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Enphase Energy Inc patents


Recent patent applications related to Enphase Energy Inc. Enphase Energy Inc is listed as an Agent/Assignee. Note: Enphase Energy Inc may have other listings under different names/spellings. We're not affiliated with Enphase Energy Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "E" | Enphase Energy Inc-related inventors


Method and apparatus for controlling power grid member behavior

A system and method for controlling a behavior of at least one member of a local power grid. In one embodiment, the system comprises a monitoring system, comprising at least one processor, for obtaining a measure of grid stress and deriving at least one of financial incentives and financial disincentives, based on the measure of grid stress, to cause at least one member of the local grid to change behavior.. ... Enphase Energy Inc

Method and apparatus for determining key performance photovoltaic characteristics using sensors from module-level power electronics

A method and apparatus for using mlpe data for characterizing real-world operation a pv module. In one embodiment, the method comprises obtaining a plurality of temperature measurements, wherein each temperature measurement is a measure, by an mlpe proximate to a pv module, of temperature; obtaining a plurality of dc voltage measurements, wherein each dc voltage measurement of the plurality of dc voltage measurements is a measure by the mlpe of a dc voltage of the pv module; obtaining a plurality of dc current measurements, wherein each dc current measurement of the plurality of dc voltage measurements is a measure by the mlpe of a dc current of the pv module; obtaining racking design information with respect to the pv module; and determining a plurality of pv module temperatures for the pv module based on the plurality of temperature measurements and the racking design information.. ... Enphase Energy Inc

Method and apparatus for energy flow visualization

A method and apparatus for visualizing energy flows. In one embodiment, the method comprises (i) obtaining a plurality of measured energy flow values for a plurality of energy flows between a plurality of energy sources and a plurality of energy sinks, wherein at least one of measured energy flow value is a measurement of energy flow from an energy source to two or more energy sinks; (ii) computing a plurality of energy flow values based on the measured energy flow values and a set of energy priority allocation rules, wherein each computed energy flow value of the plurality of energy flow values represents energy flow between an energy source of the plurality of energy sources and an energy sink of the plurality of energy sinks; and (iii) generating a display image representing at least one computed energy flow value of the plurality of energy flow values.. ... Enphase Energy Inc

Matrix planar transformer

A planar matrix transformer assembly. In one embodiment, the assembly comprises (a) a core comprising multiple center posts in a matrix pattern; and multiple edge posts along edges of the core for a magnetic flux return path; (b) a single-turn layer comprising a top winding on the top the layer to form a single turn around each center post; and a bottom winding electrically coupled to the top winding and on the bottom of the layer to form a single turn around each center post; and (c) a multi-turn layer comprising multiple top-side windings on top of the layer, wherein each top-side winding is a multi-turn winding around a different center post; and multiple bottom-side windings on the bottom of the multi-turn layer, wherein each bottom-side winding is (i) electrically coupled to a different top-side winding in a one-to-one correspondence, and (ii) a multi-turn winding around a different center post.. ... Enphase Energy Inc

Dual-position mount for power electronic devices

An apparatus for mounting a power electronic device to a photovoltaic (pv) module. In one embodiment, the apparatus comprises a mounting bracket adapted to mechanically couple the power electronic device to the backsheet of the pv module such that the power electronic device can be interchangeably positioned in a retracted position and an extended position, the extended position having an air gap between the power electronic device and the backsheet.. ... Enphase Energy Inc

Method and apparatus for increased energy harvest in a microgrid

A method and apparatus for power converter current control. In one embodiment, the method comprises controlling an instantaneous current generated by a power converter that is part of an ac battery such that (i) the power converter appears, from the perspective of an ac line coupled to the power converter, as a virtual ac voltage source in series with a virtual impedance, wherein real and reactive phasor currents for the power converter are indirectly controlled by modifying amplitude and phase of a virtual ac voltage waveform that defines the virtual ac voltage source, and (ii) active power flow is prioritized while the ac battery is operating in a charge mode.. ... Enphase Energy Inc

Method and apparatus for coordination of generators in droop controlled microgrids using hysteresis

A method and apparatus for autonomously operating a microgrid power generator. In one embodiment, the method comprises obtaining a first measurement of at least one grid parameter of a microgrid transmission line coupled to a power generator in a microgrid; comparing the first measurement to a turn-on threshold; initiating, when the first measurement is less than the turn-on threshold, power generation by the power generator; obtaining, after initiation of the energy generation, a second measurement of the at least one grid parameter of the microgrid transmission line; comparing the second measurement to a shut-down threshold that is greater than the turn-on threshold; and stopping, when the second measurement exceeds the shut-down threshold, the power generation by the power generator.. ... Enphase Energy Inc

Method and apparatus for using module-level power electronics data for validating distributed energy resource system parameters

A method and apparatus for validating distributed energy resource as-designed parameters. In one embodiment the method comprises obtaining, from mlpe coupled to a pv module of the der, data corresponding to sunrise on a particular day; obtaining, from mlpe, data corresponding to sunset on the particular day; determining, by the computer system and using the data corresponding to the sunrise and the data corresponding to the sunset, (i) the length of the particular day and (ii) the solar noon for the particular day; computing, by the computer system and using the length of the particular day and the solar noon for the particular day, an as-built latitude for the pv module and an as-built longitude for the pv module; and comparing, by the computer system, (a) the as-built latitude to an as-designed latitude for the pv module, and (b) the as-built longitude to an as-designed longitude for the pv module.. ... Enphase Energy Inc

Autonomous charge balancing of distributed ac coupled batteries with droop offset

A system and apparatus for autonomous charge balancing of an energy storage device of the microgrid. In one embodiment the apparatus comprises the energy storage device; and a power conditioner, coupled to the energy storage device, comprising a droop control module for operating the power conditioner, during an autonomous mode of operation, such that the state of charge of the energy storage device is autonomously driven toward the state of charge of at least one other energy storage device of the microgrid.. ... Enphase Energy Inc

Method and apparatus for minimizing circulating currents in microgrids

A method and apparatus for minimizing circulating currents on a power distribution line. In one embodiment, the method comprises dynamically adjusting a turns ratio of a tap changing transformer, the tap changing transformer coupled to a power grid distribution line that is also coupled to a plurality of microgrid branches wherein at least one microgrid branch of the plurality of microgrid branches comprises a distributed energy resource (der), based on a reactive power measured locally to the tap changing transformer, to minimize current circulating on the power grid distribution line.. ... Enphase Energy Inc

Ungrounded inverter enclosure and cabling

A system and apparatus for power conversion without a connection to ground. In one embodiment, the apparatus comprises an inverter having an enclosure formed from an insulating material, wherein the inverter receives a dc input and generates, from the dc input and without any ground connection, a first ac line voltage carrying output and a second ac line voltage carrying output.. ... Enphase Energy Inc

Fire detection, automated shutoff and alerts using distributed energy resources and monitoring system

A method and apparatus for using distributed energy resources (ders) to detect a fire event. In one embodiment, the method comprises receiving, at a controller comprising at least one processor, temperature data from at least one power conditioner of a der; analyzing, by the controller, the temperature data with respect to at least one temperature reference; determining, by the controller and based on analyzing the temperature data with respect to the at least one temperature reference, whether a fire event exists; and when it is determined that a fire event exists, performing, by the controller, at least one action for addressing the fire event.. ... Enphase Energy Inc

Method and apparatus for sequence of event logging by a power conditioner

A method and apparatus for sequence of event (soe) data logging. In one embodiment, the method comprises continuously recording, at a power conditioner coupled to a power distribution line, data obtained by sampling a waveform of the power distribution line during a sampling window; analyzing, by the power conditioner, the data to determine whether an event has occurred; and based on the analysis, maintaining the data when it is determined that the event has occurred, and discarding the data when it is determined that the event has not occurred.. ... Enphase Energy Inc

Pv module power electronics mounting system with compression spring

An apparatus and system for mechanically coupling a power conditioning unit (pcu) to a photovoltaic (pv) module. In one embodiment, the apparatus comprises a base member, adapted for mounting a power conditioning unit (pcu) on a pv module backsheet, comprising a plurality of pcu retention members for retaining the pcu; and at least one compression spring, coupled to the base member, for maintaining the pcu in a position, with respect to the pv module backsheet, that can be dynamically changed between a first position and a second position.. ... Enphase Energy Inc

03/16/17 / #20170078117

Method and apparatus for channel estimation for three-phase plc systems

A method and apparatus for channel estimation for a three-phase communication system. In one embodiment, the method comprises generating a first plurality of preamble patterns for use in a first data stream of two independent data streams; generating a second plurality of preamble patterns for use in a second data stream of the two independent data streams; transmitting the first and the second data streams via a communications channel comprising a three-wire three-phase system; receiving a version of the first data stream comprising the first plurality of preamble patterns and a version of the second data stream comprising the second plurality of preamble patterns; and generating, based on the received version of the first plurality of preamble patterns and the received version of the second plurality of preamble patterns, a channel estimation matrix for estimating the imbalance of the communications channel.. ... Enphase Energy Inc

03/16/17 / #20170077707

Method and apparatus for impedance matching in virtual impedance droop controlled power conditioning units

A method and apparatus for setting a virtual impedance ratio of a power conditioning unit (pcu). In one embodiment, the method comprises applying a disturbance to a virtual ac voltage of a power conditioning unit (pcu) operating in a virtual impedance droop control mode in which the pcu appears, from the perspective of a power grid coupled to the pcu, as a virtual ac voltage source in series with a virtual impedance; measuring the phase of the applied disturbance on the power grid; comparing the measured phase of the applied disturbance on the power grid to the phase of the disturbance; and adjusting, when the measured phase of the applied disturbance on the power grid differs from the phase of the disturbance by more than a threshold amount, a ratio of a resistive impedance of the virtual impedance to an inductive impedance of the virtual impedance.. ... Enphase Energy Inc

02/09/17 / #20170040908

Method and apparatus for resonant power conversion

A method and apparatus for providing multi-phase power. In one embodiment, the apparatus comprises a cycloconverter controller for determining a charge ratio based on a reference waveform; and a cycloconverter, coupled to the cycloconverter controller and to a multi-phase ac line, for selectively coupling an alternating current to each line of the multi-phase ac line based on the charge ratio.. ... Enphase Energy Inc

02/02/17 / #20170033560

Method and apparatus for controlling a load shedding device

The present invention is directed to a method and apparatus for load shedding while maintaining distributed energy resource (der) support of a power grid. In one embodiment, the method comprises monitoring, by a load shedding device that electrically couples a power grid to each of a distributed energy resource (der) and at least one load, a frequency of the power grid; determining whether the frequency is less than a load disconnect frequency threshold; and disconnecting, by the load shedding device when the frequency is less than the load disconnect frequency threshold, the at least one load from the power grid while maintaining the electrical connection between the der and the power grid.. ... Enphase Energy Inc

01/19/17 / #20170020033

Double insulated heat spreader

An apparatus for thermal management for an electric device. In one embodiment the apparatus comprises a primary heat spreader disposed within an enclosure that contains a printed circuit board (pcb) populated with at least one electrical component, wherein the primary heat spreader is thermally conductive and wherein the interior of the enclosure is at least partially filled with an encapsulating material; a secondary heat spreader coupled to an exterior face of a first wall of the enclosure, wherein the secondary heat spreader is thermally conductive; and a thermal interface coupled between the primary head spreader and the pcb, wherein the thermal interface is thermally conductive and electrically insulating.. ... Enphase Energy Inc








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