公开(公告)号：US20240348150A1

公开(公告)日：2024-10-17

申请号：US18609442

申请日：2024-03-19

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON

IPC: H02M1/088 ,  H02M7/5387

CPC classification number: H02M1/088 ,  H02M7/5387

Abstract: A bridge configured for use with a power converter is provided herein and comprises a switch comprising a Gallium-Nitride (GaN) High Electron Mobility Transistor and a Gate driver coupled to the Gallium-Nitride (GaN) High Electron Mobility Transistor and configured to provide a turn on signal to the Gallium-Nitride (GaN) High Electron Mobility Transistor at a first time so that the Gallium-Nitride (GaN) High Electron Mobility Transistor turns on at a second time that is different from the first time.

公开(公告)号：US20230155521A1

公开(公告)日：2023-05-18

申请号：US17979210

申请日：2022-11-02

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON

IPC: H02M7/797 ,  H02M1/36 ,  H02M1/08

CPC classification number: H02M7/797 ,  H02M1/36 ,  H02M1/08 ,  H02J3/381

Abstract: A microinverter is provided herein and comprises DC side MOSFETs connected to an input side of the microinverter, AC side MOSFETs connected to an output of the microinverter, and a plurality of gate drivers connected to the AC side MOSFETs and configured to automatically drive the microinverter without a DC voltage being applied to the input side of the microinverter.

公开(公告)号：US20240387096A1

公开(公告)日：2024-11-21

申请号：US18634292

申请日：2024-04-12

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON ,  Tyrone David LOW

IPC: H01F27/28 ,  H01F30/10 ,  H01F38/08 ,  H01F38/42 ,  H01F41/10

Abstract: The present disclosure provides a transformer configured for use with a power converter of an energy management system. For example, the transformer comprises an adjustable flux-shunt configured to be positioned onto an inner round limb of a core half and rotated around the inner round limb to obtain an adequate leakage inductance corresponding to a set position of the adjustable flux-shunt.

公开(公告)号：US20240283347A1

公开(公告)日：2024-08-22

申请号：US18413743

申请日：2024-01-16

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON

IPC: H02M1/00 ,  G01R15/18 ,  G01R19/25 ,  H01F27/42

CPC classification number: H02M1/0009 ,  G01R15/18 ,  H01F27/427 ,  G01R19/25

Abstract: An apparatus configured for use with a microinverter of an energy management system is provided. For example, apparatus can comprise a cascaded current transformer configuration comprising a first current transformer having a first primary winding configured to couple to a secondary winding of a power transformer of the microinverter and having a first secondary winding coupled to a second primary winding of a second current transformer having a second secondary winding coupled to a measurement device configured to measure a current of the microinverter.

公开(公告)号：US20230217829A1

公开(公告)日：2023-07-06

申请号：US18093020

申请日：2023-01-04

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON

IPC: H10N30/40 ,  H02M1/00 ,  H10N30/80 ,  H02M5/12

CPC classification number: H10N30/40 ,  H02M1/0009 ,  H10N30/804 ,  H02M5/12 ,  H02M1/007

Abstract: A method and apparatus for converting power comprising an input bridge having an input adapted for coupling to a DC source, a piezoelectric transformer having an input coupled to an output of the input bridge, and an output bridge having an input coupled to an output of the piezoelectric transformer and an output adapted to couple to a load. A trajectory controller, coupled to the input bridge and output bridge, (1) measures current and voltage in the input bridge, the output bridge or both, (2) measures a current into or out of the piezoelectric transformer, (3) determines switch timing for control signals for the input bridge and output bridge based upon the measured current and/or voltage, and (4) applies the control signals to the input bridge and output bridge.

公开(公告)号：US20240339923A1

公开(公告)日：2024-10-10

申请号：US18603968

申请日：2024-03-13

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON

IPC: H02M1/088 ,  H02M3/335

CPC classification number: H02M1/088 ,  H02M3/33573 ,  H02M3/33584

Abstract: A cycloconverter configured for use with a power converter is provided herein and comprises a bidirectional switch comprising a pair of Gallium-Nitride (GaN) High Electron Mobility Transistors and a Gate driver coupled to a gate of each of the pair of Gallium-Nitride (GaN) High Electron Mobility Transistors and configured to provide at least one of independent turn-on and turn-off outputs for implementing asymmetrical Gate drive characteristics, a voltage regulated supply to determine a gate turn-on voltage, and a gate turn-off voltage supply that can sink and source current.

公开(公告)号：US20240178764A1

公开(公告)日：2024-05-30

申请号：US18387518

申请日：2023-11-07

Applicant: Enphase Energy, Inc.

Inventor： Damon Charles CAYFORD ,  Michael J. HARRISON ,  Rick SANDERS

IPC: H02M7/537 ,  H02M7/48

CPC classification number: H02M7/537 ,  H02M7/4815

Abstract: A cycloconverter configured for use with a power converter is provided herein and comprises a bidirectional switch operable in a first mode of operation when an AC mains voltage is equal to or greater than a predetermined voltage and a second mode of operation when the AC mains voltage is less than the predetermined voltage, such that during zero voltage switching (ZVS) commutations a first Gate of a first pair of Gallium-Nitride (GaN) High Electron Mobility Transistors is on, a second Gate of the first pair of Gallium-Nitride (GaN) High Electron Mobility Transistors is off, and the first Gate and the second Gate of a second pair of Gallium-Nitride (GaN) High Electron Mobility Transistors are off.

公开(公告)号：US20240055971A1

公开(公告)日：2024-02-15

申请号：US18230011

申请日：2023-08-03

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON

IPC: H02M1/00 ,  H02M7/537

CPC classification number: H02M1/0009 ,  H02M7/537

Abstract: An apparatus for measuring current in a power converter is provided. The apparatus comprises a state space observer configured to provide a statistically most probable state of the power converter and an analog digital converter comprising a comparator configured to compare a first state space observer current approximation to a real time current input signal to determine if the first state space observer current approximation is too high or too low and a counter configured to be incremented or decremented based on a result of a comparison at the comparator, wherein an output of the counter is input to the state space observer and added to the first state space observer current approximation to calculate a second state space observer current approximation that will be one count closer to a final correct value.

公开(公告)号：US20220084747A1

公开(公告)日：2022-03-17

申请号：US17466452

申请日：2021-09-03

Applicant: Enphase Energy, Inc.

Inventor： Michael J. HARRISON

IPC: H01F41/098 ,  C25D3/40 ,  C25D7/06

Abstract: Methods and apparatus for producing helix windings used for a transformer are provided. For example, apparatus comprise an electrically conductive mandrill comprising an elongated body, a head comprising an eyelet detail, and a winding structure disposed along the elongated body.