 |
added 27 characters in body
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| Jun 1, 2016 at 3:23 | history | asked | Prevost | CC BY-SA 3.0 |