초록 ▼

A lightweight engine-driven generator set including a stator having at least first and second windings (preferably three-phase) and a rotor having a soft magnetic core and a plurality of high energy product permanent magnets, separated by consequence poles, disposed proximate the stator such that re

A lightweight engine-driven generator set including a stator having at least first and second windings (preferably three-phase) and a rotor having a soft magnetic core and a plurality of high energy product permanent magnets, separated by consequence poles, disposed proximate the stator such that relative motion of the rotor and stator causes magnetic flux from the rotor to interact with and induce current in the stator windings. The first winding includes a predetermined number of turns corresponding to a first predetermined voltage output; and the second winding includes a predetermined number of turns corresponding to a second predetermined voltage output, the respective windings being grouped together as a unit and wound about the core such that the respective winding coils are wound in continuous close thermal contact with each other. The first winding generates a relatively high voltage, low amperage signal, and the second winding generates a relatively low voltage, high amperage signal; and a switch provides for selection of the desired output. Preferably the rotor is a hollow cylinder mounted on the engine shaft for rotation about the stator and such that the proper gap distance between rotor and stator is maintained during rotation of the rotor without bearings external to the engine. The low voltage, high amperage winding (or winding group) may be tapped to provide a selectable voltage output. Suitable rectifiers and inverters may be provided to effect selective DC and AC output signals.

대표청구항 ▼

[ We claim:] [1.] Apparatus comprising a stator including at least one winding, and a rotor disposed relative to the stator such that relative motion of the rotor and stator causes magnetic flux from the rotor to interact with and induce current in the stator winding,wherein the stator comprises:a s

[ We claim:] [1.] Apparatus comprising a stator including at least one winding, and a rotor disposed relative to the stator such that relative motion of the rotor and stator causes magnetic flux from the rotor to interact with and induce current in the stator winding,wherein the stator comprises:a soft-magnetic core;a first winding, including a predetermined number of turns corresponding to a first predetermined voltage output; anda second winding, including a predetermined number of turns corresponding to a second predetermined voltage output;the respective windings being grouped together as a unit and wound about the core such that the respective winding coils are wound in thermal contact with each other;and wherein:the rotor comprises a body of soft magnetic material with a plurality of permanent magnets in a surface disposed proximate to the stator;the magnets have a predetermined surface area;the magnets are mounted in insets formed in the rotor surface proximate to the stator;the rotor surface proximate to the stator includes portions between the insets to form respective consequence poles, each consequence pole having a predetermined surface area;the magnets are disposed within the insets, separated from adjacent consequence poles by a predetermined distance; andthe surface area of the magnets proximate the stator is greater than the surface area of the consequence poles proximate the stator.