GB2000922A - Control of frequency changers supplying AC motors - Google Patents

Control of frequency changers supplying AC motors

Info

Publication number
GB2000922A
GB2000922A GB7829301A GB7829301A GB2000922A GB 2000922 A GB2000922 A GB 2000922A GB 7829301 A GB7829301 A GB 7829301A GB 7829301 A GB7829301 A GB 7829301A GB 2000922 A GB2000922 A GB 2000922A
Authority
GB
United Kingdom
Prior art keywords
convertor
supplying
control
motors
control circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7829301A
Other versions
GB2000922B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE2730984A external-priority patent/DE2730984C3/en
Priority claimed from DE2739918A external-priority patent/DE2739918C2/en
Priority claimed from DE2811238A external-priority patent/DE2811238C2/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB2000922A publication Critical patent/GB2000922A/en
Application granted granted Critical
Publication of GB2000922B publication Critical patent/GB2000922B/en
Expired legal-status Critical Current

Links

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
    • H02P9/007—Control circuits for doubly fed generators
    • 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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • 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
    • H02P2101/00—Special adaptation of control arrangements for generators
    • H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

An AC/DC/AC convertor comprises a convertor and a control circuit therefor. The convertor is for supplying asynchronously running rotating field machines (particularly of the hysteresis type) with an adjustable voltage, a capacitance being connected to the output of the convertor for reactive power compensation. In order to overcome self-excited asynchronous generator oscillation, the convertor arrangement includes means for deriving a compensating signal which is representative of the oscillation and superimposing the compensating signal on a control signal of the control circuit. <IMAGE>
GB7829301A 1977-07-08 1978-07-10 Current convertor arrangements Expired GB2000922B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2730984A DE2730984C3 (en) 1977-07-08 1977-07-08 Converter circuit
DE2739918A DE2739918C2 (en) 1977-09-05 1977-09-05 Converter arrangement
DE2811238A DE2811238C2 (en) 1978-03-15 1978-03-15 Converter circuit

Publications (2)

Publication Number Publication Date
GB2000922A true GB2000922A (en) 1979-01-17
GB2000922B GB2000922B (en) 1982-03-31

Family

ID=27187248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829301A Expired GB2000922B (en) 1977-07-08 1978-07-10 Current convertor arrangements

Country Status (2)

Country Link
GB (1) GB2000922B (en)
NL (1) NL7806923A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012018495B3 (en) * 2012-09-17 2013-12-19 Vermot AG Method of compensating for inductive reactive current and reactive power of electrical load involves operating detector circuits such that switching time dot takes place precisely in zero crossover of voltage/current to neutral

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012018495B3 (en) * 2012-09-17 2013-12-19 Vermot AG Method of compensating for inductive reactive current and reactive power of electrical load involves operating detector circuits such that switching time dot takes place precisely in zero crossover of voltage/current to neutral

Also Published As

Publication number Publication date
GB2000922B (en) 1982-03-31
NL7806923A (en) 1979-01-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee