Rotors and high-speed electric machines
The product is a synchronous reversible electric machine with excitation from high-coercitivity permanent magnets. Rotor supports are hydrodynamic bearings. Bearing supports are cooled and lubricated with oil supplied from the oil system. The product is cooled by air.
WELMA 25 is designed for dual mode operation converting mechanical energy into electrical energy (in generator mode) and vice versa (in motor mode).
WELMA 25 main parameters and dimensions:
|Rated power, kW||25|
|Number of phases||3|
|Rated phase voltage, V||220|
|Electrical efficiency (without rotor friction losses) at maximum power||96%|
|Maximum rotor speed, rpm||70 000|
|Overall dimensions (LxWxH), mm||340x220x260|
|Max. mass of electric motor, kg||35|