Vehicle power supply system with voltage regulator load compensation

Claim 2

A power supply system for supplying a remotely positioned electrical load requiring a constant voltage, said load being connected to said system by elongated conductors of a predetermined length having a predetermined voltage loss, said system including in combination: AC voltage generating means having an output, rectifying means connected to said output and to said electrical conductors, and regulating means connected to said voltage generating means for regulating the latter to provide a corresponding voltage output from said system, said regulating means being coupled to the output of said generating means for sensing the voltage drop across said rectifying means, said regulating means varying the output voltage of said system proportionally to the voltage drop so as to compensate substantialLy for the voltage loss in said elongated conductors.

Claim 3

A power supply system for supplying a remotely positioned electrical load requiring a constant voltage, said load being connected to said system by elongated conductors of a predetermined length having a predetermined voltage loss, said system including in combination: AC voltage generating means having an output, rectifying means connected to said output and to said electrical conductors, and regulating means connected to said voltage generating means for regulating the latter to provide a corresponding voltage output from said system, said regulating means being coupled to the output of said generating means for sensing the voltage drop across said rectifying means, said regulating means varying the output voltage of said system proportionally to the voltage drop so as to compensate substantialLy for the voltage loss in said elongated conductors.

Claim 4

A power supply system for supplying a remotely positioned electrical load requiring a constant voltage, said load being connected to said system by elongated conductors of a predetermined length having a predetermined voltage loss, said system including in combination: AC voltage generating means having an output, rectifying means connected to said output and to said electrical conductors, and regulating means connected to said voltage generating means for regulating the latter to provide a corresponding voltage output from said system, said regulating means being coupled to the output of said generating means for sensing the voltage drop across said rectifying means, said regulating means varying the output voltage of said system proportionally to the voltage drop so as to compensate substantialLy for the voltage loss in said elongated conductors.

Claim 5

A power supply system as claimed in claim 1 wherein said rectifying means include a diode having a voltage drop thereacross which varies in accordance with the current output of said generating means, thereby to vary the output voltage of said system in accordance therewith.

Claim 6

A power supply system as claimed in claim 2 wherein said voltage generating means includes a three phase alternator having a field, wherein one of said phases is connected to the field of said alternator to provide excitation current therefor and wherein said regulating means is connected to a phase of said alternator output leading the phase supplying said field.

Claim 7

A power supply system as claimed in claim 2 wherein said electrical load comprises a battery and wherein said voltage generating means provides charging current to said battery.

Claim 8

A vehicle power supply system for providing charging current to a remotely located electrical load, said electrical load being connected electrically to said system via conductors having a predetermined voltage loss, said system including in combination: an AC voltage generating means having a three phase output rectifying means including a plurality of diode means, connected to the output phases of said generating means and to said electrical conductors for supplying a rectified output to said load, each of said diode means having a voltage drop thereacross which varies in accordance with the current output of said generating means, and regulating means connected to said system for regulating the output thereof to provide a predetermined output voltage, said regulating means connected to one of said phases for sensing the voltage drop across a corresponding diode means, said regulating means varying the level of said output voltage proportionally to the voltage drop across said diode means, thereby to compensate for the voltage loss of said electrical conductors.

Claim 9

A vehicle power supply system for providing charging current to a remotely located electrical load, said electrical load being connected electrically to said system via conductors having a predetermined voltage loss, said system including in combination: an AC voltage generating means having a three phase output rectifying means including a plurality of diode means, connected to the output phases of said generating means and to said electrical conductors for supplying a rectified output to said load, each of said diode means having a voltage drop thereacross which varies in accordance with the current output of said generating means, and regulating means connected to said system for regulating the output thereof to provide a predetermined output voltage, said regulating means connected to one of said phases for sensing the voltage drop across a corresponding diode means, said regulating means varying the level of said output voltage proportionally to the voltage drop across said diode means, thereby to compensate for the voltage loss of said electrical conductors.

Claim 10

A vehicle power supply system as claimed in claim 5 wherein said AC generating means further includes field winding means coupled to a predetermined output phase of said AC generating means for receipt of excitation current therefrom, and wherein said regulating means is connected to another of said output phases leading said phase connected to said field winding means electrically.

Claim 11

A vehicle power supply system as claimed in claim 6 wherein said regulating means includes means for setting a reference voltage for limiting the output voltage of said system, wherein said regulating means senses the output voltage of said system and compares a sensed voltage with said reference voltage for controlling the output voltage and wherein said diode means include a negatively poled rectifying diode having a negative voltage drop, said negative voltage drop decreasing the value of the voltage sensed by the regulating means, thereby increasing the output voltage accordingly.