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A combined alternator-compressor including a brushless excitation structure for the alternator. The magnetic flux field for the alternator is generated by a rotating permanent magnet ring structure and a stationary toroidal control coil which is arranged concentrically with and between the rotating

A combined alternator-compressor including a brushless excitation structure for the alternator. The magnetic flux field for the alternator is generated by a rotating permanent magnet ring structure and a stationary toroidal control coil which is arranged concentrically with and between the rotating permanent magnet ring and an alternator base. The control coil is mounted in additive and subtractive magnetic relationship with the permanent magnet ring for control of the magnetomotive excitation field of the alternator.

대표청구항 ▼

In a unitary alternator-compressor assembly, a magnetic flux field generating assembly comprising: a single stationary toroidal magnetic field coil means for generating magnetic flux and connected to a source of direct voltage; a permanent magnet comprising a continuous ring, said ring rotatably con

In a unitary alternator-compressor assembly, a magnetic flux field generating assembly comprising: a single stationary toroidal magnetic field coil means for generating magnetic flux and connected to a source of direct voltage; a permanent magnet comprising a continuous ring, said ring rotatably concentrically arranged around said field coil and in the plane thereof; rotor means concentrically arranged around said field coil and permanent magnet and in the plane thereof, said rotor means forming a part of the magnetic flux path for said coil and permanent magnet, said rotor means comprising first and second discs, each said disc including a plurality of circumferentially arranged pole pieces, said pole pieces of said respective first and second discs alternatingly interleaved, and said permanent magnet ring clamped between said first and second discs; cylindrical stator means concentrically arranged around said rotor and field coil, and in the plane thereof for completing said magnetic flux path, said stator means including a stator coil whereby rotation of said rotor generates a voltage in said stator coil; and wherein the flux in said stator varies as a function of the magnitude of the voltage applied to said field coil.