KR100566437B1 - 위상천이를 이용한 인버터 고장 검출 장치 및 방법 - Google Patents
위상천이를 이용한 인버터 고장 검출 장치 및 방법 Download PDFInfo
- Publication number
- KR100566437B1 KR100566437B1 KR1020030079547A KR20030079547A KR100566437B1 KR 100566437 B1 KR100566437 B1 KR 100566437B1 KR 1020030079547 A KR1020030079547 A KR 1020030079547A KR 20030079547 A KR20030079547 A KR 20030079547A KR 100566437 B1 KR100566437 B1 KR 100566437B1
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- KR
- South Korea
- Prior art keywords
- phase
- current
- ground fault
- inverter
- ground
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/162—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems
- H02H3/165—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems for three-phase systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/027—Details with automatic disconnection after a predetermined time
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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
-
- 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
- H02M7/53875—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 analogue control of three-phase 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Claims (2)
- 인버터로 유도 전동기를 구동하는 제어 장치에 있어서,상기 인버터의 각 상의 전류를 검출하여 출력하는 전류 검출기와;전류 검출 인터럽트의 발생 빈도를 조절하여 상기 전류 정보의 양을 조절하는 검출빈도조절기와;상기 각 상에 무효 벡터 인가시 전류의 변동을 검출하고 검출된 값과 기 설정된 무효 벡터 전류 레벨의 대소 여부에 따라 어느 상에서 지락이 발생하였는지를 판별하는 지락 상 판별기와;상기 판별된 지락 상의 전압 지령의 최대값의 위상을 지락전류 최대값이 흐르는 위상에 일치시키는 위상 천이 조정기로 구성된 지락검출기를 포함하여 구성된 것을 특징으로 하는 위상천이를 이용한 인버터 고장 검출 장치.
- 인버터에서 각 상에 흐르는 전류를 감지한 값을 모두 더한 값이 지락전류 레벨보다 크면 지락검출을 결정하는 단계와;상기 지락검출이 결정되면 무효 벡터 인가시 각 상별 검출 전류의 크기 차이인 무효 벡터 전류 레벨을 설정하는 단계와;상기 각 상의 전류에 대한 검출 빈도를 조절하여 전류 정보량을 증가시키는 단계와;상기 각 상에 무효 벡터 인가시 전류의 변동을 계산한 값과 기 설정된 상기 무효 벡터 전류 레벨간의 대소 여부를 비교하여 어느 상에서 지락이 발생하였는지를 판단하는 단계와;상기 지락으로 판별된 상의 전압 지령의 최대값의 위상을 지락전류 최대값이 흐르는 위상에 일치시키는 단계와;상기 지락검출이 소정 횟수 이상이면 지락 고장으로 판단하는 단계로 이루어진 것을 특징으로 하는 위상천이를 이용한 인버터 고장 검출 방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030079547A KR100566437B1 (ko) | 2003-11-11 | 2003-11-11 | 위상천이를 이용한 인버터 고장 검출 장치 및 방법 |
US10/978,428 US7233465B2 (en) | 2003-11-11 | 2004-11-02 | Ground fault detection system and method for inverter |
CNB2004100929495A CN100553096C (zh) | 2003-11-11 | 2004-11-11 | 用于反相器的接地故障检测***和方法 |
Applications Claiming Priority (1)
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KR1020030079547A KR100566437B1 (ko) | 2003-11-11 | 2003-11-11 | 위상천이를 이용한 인버터 고장 검출 장치 및 방법 |
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Publication Number | Publication Date |
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KR20050045468A KR20050045468A (ko) | 2005-05-17 |
KR100566437B1 true KR100566437B1 (ko) | 2006-03-31 |
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Country Status (3)
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US (1) | US7233465B2 (ko) |
KR (1) | KR100566437B1 (ko) |
CN (1) | CN100553096C (ko) |
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2003
- 2003-11-11 KR KR1020030079547A patent/KR100566437B1/ko active IP Right Grant
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2004
- 2004-11-02 US US10/978,428 patent/US7233465B2/en active Active
- 2004-11-11 CN CNB2004100929495A patent/CN100553096C/zh active Active
Also Published As
Publication number | Publication date |
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CN1617434A (zh) | 2005-05-18 |
US7233465B2 (en) | 2007-06-19 |
KR20050045468A (ko) | 2005-05-17 |
US20050099743A1 (en) | 2005-05-12 |
CN100553096C (zh) | 2009-10-21 |
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