JP6813074B1 - 電力変換システム - Google Patents
電力変換システム Download PDFInfo
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/15—Controlling commutation time
-
- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- 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
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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
-
- 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
- H02M7/5387—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 in a bridge configuration
-
- 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
- H02M7/5387—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 in a bridge configuration
- H02M7/53871—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 in a bridge configuration with automatic control of output voltage or current
- H02M7/53873—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 in a bridge configuration with automatic control of output voltage or current with digital control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/24—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual ac commutator motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/085—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/14—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation with three or more levels of voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2209/00—Indexing scheme relating to controlling arrangements characterised by the waveform of the supplied voltage or current
- H02P2209/09—PWM with fixed limited number of pulses per period
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
図1に本実施形態1におけるシステム構成図を示す。上位制御部1は固定パルスパターン変調部2より上流に存在する制御を示しており、例えば電力変換システムに操作盤操作量に基づく速度指令、及び、三相の検出電流が入力され、速度制御,電流制御を経て指令変調率と制御位相の指令の生成を行う。
(A)遷移時の位相において、遷移前パルスパターンで参照する位相インデックスθiと遷移後パルスパターンで参照する位相インデックスθiが異なる。
(B)遷移時の位相において、遷移前パルスパターンの指令電圧レベルLと遷移後パルスパターンの指令電圧レベルLが異なる。
(ア)テーブル遷移後の適切なテーブル参照位置を探索する機構。
(イ)テーブル遷移後のパルスパターンの指令電圧レベルLへと追従する機構。
1.指令変調率dに最も近い変調率のパルスパターンを探索する(2−2)。
2.位相インデックスθiの候補nを設定し、その位相インデックスθiのテーブルの位相情報An=Tθ[di,n]と遷移時の位相AXを比較する(2−5,2−6,2−8)。
3.テーブルの位相情報Anが遷移時の位相AXを超えていれば、位相インデックスθixを1つ巻き戻して採用する(2−9)。
4.採用後は探索終了フラグfound=1とし、採用インデックスの上書きを防止する(2−7,2−9)。
(ア)遷移後の適切なテーブル参照位置を探索する機構。
(イ)遷移後のパルスパターンの指令電圧レベルへと追従する機構。
図11に本実施形態2における固定パルスパターン変調部2の構成図を示す。遷移用インデックス探索部5は指令変調率dを入力し、遷移用テーブルインデックスidx’を出力する。
2…固定パルスパターン変調部
3…電力変換器(インバータ)
4…負荷
SW1,SW2…遷移用スイッチ
5…遷移用インデックス探索部
6…テーブル比較部
7,8…バッファ
9…遷移用判定部
Claims (8)
- 各変調率毎に位相情報に応じて指令電圧レベルを定めたパルスパターンが格納されたテーブルを参照し、指令変調率および制御位相に基づいてゲート信号を生成する固定パルスパターン変調部を備え、前記ゲート信号に基づいて電力変換器を駆動する電力変換システムであって、
前記固定パルスパターン変調部は、
前記指令変調率に基づいて、遷移用テーブルインデックスを出力する遷移用インデックス探索部と、
前記遷移用テーブルインデックスおよびテーブルインデックス前回値を入力し、遷移ありの場合は前記遷移用テーブルインデックスを、遷移なしの場合は前記テーブルインデックス前回値を、テーブルインデックスとして出力する遷移用スイッチと、
前記テーブルインデックスと前記制御位相に基づいてテーブル比較を行い、ゲート信号を出力するテーブル比較部と、
前記テーブルインデックスを1制御周期遅延させ、前記テーブルインデックス前回値として出力するバッファと、
を備え、
前記パルスパターンの遷移時に、遷移後の適切なテーブル参照位置を探索し、遷移後の前記パルスパターンの指令電圧レベルへ追従させることを特徴とする電力変換システム。 - 前記テーブル比較部は、
前記テーブルとして、各変調率毎にレベル変化する位相情報とレベル変化後の指令電圧レベル情報を有し、
前記テーブルインデックスに基づいてテーブル値を読み出し、前記制御位相とテーブルの位相情報とを比較し、前記制御位相が前記テーブルの位相情報よりも大きければ前記指令電圧レベルを更新して前記テーブルの位相情報の参照位置を一つインクリメントし、前記制御位相が前記テーブルの位相情報以下であれば前記指令電圧レベルおよび前記テーブルの位相情報の参照位置を前回値のままとし、
前記指令電圧レベルと同じ出力電圧レベルとなるように前記ゲート信号を生成し、前記ゲート信号と前記テーブルインデックスを出力することを特徴とする請求項1記載の電力変換システム。 - 前記遷移用インデックス探索部は、
前記指令変調率に最も近い変調率の前記パルスパターンを探索して変調率インデックスとし、
前記電力変換器の各相において、遷移時の位相よりも大きいテーブルの位相情報のうち最小のものよりも一つ小さい位相情報を位相インデックスとし、
前記変調率インデックスと前記電力変換器の各相の前記位相インデックスをまとめた前記遷移用テーブルインデックスを出力することを特徴とする請求項1または2記載の電力変換システム。 - 各変調率毎に位相情報に応じて指令電圧レベルを定めたパルスパターンが格納されたテーブルを参照し、指令変調率および制御位相に基づいてゲート信号を生成する固定パルスパターン変調部を備え、前記ゲート信号に基づいて電力変換器を駆動する電力変換システムであって、
前記固定パルスパターン変調部は、
前記指令変調率に基づいて、遷移用テーブルインデックスを出力する遷移用インデックス探索部と、
前記制御位相と制御位相前回値に基づいて遷移判定結果を出力する遷移判定部と、
前記遷移用テーブルインデックスおよびテーブルインデックス前回値を入力し、前記遷移判定結果に基づいて遷移ありの場合は前記遷移用テーブルインデックスを、遷移なしの場合は前記テーブルインデックス前回値を、テーブルインデックスとして出力する遷移用スイッチと、
前記テーブルインデックスと前記制御位相に基づいてテーブル比較を行い、ゲート信号を出力するテーブル比較部と、
前記テーブルインデックスを1制御周期遅延させ、前記テーブルインデックス前回値として出力するバッファと、
を備え、
前記パルスパターンの遷移タイミングを、前記制御位相の0rad,π/3rad,2π/3rad,πrad,4π/3rad,5π/3rad近傍とし、
前記パルスパターンの遷移時に、遷移後の適切なテーブル参照位置を探索し、遷移後の前記パルスパターンの指令電圧レベルへ追従させることを特徴とする電力変換システム。 - 前記テーブル比較部は、
前記テーブルとして、各変調率毎にレベル変化する位相情報とレベル変化後の指令電圧レベル情報を有し、
前記テーブルインデックスに基づいてテーブル値を読み出し、前記制御位相とテーブルの位相情報とを比較し、前記制御位相が前記テーブルの位相情報よりも大きければ前記指令電圧レベルを更新して前記テーブルの位相情報の参照位置を一つインクリメントし、前記制御位相が前記テーブルの位相情報以下であれば前記指令電圧レベルおよび前記テーブルの位相情報の参照位置を前回値のままとし、
前記指令電圧レベルと同じ出力電圧レベルとなるように前記ゲート信号を生成し、前記ゲート信号と前記テーブルインデックスを出力することを特徴とする請求項4記載の電力変換システム。 - 前記遷移用インデックス探索部は、
前記指令変調率に最も近い変調率の前記パルスパターンを探索して変調率インデックスとし、
前記電力変換器の各相において、遷移時の位相よりも大きいテーブルの位相情報のうち最小のものよりも一つ小さい位相情報を位相インデックスとし、
前記変調率インデックスと前記電力変換器の各相の前記位相インデックスをまとめた前記遷移用テーブルインデックスを出力することを特徴とする請求項4または5記載の電力変換システム。 - 前記遷移判定部は、
前記制御位相と前記制御位相前回値の偏差の絶対値がπrad以上か否かを判定し、前記偏差がπradより大きければ前記遷移判定結果を遷移ありとし、
前記偏差がπrad以下であれば、ある相の遷移時の位相の遷移候補をπ/3,2π/3,π,4π/3,5π/3とし、(制御位相−遷移候補)*(制御位相前回値−遷移候補)が0よりも小さいか否かを判定し、何れか1つの遷移候補において(制御位相−遷移候補)*(制御位相前回値−遷移候補)が0よりも小さければ前記遷移判定結果を遷移ありとし、全ての前記遷移候補において(制御位相−遷移候補)*(制御位相前回値−遷移候補)が0以上であれば前記遷移判定結果を遷移なしとすることを特徴とする請求項4〜6のうち何れかに記載の電力変換システム。 - 前記電力変換器は4レベル以上のマルチレベル電力変換器であることを特徴とする請求項1〜7のうち何れかに記載の電力変換システム。
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EP20881383.2A EP4047814B1 (en) | 2019-10-30 | 2020-08-18 | Power conversion system |
US17/771,629 US11563367B2 (en) | 2019-10-30 | 2020-08-18 | Power conversion system |
PCT/JP2020/031082 WO2021084847A1 (ja) | 2019-10-30 | 2020-08-18 | 電力変換システム |
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US (1) | US11563367B2 (ja) |
EP (1) | EP4047814B1 (ja) |
JP (1) | JP6813074B1 (ja) |
WO (1) | WO2021084847A1 (ja) |
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- 2020-08-18 US US17/771,629 patent/US11563367B2/en active Active
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KR20230111017A (ko) * | 2022-01-17 | 2023-07-25 | 한국전력공사 | 직류전송시스템의 탭 변환 제어 장치 및 mmc를 위한 탭 변환 신호 생성 장치 |
KR102639212B1 (ko) * | 2022-01-17 | 2024-02-22 | 한국전력공사 | 직류전송시스템의 탭 변환 제어 장치 및 mmc를 위한 탭 변환 신호 생성 장치 |
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EP4047814A4 (en) | 2022-12-07 |
WO2021084847A1 (ja) | 2021-05-06 |
JP2021072679A (ja) | 2021-05-06 |
US20220352805A1 (en) | 2022-11-03 |
EP4047814B1 (en) | 2024-04-10 |
EP4047814A1 (en) | 2022-08-24 |
US11563367B2 (en) | 2023-01-24 |
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