JP7425633B2 - 周波数変換器の制御装置ならびに制御方法、及び可変速揚水発電システムの制御装置 - Google Patents
周波数変換器の制御装置ならびに制御方法、及び可変速揚水発電システムの制御装置 Download PDFInfo
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- JP7425633B2 JP7425633B2 JP2020041670A JP2020041670A JP7425633B2 JP 7425633 B2 JP7425633 B2 JP 7425633B2 JP 2020041670 A JP2020041670 A JP 2020041670A JP 2020041670 A JP2020041670 A JP 2020041670A JP 7425633 B2 JP7425633 B2 JP 7425633B2
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- 238000010248 power generation Methods 0.000 title description 14
- 238000000034 method Methods 0.000 title description 5
- 239000003990 capacitor Substances 0.000 claims description 76
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000010354 integration Effects 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 238000004146 energy storage Methods 0.000 description 11
- 230000001629 suppression Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
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- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
-
- 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
- H02M1/36—Means for starting or stopping converters
-
- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4833—Capacitor voltage balancing
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Description
本実施例によりこの発明が限定されるものではない。
Claims (4)
- 同期機を含む回転機を電力系統に連系させる周波数変換器の制御装置であって、
前記周波数変換器は、コンデンサを並列接続する単位変換器が複数直列接続されて直列接続の一方端が交流の各相に接続され、直列接続の他方端が直流の端子に接続されるアームを複数組備えて形成され、
制御装置は、少なくとも前記アームを構成する複数の単位変換器における前記コンデンサの電圧を検知してコンデンサ電圧から直流分を抽出入力する交流電圧除去演算部と、アーム電圧指令値を生成するアーム電圧指令生成部と、キャリア信号を生成するキャリア信号生成部と、前記アーム電圧指令生成部が与える前記アーム電圧指令値を補正する変調波生成器と、補正後の前記アーム電圧指令値と前記キャリア信号を用いて、前記各アーム内の複数の前記単位変換器の夫々のゲート指令を定めるゲートパルス生成部とを備え、前記アームを構成する複数単位変換器内の直流電圧検出器から得られる前記コンデンサ電圧を前記交流電圧除去演算部に入力し、その出力を前記変調波生成器に入力し、前記変調波生成器は前記交流電圧除去演算部を通過後のコンデンサ電圧が前記アームのコンデンサ電圧のアーム平均電圧に追従するような補正電圧指令値を演算し、前記アーム電圧指令値を補正することで前記コンデンサ電圧の大きさがばらつかないようにすることを特徴とする周波数変換器の制御装置。 - 請求項1に記載の周波数変換器の制御装置であって、
前記交流電圧除去演算部は、第一の回転位相角しきい値θth1で積算開始し、第二の回転位相角しきい値θth2で積算終了する積算回数を演算し、積算期間中のコンデンサ電圧の積算電圧を出力し、この積算電圧を積算回数で除して、所望の期間の単位変換器の平均電圧を演算し、前記コンデンサ電圧に含まれる交流周波数成分を取り除くように構成することを特徴とする周波数変換器の制御装置。 - 請求項1または請求項2に記載の周波数変換器の制御装置であって、
前記キャリア信号生成部は、回転機の回転周波数によって電力変換装置に与えるキャリア周波数を決定するキャリア信号生成部を備え、前記回転機の回転周波数が規定値以下となる運転領域では、周波数変換器をPWM駆動するためのパルス数を増加させることでコンデンサ電圧の電圧アンバランスを回避する機能を備えることを特徴とする周波数変換器の制御装置。 - 請求項3に記載の周波数変換器の制御装置であって、
前記キャリア信号生成部は、前記回転機の回転角周波数が定格回転角周波数の80%より小さい運転領域で運転する場合は、周波数変換器をPWM駆動するためのパルス数を増加させるように動作する機能を備えることを特徴とする周波数変換器の制御装置。
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JP2020041670A JP7425633B2 (ja) | 2020-03-11 | 2020-03-11 | 周波数変換器の制御装置ならびに制御方法、及び可変速揚水発電システムの制御装置 |
EP21768252.5A EP4120542A4 (en) | 2020-03-11 | 2021-03-09 | CONTROL DEVICE AND CONTROL METHOD FOR FREQUENCY CONVERTER AND CONTROL DEVICE FOR A HYDROELECTRICITY SYSTEM WITH A PUMPED STORAGE WITH VARIABLE SPEED |
PCT/JP2021/009251 WO2021182460A1 (ja) | 2020-03-11 | 2021-03-09 | 周波数変換器の制御装置ならびに制御方法、及び可変速揚水発電システムの制御装置 |
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CN118591979A (zh) * | 2022-01-20 | 2024-09-03 | 日立三菱水力株式会社 | 可变速同步发电电动装置 |
WO2024150437A1 (ja) * | 2023-01-13 | 2024-07-18 | 日立三菱水力株式会社 | モジュラー・マルチレベル電力変換器 |
WO2024154308A1 (ja) * | 2023-01-19 | 2024-07-25 | 日立三菱水力株式会社 | モジュラー・マルチレベル電力変換器 |
CN117869168A (zh) * | 2024-01-30 | 2024-04-12 | 四川水利职业技术学院 | 一种小型水电站调速器油泵直流改造方法 |
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WO2015102060A1 (ja) | 2014-01-06 | 2015-07-09 | 三菱電機株式会社 | 電力変換装置 |
JP2019068678A (ja) | 2017-10-04 | 2019-04-25 | 株式会社日立製作所 | 電力変換装置、その制御装置および制御方法、並びに発電システム |
JP2019075844A (ja) | 2017-10-12 | 2019-05-16 | 株式会社日立製作所 | 電力変換装置 |
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JP5775033B2 (ja) * | 2012-07-11 | 2015-09-09 | 株式会社日立製作所 | 電圧型電力変換装置の制御装置及び制御方法 |
JP6572150B2 (ja) * | 2016-02-09 | 2019-09-04 | 株式会社東芝 | 電力変換装置 |
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WO2015102060A1 (ja) | 2014-01-06 | 2015-07-09 | 三菱電機株式会社 | 電力変換装置 |
JP2019068678A (ja) | 2017-10-04 | 2019-04-25 | 株式会社日立製作所 | 電力変換装置、その制御装置および制御方法、並びに発電システム |
JP2019075844A (ja) | 2017-10-12 | 2019-05-16 | 株式会社日立製作所 | 電力変換装置 |
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