Timeline for Controlling the speed of a single phase 4-pole induction motor
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Oct 3, 2021 at 12:44 | comment | added | user80875 | The VFDs with 220-230V, single-phase input are generally for 220-230V, 3-phase motors. You would need to search to see if any include a voltage boost for 415V motors. In the North America market, 230/460V dual voltage motors are common, so that influences the availability of VFDs. In your market, VFD availability likely also matches the commonly available motors. | |
| Oct 3, 2021 at 4:46 | comment | added | electrophile | Would the 3-phase motor operate at 415V? Or would the VFD take care of that? I realize that these are noob questions... | |
| Oct 2, 2021 at 13:20 | comment | added | Kartman | It seems that in the US and Australia there is a ready supply of dead exercise treadmills. These usually have a 1.5HP or thereabouts DC permanent magnet motor in them. A simple triac speed controller works well. About $30 AUD for the speed controller and a 4 digit tacho from the Ebays. Job done. | |
| Oct 1, 2021 at 22:34 | comment | added | Harper - Reinstate Monica | @electrophile No, the whole point of a VFD is to take available power, turn it into DC. So the input phases don't matter. Then, once it's DC, they turn it back into AC at a frequency and phasing of your choosing. I completely agree, dump the 1-phase motor and get a 3-phase. It will play much better with VFDs. | |
| Oct 1, 2021 at 18:15 | vote | accept | electrophile | ||
| Oct 1, 2021 at 14:30 | comment | added | user80875 | @Kartman, thank you, see revised answer. | |
| Oct 1, 2021 at 14:30 | history | edited | user80875 | CC BY-SA 4.0 |
Added re single-phase
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| Oct 1, 2021 at 14:09 | comment | added | Kartman | The smaller VFDs are available with a single phase input option. For tapping, use a tapping head - it does the reversal. | |
| Oct 1, 2021 at 14:04 | comment | added | electrophile | Would those VFDs require a three phase power input because I currently have a single phase in my garage and getting three phase is expensive and quite tedious in my part of the world. | |
| Oct 1, 2021 at 14:01 | history | answered | user80875 | CC BY-SA 4.0 |