Unfolder-based single-stage AC-AC conversion system

Teeneti, Chakridhar Reddy; Zane, Regan A.; Wang, Hongjie; Yelaverthi, Dorai Babu

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
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C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
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E05 - locks
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F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
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F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
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F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
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F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
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H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

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Title: Unfolder-based single-stage AC-AC conversion system

Abstract

An power converter includes an unfolder connected to a three-phase source and has an output connection with a positive terminal, a negative terminal and a neutral terminal. The unfolder creates two unipolar piece-wise sinusoidal DC voltage waveforms offset by a half of a period. A three-input converter connected to the unfolder produces a quasi-sinusoidal output voltage across output terminals. Switches of the converter selectively connect the positive, negative and neutral inputs across the output terminals. A PWM controller controls a first duty ratio and a second duty ratio for the converter based on a phase angle of the source and a modulation index generated from an error signal related to a control variable. The duty ratios are time varying with a fundamental frequency of the source. The modulation index relates to output voltage of the converter, peak voltage or current of the source and/or peak current at the output terminals.

Inventors:: Teeneti, Chakridhar Reddy; Zane, Regan A.; Wang, Hongjie; Yelaverthi, Dorai Babu

Issue Date:: Tue May 09 00:00:00 EDT 2023

Research Org.:: Utah State Univ., Logan, UT (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1998367

Patent Number(s):: 11646671

Application Number:: 17/499,735

Assignee:: Utah State University (Logan, UT)

Patent Classifications (CPCs):: H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

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H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
H02M1/4216 - {operating from a three-phase input voltage
H02M3/33569 - {having several active switching elements
H02M5/225 - {comprising two stages of AC-AC conversion, e.g. having a high frequency intermediate link}
H02M5/4585 - {having a rectifier with controlled elements}
H02M7/487 - Neutral point clamped inverters
H02M7/527 - by pulse width modulation
H02M7/5395 - by pulse-width modulation

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
Y02B70/10 - Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/70 - Energy storage for electromobility
Y02T10/7072 - Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Y02T90/14 - Plug-in electric vehicles

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DOE Contract Number:: EE0008803

Resource Type:: Patent

Resource Relation:: Patent File Date: 10/12/2021

Country of Publication:: United States

Language:: English

Citation Formats


                    Teeneti, Chakridhar Reddy, Zane, Regan A., Wang, Hongjie, and Yelaverthi, Dorai Babu. Unfolder-based single-stage AC-AC conversion system.  United States: N. p., 2023. 
        Web.

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                    Teeneti, Chakridhar Reddy, Zane, Regan A., Wang, Hongjie, & Yelaverthi, Dorai Babu. Unfolder-based single-stage AC-AC conversion system.  United States.

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                    Teeneti, Chakridhar Reddy, Zane, Regan A., Wang, Hongjie, and Yelaverthi, Dorai Babu. Tue .  
        "Unfolder-based single-stage AC-AC conversion system".  United States.  https://www.osti.gov/servlets/purl/1998367.

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@article{osti_1998367,

  title        = {Unfolder-based single-stage AC-AC conversion system},

  author       = {Teeneti, Chakridhar Reddy and Zane, Regan A. and Wang, Hongjie and Yelaverthi, Dorai Babu},

  abstractNote = {An power converter includes an unfolder connected to a three-phase source and has an output connection with a positive terminal, a negative terminal and a neutral terminal. The unfolder creates two unipolar piece-wise sinusoidal DC voltage waveforms offset by a half of a period. A three-input converter connected to the unfolder produces a quasi-sinusoidal output voltage across output terminals. Switches of the converter selectively connect the positive, negative and neutral inputs across the output terminals. A PWM controller controls a first duty ratio and a second duty ratio for the converter based on a phase angle of the source and a modulation index generated from an error signal related to a control variable. The duty ratios are time varying with a fundamental frequency of the source. The modulation index relates to output voltage of the converter, peak voltage or current of the source and/or peak current at the output terminals.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue May 09 00:00:00 EDT 2023},

  month        = {Tue May 09 00:00:00 EDT 2023}

}

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Works referenced in this record:

Modulation Method and Control Strategy for Full-Bridge-Based Swiss Rectifier to Achieve ZVS Operation and Suppress Low-Order Harmonics of Injected Current
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Zhang, Binfeng; Xie, Shaojun; Wang, Xincheng
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Quasi-single stage power converter topology
patent, February 2021

Yelaverthi, Dorai Babu; Zane, Regan A.
US Patent Document 10,917,019
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/10917019