GB1396579A - Electrical installations - Google Patents

Electrical installations

Info

Publication number
GB1396579A
GB1396579A GB3874772A GB3874772A GB1396579A GB 1396579 A GB1396579 A GB 1396579A GB 3874772 A GB3874772 A GB 3874772A GB 3874772 A GB3874772 A GB 3874772A GB 1396579 A GB1396579 A GB 1396579A
Authority
GB
United Kingdom
Prior art keywords
exciter
winding
machine
current
rotor
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.)
Expired
Application number
GB3874772A
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1396579A publication Critical patent/GB1396579A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/38—Structural association of synchronous generators with exciting machines
    • 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
    • H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
    • H02P9/12—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal
    • H02P9/123—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal for demagnetising; for reducing effects of remanence

Abstract

1396579 De-excitation of brushless synchronous machines SIEMENS AG 18 Aug 1972 [23 Aug 1971] 38747/72 Heading H2A In an electrical installation comprising a brushless synchronous machine 1 including an exciter winding 3 arranged to be excited, via an uncontrolled rectifier 7 mounted for rotation, by a 3Ph. rotor winding 6 of an exciter machine 4 having an excitable stator winding 5, there is provided a de-exciter machine 8 comprising a polyphase stator winding 10 and at least one rotor winding 9 connected in series with the synchronous machine exciter winding 3 for injecting into the latter de-excitation current in the direction opposite to that in which the rectifier is arranged to feed excitation current thereto from the exciter machine rotor winding, the exciter and de-exciter machines 4, 8 both being either synchronous or asynchronous machines and there being connected across the or each de-exciter machine rotor winding 9 a diode 11 poled to provide a short circuit across such winding(s) during those half cycles of the de-exciter machine rotor current which are of a polarity opposing the de-exciter action of the rotor current half cycles of the opposite polarity. As shown, the two stator windings 5, 10 are supplied in parallel, via respective rectifier bridges 12, 17 and transformers 13, 18, from a choking coil 14 and a current transformer 15 with a current which is load-dependent upon the machine 1. The bridges may be short-circuited
GB3874772A 1971-08-23 1972-08-18 Electrical installations Expired GB1396579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712142982 DE2142982C3 (en) 1971-08-23 1971-08-23 Arrangement for quick de-excitation of brushless synchronous machines, which can be excited by rotating uncontrolled rectifiers

Publications (1)

Publication Number Publication Date
GB1396579A true GB1396579A (en) 1975-06-04

Family

ID=5817966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3874772A Expired GB1396579A (en) 1971-08-23 1972-08-18 Electrical installations

Country Status (6)

Country Link
JP (1) JPS5232041B2 (en)
CH (1) CH537665A (en)
DE (1) DE2142982C3 (en)
FR (1) FR2150322B1 (en)
GB (1) GB1396579A (en)
SE (1) SE373708B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111930A (en) * 1974-07-20 1976-01-30 Murata Machinery Ltd Nijunenshikino kukishikidoshisochi
DE2543018C3 (en) * 1975-09-26 1978-07-27 Hamel Gmbh, Zwirnmaschinen, 4400 Muenster Thread brake, especially for two-for-one twisting spindles
DE2830265C2 (en) * 1978-07-10 1983-01-13 Palitex Project-Company Gmbh, 4150 Krefeld Two-for-one twisting spindle
JPS5448134U (en) * 1978-07-27 1979-04-03
JPS5620621A (en) * 1979-07-27 1981-02-26 Murata Mach Ltd Threading device with aid of air in double twister
JPS5619582U (en) * 1979-07-25 1981-02-20
JPS5619581U (en) * 1979-07-23 1981-02-20
JPS57206256A (en) * 1981-06-15 1982-12-17 Hitachi Ltd Internal combustion-type generating set for power vehicle
DE102016220235A1 (en) * 2016-10-17 2018-04-19 Seg Automotive Germany Gmbh Detecting a fault in a generator unit

Also Published As

Publication number Publication date
DE2142982A1 (en) 1973-03-08
JPS5232041B2 (en) 1977-08-19
JPS4830009A (en) 1973-04-20
FR2150322A1 (en) 1973-04-06
FR2150322B1 (en) 1976-01-23
SE373708B (en) 1975-02-10
CH537665A (en) 1973-05-31
DE2142982C3 (en) 1975-04-10
DE2142982B2 (en) 1974-08-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees