GB1212029A - A control arrangement for controlling a single-phase/polyphase direct converter connected to a single-phase mains supply for the generation of an output voltage composed of complete half-cycles - Google Patents
A control arrangement for controlling a single-phase/polyphase direct converter connected to a single-phase mains supply for the generation of an output voltage composed of complete half-cyclesInfo
- Publication number
- GB1212029A GB1212029A GB5780867A GB5780867A GB1212029A GB 1212029 A GB1212029 A GB 1212029A GB 5780867 A GB5780867 A GB 5780867A GB 5780867 A GB5780867 A GB 5780867A GB 1212029 A GB1212029 A GB 1212029A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- output
- thyristors
- cycles
- phase supply
- 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
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
- H02M5/02—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 without intermediate conversion into dc
- H02M5/04—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 without intermediate conversion into dc by static converters
- H02M5/22—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 without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/25—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 without intermediate conversion into dc 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
- H02M5/27—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 without intermediate conversion into dc 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 for conversion of frequency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Ac-Ac Conversion (AREA)
- Electrotherapy Devices (AREA)
Abstract
1,212,029. Converting; control of A.C. motors. VILLAMOSIPARI. KUTATO INTEZET. 20 Dec., 1967 [20 Dec., 1966], No. 57808/67. Headings H2F and H2J] A single-phase/polyphase converter for the generation of an output voltage composed of complete half-cycles is controlled by a triggering circuit A supplied with polyphase signals from a ring counter B, a logic circuit supplied from the single-phase supply and from the outputs of the ring counter being provided to delay triggering of the conveter until the waveform of the single phase supply passes through zero. This ensures that the output b, Fig 2, contains only complete half cycles of the single phase supply. Fig. 1 (not shown) relates to six pairs of thyristors connected across a centre tapped secondary of a single phase transformer, the thyristors feeding the split stator windings of a three-phase synchronous motor. The thyristors are triggered by circuits 1g-6g controlled by NOR gate 21-26<SP>1</SP> each having three inputs respectively supplied with antiphase square waves derived at 20 from the single-phase supply, with the output of a ring counter B driven by a pulse generator 10 at a frequency determined by input voltage Uf and by the output of an inhibiting circuit C consisting of a monostable circuit 30 triggered by the single phase supply, NOR gates 11-16 and bi-stable multivibrators 27-29. The inhibiting circuit C prevents periodic short circuits caused by the inductive coupling of the split stator windings when two thyristors are simultaneously triggered. This enables the output frequency to be raised to 80-90% of the single-phase frequency.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUVI000530 | 1966-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1212029A true GB1212029A (en) | 1970-11-11 |
Family
ID=11002573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5780867A Expired GB1212029A (en) | 1966-12-20 | 1967-12-20 | A control arrangement for controlling a single-phase/polyphase direct converter connected to a single-phase mains supply for the generation of an output voltage composed of complete half-cycles |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT293549B (en) |
| BE (1) | BE708268A (en) |
| CH (1) | CH465052A (en) |
| DE (1) | DE1638939B2 (en) |
| GB (1) | GB1212029A (en) |
| SE (1) | SE339719B (en) |
-
1967
- 1967-12-12 AT AT1120567A patent/AT293549B/en not_active IP Right Cessation
- 1967-12-13 CH CH1757667A patent/CH465052A/en unknown
- 1967-12-14 SE SE1719667A patent/SE339719B/xx unknown
- 1967-12-14 DE DE1967V0035012 patent/DE1638939B2/en active Granted
- 1967-12-20 GB GB5780867A patent/GB1212029A/en not_active Expired
- 1967-12-20 BE BE708268D patent/BE708268A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1638939A1 (en) | 1971-01-21 |
| BE708268A (en) | 1968-05-02 |
| CH465052A (en) | 1968-11-15 |
| SE339719B (en) | 1971-10-18 |
| DE1638939B2 (en) | 1977-07-07 |
| AT293549B (en) | 1971-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |