Power source regulator for wireline cable system
First Claim
1. A voltage control system (150) comprising:
- a transmission cable (134) having a characteristic impedance Z0 and a load impedance ZH at a distal end of the cable;
a power source (154) connected to the transmission cable (134) and configured to receive a voltage signal input (157) and to drive a source voltage VS based thereon;
a feedback unit (155) configured to receive the current (IS) generated by the power source (154) as an input and further configured to generate a feedback voltage signal based thereon;
a set voltage unit (152) configured to produce a constant set voltage signal; and
an adder (153) configured to add the set voltage signal to the feedback voltage signal to generate the voltage signal (157) that provides the input to power source (154).
1 Assignment
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Accused Products
Abstract
A system (150) for controlling voltage supplied to a transmission line system. System (150) includes a transmission cable (134) having a characteristic impedance and a load impedance connected at its distal end. A power source (154) is connected to transmission cable (134). Power source (154) is configured to receive a voltage signal input (157) and to drive a source voltage VS based thereon. A feedback unit (155) is configured to receive the power source current (IS) as an input and further configured to generate a feedback voltage (VF) that varies with IS. A set voltage unit (152) is configured to produce a substantially constant voltage (Vset) and an adder (153) is configured to add the set voltage (Vset) to the feedback voltage to generate the voltage signal (157) that provides the input to power source (154). The feedback unit (155) may include an impedance element (156) comprising a digital signal processor or other suitable circuit that models the short circuit impedance of the transmission line.
20 Citations
33 Claims
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1. A voltage control system (150) comprising:
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a transmission cable (134) having a characteristic impedance Z0 and a load impedance ZH at a distal end of the cable;
a power source (154) connected to the transmission cable (134) and configured to receive a voltage signal input (157) and to drive a source voltage VS based thereon;
a feedback unit (155) configured to receive the current (IS) generated by the power source (154) as an input and further configured to generate a feedback voltage signal based thereon;
a set voltage unit (152) configured to produce a constant set voltage signal; and
an adder (153) configured to add the set voltage signal to the feedback voltage signal to generate the voltage signal (157) that provides the input to power source (154). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireline cable system (150) comprising
a transmission cable (134) having a characteristic impedance Z0 and a load impedance ZH at a distal end of the cable; -
a power source (154) connected to the transmission cable (134) and configured to receive a voltage signal input (157) and to drive a source voltage VS based thereon;
a feedback unit (155) configured to receive the current (IS) generated by the power source (154) as an input and further configured to generate a feedback voltage signal based thereon;
a set voltage unit (152) configured to produce a substantially constant voltage signal; and
an adder (153) configured to add the set voltage signal to the feedback voltage signal to generate the voltage signal (157) that provides the input to power source (154). - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of controlling load voltage in an electronic system including a transmission cable (134), comprising:
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driving the electronic system with a source voltage (VS) derived by a voltage source (154) from an input to the voltage source;
measuring the source current (IS) produced by the voltage source (154);
applying the measured current to an impedance element (156) that models the short circuit input impedance of the transmission cable to generate a signal indicative of a feedback voltage (VF); and
adding the feedback voltage signal to a set voltage signal indicative of a set voltage (Vset) to produce the voltage source input. - View Dependent Claims (30, 31, 32, 33)
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Specification