Electric power system with line drop compensation
First Claim
1. An electric power system having line drop compensation, said system comprising:
- a controllable electric power source having an output for supplying voltage to a power bus;
a local voltage regulator for monitoring the output voltage of said power source and for producing a control signal representative of a desired nominal output voltage of said power source;
a remote voltage regulator for sensing voltage on said power bus at a point of regulation located away from said power source, and for producing a pulse width modulated signal having a duty cycle representative of the voltage at said point of regulation;
a pulse width to trim bias converter for receiving said pulse width modulated signal and for producing a trim signal having a magnitude representative of the duty cycle of said pulse width modulated signal; and
means for combining said control signal with said trim signal to produce a modified control signal for controlling the output voltage of said power source to produce a predetermined voltage at said point of regulation.
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Accused Products
Abstract
An electric power system having line drop compensation includes a controllable electric power source having an output for supplying voltage to a power bus, a local voltage regulator for monitoring the output voltage of the power source and for producing a control signal representative of a desired nominal output voltage of the power source, and a remote voltage regulator for sensing voltage on the power bus at a point of regulation located away from the power source. The remote voltage regulator produces a pulse width modulated signal having a duty cycle representative of the voltage at the point of regulation. A pulse width to trim bias converter receives the pulse width modulated signal and produces the trim signal having a magnitude representative of the duty cycle of the pulse width modulated signal. This trim signal is combined with the control signal of the local voltage regulator to produce a modified control signal for controlling the output voltage of the power source to produce a predetermined voltage at the point of regulation.
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Citations
8 Claims
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1. An electric power system having line drop compensation, said system comprising:
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a controllable electric power source having an output for supplying voltage to a power bus; a local voltage regulator for monitoring the output voltage of said power source and for producing a control signal representative of a desired nominal output voltage of said power source; a remote voltage regulator for sensing voltage on said power bus at a point of regulation located away from said power source, and for producing a pulse width modulated signal having a duty cycle representative of the voltage at said point of regulation; a pulse width to trim bias converter for receiving said pulse width modulated signal and for producing a trim signal having a magnitude representative of the duty cycle of said pulse width modulated signal; and means for combining said control signal with said trim signal to produce a modified control signal for controlling the output voltage of said power source to produce a predetermined voltage at said point of regulation. - View Dependent Claims (2, 3, 4, 5)
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6. A method of line drop compensation in an electric power system, said method comprising the steps of:
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providing a controllable electric power source; connecting said controllable power source to a power bus; producing a control signal representative of a desired nominal output voltage of said power source; sensing voltage on said power bus at a point of regulation located away from said power source; producing a pulse width modulated signal having a duty cycle representative of the voltage at said point of regulation; producing a trim signal having a magnitude representative of the duty cycle of said pulse width modulated signal; and combining said control signal with said trim signal to produce a modified control signal for controlling the output voltage of said power source to produce a predetermined voltage at said point of regulation. - View Dependent Claims (7, 8)
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Specification