Electromagnetically efficient machine with transverse flux path - has high density airgap flux, low magnetic leakage, fast commutation properties and superconducting potential

摘要

A rotating electrical machine with stator (J) and rotor (R) elements has polereces in which a magnetic field at right angles to the direction of movement between rotor and stator is developed. The associated excitation is provided by separate windings, the first of which (a) is A.C. energized and the second (f) carries a constant D.C. of magnitude equal to the A.C. peak amplitude. A series of permanent magnets is disposed within the rotor for the suppression of interpolar leakage fields and the design prompts the use of superconductors under cryostatic control. USE/ADVANTAGE - Combined A.C. and D.C. fields reduce inducting of system and shorten commutation time, enabling higher peripheral speeds with increased power output. Improved efficiency as result of reduced copper, iron and leakage losses. Output for unit volume is increased. Principes equally appliance to linear induction motor.