Patents

With over 141 active patent families around the world and more pending, Enphase Energy is a global leader in energy technology. We're committed to developing the most innovative tools to deliver on a vision of energy independence for all. The patents listed below are just the tip of the iceberg in our drive towards the democratization of energy management.

United States

  • D673,114 Inverter module
  • D707,632 Trunk connector
  • D708,143 Drop cable connector
  • D734,653  AC module mounting bracket
  • 5,886,890 Power-supply system involving system interconnection
  • 5,951,785 Photo-voltaic apparatus
  • 7,768,155 Method and apparatus for improved burst mode during power conversion
  • 7,796,412 Method and apparatus for converting direct current to alternating current
  • 7,817,450 Method and apparatus for resetting a silicon controlled rectifier bridge
  • 7,855,473 Apparatus for phase rotation for a three-phase AC circuit
  • 7,899,632 Method and apparatus for anti-islanding of distributed power generation systems
  • 7,916,505 Method and apparatus for a leakage energy recovery circuit
  • 7,923,983 Method and apparatus for measuring AC voltages
  • 7,925,459 Method and apparatus for determining an operating voltage for preventing photovoltaic cell reverse breakdown during power conversion
  • 7,944,083 Method and apparatus for characterizing a circuit coupled to an AC line
  • 7,986,122 Method and apparatus for power conversion with maximum power point tracking and burst mode capability
  • 7,986,539 Method and apparatus for maximum power point tracking in power conversion based on dual feedback loops and power ripples
  • 8,035,257 Method and apparatus for improved burst mode during power conversion
  • 8,076,802 Method and apparatus for distributed VAr compensation
  • 8,099,197 Method and system for distributed energy generator message aggregation
  • 8,107,516 Power line communications apparatus
  • 8,179,147 Method and apparatus for detection and control of dc arc faults
  • 8,183,852 Method and apparatus for determining AC voltage waveform anomalies
  • 8,195,414 Method and apparatus for identifying an islanding condition
  • 8,222,767 Apparatus for phase rotation for a three-phase AC circuit
  • 8,257,106 Method and apparatus for interconnecting distributed power sources
  • 8,299,776 Method and apparatus for measuring AC voltages
  • 8,319,378 Method and apparatus for improved burst mode during power conversion
  • 8,359,176 Method and apparatus for determining and operating voltage for preventing photovoltaic cell reverse breakdown during power conversion
  • 8,360,390 Method and apparatus for potting an electronic device
  • 8,411,790 Power line communications apparatus
  • 8,428,783 Method and system for distributed energy generator message aggregation
  • 8,435,056 Apparatus for coupling power generated by a photovoltaic module to an output
  • 8,456,265 Transformer
  • 8,466,582 Method and apparatus for applying an electric field to a photovoltaic element
  • 8,469,735 Mounting rail and power distribution system for use in a photovoltaic system
  • 8,492,932 Method and apparatus for improved burst mode during power conversion
  • 8,537,572 Method and apparatus for providing power conversion using an interleaved flyback converter with automatic balancing
  • 8,553,035 Method and apparatus for electrical power visualization
  • 8,581,441 Distributed inverter and intelligent gateway
  • 8,620,476 Method and apparatus for smart climate control
  • 8,626,616 Method and apparatus for managing installation information
  • 8,659,922 Photovoltaic module-mounted AC inverter
  • 8,666,561 Method and apparatus for determining a corrected monitoring voltage
  • 8,717,780 Method and apparatus for converting direct current to alternating current
  • 8,749,395 Method and apparatus for indicating a disconnection within a distributed generator
  • 8,760,895 Method and apparatus for distributed power generation
  • 8,797,767 Resonant power conversion circuit
  • 8,811,049 Method and apparatus for distributed power generation
  • 8,837,178 Method and apparatus for single-path control and monitoring of an H-bridge
  • 8,873,252 Method and apparatus for extending zero-voltage switching range in a DC to DC converter
  • 8,896,330 Method and apparatus for grid impedance detection
  • 8,937,817 Lossless commutation during operation of a power converter
  • 8,963,378 Method and apparatus for interconnecting distributed power sources
  • 8,963,923 Method and apparatus for electrical power visualization
  • 9,013,171  Method and apparatus for detecting a zero-voltage condition across four quadrant switches
  • 9,030,302 Method and apparatus for three-phase power line communications
  • 9,031,140 Method and apparatus for transmitting combined power, control and data through an isolation barrier
  • 9,048,693 Method and apparatus for detecting impairment of a solar array
  • 9,048,744 Method and apparatus for resonant converter control
  • 9,105,765 Smart junction box for photovoltaic modules
  • 9,112,417 Method and apparatus for providing power conversion using an interleaved flyback converter with automatic balancing
  • 9,112,522 Delta conversion analog to digital converter providing direct and quadrature output
  • 9,118,273 Resilient mounting assembly for photovoltaic modules
  • 9,130,570 Four quadrant bidirectional switch
  • 9,137,916 Method and apparatus for potting and electronic device
  • 9,165,275 Method and apparatus for identifying redeplyed distributed generator comonents
  • 9,184,652 Method and apparatus for inverter output current harmonic reduction
  • 9,247,595 LED Lighting Converter
  • 9,531,300 Single-phase cycloconverter with integrated line-cycle energy storage
  • 9,859,814 Method and apparatus for independent control of multiple power converter sources
  • 9,917,447 Systems and methods for synchronizing an appliance load to a local power generating capability
  • 9,817,424 Method and apparatus for maximum power point tracking for multi-input power converter 
  • 9,480,185 Double insulated heat spreader 
  • 9,793,854 Method and apparatus for ground fault detection 
  • 9,270,388 Method and apparatus for impulse noise mitigation for power line networking 
  • 8,207,637 System and apparatus for interconnecting an array of power generating assemblies 
  • 9,912,159 Method and apparatus for detection of local line phase in a multi-phase power line system 
  • 9,584,038 Ungrounded inverter enclosure and cabling 
  • 9,431,922 ARC fault protection for power conversion 
  • 9,960,707 Parallel power converter 
  • 10,003,194 Parallel battery system 
  • 10,008,854 Method and apparatus for time-domain droop control with integrated phasor current control 
  • 9,801,293 Energy storage/delivery device mounting plate
  • 10,074,474 Matrix planar transformer 
  • 8,450,985 Energy recovery circuit 
  • 8,508,964 Variable duty cycle switching with imposed delay 
  • 9,496,794 Regulation of powertrain converter circuit
  • 8,823,356 Supply voltage auto-sensing 
  • 8,767,421 Power converter bus control method, system, and article of manufacture 
  • 8,120,933 Power converter with reverse recovery avoidance 
  • 8,634,216 Communication within a power inverter using transformer voltage frequency 
  • 8,964,401 Electrical insulator casing 
  • 9,342,088 Power point tracking 
  • 9,819,182 Systemic optimization of photovoltaic apparatus 
  • 6,331,794 Phase leg with depletion-mode device 
  • 8,754,627 Multi-mode power point tracking 
  • 9,253,935 Micro-inverter solar panel mounting 
  • 7,994,657 Modular system for unattended energy generation and storage 
  • 7,663,342 Apparatus, system, and method for controlling multiple power supplies 
  • 8,423,312 Voltage-sensed system and method for anti-islanding protection of grid-connected inverters 
  • 7,755,916 Methods for minimizing double-frequency ripple power in single-phase power conditioners 
  • 9,263,895 Distributed energy conversion systems 
  • 8,796,884 Energy conversion systems with power control
  • 8,279,642 Apparatus for converting direct current to alternating current using an active filter to reduce double-frequency ripple power of bus waveform 
  • 8,482,947 Apparatus and method for controlling DC-AC power conversion 
  • 8,462,518 Power inverter docking system for photovoltaic modules 
  • D666,974 Y-junction interconnect module 
  • D644,609 Female connector 
  • D644,610 Male connector 
  • 8,279,649 Apparatus and method for controlling a power inverter 
  • 9,160,408 System and method for establishing communication with an array of inverters 
  • 8,860,242 Power-line communication coupling 
  • 9,692,319 Power system islanding detection with waveform fitting
  • 8,624,561 Power conversion having energy storage with dynamic reference 
  • 9,077,202 Power converter with series energy storage 
  • 8,842,454 Inverter array with localized inverter control
  • 9,065,354 Multi-stage power inverter for power bus communication
  • 8,611,107 Method and system for controlling a multi-stage power inverter  
  • 9,647,574 Multi-stage power inverter 
  • 8,193,788 Method and device for controlling a configurable power supply to provide AC and/or DC power output 
  • 8,599,587 Modular photovoltaic power supply assembly 
  • 8,174,856 Configurable power supply assembly 
  • 8,461,813 Method and device for controlling a configurable power supply to provide AC and/or DC power output
  • 9,263,183 Modular photovoltaic power supply assembly 
  • 8,922,185 Device and method for global maximum power point tracking 
  • 9,660,451 Islanded operation of distributed power sources 
  • 8,284,574 Method and apparatus for controlling an inverter using pulse mode control 
  • 9,276,635 Device, system, and method for communicating with a power inverter using power line communications 
  • 9,585,044 Technologies for converter topologies 
  • 9,564,835 Inverter communications using output signal 
  • 10,008,979 Integration of microinverter with photovoltaic module 
  • 8,988,096 Flash testing of photovoltaic modules with integrated electronics 
  • 9,423,448 Testing of module integrated electronics using power reversal
  • 9,136,710 Multi-path converters for PV substrings  
  • 9,547,033 Hierarchical fault prediction, detection and localization in PV systems with distributed electronics 
  • 9,906,036 Alternative source module array characterization 
  • 9,960,712 Converter topologies and control 
  • 9,281,419 Localized power point optimizer for solar cell installations 
  • 9,472,691 Device for shunting current from photovoltaic circuit near the open circuit voltage and/or disconnecting solar module of a solar system 
  • 9,680,301 Master-slave architecture for controlling operation of photovoltaic power plants 
  • 9,190,839 Circuits and methods for limiting open circuit voltage of photovoltaic strings 
  • 9,373,958 Control techniques for photovoltaic power plants 
  • 9,397,611 Photovoltaic systems with local maximum power point tracking prevention and methods for operating same
  • 9,635,783 Electronic component housing with heat sink  
  • 10,003,300 Photovoltaic management and module-level power electronics 
  • 9,882,598 Communication systems adaptable to power line communications 
  • 10,126,131 Automated photovoltaic geospatial location 
  • 9,634,723 Communication between photovoltaic devices on a shared power line 
  • 9,923,488 Soft switching technique for a grid-tied inverter 
  • 9,825,556 Converter topologies for common mode voltage reduction 
  • 9,954,462 Converter topologies and control 
  • 10,050,561 Three-level inverter switching 
  • 10,141,868 Method and apparatus for resonant power conversion 
  • 10,126,721 Method and apparatus for activation and deactivation of power conditioners in distributed resource island systems using low voltage AC 
  • 10,250,184 Enhanced solar panels, liquid delivery systems and associated processes for solar energy systems 
  • 10,248,113 Alerting system 
  • 10,230,325 Remote array mapping
  • 10,218,362 Method and apparatus for substation fingerprinting 
  • 10,216,158 Heating, ventilation and air conditioning capacity monitor 
  • 10,211,631 Voltage clipping 

More information is available at uspto.gov.

Australia

  • 2007229854 Method and apparatus for converting direct current to alternating current
  • 2008254814 Distributed inverter and intelligent gateway
  • 2008254822 Photovoltaic module-mounted AC inverter
  • 2008254828 Photovoltaic AC inverter mount and interconnect
  • 2009322282 Mounting rail and power distribution system for use in a photovoltaic
  • 2010201291 Apparatus for coupling power generated by a photovoltaic module to an output
  • 2010271405 Method and apparatus for single-path control and monitoring of an H-
  • 2010273590 Method and apparatus for identifying redeployed distributed generator components
  • 2010284373 Method and apparatus for distributed energy generator message
  • 2010286576 Power line communications apparatus
  • 2011202022 Method and apparatus for converting direct current to alternating current
  • 2011203367 Distributed inverter and intelligent gateway
  • 2011235110 Method and apparatus for managing installation information
  • 2011207434 Method and apparatus for interconnecting distributed power sources
  • 2011240594 Improved transformer
  • 2011250957 Lossless communication during operation of power converter
  • 2012203475 Photovoltaic module-mounted AC inverter
  • 2013267001 Method and apparatus for converting direct current to alternating current
  • 2014201681 Method and apparatus for distributed energy generator message
  • 2009302200 Method and apparatus for improved burst mode during power conversion
  • 2012262169 Method and apparatus for grid impedance detection
  • 2013221272 Method and apparatus for three-phase power line communications
  • 2014240283 Method and apparatus for ground fault detection
  • 2012322789 Electrical insulator casing
  • 2011316727 Apparatus and method for controlling a power inverter
  • 2011336974 Inverter array with localized inverter control
  • 2013284458 Device, system, and method for communicating with a power inverter using power line communications
  • 2014237119 Inverter communications using output signal
  • 2008233230 Localized power point optimizer for solar cell installations
  • 2012328766 Master-slave architecture for controlling operation of photovoltaic power plants
  • 2012355665 Circuits and methods for limiting open circuit voltage of photovoltaic strings
  • 2012374044 Control techniques for photovoltaic power plants
  • 2012375214 Photovoltaic systems with local maximum power point tracking prevention and methods for operating same
  • 2013239955 Electronic component housing with heat sink

Canada

  • 2717564 Method and apparatus for a leakage energy recovery circuit
  • 2715340 Method and apparatus for distributed var compensation
  • 2745337 Mounting rail and power distribution system for use in a photovoltaic
  • 2719002 Methos and apparatus for extending zero-voltage switching range in a DC to DC Converter

China

  • 2010800284569 Method and system for distributed energy generator message
  • 1683840 Method and apparatus for identifying redeployed distributed generator
  • 1554855 Power line communicatons apparatus
  • 1685864 Method and apparatus for interconnecting distributed power sources
  • 2011800318150 Method for operating a DC-DC converter
  • 1747404 Method and apparatus for power converter input voltage regulation
  • ZL2012800044085 Method and apparatus for resonant converter control

European Patent Convention

  • 02133652000199 Inverter module
  • 1837985 Method and apparatus for converting direct current to alternating current
  • 2471190 Power line communications apparatus
  • 2457313 Method and apparatus for detection and control of DC arc faults
  • 2741388 Method and apparatus for detection and contril of DC arc faults

France

  • 1837985 Method and apparatus for converting direct current to alternating current
  • 2457313 Method and apparatus for detection and control of DC arc faults
  • 2471190 Power line communications apparatus
  • 2741388 Method and apparatus for detection of control of DC arc faults
  • 2345133 Method and apparatus for determining an operating voltage to prevent reverse photovoltaic cell breakdown during power conversion
  • 2815517 Communication method and apparatus for three-phase power line
  • 2198505 Methods for minimizing dual frequency wave current in single phase current conditioners

Germany

  • 6020070354897 Method and apparatus for converting direct current to alternating current
  • 2471190 Power line communications apparatus
  • 6020100140822 Method and apparatus for detection and control of DC arc faults
  • 2741388 Method and apparatus for detection and control of DC arc faults
  • 2345143 Method and apparatus for improved burst mode during power conversion
  • 2345133 Method and apparatus for determining an operating voltage to prevent reverse photovoltaic cell breakdown during power conversion
  • 2815517 Method and apparatus for three-phase power line communications
  • 2198505 Methods for minimizing double-frequency ripple power in single phase current conditioners
  • 2460243 Apparatus and method for controlling DC-AC power conversion
  • 2489078 Power inverter docking system for photovoltaic modules
  • 3149827 Inverter array characterization 
  • 2795681 Circuits and methods for limiting open circuit voltage of photovoltaic strings
  • 2831921 Photovoltaic systems with local maximum power point tracking prevention and methods for operating same
  • 2831925 Electronic component housing with heat sink

Israel

  • 202,197 System and appartatus for use in energy conversion

Japan

  • 5,259,108 Method and apparatus for converting direct current to alternating current
  • 5,455,184 Method and apparatus for power conversion with maximum power point tracking and burst mode capability
  • 5,459,634 Method and apparatus for maximum power point tracking in power conversion based on dual feedback loops and power ripples
  • 5,524,335 Method and apparatus for detection and control of DC arc faults
  • 5,550,725 Method and apparatus for identifying redeployment distributed generator components
  • 5,562,422 Power line communication apparatus
  • 5,654,982 Method and apparatus for extending zero-voltage switching range in A
  • 5,737,660 Method and apparatus for interconnecting distributed power sources
  • 5,754,823 Lossless communication during operation of a power converter
  • 5,773,368 Method and apparatus for improved burst mode during power
  • 5,804,609 Improved transformer
  • 5,987,903 Method and apparatus for grid impedance detection
  • 6,112,369 Method and apparatus for three-phase power line communications
  • 6,351,120 System and method for a mesh power system
  • 6,357,679 Method and apparatus for ground fault detection
  • 3,357,808 Solar battery equipment
  • 5,747,504 Methods for minimizing double-frequency ripple power in single-phase power conditioners
  • 5,621,094 Localized power point optimizer for solar cell installations 
  • 6,205,658 Master-slave architecture for controlling operation of photovoltaic power plants
  • 6,299,028 Circuits and methods for limiting open circuit voltage of photovoltaic strings
  • 6,140,803 Control techniques for photovoltaic power plants 
  • 6,181,148 Photovoltaic systems with local maximum power point tracking prevention and methods for operating same
  • 6,209,790 Electronic component housing with heat sink  
  • 2,017,502,490 System, method, and computer program product for controlling voltage of DC power sources and bypassing series-connected power sources

Republic of Korea

  • 101197807 Method and apparatus for measuring AC voltages
  • 101535589 Distributed inverter and intelligent gateway
  • 101245080 Method and apparatus for extending zero-voltage switching range in a DC to DC converter
  • 101664274 Power line communications apparatus
  • 101577594 Photovoltaic module-mounted AC inverter
  • 1580207 Photovoltaic module-mounted AC inverter
  • 101520981Localized power point optimizer for solar cell installations 
  • 10-2016-0099560 System, method, and computer program product for controlling voltage of DC power sources and bypassing series-connected power sources

United Kingdom

  • 1837985 Method and apparatus for converting direct current to alternating current
  • 2471190 Power line communications apparatus
  • 2457313 Method and apparatus for detection and control of DC arc faults
  • 2741388 Method and apparatus for detection and control of DC arc faults