Petaluma, CA, United States
Petaluma, CA, United States

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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.


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.


Patent
Enphase Energy | Date: 2017-01-31

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.


Patent
Enphase Energy | Date: 2016-11-21

System and apparatus for electrically coupling a microgrid to and from a power distribution grid. In one embodiment, the apparatus comprises an interconnect device, coupled to the microgrid and the power distribution grid, comprising (i) an overcurrent protection component (OPC) for interrupting a circuit during an overcurrent condition; and (2) a contactor component, coupled in series with the OPC and independently operable from the OPC, comprising (a) a set of contacts movable between a first position and a second position; (b) a first coil energizable to move the set of contacts from the first position into the second position; and (c) a second coil energizable, independently of the first coil, to maintain the contacts in the second position after the first coil is de-energized until a level of current flowing through the set of contacts is less than a lower current level.


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.


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.


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.


An apparatus for mechanically coupling a power conditioner to a photovoltaic (PV) module frame. In one embodiment, the apparatus comprises: a bracket, adapted for mechanically coupling the power conditioner to the PV module frame, comprising at least one inner-flange tab and at least one outer-flange tab for trapping a flange of the PV module frame between them; and at least one self-locking mounting structure for locking the bracket to the PV module frame without requiring any holes in the PV module frame.


Patent
Enphase Energy | Date: 2016-01-20

Apparatus and method for controlling reactive power. In one embodiment, the apparatus comprises a bidirectional power converter comprising a switched mode cycloconverter for generating AC power having a desired amount of a reactive power component.


Patent
Enphase Energy | Date: 2016-01-20

Apparatus and system for powering an isolated gate driver. In one embodiment, the apparatus comprises a gate driver power supply unit (PSU), coupled to a transistor and to an isolated gate driver that couples control signals to the transistor, for (i) harnessing energy from commutation action across the transistor, and (ii) using the harnessed energy to power the isolated gate driver.

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