Variable Frequency Drive.
There are more benefits to be had by using a VFD over any single phase motor other than the ability to alter the speed.
- Programmable start up ramp usually from zero to many seconds.
- Same with deceleration.
- Instant reversing
Plus some others not so obvious ;)
The output frequency and therefore speed can be altered from zero to
200-400 hz in many cases. BUT you have to be sensible! Some motors and other parts of the machine may not be able to withstand such speeds.As an example, my CNC machining centre has a spindle rated 2 pole motor which does 3000rpm at 50 Hz. I have max frequency set to 100Hz or 6000 rpm, which is what the spindle itself is rated to. I can go from
0.5Hz-100hz in 2 seconds and 100Hz to stop in 0.5 seconds (Braking resistor fitted).But your 1500 rpm will be easy for a delta connected 3 phase motor and VFD of 3HP rating.
J.S. or others may be able to suggest sources, I have used in the past
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Sometimes eve RS have good prices on VFD's.
Wayne...