GB1513799A - Four-quadrant static converter - Google Patents
Four-quadrant static converterInfo
- Publication number
- GB1513799A GB1513799A GB32147/75A GB3214775A GB1513799A GB 1513799 A GB1513799 A GB 1513799A GB 32147/75 A GB32147/75 A GB 32147/75A GB 3214775 A GB3214775 A GB 3214775A GB 1513799 A GB1513799 A GB 1513799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thyristors
- pulses
- control
- bridge
- motor
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/75—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with 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
- H02M7/757—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with 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
-
- 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
- H02M5/257—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 using semiconductor devices only
- H02M5/2573—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 using semiconductor devices only with control circuit
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
1513799 Converting; control of DC motors LICENTIA PATENT VERWALTUNGS GmbH 31 July 1975 [6 Aug 1974] 32147/75 Headings H2F and H2J A four-quadrant static converted comprises a bridge circuit, each limb of which contains a bidirectional thyristor, a control device and multiple pulse generator for producing control pulses, wherein the control device includes switch means for reversing the current without mechanical interruption of the converter circuit by switching respective sets of control pulses to respective sets of thyristors each thyristor set corresponding to a respective polarity of the AC input to the converter, to obtain one direction of current and then switching to interchange the sets of pulses and thyristors to obtain reverse current. In Figure 1, a DC motor M is supplied from a bridge comprising bidirectional thyristors 11-14 connected to one phase RS of a three phase supply and switched in synchronism therewith. Control pulses to fire the thyristors 11-14 are obtained from a control device 2 consisting of a two-pulse generator 21 feeding the primary windings 221, 222 of two pulse transformers, whose secondary windings 221<SP>1</SP>, 221<SP>11</SP>, 222<SP>1</SP>, 222<SP>11</SP> produce pulses T1-T4 which are applied to the thyristors 11-14 through the contacts 231, 232, 233, 234 of two relays, whose coils 2412, 2434 are energised or de-energised by operation of a switch 25<SP>1</SP> controlled by a command stage 25 of a programme transmitter. With the switch 25<SP>1</SP> in the position shown, the relay contacts route the pulses T1, T4 to thyristors 11, 14 and the pulses T2, T3 to thyristors 12, 13 in respective positive and negative half cycles of the AC supply, whereby the motor rotates in a clockwise direction. Changeover of switch 25<SP>1</SP> changes over the moving contacts of the relays to route the pulses T1, T4 to thyristors 12, 13 and pulses T2, T3 to thyristors 11, 14, whereby the bridge output is reversed to drive the motor anti-clockwise. The two relays may be replaced by one having a single coil controlling eight contacts or by electronic switch means. The bridge may have six arms each with a bidirectional thyristor for operation on a three phase supply. Operation of the single phase embodiment of Figure 1 is discussed for a firing angle of 90‹, Figure 2a (not shown), for variation of this angle over a range to vary the voltage applied to the motor, and for variation of this angle to operate the bridge as mainscontrolled inverter whereby the motor is regeneratively braked. To prevent mal-operation during the latter condition, due to one set of thyristors (e.g. 12, 13) being fired before the other set 14, 11 have quenched, firing of the thyristors 12, 13 is delayed by a limit g corresponding to the angle # of current zero, Fig. 2c (not shown) and firing of the thyristors 11, 14 is prevented after a second limig g<SP>1</SP> to ensure that they are quenched by the limit g, the period g<SP>1</SP> g, Fig. 2a (not shown) defining a safety interval in the form of a short dead time. The state of the thyristors is monitored to control switch over of the control pulses and so obtain the required dead time.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2437746A DE2437746A1 (en) | 1974-08-06 | 1974-08-06 | EXTERNAL CONTROLLED MULTIPULSE FOUR-QUADRANT CONVERTER WITH THYRISTORS |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1513799A true GB1513799A (en) | 1978-06-07 |
Family
ID=5922523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB32147/75A Expired GB1513799A (en) | 1974-08-06 | 1975-07-31 | Four-quadrant static converter |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH590586A5 (en) |
DE (1) | DE2437746A1 (en) |
FR (1) | FR2281668A1 (en) |
GB (1) | GB1513799A (en) |
IT (1) | IT1040446B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100456625C (en) * | 2005-08-26 | 2009-01-28 | 大银微***股份有限公司 | Inductive load control device |
-
1974
- 1974-08-06 DE DE2437746A patent/DE2437746A1/en not_active Withdrawn
-
1975
- 1975-07-31 GB GB32147/75A patent/GB1513799A/en not_active Expired
- 1975-08-01 CH CH1010475A patent/CH590586A5/xx not_active IP Right Cessation
- 1975-08-05 IT IT26160/75A patent/IT1040446B/en active
- 1975-08-06 FR FR7524556A patent/FR2281668A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100456625C (en) * | 2005-08-26 | 2009-01-28 | 大银微***股份有限公司 | Inductive load control device |
Also Published As
Publication number | Publication date |
---|---|
FR2281668A1 (en) | 1976-03-05 |
DE2437746A1 (en) | 1976-02-26 |
IT1040446B (en) | 1979-12-20 |
CH590586A5 (en) | 1977-08-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |