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US 12,693,320 B2Granted
Electric meter
AssigneeLandis+Gyr Technology, Inc.
InventorsMatt Karlgaard, John Voisine, Frank Boudreau
Life of this patent
Estimating the term…
Abstract
The electric meter comprises: a line port for coupling to an electric distribution power source; a load port for coupling to a load; and an auxiliary port for coupling to at least one distributed energy resource device; a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port and a power supply (220) configured to provide power to the processor circuit, wherein the power supply is configured to receive electrical power from the auxiliary port and/or from the line port.
Claims19
An electric meter (100, 200) comprising:
- a line port for coupling to an electric distribution power source;
- a load port for coupling to a load;
- an auxiliary port for coupling to at least one distributed energy resource device;
- a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port;
- and
- a power supply (220) configured to provide power to the processor circuit, wherein the power supply is configurable between receiving electrical power from the auxiliary port and receiving electrical power from the line port,
- wherein, when a voltage at the line port is above a threshold level, the power supply (220) receives at least a portion of the electrical power from the line port.
4 more elements
An electric meter (100, 200) comprising:
- a line port for coupling to an electric distribution power source;
- a load port for coupling to a load;
- an auxiliary port for coupling to at least one distributed energy resource device;
- a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port;
- a power supply (220) configured to provide power to the processor circuit,
- wherein the power supply is configurable between receiving electrical power from the auxiliary port and receiving electrical power from the line port;
- a switch circuit (225, 325) configured to select the auxiliary port or the line port to provide electrical power to the power supply (220);
- and
- a control circuit (310) for controlling the switch circuit,
- wherein the control circuit (310) is configured to trigger the switch circuit (225, 325) to select the auxiliary port to provide electrical power to the power supply (220) if a voltage at the line port drops below a threshold level.
7 more elements
An electric meter (100, 200) comprising:
- a line port for coupling to an electric distribution power source;
- a load port for coupling to a load;
- an auxiliary port for coupling to at least one distributed energy resource device;
- a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port;
- a power supply (220) configured to provide power to the processor circuit, wherein the power supply is configurable between receiving electrical power from the auxiliary port and receiving electrical power from the line port;
- a switch circuit (225, 325) configured to select the auxiliary port or the line port to provide electrical power to the power supply (220);
- a control circuit (310) for controlling the switch circuit, and
- a local power supply (315) configured to supply electric power to the control circuit (310) and/or the switch circuit (225, 325), wherein the local power supply is configured to receive electrical power from both the line port and the auxiliary port.
5 more elements
An electric meter (100, 200) comprising:
- a line port for coupling to an electric distribution power source;
- a load port for coupling to a load;
- an auxiliary port for coupling to at least one distributed energy resource device;
- a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port;
- a power supply (220) configured to provide power to the processor circuit, wherein the power supply is configurable between receiving electrical power from the auxiliary port and receiving electrical power from the line port;
- a switch circuit (225, 325) configured to select the auxiliary port or the line port to provide electrical power to the power supply (220);
- and
- a control circuit (310) for controlling the switch circuit,
- wherein the power supply (220) comprises a switched-mode power supply.
6 more elements
An electric meter (100, 200) comprising:
- a line port for coupling to an electric distribution power source;
- a load port for coupling to a load;
- an auxiliary port for coupling to at least one distributed energy resource device;
- a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port;
- a power supply (220) configured to provide power to the processor circuit, wherein the power supply is configurable between receiving electrical power from the auxiliary port and receiving electrical power from the line port;
- and
- a dual input bridge circuit (415) having a first input coupled to the line port and a second input coupled to the auxiliary port.
4 more elements
An electric meter (100, 200) comprising:
- a line port for coupling to an electric distribution power source;
- a load port for coupling to a load;
- an auxiliary port for coupling to at least one distributed energy resource device;
- a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port;
- and
- a power supply (220) configured to provide power to the processor circuit, wherein the power supply is configurable between receiving electrical power from the auxiliary port and receiving electrical power from the line port;
- wherein the power supply (220) comprises a rectifier circuit (505) coupled to the line port and the auxiliary port, the rectifier circuit configured to:
- operate as a full-wave rectifier when a voltage is present at both the line port and the auxiliary port;
- and
- operate as a half-wave rectifier when a voltage is present at only one of the line port and the auxiliary port.
7 more elements
Dependencies are inferred from the claim text.