GB1154076A - Improvements in or relating to Devices having Stabilised D.C. Motors. - Google Patents
Improvements in or relating to Devices having Stabilised D.C. Motors.Info
- Publication number
- GB1154076A GB1154076A GB54356/67A GB5435667A GB1154076A GB 1154076 A GB1154076 A GB 1154076A GB 54356/67 A GB54356/67 A GB 54356/67A GB 5435667 A GB5435667 A GB 5435667A GB 1154076 A GB1154076 A GB 1154076A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rectifier
- motor
- diode
- gate
- armature
- 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
- 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
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
- H02P7/293—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC using phase control
Abstract
1,154,076. Control of D.C. motors. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 29 Nov., 1967 [2 Dec., 1966], No. 54356/67. Heading H2J. [Also in Division G3] A D.C. Motor 3 is supplied from A.C. source 4 through a controlled rectifier 1, the speed being stabilized by feeding back a signal representing the armature voltage to the gate circuit of the rectifier, the cathode of the rectifier 1 being connected to the cathode of a diode 2 through which the motor is supplied during alternate half-cycles of the supply, the gate of the rectifier 1 being connectible through diode 14 to the upper armature terminal. The anodes of the rectifiers 1, 2 are connectible to respective tappings in a supply transformer the upper armature terminal being connectible to an intermediate tapping 7. High-speed operation of the motor is provided when switches 12, 15 are in their upper positions, the motor being supplied through tappings 10 or 11 and current-limiting resistors 17 or 18 in accordance with the position of a change-over switch 16. The gate of the rectifier 1 is then connected to its anode for operation as an uncontrolled diode. In the lower positions of the switches 12, 15, the voltage across the motor is fed back through diode 14, between the gate and cathode of the rectifier 1. If the speed is excessive, rectifier 1 becomes blocked and the motor is fed only through the diode 2. A temporary reduction of armature current causes the rectifier 1 to become non- conductive for a number of periods until the armature current is restored to its former value whereupon the controlled rectifier conducts for a number of half-periods, as required for maintaining the speedat a substantially constant value. In a modification the rectifier 1 remains out of operation when the switches 12, 15 are in their upper positions, the motor being fed through resistor 17 or 18 and diode 2. In a further embodiment, the rectifiers 1, 2 are included in a bridge circuit comprising third and fourth diodes. An inductor provided with tappings is connected in the bridge circuit to adjust the no-load current of the motor. The motor may be of the shunt type, or may have a series field winding which is not, however, included in the control circuit of the rectifier 1. A variable resistor may be connected in series with the diode 14.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6616968A NL6616968A (en) | 1966-12-02 | 1966-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1154076A true GB1154076A (en) | 1969-06-04 |
Family
ID=19798364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB54356/67A Expired GB1154076A (en) | 1966-12-02 | 1967-11-29 | Improvements in or relating to Devices having Stabilised D.C. Motors. |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS457460B1 (en) |
| AT (1) | AT284971B (en) |
| BE (1) | BE707376A (en) |
| CH (1) | CH468119A (en) |
| DE (1) | DE1588594A1 (en) |
| GB (1) | GB1154076A (en) |
| NL (1) | NL6616968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2272338A (en) * | 1992-11-10 | 1994-05-11 | Dee Electronics Limited | Speed controller for electric motor |
-
1966
- 1966-12-02 NL NL6616968A patent/NL6616968A/xx unknown
-
1967
- 1967-11-08 DE DE19671588594 patent/DE1588594A1/en active Pending
- 1967-11-29 AT AT1077667A patent/AT284971B/en not_active IP Right Cessation
- 1967-11-29 GB GB54356/67A patent/GB1154076A/en not_active Expired
- 1967-11-29 CH CH1677367A patent/CH468119A/en unknown
- 1967-11-30 BE BE707376D patent/BE707376A/xx unknown
- 1967-12-01 JP JP7678067A patent/JPS457460B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2272338A (en) * | 1992-11-10 | 1994-05-11 | Dee Electronics Limited | Speed controller for electric motor |
Also Published As
| Publication number | Publication date |
|---|---|
| AT284971B (en) | 1970-10-12 |
| CH468119A (en) | 1969-01-31 |
| BE707376A (en) | 1968-05-30 |
| NL6616968A (en) | 1968-06-04 |
| JPS457460B1 (en) | 1970-03-14 |
| DE1588594A1 (en) | 1970-12-23 |
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