# US 11,451,054 B2 · Systems and methods for shunt power factor correction > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,054 B2 - Document ID: US11451054B2 - Status: Granted - Kind: B2 - Application number: 17/114,028 - Filed: 2020-12-07 - Published: 2021-05-27 - Granted: 2022-09-20 - Earliest claimed: 2015-03-31 - Assignees: Jabil Inc. - Applicants: Jabil Inc. - Inventors: Ronald Beebe; Christopher Compton; David Eckerson; Yizhe Liu; Salman Talebi-Rafsanjan - Web page: https://patentgrep.com/patent/US11451054B2 ## CPC - H02J 3/12: Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load - H02J 3/18: Arrangements for adjusting, eliminating or compensating reactive power in networks - H02M 7/48: using discharge tubes with control electrode or semiconductor devices with control electrode - H02S 40/32: comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules - H02S 50/00: Monitoring or testing of PV systems, e.g. load balancing or fault identification - Y02E 10/50: Photovoltaic [PV] energy - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H02S: GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES (obtaining electrical energy from radioactive sources G21H1/12; light sensitive inorganic semiconductor devices H10F; light sensitive organic semiconductor devices H10K30/00; thermoelectric devices H10N10/00; pyroelectric devices H10N15/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Systems and methods are disclosed that operate to correct the electrical characteristics of an electric distribution system based on analysis at a particular point in the system, for example, at a customer's meter. To do so, the subject characteristic may be measured at the meter. The subject characteristic may be provided to a power inverter controller, which responds by modifying the characteristic of the inverter output to achieve the desired measurement at the meter. ## Claims ### Claim 1 A power inverter system, comprising: a plurality of controllers, each capable of generating signals based on an analysis of current measured electrically proximate to a respective plurality of meters, each being on an electric distribution grid to which it is individually operatively connected by a grid power line, and each being individually coupled via a load power line to a load corresponded to each of the plurality of meters; a power inverter corresponded to each of the plurality of controllers, comprising: a power input for receiving DC power; a signal input for receiving signals from the controller; a power output for providing AC power to at least one of the load and the electric distribution grid; a voltage converter for converting a voltage level of the DC power to an effective voltage level of the AC power; a current converter for converting a current of the DC power to an effective current of the AC power; and a plurality of components electrically responsive to the signals received from the controller, wherein the power inverter corresponded to each of the plurality of controllers is controlled by a wireles sly-communicative combination of the plurality of controllers to regionally balance at least a power factor across the plurality of meters by balancing individual ones of the power inverters within a particular region, as indicated by individual ones of the plurality of meters, against each other. ### Claim 2 (depends on 1) The power inverter system of claim 1, further comprising a photovoltaic array capable of providing the DC power to the power input. ### Claim 3 (depends on 1) The power inverter system of claim 1, wherein the voltage converter comprises one of a buck and a boost inverter. ### Claim 4 (depends on 1) The power inverter system of claim 1, wherein the power inverter further comprises a grid frequency transform. ### Claim 5 (depends on 1) The power inverter system of claim 1, wherein the load further comprises a DC load, and wherein the DC voltage received at the power input is at least partially provided unconverted to the DC load. ### Claim 6 (depends on 5) The power inverter system of claim 5, wherein the DC load comprises at least one battery. ### Claim 7 (depends on 1) The power inverter system of claim 1, wherein the signals generated comprise a modification to a power factor for execution by the plurality of components. ### Claim 8 (depends on 7) The power inverter system of claim 7, wherein the modification comprises an injection of reactive power. ### Claim 9 (depends on 7) The power inverter system of claim 7, wherein the modification comprises a harmonic distortion counteraction. ### Claim 10 (depends on 1) The power inverter system of claim 1, further comprising an analyzer capable of executing the analysis. ### Claim 11 (depends on 10) The power inverter system of claim 10, wherein at least one of the analyzer and the controller comprises a wireless communicator. ### Claim 12 (depends on 10) The power inverter system of claim 10, wherein the analyzer comprises a spectrum analyzer. ### Claim 13 (depends on 1) The power inverter system of claim 1, wherein the power inverter is bi-directional. ### Claim 14 (depends on 1) The power inverter system of claim 1, wherein the electrical measure proximate the meter comprises a clamp probe placed about a conductor supplying the meter. ### Claim 15 (depends on 1) The power inverter system of claim 1, further comprising: a direct current (DC) power source coupled to the power inverter; a spectrum analyzer coupled to the controller; a current clamp coupled to measure the current of the grid power line proximate the meter.