ZA772708B - Improvements in or relating to a frequency converter - Google Patents
Improvements in or relating to a frequency converterInfo
- Publication number
- ZA772708B ZA772708B ZA00772708A ZA772708A ZA772708B ZA 772708 B ZA772708 B ZA 772708B ZA 00772708 A ZA00772708 A ZA 00772708A ZA 772708 A ZA772708 A ZA 772708A ZA 772708 B ZA772708 B ZA 772708B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- frequency converter
- converter
- frequency
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/519—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a push-pull configuration
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19533/76A GB1558596A (en) | 1976-05-12 | 1976-05-12 | Inverters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA772708B true ZA772708B (en) | 1978-04-26 |
Family
ID=10130973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA00772708A ZA772708B (en) | 1976-05-12 | 1977-05-05 | Improvements in or relating to a frequency converter |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4152759A (fi) |
| JP (1) | JPS52137632A (fi) |
| AU (1) | AU512512B2 (fi) |
| CA (1) | CA1082307A (fi) |
| DE (1) | DE2720942A1 (fi) |
| FI (1) | FI73545C (fi) |
| FR (1) | FR2351531A1 (fi) |
| GB (1) | GB1558596A (fi) |
| NO (1) | NO149870C (fi) |
| SE (1) | SE7705212L (fi) |
| SU (1) | SU1223850A3 (fi) |
| ZA (1) | ZA772708B (fi) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409465A (en) * | 1981-04-24 | 1983-10-11 | Osaka Transformer Co., Ltd. | Pulse arc welding method and device in which pulse current and background current have a constant current characteristic |
| DE3573374D1 (en) * | 1985-07-15 | 1989-11-09 | Kraftelektronik Ab | An electrostatic dust precipitator |
| US4769754A (en) * | 1987-07-27 | 1988-09-06 | Miller Electric Mfg., Co. | Stabilized welding power source including a series-resonant current-regulated converter using a transformer having an air-gapped core |
| GB2212677B (en) * | 1987-11-16 | 1992-07-22 | Sanyo Electric Co | An electric circuit for supplying controlled frequency electric power to a load |
| US6087626A (en) | 1998-02-17 | 2000-07-11 | Illinois Tool Works Inc. | Method and apparatus for welding |
| TW445192B (en) | 1999-04-12 | 2001-07-11 | Tri Tool Inc | Control method and apparatus for an arc welding system |
| US6698067B2 (en) * | 2002-01-30 | 2004-03-02 | Thomas & Betts International, Inc. | Locking strap with handling structure |
| US6713708B2 (en) | 2002-03-01 | 2004-03-30 | Arcon Welding Llc | Portable drawn arc stud welding apparatus and method providing high current output in short time intervals |
| FI116758B (fi) * | 2004-02-18 | 2006-02-15 | Abb Oy | Menetelmä ja järjestely taajuusmuuttajan välipiirin lataamiseksi |
| GB0610202D0 (en) * | 2006-05-23 | 2006-07-05 | Pepperl & Fuchs Gb Ltd | Electrical barrier |
| WO2011147460A1 (en) * | 2010-05-28 | 2011-12-01 | Esab Ab | Short arc welding system |
| KR101642548B1 (ko) * | 2010-05-28 | 2016-07-25 | 이에스에이비 아베 | 단락 아크 용접 시스템 |
| RU2470451C1 (ru) * | 2011-11-01 | 2012-12-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" | Однофазный полумостовой транзисторный инвертор |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL294965A (fi) * | 1962-07-09 | |||
| US3624483A (en) * | 1970-08-24 | 1971-11-30 | Honeywell Inf Systems | Switching regulator using low-voltage diodes |
| US3824441A (en) * | 1973-01-02 | 1974-07-16 | Honeywell Inf Systems | Multivoltage, regulated power supply with fault protection |
| US3852656A (en) * | 1974-04-19 | 1974-12-03 | Gen Motors Corp | Inverter fault protection and frequency limiting circuit |
| US4063306A (en) * | 1976-09-24 | 1977-12-13 | General Electric Company | Actively switched damping circuit |
-
1976
- 1976-05-12 GB GB19533/76A patent/GB1558596A/en not_active Expired
-
1977
- 1977-05-04 SE SE7705212A patent/SE7705212L/ unknown
- 1977-05-05 ZA ZA00772708A patent/ZA772708B/xx unknown
- 1977-05-10 FI FI771477A patent/FI73545C/fi not_active IP Right Cessation
- 1977-05-10 CA CA278,066A patent/CA1082307A/en not_active Expired
- 1977-05-10 DE DE19772720942 patent/DE2720942A1/de not_active Withdrawn
- 1977-05-10 US US05/795,502 patent/US4152759A/en not_active Expired - Lifetime
- 1977-05-11 FR FR7714363A patent/FR2351531A1/fr active Granted
- 1977-05-11 AU AU25067/77A patent/AU512512B2/en not_active Expired
- 1977-05-12 SU SU772480856A patent/SU1223850A3/ru active
- 1977-05-12 JP JP5380277A patent/JPS52137632A/ja active Granted
- 1977-05-13 NO NO771714A patent/NO149870C/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2351531B1 (fi) | 1984-05-04 |
| SU1223850A3 (ru) | 1986-04-07 |
| NO149870C (no) | 1984-07-04 |
| AU512512B2 (en) | 1980-10-16 |
| FI771477A (fi) | 1977-11-13 |
| FI73545C (fi) | 1987-10-09 |
| JPS52137632A (en) | 1977-11-17 |
| CA1082307A (en) | 1980-07-22 |
| US4152759A (en) | 1979-05-01 |
| FI73545B (fi) | 1987-06-30 |
| FR2351531A1 (fr) | 1977-12-09 |
| NO771714L (no) | 1978-05-25 |
| SE7705212L (sv) | 1977-11-13 |
| NO149870B (no) | 1984-03-26 |
| AU2506777A (en) | 1978-11-16 |
| JPS6137863B2 (fi) | 1986-08-26 |
| DE2720942A1 (de) | 1977-11-24 |
| GB1558596A (en) | 1980-01-09 |
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