IMPROVEMENTS IN OR RELATING TO DYNAMOMETERS

摘要

A rotary electric machine in which heat is generated due to electrical eddy currents when mechanically driven. The machine includes a rotor (3) of which the magnetic reluctance and electrical resistance are low. It lies between two stators (4) comprising a laminated ring (9) having slots (10) in which a multi-phase winding (11) is laid. Means (12) is provided to supply the winding with alternating current of which the frequency can be varied.