SKF has developed a solution for the E-powertrain market that enables drive and control of electric motors in an accurate and robust manner. The SKF Rotor Positioning Sensor-Bearing Unit helps to achieve an efficient and robust electric motor drive.
- Provides high precision analog signals to determine rotor angular position, together with low friction and high speed bearing functionality
- Well suited for electric motor drive and control, and sinusoidal or vector type of control, such as for a permanent magnet synchronous motor
- Features a combination of rotor angular position sensor with low friction and high speed bearing
- Customizable to electric motor size and number of pole pairs tolerances
- Provides analog, sine and cosine outputs for rotor angular position
- Single ended or differential outputs
- Typical angle accuracy < ± 0.5 degrees (30 ft.)
- Offers angle repeatability < 0,1 degrees
- Operating temperature range of –40 C to 150 C
- Very robust against high electromagnetic and electric motor magnetic field
- Angular position information available from zero speed
- Provides high speed ability (shaft size dependant)
- Includes high sensor bandwidth
- Features improved electric motor efficiency, optimized system noise and improved energy recovery in braking phases
- Ensures good electric motor torque stability
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