Polyphase brushless DC and AC synchronous machines

A discoidal brushless induction motor-generator comprising:

• a single stator sandwiched between dual rotors containing multiple permanent magnets connected to a shaft having a shaft axis, said stator further comprising;
• a toroidal lamination core, including a core axis collinear with said shaft axis, said lamination core having a plurality of core slots defining an annular region, wherein the circumferential distance between adjacent core slots defines a slot pitch;
• a plurality of armature coils wound across said lamination core and through said circumferentially arranged core slots wherein;
• each said armature coil comprises a wire wound in multiple turns, said turns of wire being insulated from adjacent turns of said wire;
• said wire forming each of said armature coils having two wire ends terminating on the outer surface of said stator and connected to wire ends of other of said armature coils and ultimately to switching and control means;
• each of said armature coils being series connected over a predetermined number of slot pitches;
• whereby
• a magnetic flux of alternating polarity in each of said armature coils may be generated by a current flow through said wires of said armature coils;
• and
• said magnetic flux of said armature coils facing an opposing polarity of one of said permanent magnets on an adjacent rotor;
• said stator being centrally connected to a liquid cooled heat sink, whereby said heat sink cools said plurality of armature coils and said toroidal lamination cores of said stator;
• said permanent magnets being located on each of two sides of said rotors and are separated by a minimal air gap from a complementary side of said stator.

A polyphase machine comprising:

• a rotor, comprising multiple magnet means, said rotor being connected to a shaft having a shaft axis;
• a stator comprising;
• a lamination core, including a plurality of core slots;
• a plurality of armature coils wound across said lamination core and through said core slots;
• wherein said armature coil further comprises a wire wound in multiple turns, said turns of wire being insulated from adjacent turns of said wire and from said lamination core;
• said wire including wire ends terminating on an outer surface of said stator and connected in series to the wire ends of other armature coils;
• said plurality of said armature coils being connected to one another in series;
• wherein said stator includes a heat sink means for dissipating heat from said stator.