Inventor · disambiguated record
Donald Richard Zimmanck
Also filed as: ZIMMANCK DONALD RICHARD
44 granted patents·7 pending applications·89 citations·filing 2011–2024
97Inventor score
Top patents by PatentIndex Score
51 records- 0194US10008854B2Method and apparatus for time-domain droop control with integrated phasor current controlENPHASE ENERGY INC·Filed 2016·Granted Jun 26, 2018·9 cites·20 claims
- 0290US9531300B2Single phase cycloconverter with integrated line-cycle energy storageENPHASE ENERGY INC·Filed 2014·Granted Dec 27, 2016·10 cites·20 claims
- 0389US11133675B2Method and apparatus for synchronizing start-up of grid-forming invertersENPHASE ENERGY INC·Filed 2021·Granted Sep 28, 2021·2 cites·20 claims
- 0489US9130570B2Four quadrant bidirectional switchFORNAGE MARTIN·Filed 2012·Granted Sep 8, 2015·10 cites·20 claims
- 0587US8937817B2Lossless commutation during operation of a power converterFORNAGE MARTIN·Filed 2011·Granted Jan 20, 2015·7 cites·20 claims
- 0686US11031794B2Autonomous charge balancing of distributed AC coupled batteries with droop offsetENPHASE ENERGY INC·Filed 2019·Granted Jun 8, 2021·3 cites·20 claims
- 0786US9444367B2Method and apparatus for generating single-phase power from a three-phase resonant power converterFORNAGE MARTIN·Filed 2012·Granted Sep 13, 2016·8 cites·17 claims
- 0885US8456265B2TransformerFORNAGE MARTIN·Filed 2011·Granted Jun 4, 2013·6 cites·14 claims
- 0982US9948204B2Method and apparatus for controlling resonant converter output powerFORNAGE MARTIN·Filed 2012·Granted Apr 17, 2018·5 cites·18 claims
- 1081US9031140B2Method and apparatus for transmitting combined power, control and data through an isolation barrierENPHASE ENERGY INC·Filed 2012·Granted May 12, 2015·5 cites·18 claims
- 1180US11289910B2Method and apparatus for impedance matching in virtual impedance droop controlled power conditioning unitsENPHASE ENERGY INC·Filed 2020·Granted Mar 29, 2022·1 cites·20 claims
- 1279US11201469B2Method and apparatus for automatic interleaving of cycled loads in a microgridENPHASE ENERGY INC·Filed 2020·Granted Dec 14, 2021·1 cites·20 claims
- 1378US10126721B2Method and apparatus for activation and de-activation of power conditioners in distributed resource island systems using low voltage ACENPHASE ENERGY INC·Filed 2016·Granted Nov 13, 2018·3 cites·18 claims
- 1478US9479082B2Method and apparatus for resonant power conversionFORNAGE MARTIN·Filed 2012·Granted Oct 25, 2016·4 cites·17 claims
- 1577US11073807B2Method and apparatus for activation and de-activation of power conditioners in distributed resource island systems using low voltage ACENPHASE ENERGY INC·Filed 2020·Granted Jul 27, 2021·1 cites·20 claims
- 1671US11594897B2Autonomous charge balancing of distributed AC coupled batteries with droop offsetENPHASE ENERGY INC·Filed 2021·Granted Feb 28, 2023·0 cites·20 claims
- 1771US11355936B2Method and apparatus for time-domain droop control with integrated phasor current controlENPHASE ENERGY INC·Filed 2021·Granted Jun 7, 2022·0 cites·20 claims
- 1871US10511178B2Autonomous charge balancing of distributed AC coupled batteries with droop offsetENPHASE ENERGY INC·Filed 2016·Granted Dec 17, 2019·1 cites·20 claims
- 1970US9450500B2Method and apparatus for modulating lower powers in resonant convertersENPHASE ENERGY INC·Filed 2013·Granted Sep 20, 2016·2 cites·20 claims
- 2070US9444355B2Method and apparatus for determining a bridge mode for power conversionENPHASE ENERGY INC·Filed 2014·Granted Sep 13, 2016·2 cites·17 claims
- 2169US11190016B2Method and apparatus for increased energy harvest in a microgridENPHASE ENERGY INC·Filed 2021·Granted Nov 30, 2021·0 cites·20 claims
- 2268US11146068B2Method and apparatus for minimizing circulating currents in microgridsENPHASE ENERGY INC·Filed 2021·Granted Oct 12, 2021·0 cites·20 claims
- 2368US10903654B2Method and apparatus for minimizing circulating currents in microgridsENPHASE ENERGY INC·Filed 2016·Granted Jan 26, 2021·1 cites·20 claims
- 2468US10516270B2Method and apparatus for coordination of generators in droop controlled microgrids using hysteresisENPHASE ENERGY INC·Filed 2017·Granted Dec 24, 2019·1 cites·20 claims
- 2567US12261441B2Methods and apparatus for discharge protection in a storage systemENPHASE ENERGY INC·Filed 2023·Granted Mar 25, 2025·0 cites·14 claims
- 2667US10635059B2Method and apparatus for activation and de-activation of power conditioners in distributed resource island systems using low voltage ACENPHASE ENERGY INC·Filed 2018·Granted Apr 28, 2020·1 cites·20 claims
- 2767US9013171B2Method and apparatus for detecting a zero-voltage condition across four quadrant switchesENPHASE ENERGY INC·Filed 2012·Granted Apr 21, 2015·2 cites·20 claims
- 2865US10996704B2Method and apparatus for control of intelligent loads in microgridsENPHASE ENERGY INC·Filed 2016·Granted May 4, 2021·1 cites·20 claims
- 2965US9379627B2Power conversion circuit arrangements utilizing resonant alternating current linkageENPHASE ENERGY INC·Filed 2014·Granted Jun 28, 2016·1 cites·16 claims
- 3063US10916942B2Method and apparatus for increased energy harvest in a microgridENPHASE ENERGY INC·Filed 2019·Granted Feb 9, 2021·0 cites·20 claims
- 3163US2021325922A1Method and apparatus for control of intelligent loads in microgridsENPHASE ENERGY INC·Filed 2021·Application pending·0 cites
- 3262US11594951B2Method and apparatus for rapid shutdown of islandable inverters using open circuit detectionENPHASE ENERGY INC·Filed 2021·Granted Feb 28, 2023·0 cites·18 claims
- 3360US11509137B2Voltage and current management in three-phase interconnected power systems using positive and negative sequence secondary controlENPHASE ENERGY INC·Filed 2020·Granted Nov 22, 2022·0 cites·17 claims
- 3460US10951037B2Method and apparatus for time-domain droop control with integrated phasor current controlENPHASE ENERGY INC·Filed 2018·Granted Mar 16, 2021·0 cites·20 claims
- 3560US10079557B2Efficient resonant topology for DC-AC inversion with minimal use of high frequency switchesENPHASE ENERGY INC·Filed 2014·Granted Sep 18, 2018·1 cites·20 claims
- 3660US2020127459A1Method and apparatus for coordination of generators in droop controlled microgrids using hysteresisENPHASE ENERGY INC·Filed 2019·Application pending·0 cites
- 3759US9048744B2Method and apparatus for resonant converter controlFORNAGE MARTIN·Filed 2012·Granted Jun 2, 2015·1 cites·20 claims
- 3858US2024146089A1Storage system configured for use with an energy management systemENPHASE ENERGY INC·Filed 2023·Application pending·0 cites
- 3957US11398731B2Method and apparatus for balancing loads on split-phase islanded systemsENPHASE ENERGY INC·Filed 2021·Granted Jul 26, 2022·0 cites·20 claims
- 4057US10141868B2Method and apparatus for resonant power conversionENPHASE ENERGY INC·Filed 2016·Granted Nov 27, 2018·0 cites·20 claims
- 4156US10431980B2Method and apparatus for increased energy harvest in a microgridENPHASE ENERGY INC·Filed 2017·Granted Oct 1, 2019·0 cites·20 claims
- 4256US2024339849A1Storage system configured for use with an energy management systemENPHASE ENERGY INC·Filed 2024·Application pending·0 cites
- 4355US10707681B2Method and apparatus for impedance matching in virtual impedance droop controlled power conditioning unitsENPHASE ENERGY INC·Filed 2016·Granted Jul 7, 2020·0 cites·20 claims
- 4455US2024186808A1Storage system configured for use with an energy management systemENPHASE ENERGY INC·Filed 2023·Application pending·0 cites
- 4554US11979023B2Method and apparatus for relative value generation of resources based on knapsack algorithmsENPHASE ENERGY INC·Filed 2021·Granted May 7, 2024·0 cites·20 claims
- 4654US2015124493A1Lossless commutation during operation of a power converterENPHASE ENERGY INC·Filed 2014·Application pending·0 cites
- 4752US11539217B2Method and apparatus for tertiary control of microgrids with integrated over-current protectionENPHASE ENERGY INC·Filed 2020·Granted Dec 27, 2022·0 cites·20 claims
- 4851US8797767B2Resonant power conversion circuitFORNAGE MARTIN·Filed 2012·Granted Aug 5, 2014·0 cites·7 claims
- 4947US11966242B2Method and apparatus for load control in a power systemENPHASE ENERGY INC·Filed 2020·Granted Apr 23, 2024·0 cites·20 claims
- 5047US10707775B2Method and apparatus for multi phase shift power converter controlENPHASE ENERGY INC·Filed 2014·Granted Jul 7, 2020·0 cites·17 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →