Variable speed drive for wound rotor induction motors (also called Slip Energy Recovery drive or SER drive). The HyperDrive combines maximum efficiency, recovering slip energy from the motor and returning it to the grid, with the ability to operate the motor above rated speed (hypersynchronous speed) without loss of torque, allowing the drive power to be raised above rated while maintaining the configuration.
  • Maximum efficiency. Slip energy recovery provides a higher level of efficiency compared to other technologies
  • Redundancy.Supported by a starter, it enables operation at rated speed even in failure situations, providing a soft transition
  • Hypersynchronous speed. Increase production safely with hypersynchronous speed without torque loss

Interface and connection HyperDrive


Type Ion Max Dual Dual Max
Motor nominal power 500….8000 kW 6000…10000 kW … 2 x 8000 kW …2 x 10000 kW
Max. rotor current 1250 A 2100 A 2 x 1250 A 2 x 2100 A
Max. rotor voltage 4200 V
Rotor configuration AFE AFE (x2) AFE AFE (x2)
Recovery configuration AFE AFE AFE AFE
Applications SAG mills, ball mills, crushers, conveyors… (constant torque vs speed)
Starting method Requires a separate LRS
Operating speed range Typically up to 70%-120% of synchronous speed
Efficiency at full speed 99.3% 99.1% 99.3% 99.1%
Power factor 0.99 0.99 0.99 0.99
Ambient temperature 0°C to 55°C with derating, 0°C to 40°C at maximum ratings
Altitude above sea level 0 to 2000 m (standard) , up to 5000 m (high altitude version)
Cooling method Air-cooled
Footprint (L x W) 4.65 x 1.20 m 7.25 x 1.30 m 9.30 x 1.20 m 1.45 x 1.30 m
Redundancy Bi-directional bumpless transfer to LRS (manual/automatic)
Human Interface Color touch screen HMI 7″ (800 x 640)
Communications Ethernet IP, EtherCat, ProfiNet, Profibus-DP, DeviceNet, Modbus
Recovery transformer Outdoor ONAN (standard) / indoor dry cast-resin (optional)