Ferroelectric transformer-free uninterruptible power supply (UPS) systems and methods for communications signal distribution systems
First Claim
1. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the UPS comprising:
- an input neutral line;
an input voltage line;
a first circuit that is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages, wherein the input voltage is an AC input voltage between the input neutral line and the input voltage line, and the first circuit comprises a battery and a third circuit that is configured to convert the AC input voltage between the input neutral line and the input voltage line into the first and second complementary DC voltage and to supply the first and second complementary DC voltage to the battery; and
a second circuit that is configured to convert the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor, the first and second circuits further being configured to connect the input neutral line to the output neutral line without an intervening transformer winding, wherein the second circuit comprises a DC-to-DC converter that is configured to convert the first and second complementary DC voltages into third and fourth complementary DC voltages; and
an inverter that is responsive to the third and fourth complementary DC voltages and is configured to convert the third and fourth complementary DC voltages into the AC voltage between an output neutral line and an output voltage line.
4 Assignments
0 Petitions
Accused Products
Abstract
Uninterruptible Power Supply (UPS) systems and methods for a communications signal distribution system, such as a cable television (CATV) signal distribution system that distributes a communication signal and an Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, include an input neutral line and an input voltage line. A first circuit is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages. A second circuit is configured to convert the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line, and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor. The first and second circuits are configured to connect the input neutral line to the output neutral line without an intervening transformer winding.
52 Citations
36 Claims
-
1. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the UPS comprising:
-
an input neutral line;
an input voltage line;
a first circuit that is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages, wherein the input voltage is an AC input voltage between the input neutral line and the input voltage line, and the first circuit comprises a battery and a third circuit that is configured to convert the AC input voltage between the input neutral line and the input voltage line into the first and second complementary DC voltage and to supply the first and second complementary DC voltage to the battery; and
a second circuit that is configured to convert the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor, the first and second circuits further being configured to connect the input neutral line to the output neutral line without an intervening transformer winding, wherein the second circuit comprises a DC-to-DC converter that is configured to convert the first and second complementary DC voltages into third and fourth complementary DC voltages; and
an inverter that is responsive to the third and fourth complementary DC voltages and is configured to convert the third and fourth complementary DC voltages into the AC voltage between an output neutral line and an output voltage line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable, the UPS comprising:
-
a first circuit that is responsive to a Direct Current (DC) input voltage and is configured to convert the DC input voltage into first and second complementary DC voltages; and
a second circuit that is responsive to the first and second complementary DC voltages and is configured to convert the first and second complementary DC voltages into an output AC voltage and to place the output AC voltage on a coaxial cable, wherein the second circuit comprises a converter that is responsive to the first and second complementary DC voltages and is configured to convert the first and second complementary DC voltages into third and fourth complementary DC voltages; and
an inverter that is responsive to the third and fourth complementary DC voltages and is configured to convert the third and fourth complementary DC voltages into the output AC voltage and to place the output AC voltage on a coaxial cable. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method for supplying power to a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the method comprising:
-
converting an input voltage between an input neutral line and an input voltage line into first and second complementary Direct Current (DC) voltages, wherein the input voltage is an AC input voltage between the input neutral line and the input voltage line;
converting the first and second complementary DC voltages into an output AC voltage between an output neutral line and an output voltage line while connecting the input neutral line to the output neutral line without an intervening transformer winding; and
connecting the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor;
wherein the step of converting an input voltage comprises converting the AC input voltage between the input neutral line and the input voltage line into the first and second complementary DC voltages, and supplying the first and second complementary DC voltages to a battery;
wherein the step of converting the first and second complementary DC voltages comprises converting the first and second complementary DC voltages from the battery into the output AC voltage between an output neutral line and an output voltage line;
wherein the step of converting the first and second complementary DC voltages comprises converting the first and second complementary DC voltages into third and fourth complementary DC voltages; and
converting the third and fourth complementary DC voltages into the output AC voltage between an output neutral line and an output voltage line. - View Dependent Claims (28, 29, 30, 31, 32)
-
-
33. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the UPS comprising:
-
an input neutral line;
an input voltage line;
a first circuit that is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages; and
a second circuit that is configured to convert the first and second complementary DC voltages into an output AC voltage between an output neutral line and an output voltage line and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor, the first and second circuits further being configured to connect the input neutral line to the output neutral line without an intervening transformer winding;
wherein the input voltage is a DC input voltage between the input neutral line and the input voltage line; and
wherein the first circuit is configured to convert the DC input voltage between the input neutral line and the input voltage line into the first and second complementary DC voltages wherein the second circuit comprises a DC-to-DC converter that is configured to convert the first and second complementary DC voltages into third and fourth complementary DC voltages; and
an inverter that is responsive to the third and fourth complementary DC voltages and is configured to convert the third and fourth complementary DC voltages into the output AC voltage between an output neutral line and an output voltage line. - View Dependent Claims (34, 35)
-
-
36. A method for supplying power to a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the method comprising:
-
converting an input voltage between an input neutral line and an input voltage line into first and second complementary Direct Current (DC) voltages;
converting the first and second complementary DC voltages into an output AC voltage between an output neutral line and an output voltage line while connecting the input neutral line to the output neutral line without an intervening transformer winding; and
connecting the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor wherein the input voltage is a DC input voltage between the input neutral line and the input voltage line; and wherein the step of converting an input voltage comprises converting the DC input voltage between the input neutral line and the input voltage line into the first and second complementary DC voltages;
wherein the step of converting the first and second complementary DC voltages comprises converting the first and second complementary DC voltages into third and fourth complementary DC voltages; and
converting the third and fourth complementary DC voltages into the output AC voltage between an output neutral line and an output voltage line.
-
Specification