JPS57130116A - Speed controlling device for expansion turbine - Google Patents

Speed controlling device for expansion turbine

Info

Publication number
JPS57130116A
JPS57130116A JP56014338A JP1433881A JPS57130116A JP S57130116 A JPS57130116 A JP S57130116A JP 56014338 A JP56014338 A JP 56014338A JP 1433881 A JP1433881 A JP 1433881A JP S57130116 A JPS57130116 A JP S57130116A
Authority
JP
Japan
Prior art keywords
speed
expansion turbine
difference
turbine
load
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.)
Pending
Application number
JP56014338A
Other languages
Japanese (ja)
Inventor
Kazuo Ihara
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56014338A priority Critical patent/JPS57130116A/en
Publication of JPS57130116A publication Critical patent/JPS57130116A/en
Pending 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
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
    • H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by short-circuit or resistive braking
    • 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
    • H02P2103/00—Controlling arrangements characterised by the type of generator
    • H02P2103/20—Controlling arrangements characterised by the type of generator of the synchronous type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Velocity Or Acceleration (AREA)

Abstract

PURPOSE:To improve the operability and the reliability, by providing a switching circuit, which makes a load current continuous, between a generator, which is used as a damping machine of the expansion turbine, and a load to control the turbine in accordance with the difference between the real speed and a set speed of the turbine. CONSTITUTION:An AC output generated from a synchronous generator 2 by an expansion turbine 1 is rectified in a part 7 and is absorbed through a transistor (TR) 10 by a load 3. The frequency of the output of the synchronous generator 2 is converted to a voltage signal by an F/V converter 19, and a speed set by a speed setting equipment 5 is converted to a voltage signal also, and the difference between both voltages is amplified in a part 18 as the difference between the real speed and the set speed. When the actual rotational frequency of the expansion turbine 1 is larger than the set value, the difference between the output voltage of the F/V converter 19 and the voltage of the setting equipment becomes positive and is amplified in a part 18 to turn on a TR 24, and the turn- on time of a TR 23 and the TR 10 of the switching circuit is longer, and the time of the load state of the synchronous generator 2 is longer; and when the actual rotational frequency of the expansion turbine 1 is smaller than the set value, the time of this load state is shorter. Thus, the rotational frequency is controlled.
JP56014338A 1981-02-04 1981-02-04 Speed controlling device for expansion turbine Pending JPS57130116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56014338A JPS57130116A (en) 1981-02-04 1981-02-04 Speed controlling device for expansion turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56014338A JPS57130116A (en) 1981-02-04 1981-02-04 Speed controlling device for expansion turbine

Publications (1)

Publication Number Publication Date
JPS57130116A true JPS57130116A (en) 1982-08-12

Family

ID=11858272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56014338A Pending JPS57130116A (en) 1981-02-04 1981-02-04 Speed controlling device for expansion turbine

Country Status (1)

Country Link
JP (1) JPS57130116A (en)

Similar Documents

Publication Publication Date Title
KR880014722A (en) Voltage regulator of charging generator
JPS5534854A (en) Controlling method of secondary winding-exciting motor
JPS54106832A (en) Operation control method for a/d converter
JPS57130116A (en) Speed controlling device for expansion turbine
JPS5425415A (en) Inverter controller
JPS55150791A (en) Motor driving circuit
JPS561793A (en) Method for controlling inverter
JPS54161016A (en) Thyristor leonard circuit
JPS5563575A (en) Control for self-excited inverter device
JPS5621728A (en) Power unit for electric discharge machining
GB2019138A (en) Method and apparatus for controlling the supply of power to loads from a limited electricity supply
GB1508779A (en) Controlled ac power supply circuits
JPS56133999A (en) Inverter control circuit
JPS5561279A (en) Controller of power converter
JPS55114190A (en) Dc motor
JPS531821A (en) Dc-ac converter
JPS5593483A (en) Malfunction prevention method at power making time and turn off time for electric typewriter of japanese language
JPS54121922A (en) Hystereasis motor operation controller
JPS5475017A (en) Ac generator control system
JPS55150781A (en) Thyrister converting device
JPS56153992A (en) Controlling device of motor
JPS55147990A (en) Motor speed control system
JPS647209A (en) Testing load for direct current output stabilized power source
JPS57135697A (en) Control device for ac motor
JPS5537862A (en) Controlling supplementary charging of forced- commutation rectifier