Permanent Magnet Motors
The permanent magnet motor range extends the effective nominal speed range of the rugged industry workhorses down to 100 – 850 r/min. The motors can simplify drive systems by effectively eliminating the need of speed reduction devices. They are designed exclusively for frequency converter supply, where they provide high speed accuracy even without speed sensors because they are synchronous motors without rotor slip.
Features:
- Torque range 1000 to 50 000 Nm
- Construction based on standard induction motor design
- Rotor magnetization by permanent magnets
- Totally enclosed IP 55 construction
- Air- or liquid cooled
The most common present drive systems, which permanent magnet motor solution could replace:
- Traditional AC motor, frequency converter and gear box combination
- Traditional slow speed AC motor, typically 10-16-pole or slower with frequency converter
- Variable speed DC drive system with gear box
- Output power : 0 - 220 r/min, 17 - 1120 kW at 220 r/min
- 0 - 300 r/min, 25 - 1600 kW at 300 r/min
- 0 - 430 r/min, 38 - 2240 kW at 430 r/min
- 0 - 600 r/min, 57 - 2500 kW at 600 r/min
- Frame size : IEC 280 to 560
- Frame material : Cast iron/Welded steel
- Voltages : All voltages
- Protection : IP 55
- Cooling : Air or liquid
Related links
- Energy efficiency : Drives