Pole-phase modulated toroidal winding for an induction machine

Details Pole-phase modulated toroidal winding for an induction machine Pole-phase modulated toroidal winding for an induction machine

1998-03-05

1999-11-02

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310208, 310254, 310179, 310216, H02K 300, H02K 116

Patent

active

059776790

ABSTRACT:
A stator (10) for an induction machine for a vehicle has a cylindrical core (12) with inner and outer slots (26, 28) extending longitudinally along the inner and outer peripheries between the end faces (22, 24). Each outer slot is associated with several adjacent inner slots. A plurality of toroidal coils (14) are wound about the core and laid in the inner and outer slots. Each coil occupies a single inner slot and is laid in the associated outer slot thereby minimizing the distance the coil extends from the end faces and minimizing the length of the induction machine. The toroidal coils are configured for an arbitrary pole phase modulation wherein the coils are configured with variable numbers of phases and poles for providing maximum torque for cranking and switchable to a another phase and pole configuration for alternator operation. An adaptor ring (36) circumferentially positioned about the stator improves mechanical strength, and provides a coolant channel manifold (34) for removing heat produced in stator windings during operation.

REFERENCES:
patent: 228544 (1880-06-01), Maxim
patent: 2424443 (1947-07-01), Evans
patent: 2872603 (1959-02-01), Herr
patent: 3774062 (1973-11-01), Johnson
patent: 4087711 (1978-05-01), Kirtley, Jr. et al.
patent: 4547713 (1985-10-01), Langley et al.
patent: 4563606 (1986-01-01), Fukiasawa et al.
patent: 4701656 (1987-10-01), Fawzy
patent: 5079467 (1992-01-01), Dorman
patent: 5334899 (1994-08-01), Skybyk

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