Rotary electrical machine
AssigneeLucas Industries Limited
InventorEddie Wharton
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Abstract
A rotary, permanent magnet, electrical generator has a stator in which a voltage is induced by a rotor having permanent magnet pole pieces arranged in two rows. An actuator can cause relative rotation of the rows of pole pieces to maintain a substantially constant output voltage from the stator. The actuator is responsive to a servo pressure signal from a valve which is, in turn, responsive to rotor speed. The stator may include a saturating winding for maintaining the output voltage substantially constant under varying external loads.
Claims7
A rotary, permanent magnet, electrical machine, comprising a rotor having a plurality of first circumferentially spaced permanent magnet pole pieces and a plurality of second circumferentially spaced permanent magnet pole pieces, a first stator winding surrounding said rotor, means for providing a servo pressure signal which is dependent on the speed of said rotor, and an actuator responsive to said servo pressure signal for causing relative movement between said first and second pole pieces.
Dependencies are inferred from the claim text.