JPS576594A - Field-weakening control circuit for motor - Google Patents
Field-weakening control circuit for motorInfo
- Publication number
- JPS576594A JPS576594A JP7779580A JP7779580A JPS576594A JP S576594 A JPS576594 A JP S576594A JP 7779580 A JP7779580 A JP 7779580A JP 7779580 A JP7779580 A JP 7779580A JP S576594 A JPS576594 A JP S576594A
- Authority
- JP
- Japan
- Prior art keywords
- contactor
- weakening
- command
- currents
- field
- 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.)
- Pending
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
- H02P7/282—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 field supply only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE:To control a contactor for weakening a field system easily by a method wherein command signals making the flowing rate of the output of a phase shifter constant after turning a bypass contactor on and are compared with a prescribed value, and the contactor for weakening the field system is opened when the command signals are larger. CONSTITUTION:When bypass contactor turn-on signals 21 are generated in a speed control circuit having the bypass contactor in parallel with a chopper circuit and the contactor for weakening the field system in parallel with a series field coil, a circuit controlling command currents i is mounted so that the flowing rate of an output waveform of the magnetic phase shifter 14 is made constant without regarding to an accelerator command. Here, the command currents i are detected by means of a resistor R3 and compared with the prescribed value because the command currents i are proportioned to the armature currents of the DC motor to be controlled. When the command currents are smaller, a transistor TR3 is ON, a field-weakening contactor coil 23 is conducted and the contactor for weakening the field system is turned on. When the currents are larger, the conduction of the coil 23 is interrupted, and the contactor for weakening the field system is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7779580A JPS576594A (en) | 1980-06-11 | 1980-06-11 | Field-weakening control circuit for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7779580A JPS576594A (en) | 1980-06-11 | 1980-06-11 | Field-weakening control circuit for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS576594A true JPS576594A (en) | 1982-01-13 |
Family
ID=13643920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7779580A Pending JPS576594A (en) | 1980-06-11 | 1980-06-11 | Field-weakening control circuit for motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS576594A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0740409A2 (en) * | 1995-04-29 | 1996-10-30 | Samsung Heavy Industries Co., Ltd | Over drive control apparatus of direct current series motor |
-
1980
- 1980-06-11 JP JP7779580A patent/JPS576594A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0740409A2 (en) * | 1995-04-29 | 1996-10-30 | Samsung Heavy Industries Co., Ltd | Over drive control apparatus of direct current series motor |
| EP0740409A3 (en) * | 1995-04-29 | 1998-08-26 | Samsung Heavy Industries Co., Ltd | Over drive control apparatus of direct current series motor |
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