KR20080107865A - 계통 연계형 고압 권선형 유도 발전기 제어 장치 - Google Patents
계통 연계형 고압 권선형 유도 발전기 제어 장치 Download PDFInfo
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- KR20080107865A KR20080107865A KR1020070056186A KR20070056186A KR20080107865A KR 20080107865 A KR20080107865 A KR 20080107865A KR 1020070056186 A KR1020070056186 A KR 1020070056186A KR 20070056186 A KR20070056186 A KR 20070056186A KR 20080107865 A KR20080107865 A KR 20080107865A
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- induction generator
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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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
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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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/34—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device
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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
- 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
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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
- 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
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
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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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/07—Doubly fed machines receiving two supplies both on the stator only wherein the power supply is fed to different sets of stator windings or to rotor and stator windings
- H02P2207/073—Doubly fed machines receiving two supplies both on the stator only wherein the power supply is fed to different sets of stator windings or to rotor and stator windings wherein only one converter is used, the other windings being supplied without converter, e.g. doubly-fed induction machines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims (14)
- 고정자 권선이 개폐용 스위치를 통해 3상 계통권선과 연결되며 회전자 권선을 제어용 권선으로 갖는 권선형 유도 발전기를 제어하기 위한 제어 장치로서,각 상마다 2-leg IGBT로 구성된 단상변환기를 직렬로 쌓아서 완성된 멀티레벨 토폴로지를 구성하여 3상 전압 파형을 발생하고, 권선형 유도 발전기의 회전자 권선에서 슬립 전력만 부담하도록 회전자 전류를 제어하는 H-브리지 멀티레벨 변환기; 및상기 H-브리지 멀티레벨 변환기에서 요구하는 직류 전압원을 생성하는 승압용 인덕터와 3-leg IGBT로 구성되는 승압 변환기를 포함하는 계통 연계형 권선형 유도 발전기 제어장치.
- 제1 항에 있어서, 상기 H-브리지 멀티레벨 변환기는 계통 전압 크기에 따라 역률을 가변으로 제어하는 기능 및 고정자 권선으로 생성된 전압을 돌입전류가 발생되지 않도록 계통 전압과 병입시킬 수 있는 계통 전압 동기화 기능을 수행하는 계통 연계형 권선형 유도 발전기 제어장치.
- 제2 항에 있어서, 상기 H-브리지 멀티레벨 변환기에 의한 상기 고정자 권선의 역률 제어 기능에서, 종전의 최대 전력 추종 방법으로부터 결정된 유효전력기준 치를 피상전력 파라미터(S*)라고 다르게 놓은 다음, 계통 전압이 안정된 범위에 있으면 역률 기준치가 1이 되도록 하여 유효 전력 기준치로 모두 전환하지만, 만약 계통 전압이 떨어지면 수학식 을 이용하여 계통 전압 떨어진 정도에 따라 역률 기준치를 작게 설정되도록 하여 유효전력으로 전환되는 비율이 작아지도록 수학식 을 이용하여 결정하며, 나머지는 계통전압을 회복시킬 수 있도록 수학식 을 이용하여 무효전력 기준치를 갖도록 분배하는 계통 연계형 권선형 유도 발전기 제어장치.
- 제2 항에 있어서, 상기 H-브리지 멀티레벨 변환기에 의한 동기화 동작에서,상기 회전자 권선에서 슬립전력만 부담하도록, 계통 전압 위상각이 θs이고 발전기 회전 위치가 θr이며 동기화 보상각이 θoffset일 때, 좌표변환각으로 슬립각(θslip)을 사용하며 슬립각은 수학식 θslip = θs - θr + θoffset로부터 계산되는 계통 연계형 권선형 유도 발전기 제어장치.
- 제2 항에 있어서, 상기 H-브리지 멀티레벨 변환기에 의한 동기화 동작에서,상기 고정자 권선으로 유기되는 전압의 위상과 계통전압 위상이 동일하도록 만들기 위하여, 계통 권선과 발전기의 고정자 권선에서 각각 측정한 d축 전압 오차를 △Vds이라고 할 때, 상기 d-축 전압 오차를 입력으로 받는 PI 제어기를 사용하고, PI 제어기 출력 신호를 동기화 보상각(θoffset)으로 정의하며, 상기 동기화 보상각 θoffset = PI(△Vds)에 의해 결정되는 계통 연계형 권선형 유도 발전기 제어장치.
- 제2 항에 있어서, 상기 H-브리지 멀티레벨 변환기에 의한 동기화 동작에서, 상기 고정자 권선으로 유기되는 전압의 크기와 계통 전압의 크기가 동일하도록 만들기 위하여, 계통 권선과 발전기의 고정자 권선에서 각각 측정한 q축 전압 오차를 △Vqs이라고 할 때, 상기 q-축 전압 오차를 입력으로 받는 PI 제어기를 사용하고, PI 제어기 출력을 기존의 d축 전류값을 보상해 주기 위한 d축 보상전류 (idre _ comp)로 정의하며, 상기 d축 보상전류 (idre _ comp)는 수학식 idre _ comp = PI(△Vqs)에 의해 결정되는 계통 연계형 권선형 유도 발전기 제어장치.
- 제2 항에 있어서, 상기 H-브리지 멀티레벨 변환기에 의한 동기화 동작에서, 상기 고정자 권선으로 유기되는 전압의 크기와 계통 전압의 크기가 동일하도록 만들기 위하여, d-측 보상 전류 idre _ comp를 계산할 때 수렴 속도를 향상시킬 수 있도록 피드포워드 항인 idre _ comp _ ff를 추가로 사용하여 idre _ comp = PI(△Vqs) + idre _ comp _ ff으로 계 산하고, 여기서, 피드포워드 항 idre _ comp _ ff의 특정 값으로 E/WeLo를 가질 수 있는 계통 연계형 권선형 유도 발전기 제어장치.
- 제2 항에 있어서, 상기 H-브리지 멀티레벨 변환기에 의한 동기화 동작에서, 무효전력 제어기 출력으로부터 얻어지는 d-축 기준전류(ie * dr)와 회전자 권선에서 측정된 d-측 전류(ie dr), 그리고 상기 고정자 권선의 전압 크기가 계통전압 크기와 같아지도록 만들어 주기 위해서 요구되는 d축 보상전류 (idre _ comp)를 이용하여 d-축 전류제어기의 오차 신호(△idr)는 수학식 △idr = ie * dr- ie dr + idre _ comp으로 계산하는 계통 연계형 권선형 유도 발전기 제어장치.
- 제1 항에 있어서, 상기 승압 변환기는 상기 고정자 권선의 역률을 제어하는 기능, 계통 전압이 불안정하게 되었을 때 무효 전력을 공급하도록 제어하는 폴트 라이드-쓰루(fault ride-through) 기능, 및 고립 운전을 용이하게 방지하도록 백색 잡음을 주입하는 고립 운전 회피 기능을 수행하는 계통 연계형 권선형 유도 발전기 제어장치.
- 제9 항에 있어서, 상기 폴트 라이드-쓰루 기능을 갖도록 하는 d축 전류(ie frt) 값이 최대 상한치를 넘지 못하도록 수학식: 만일 ie frt > ie * 8 이면 ie frt = ie * s로 제한하는 계통 연계형 권선형 유도 발전기 제어장치.
- 제9 항에 있어서, 상기 승압 변환기에 의한 고립 운전 회피 기능으로서, + 신호와 - 신호가 대칭이며 주기적으로 교번하는 부호를 얻기 위하여 전압 위상각(θs)의 부호를 이용하는 방법과, q축 정격 전류(iq _ rated)와 조절상수(kanti)를 이용하여 정전 구간에서 고립운전 회피를 지원할 수 있는 고립운전 회피용 d-축 전류(ie anti)를 수학식 ie anti = sign (θs)×Kanti×iq _ rated에 의해 얻으며, 주파수 변동폭(△f)이 일정 기준치 이상(△fUpper _ Limit)이면 고립 모드에 들어있을 가능성이 높은 것으로 판단하고 현재 주입하고 있는 신호가 증분(△kanti) 만큼 더 커지도록 수학식 kanti = Kanti + △Kanti을 이용하여 증가시키며, 주파수 변동폭(△f)이 일정 기준치 이하(△fLower _ Limit)이면 초기에 설정된 d-축 전류 만큼으로 환원되도록 조절상수(kanti)를 재조정함으로써 결정된 백색 잡음인 d-축 전류(ie anti)를 전 시간대에 주입하는 방법을 통해 정전 구간에서는 주파수 변동(df/dt)이 크게 여기 되도록 하여 고립운전 운전을 신속히 탈출할 수 있도록 하는 고립 운전 회피 방식을 수행하는 계통 연계형 권선형 유도 발전기 제어장치.
Priority Applications (4)
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KR1020070056186A KR100886194B1 (ko) | 2007-06-08 | 2007-06-08 | 계통 연계형 고압 권선형 유도 발전기 제어 장치 |
EP07254660A EP2001120B1 (en) | 2007-06-08 | 2007-11-30 | Controller of doubly-fed induction generator |
DK07254660.9T DK2001120T3 (da) | 2007-06-08 | 2007-11-30 | Reguleringsindretning af dobbeltfødet induktionsgenerator |
US11/987,540 US7638983B2 (en) | 2007-06-08 | 2007-11-30 | Controller of doubly-fed induction generator |
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KR1020070056186A KR100886194B1 (ko) | 2007-06-08 | 2007-06-08 | 계통 연계형 고압 권선형 유도 발전기 제어 장치 |
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KR20080107865A true KR20080107865A (ko) | 2008-12-11 |
KR100886194B1 KR100886194B1 (ko) | 2009-02-27 |
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