JP6322195B2 - 可変速度駆動システム、可変速度駆動システムの運転方法、および炭化水素流の冷却方法 - Google Patents
可変速度駆動システム、可変速度駆動システムの運転方法、および炭化水素流の冷却方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 63
- 238000001816 cooling Methods 0.000 title claims description 29
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 23
- 239000004215 Carbon black (E152) Substances 0.000 title claims description 22
- 229930195733 hydrocarbon Natural products 0.000 title claims description 22
- 230000005284 excitation Effects 0.000 claims description 29
- 238000010304 firing Methods 0.000 claims description 26
- 239000003507 refrigerant Substances 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 15
- 230000036962 time dependent Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 238000001228 spectrum Methods 0.000 description 12
- 239000003949 liquefied natural gas Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 7
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- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000012809 cooling fluid Substances 0.000 description 3
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- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
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- 230000000737 periodic effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
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Classifications
-
- 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
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/04—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0022—Hydrocarbons, e.g. natural gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0281—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc. characterised by the type of prime driver, e.g. hot gas expander
- F25J1/0284—Electrical motor as the prime mechanical driver
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0298—Safety aspects and control of the refrigerant compression system, e.g. anti-surge control
-
- 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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/40—Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/50—Reduction of harmonics
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Control Of Ac Motors In General (AREA)
Description
−AC電源から得られるソース周波数のAC電力を、当該ソース周波数とは等しくない可変駆動周波数の変換電力に変換するステップであって、前記変換電力が、ソース周波数の整数倍数に等しくない次数間高調波周波数の追加周波数成分を有する次数間高調波電流を含む、ステップと、
−電動機に変換電力を給電するステップと、
−少なくとも1つの駆動軸と機械負荷とを含む機械組立体を、電動機によって駆動するステップと、
−機械組立体およびAC電源におけるいずれの歪み励起からも独立して、次数間高調波電流に変動を発生させるステップと、
を含む。
−電動機と、
−AC電源と電動機との間に配置され、AC電源から得られたソース周波数のAC電力を、ソース周波数とは等しくない可変駆動周波数の変換電力に変換する周波数変換器と、
−少なくとも1つの駆動軸と機械負荷とを含む電動機に結合された機械組立体と、
−周波数変換器と相互作用し、機械組立体およびAC電源におけるいずれの歪み励起とも独立して、周波数変換器において生成された次数間高調波電流の次数間高調波周波数に変動を発生させるように構成された、電気変調回路と、
を含む。
−以上で定められた方法にしたがって、可変速度駆動システムを動作させるステップであって、前記機械負荷がコンプレッサを含む、ステップと、
−炭化水素流を冷媒流体に対して熱交換することによって、コンプレッサによる冷媒流体の圧縮と、炭化水素流の冷却との間で冷媒流体を循環させるステップと、
を含む。
Claims (15)
- 電動機と、AC電源と前記電動機との間に配置された周波数変換器とを含む可変速度駆動システムの動作方法であって、
前記AC電源から得られるソース周波数のAC電力を、前記ソース周波数とは等しくない可変駆動周波数の変換電力に変換するステップであって、前記変換電力は、前記ソース周波数の整数倍数に等しくない次数間高調波周波数の追加周波数成分を有する次数間高調波電流を含む、ステップと、
前記電動機に前記変換電力を給電するステップと、
少なくとも1つの駆動軸と機械負荷とを含む機械組立体を、前記電動機によって駆動するステップと、
前記機械組立体および前記AC電源におけるいずれの歪み励起からも独立して、前記次数間高調波電流に変動を発生させるステップと、
を含む、方法。 - 請求項1記載の方法において、前記変動は、所定の変動パターンにしたがって強制される、方法。
- 請求項1または2記載の方法において、前記次数間高調波電流に変動を発生させる前記ステップは、前記次数間高調波電流を反復的および周期的に変化させるステップを含む、
方法。 - 請求項1〜3のいずれか1項記載の方法において、選択された次数間高調波周波数における前記変動は、前記次数間高調波周波数から選択された前記周波数が変動させられない場合における当該周波数から3%と15%との間の最大偏倚以内に留まる、方法。
- 請求項1〜4のいずれか1項記載の方法において、前記次数間高調波電流に変動を発生させる前記ステップは、平均駆動周波数を中心として、時間依存偏倚にしたがって前記駆動周波数を前記平均周波数から変化させるステップを含む、方法。
- 請求項1〜5のいずれか1項記載の方法において、前記AC電力を前記変換電力に変換する前記ステップのために周波数変換器を採用し、前記電動機は、速度制御信号によって、前記周波数変換器と相互作用する速度コントローラによって制御される速度で回転し、前記次数間高調波周波数に変動を発生させる前記ステップは、時間依存偏倚にしたがって、平均制御信号を中心にして当該平均速度制御信号から前記速度制御信号を周期的に変化させるステップを含む、方法。
- 請求項6記載の方法において、前記速度制御信号は、方形波パターンにしたがって変化させられる、方法。
- 請求項6または7記載の方法において、前記電動機が回転する速度は、平均速度から100rpm未満だけ変動させられる、方法。
- 請求項1〜4のいずれか1項に記載の方法において、前記AC電力を変換電力に変換する前記ステップは、点弧パルスによってアクティブ化されるスイッチング素子を含むインバータを使用して、前記AC電力を整流し、前記整流した信号を前記変換電力に変換することによって、整流信号を形成するステップを含み、前記次数間高調波周波数に変動を発生させる前記ステップは、平均点弧角度を中心に、時間依存偏倚にしたがって、前記平均点弧角度から前記点弧パルスの点弧角度を周期的に変化させるステップを含む、方法。
- 請求項9記載の方法において、前記時間依存偏倚は、前記平均点弧角度から、0.5°と10°との間の最大偏倚以内に留まる、方法。
- 請求項1〜10のいずれか1項記載の方法において、前記次数間高調波周波数に変動を発生させる前記ステップは、所定の波形にしたがって前記次数間高調波周波数を変調するステップを含む、方法。
- 請求項11記載の方法において、前記所定の波形は、駆動周波数の関数として所定の態様で変化する、方法。
- 可変速度駆動システムであって、
電動機と、
AC電源と前記電動機との間に配置され、前記AC電源から得られたソース周波数のAC電力を、前記ソース周波数とは等しくない可変駆動周波数の変換電力に変換する周波数変換器と、
少なくとも1つの駆動軸と機械負荷とを含む前記電動機に結合された機械組立体と、
前記周波数変換器と相互作用し、前記機械組立体および前記AC電源におけるいずれの歪み励起とも独立して、前記周波数変換器において生成された次数間高調波電流の次数間高調波周波数に変動を発生させるように構成された、電気変調回路と、
を備える、可変速度駆動システム。 - 請求項13記載の可変速度駆動システムにおいて、前記電気変調回路は、前記可変速度駆動システムの速度コントローラの一部を形成する、可変速度駆動システム。
- 炭化水素流の冷却方法であって、
請求項1〜12のいずれか1項に定められた方法にしたがって、可変速度駆動システムを動作させるステップであって、前記機械負荷はコンプレッサを含む、ステップと、
炭化水素流を冷媒流体に対して熱交換することによって、前記コンプレッサによる前記冷媒流体の圧縮と、前記炭化水素流の冷却との間で前記冷媒流体を循環させるステップと、
を含む、方法。
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EP12182645.7 | 2012-08-31 | ||
EP12182645 | 2012-08-31 | ||
PCT/EP2013/067870 WO2014033201A2 (en) | 2012-08-31 | 2013-08-29 | Variable speed drive system, method for operating a variable speed drive system and method for refrigerating a hydrcarbon stream |
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US (1) | US9479103B2 (ja) |
EP (1) | EP2891243A2 (ja) |
JP (1) | JP6322195B2 (ja) |
CN (1) | CN104737438B (ja) |
RU (1) | RU2642827C2 (ja) |
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-
2013
- 2013-08-29 JP JP2015529021A patent/JP6322195B2/ja active Active
- 2013-08-29 US US14/423,940 patent/US9479103B2/en active Active
- 2013-08-29 EP EP13758805.9A patent/EP2891243A2/en not_active Withdrawn
- 2013-08-29 CN CN201380055370.9A patent/CN104737438B/zh not_active Expired - Fee Related
- 2013-08-29 RU RU2015111522A patent/RU2642827C2/ru active
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US20150303855A1 (en) | 2015-10-22 |
WO2014033201A2 (en) | 2014-03-06 |
JP2015529443A (ja) | 2015-10-05 |
WO2014033201A3 (en) | 2014-10-30 |
RU2642827C2 (ru) | 2018-01-29 |
EP2891243A2 (en) | 2015-07-08 |
RU2015111522A (ru) | 2016-10-20 |
US9479103B2 (en) | 2016-10-25 |
CN104737438A (zh) | 2015-06-24 |
CN104737438B (zh) | 2018-01-02 |
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