INDUCTION ELECTRICAL MACHINE Russian patent published in 1997 - IPC

FIELD: variable-speed electric drives or AC generators with regulated output power characteristics at variable speed of prime mover. SUBSTANCE: machine has unipolar machine with liquid-metal contacts of special-purpose design in the form of self-contained structural units - unipolar modules 6 and 7 which are, essentially, sealed chambers 14 and 27 formed by additional cylindrical magnetic cores 15, 16, 28 of stator and by internal hollow cylindrical ferromagnetic cores 21, 31 accommodating armatures of unipolar machines in the form of ferromagnetic barrels 25, 26 free to rotate in liquid metal. Unified design is proposed for building unlike-polarity magnetic systems for generator and motor unipolar modules. Machines are designed as self-contained unipolar modules. EFFECT: facilitated manufacture and assembly of induction machines of various power capacities, improved repairability due to provision for replacing faulty unipolar sealed modules by serviceable ones. 2 dwg