ZA732672B - Improvements in or relating to electrical installations - Google Patents
Improvements in or relating to electrical installationsInfo
- Publication number
- ZA732672B ZA732672B ZA732672A ZA732672A ZA732672B ZA 732672 B ZA732672 B ZA 732672B ZA 732672 A ZA732672 A ZA 732672A ZA 732672 A ZA732672 A ZA 732672A ZA 732672 B ZA732672 B ZA 732672B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- electrical installations
- installations
- electrical
- Prior art date
Links
Classifications
-
- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M5/4505—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only having a rectifier with controlled elements
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/03—Synchronous motors with brushless excitation
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2219018A DE2219018C3 (de) | 1972-04-19 | 1972-04-19 | Anordnung zur Speisung eines Stromrichtermotors über einen Umrichter mit Gleichstromzwischenkreis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA732672B true ZA732672B (en) | 1974-03-27 |
Family
ID=5842504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA732672A ZA732672B (en) | 1972-04-19 | 1973-04-18 | Improvements in or relating to electrical installations |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US3854078A (it) |
| JP (1) | JPS4916807A (it) |
| AT (1) | AT321416B (it) |
| AU (1) | AU475771B2 (it) |
| BE (1) | BE798396A (it) |
| CA (1) | CA976229A (it) |
| CH (1) | CH548134A (it) |
| DE (1) | DE2219018C3 (it) |
| FR (1) | FR2180925B1 (it) |
| GB (1) | GB1404901A (it) |
| IT (1) | IT982469B (it) |
| NL (1) | NL7304991A (it) |
| NO (1) | NO134078C (it) |
| SE (1) | SE386027B (it) |
| ZA (1) | ZA732672B (it) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49129827A (it) * | 1973-04-20 | 1974-12-12 | ||
| CH589966A5 (it) * | 1974-12-03 | 1977-07-29 | Siemens Ag | |
| US3987356A (en) * | 1975-06-23 | 1976-10-19 | General Electric Company | Controlled capacitive filter for active loads |
| JPS5917620B2 (ja) * | 1977-02-16 | 1984-04-23 | 株式会社日立製作所 | インバ−タの保護装置 |
| US4292577A (en) * | 1979-03-12 | 1981-09-29 | Kearney & Trecker Corporation | A.C. Motor control circuit |
| US4382217A (en) * | 1981-05-15 | 1983-05-03 | Gould Inc. | Starting control circuit for an A.C. motor |
| CH644478A5 (fr) * | 1981-12-18 | 1984-07-31 | Cerac Inst Sa | Procede et moyens pour alimenter en energie electrique un outil portatif. |
| GB2117580B (en) * | 1982-03-23 | 1986-10-22 | Parker Louis William | Electronic commutation for direct current electric motors |
| GB2162389A (en) * | 1982-03-23 | 1986-01-29 | Parker Louis William | Electronic commutation for direct current electric motors |
| DE3230650A1 (de) * | 1982-08-13 | 1984-02-16 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schutzbeschaltung am lc-eingangsfilter eines leistungskreises fuer netze mit sprungartig wiederkehrender spannung |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3379955A (en) * | 1964-11-17 | 1968-04-23 | Lockheed Aircraft Corp | Apparatus for protecting the switching elements of static inverters from transient voltages |
| US3430123A (en) * | 1966-11-03 | 1969-02-25 | Gen Motors Corp | Rectifier-inverter motor power supply |
| US3525100A (en) * | 1967-08-03 | 1970-08-18 | Fmc Corp | Commutation circuit for inverter motor control system |
| FR96291E (fr) * | 1967-11-20 | 1972-06-16 | Telemecanique Electrique | Convertisseur a éléments semi-conducteurs commandés fournissant des impulsions a partir d'une source de tension continue. |
| US3593103A (en) * | 1969-03-04 | 1971-07-13 | Gen Electric | Inverter system with automatic ridethrough |
| US3568021A (en) * | 1969-05-15 | 1971-03-02 | Gen Electric | Low cost variable input voltage inverter with reliable commutation |
| JPS492928B1 (it) * | 1969-11-25 | 1974-01-23 | ||
| SE333186B (sv) * | 1970-05-15 | 1971-03-08 | Asea Ab | Vaexelriktare |
| US3652874A (en) * | 1970-07-30 | 1972-03-28 | Donald F Partridge | Circuit for controlling the conduction of a switching device |
| US3716775A (en) * | 1971-07-14 | 1973-02-13 | Gen Electric | Short circuit protection means for power circuits |
| US3793573A (en) * | 1972-09-28 | 1974-02-19 | Hitachi Ltd | Thyristor motor |
-
1972
- 1972-04-19 DE DE2219018A patent/DE2219018C3/de not_active Expired
-
1973
- 1973-04-05 AT AT298873A patent/AT321416B/de not_active IP Right Cessation
- 1973-04-06 CH CH498273A patent/CH548134A/xx not_active IP Right Cessation
- 1973-04-10 NL NL7304991A patent/NL7304991A/xx unknown
- 1973-04-10 SE SE7305045A patent/SE386027B/xx unknown
- 1973-04-16 NO NO1590/73A patent/NO134078C/no unknown
- 1973-04-16 GB GB1830273A patent/GB1404901A/en not_active Expired
- 1973-04-17 FR FR7314000A patent/FR2180925B1/fr not_active Expired
- 1973-04-17 AU AU54600/73A patent/AU475771B2/en not_active Expired
- 1973-04-18 CA CA169,103A patent/CA976229A/en not_active Expired
- 1973-04-18 IT IT7207/73A patent/IT982469B/it active
- 1973-04-18 US US00352204A patent/US3854078A/en not_active Expired - Lifetime
- 1973-04-18 BE BE130159A patent/BE798396A/xx unknown
- 1973-04-18 ZA ZA732672A patent/ZA732672B/xx unknown
- 1973-04-19 JP JP48044613A patent/JPS4916807A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU475771B2 (en) | 1976-09-02 |
| DE2219018C3 (de) | 1975-03-06 |
| NL7304991A (it) | 1973-10-23 |
| NO134078C (it) | 1976-08-11 |
| AU5460073A (en) | 1974-10-17 |
| DE2219018A1 (de) | 1973-10-31 |
| DE2219018B2 (de) | 1974-07-18 |
| CH548134A (de) | 1974-04-11 |
| FR2180925A1 (it) | 1973-11-30 |
| CA976229A (en) | 1975-10-14 |
| SE386027B (sv) | 1976-07-26 |
| AT321416B (de) | 1975-03-25 |
| GB1404901A (en) | 1975-09-03 |
| BE798396A (fr) | 1973-10-18 |
| US3854078A (en) | 1974-12-10 |
| JPS4916807A (it) | 1974-02-14 |
| NO134078B (it) | 1976-05-03 |
| FR2180925B1 (it) | 1976-05-28 |
| IT982469B (it) | 1974-10-21 |
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