CN114080748A - 变换器的控制方法、变换器及光伏发电*** - Google Patents

变换器的控制方法、变换器及光伏发电*** Download PDF

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Publication number
CN114080748A
CN114080748A CN202080005595.3A CN202080005595A CN114080748A CN 114080748 A CN114080748 A CN 114080748A CN 202080005595 A CN202080005595 A CN 202080005595A CN 114080748 A CN114080748 A CN 114080748A
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voltage
output
converter
interval
photovoltaic
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CN202080005595.3A
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CN114080748B (zh
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顾桂磊
徐志武
王雨
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Huawei Digital Power Technologies Co Ltd
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Huawei Digital Power Technologies Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077—Plural converter units whose outputs are connected in series
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)
  • Photovoltaic Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

光伏发电***中的变换器及其控制方法。变换器(20)的输入端连接至少一个光伏组件(10)，且输出端连接逆变器(300)。控制方法包括：根据光伏组件(10)的输出功率和电压的PV曲线确定变换器(20)的输出PV曲线；根据输出PV曲线控制变换器(20)的电压输出；其中，输出PV曲线至少包括相连接的模拟限压区间和恒功率区间；模拟限压区间是指区间内任意一点所对应的变换器(20)输出电压与光伏组件(10)的输出电压成比例且比例系数相同；恒功率区间是指区间内任意两点所对应的输出电压不同，且区间内任意两点所对应的输出功率之间的差值小于第一预设阈值。该控制方法能够在实现限压输出的同时适配逆变器(300)已有的MPPT控制策略，避免光伏组串(100)功率掉零的情况发生。

Description

PCT国内申请，说明书已公开。

Claims (21)

  1. PCT国内申请，权利要求书已公开。
CN202080005595.3A 2020-06-18 2020-06-18 变换器的控制方法、变换器及光伏发电*** Active CN114080748B (zh)

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EP (1) EP3965278A4 (zh)
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Cited By (1)

* Cited by examiner, † Cited by third party
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CN113452074A (zh) * 2021-06-29 2021-09-28 华为技术有限公司 一种光伏***及控制方法

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US11862981B2 (en) 2020-06-18 2024-01-02 Huawei Digital Power Technologies Co., Ltd. Photovoltaic system and control method

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CN113452074B (zh) * 2021-06-29 2024-04-09 华为数字能源技术有限公司 一种光伏***及控制方法

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US11994893B2 (en) 2024-05-28
JP7308360B2 (ja) 2023-07-13
AU2020454270A1 (en) 2022-04-28
AU2020454270B2 (en) 2023-06-22
JP2022551296A (ja) 2022-12-08
CN114080748B (zh) 2023-12-08
WO2021253352A1 (zh) 2021-12-23
US20220206522A1 (en) 2022-06-30
EP3965278A1 (en) 2022-03-09
EP3965278A4 (en) 2022-10-19
CN117856321A (zh) 2024-04-09

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