Synchronous Motors: Overview
Power supply | AC | Mains supply |
---|---|---|
Driver electronics need | No | |
Speed accuracy | Low | Effected by load torque Speed at rated point about 2600 rpm at 50Hz |
Speed control | No | |
Position control | No | |
Overloadablity / load inertia | Low | Little reserve to max.torque |
Lifetime | High | Limited by bearings Depend on lateral force |
Speed range [rpm] | 2600 | Rated speed at 50Hz |
Efficiency | Low, about 20% | At rated point (14% at ½ rated point) |
Power vs. size | Low | |
Winding thermal protection | Possibly | |
Load sensing | Medium | Current rises with load, but less than DC mot |
Stalling permissible | Yes | If winding designed for continuous duty cycle |
Electromag.interference EMI | Not Critical | |
Braking/Holding torque | Very low | No permanent magnets |
JE brand |