Systems and methods for shunt power factor correction
AssigneeJabil Inc.
InventorsRonald Beebe, Christopher Compton, David Eckerson, Yizhe Liu, Salman Talebi-Rafsanjan
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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.
Claims20
A power inverter system, comprising:
- a controller capable of generating signals based on an analysis of current measured electrically proximate a meter operatively coupled via a grid power line to an electric distribution grid and via a load power line to a load;
- a power inverter 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.
A method for operating a power inverter, comprising:
- receiving DC power at a power input;
- receiving, at a signal input, signals from a controller, the signals based on an analysis of current measured proximate a meter operatively coupled via a grid power line to an electric distribution grid and via a load power line to a load;
- providing, at a power output, at least AC power to at least one of the load and the electric distribution grid;
- converting a voltage level of the DC power to an effective voltage level of the AC power;
- converting a current of the DC power to an effective current of the AC power;
- and
- configuring a plurality of components based on the signals received from the controller.
A method for operating a solar power system, comprising:
- receiving direct current (DC) power from a solar source coupled to an inverter;
- measuring a current of a grid power line proximate a meter, using a current clamp coupled to a spectrum analyzer;
- analyzing a spectrum of the measured current using the spectrum analyzer;
- and
- modifying alternating current (AC) power provided by the inverter in accordance with the analyzing.
Dependencies are inferred from the claim text.