Generator with brushless exciter field

Claim 2

A generator of the type comprising a plurality of stator windings connected in a preselected sequence, a plurality of leads adapted to connect said plurality of stator windings with a load to energize the load, generator field means in electromagnetic cooperation with said plurality of stator windings for inducing a potential therein, wherein said generator field means comprises at least a generator field winding and exciter means,; said exciter means comprising an exciter armature connected to said field winding for supplying a potential thereto, a first exciter field winding in electromagnetic cooperation with said exciter armature for controlling the noload voltage of said generator, a source of energy connected to said first exciter field winding for energizing said first exciter field winding, and second exciter field winding means in electromagnetic cooperation with said exciter armature and responsive to load current flowing through said leads for increasing the excitation of said generator field winding in proportion to said load current.

Claim 3

A generator as in claim 1, in which said first exciter field winding source of energy comprises a rectifier connected to said first exciter field winding, and leads for connecting said rectifier across at least a portion of at least one of said plurality of stator windings.

Claim 4

A generator as in claim 1, in which said first exciter field winding source of energy comprises a battery.

Claim 5

A generator as in claim 3, and a rectifier means connected in a series loop with said battery and at least one of said plurality of stator windings to control the charging of said battery.

Claim 6

A generator of the type comprising a plurality of stator windings connected in a preselected sequence, a plurality of leads adapted to connect said plurality of stator windings to a load to energize the load, generator field means in electromagnetic cooperation with said plurality of stator windings for inducing a potential therein, wherein said generator field means comprises at least a generator field winding and exciter means; said exciter means comprising an exciter armature connected to said field winding for supplying a potential thereto, a first exciter field winding in electromagnetic cooperation with said exciter armature for controlling the no-load voltage of said generator, a source of energy connected to said first exciter field winding for energizing said first exciter field winding, and second exciter field winding means in electromagnetic cooperation with said exciter armature and responsive to load current flowing through said leads for increasing the excitation of said generator field winding in proportion to said load current, each one of said stator windings comprising a different phase, and said second exciter field winding means comprises a second exciter field winding in electromagnetic cooperation with said exciter armature, a rectifier connected to said second exciter field winding, and connecting means for connecting said rectifier with one of said phases.

Claim 7

A generator of the type comprising a plurality of stator windings connected in a preselected sequence, a plurality of leads adapted to connect said plurality of stator windings to a load to energize the load, generator field means in electromagnetic cooperation with said plurality of stator windings for inducing a potential therein, wherein said generator field means comprises at least a generator field winding and exciter means; said exciter means comprising an exciter armature connected to said field winding for supplying a potential thereto, a first exciter field winding in electromagnetic cooperation with said exciter armature for controlling the no-load voltage of said generator, a source of energy connected to said first exciter field winding for energizing said first exciter field winding, and second exciter field winding means in electromagnetic cooperation with said exciter armature and responsive to load current flowing through said leads for increasing the excitation of said generator field winding in proportion to said load current, each one of said stator windings comprising a different phase, and said second exciter field winding means comprises a second exciter field winding in electromagnetic cooperation with said exciter armature, a rectifier connected to said second exciter field winding, and connecting means for connecting said rectifier with one of said phases.

Claim 8

A generator as in claim 5, in which said connecting means comprises a transformer having a primary winding connected in series with said one phase, and a secondary winding connected to said rectifier.

Claim 9

A generator as in claim 6, in which said transformer is a current transformer.

Claim 10

A generator as in claim 5, in which said connecting means comprises a lead connecting said rectifier in series with one of said plurality of stator windings.

Claim 11

A generator as in claim 5, in which each of said stator windings comprises a pair of coils, and means for selectively connecting each one of each of said pair of coils in parallel whereby said generator produces a low voltage output, or in series whereby said generator produces a high voltage output.

Claim 12

A generator as in claim 5, in which said first exciter field winding source of energy comprises a rectifier connected to said first exciter field winding, leads for connecting said rectifier across at least a portion of one of said plurality of stator windings, a battery, and a switch for selectively connecting said battery with said first exciter field winding.

Claim 13

A generator as in claim 10, and a rectifier and a current limiting resistor connected in a series loop with said battery and at least a portion of one of said plurality of stator windings to provide a charging circuit for said battery.