WMagnet Permanent Magnet Synchronous Motor
WEG WMagnet permanent magnet synchronous motor from 11 to 150 kW with NdFeB rotor magnets, driven by a WEG inverter with sensorless vector control.
Specifications
- Technology
- Permanent magnet (NdFeB) synchronous motor
- Motor output
- 11–150 kW
- Frame sizes
- IEC 132S–250S/M
- Speed range
- 180–3,600 rpm
- Voltage
- 380 V
- Degree of protection
- IP55 (IPW66 optional)
- Insulation class
- F
- Service factor
- 1.0
- Thermal protection
- PTC
- Cooling
- Self-ventilated
- Mounting
- B3D
- Drive
- WEG frequency inverter, 380–480 V, sensorless vector control, Modbus RTU
WMagnet is WEG's drive system combining a permanent magnet synchronous motor with a frequency inverter running dedicated software. Instead of a conventional squirrel cage, the rotor carries high-energy NdFeB (neodymium-iron-boron) magnets. This removes Joule losses in the rotor and delivers clearly higher efficiency than induction motors.
WMagnet cannot be connected directly to the mains: the sensorless vector control algorithm in the inverter controls the motor from zero to rated speed without an encoder. The motor provides constant torque over a 10:1 speed range without forced ventilation, and the magnet arrangement reduces vibration and noise while keeping efficiency high across the speed range.
Compared with an induction motor of the same output it offers a smaller frame, lower weight and lower volume; at its US launch WEG cited a 52% weight reduction, a 47% volume reduction and noise below 73 dB(A). Euronorm supports the sizing of WMagnet drive systems and provides quotations.
Features
NdFeB magnet rotor
Using magnets instead of a squirrel cage eliminates rotor losses and raises efficiency.
Sensorless vector control
The WEG inverter controls the motor from zero to rated speed without an encoder.
Constant torque over a wide range
Constant torque is available over a 10:1 speed range without a forced-cooling fan.
Compact and light
A smaller frame, lower weight and lower volume than an induction motor of the same output.
Low noise
The special magnet arrangement reduces vibration and noise.
Applications
- Pump and fan systems
- Compressors
- Escalator and elevator drives
- Conveyors and continuously running process lines
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