CN201499123U - Excitation device for direct-current motor - Google Patents
Excitation device for direct-current motor Download PDFInfo
- Publication number
- CN201499123U CN201499123U CN2009201010560U CN200920101056U CN201499123U CN 201499123 U CN201499123 U CN 201499123U CN 2009201010560 U CN2009201010560 U CN 2009201010560U CN 200920101056 U CN200920101056 U CN 200920101056U CN 201499123 U CN201499123 U CN 201499123U
- Authority
- CN
- China
- Prior art keywords
- pin
- exciting current
- resistance
- current
- current controller
- 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 - Fee Related
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model discloses an excitation device for a direct-current motor. The excitation device comprises a voltage isolated amplifier, a field current regulator, a trigger shaper, a silicon controllable rectifier and a current sensor; the silicon controllable rectifier is serially connected between a power supply and a direct-current motor excitation coil; and a control electrode of the silicon controllable rectifier is connected with the trigger shaper; the field current regulator is connected with the front end of the trigger shaper; the current sensor and the voltage isolated amplifier are respectively connected with the front end of the field current regulator; the current sensor is connected to a power cord in series, and the front end of the voltage isolated amplifier is connected with a direct-current motor armature coil; a field current given manual button and a non-independent weak magnetic control switching button are arranged on the field current regulator; the stability of field current under the conditions of change of excitation coil resistance caused by temperature rise and power supply voltage variation within a large range is guaranteed through the steady current control.
Description
Technical field
The utility model relates to a kind of DC motor excitation unit, belongs to motor industry technology field.
Background technology
Present DC motor excitation unit nearly all is to exist as the annex of dc motor speed regulating device, and seldom seeing becomes product separately, and function is simple, mostly is voltage control, can only adapt to the application scenario of fixed power source voltage.The control of field supply all is fixing or the weak magnetic control system of non-independence.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of DC motor excitation unit, by with the current stabilization technology, manually control and the automatic technical scheme that combines of controlling, solved to supply voltage adapt to automatically, the stable and back-emf FEEDBACK CONTROL of exciting current, be about to the combination of independent adjustable magnetic and automatic weak-magnetic and be made into stand-alone product, select for the user.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of DC motor excitation unit, it is made up of voltage isolation amplifier, exciting current controller, trigger shaper, silicon controlled rectifier, current sensor.Silicon controlled rectifier is connected in the middle of power supply and the DC motor magnet exciting coil, the silicon controlled rectifier control utmost point is connected with trigger shaper, the trigger shaper front end is connected with exciting current controller, the exciting current controller front end is connected with current sensor, voltage isolation amplifier respectively, current sensor is serially connected on the power line, voltage isolation amplifier front end is connected with DC motor armature coil, magnetic control system release knob a little less than being provided with given manual button of exciting current and non-independence on the exciting current controller.Described voltage isolation amplifier, it is by hall effect sensor TV1, two-stage active low-pass filter N2A, N2B, resistance, electric capacity constitutes, the armature signal enters the 1st of hall effect sensor TV1 by capacitor C 10 filtering, 2 pin, the 4th of TV1,5 pin ground connection, the 3rd pin of TV1 is by resistance R 5, R6, R8, R10, C7 are connected to the 3rd pin of active low-pass filter N2A, the 4th of N2A, 5 pin ground connection, the 1st pin of N2A is connected with the 6th pin of active low-pass filter N2B by resistance R 26, the 5th pin ground connection of N2B, and the 7th pin outputs signal to exciting current controller.Wherein the 1st pin of N2A and the 2nd pin are connected to feedback resistance R14 and R11, also are connected to feedback capacity C8 between the 1st pin and the resistance R 10; Be connected to feedback resistance R27 between the 7th pin of N2B and the 6th pin.The operation principle of this DC motor excitation unit is: exciting current control is adopted at the interchange inlet wire and is added current transformer detection current actual value, convert voltage signal to by load resistance, compare with the given signal of exciting current, regulate by exciting current controller, by trigger shaper voltage signal is transformed into pulse signal, the angle of flow of control thyristor (controllable silicon) is to adjust the excitation output current.Owing to adopt Current Regulation, when mains voltage variations, magnet exciting coil because variations in temperature causes the variation of resistance value, it is constant that exciting current is stablized.The armature voltage isolated amplifier has adopted the voltage isolation amplifier of making of hall effect sensor, adapt to voltage range by adjusting input series impedance and the adjustment of output load resistance value, then adopt the active low-pass filter elimination to desire the ripple of isolation voltage, obtain a voltage signal that is proportional to armature voltage, be used to control exciting current simultaneously by exciting current controller and trigger shaper.Realize the selection of magnetic control system and independent weak magnetic control system a little less than the non-independence by the given manual button of magnetic control system release knob and exciting current a little less than the non-independence.
The beneficial effects of the utility model are: adopt the current stabilization control of Current Regulation technology, guarantee on a large scale mains voltage variations, because the exciting current under the field resistance situation of change that temperature rise causes is stable.The weak magnetic control system of non-independence and independent weak two kinds of control modes of magnetic control system have been adopted.Reasonable in design, control stabilization, applied widely, application value is arranged.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified
Fig. 1 is the frame structure schematic diagram of a kind of DC motor excitation unit of the utility model.
Fig. 2 is the voltage isolation amplifier electrical schematic diagram of Fig. 1.
Number in the figure
1, silicon controlled rectifier 2, trigger shaper
3, exciting current controller 4, current sensor
5, voltage isolation amplifier 6, the given manual button of exciting current
7, the weak magnetic control system release knob 8 of non-independence, DC motor magnet exciting coil
9, DC motor armature coil
Embodiment
See also Fig. 1, Fig. 2, a kind of DC motor excitation unit, it is made up of voltage isolation amplifier, exciting current controller, trigger shaper, silicon controlled rectifier, current sensor.Silicon controlled rectifier (1) is connected in the middle of power supply and the DC motor magnet exciting coil (8), silicon controlled rectifier (1) the control utmost point is connected with trigger shaper (2), trigger shaper (2) front end is connected with exciting current controller (3), exciting current controller (3) front end respectively with current sensor (4), voltage isolation amplifier (5) is connected, current sensor (4) is serially connected on the power line, voltage isolation amplifier (5) front end is connected with DC motor armature coil (9), is provided with the weak magnetic control system release knob (7) of given manual button of exciting current (6) and non-independence on exciting current controller (3).Described voltage isolation amplifier (5), it is by hall effect sensor TV1, two-stage active low-pass filter N2A, N2B, resistance, electric capacity constitutes, the armature signal enters the 1st of hall effect sensor TV1 by capacitor C 10 filtering, 2 pin, the 4th of TV1,5 pin ground connection, the 3rd pin of TV1 is by resistance R 5, R6, R8, R10, C7 are connected to the 3rd pin of active low-pass filter N2A, the 4th of N2A, 5 pin ground connection, the 1st pin of N2A is connected with the 6th pin of active low-pass filter N2B by resistance R 26, the 5th pin ground connection of N2B, and the 7th pin outputs signal to exciting current controller.Wherein the 1st pin of N2A and the 2nd pin are connected to feedback resistance R14 and R11, also are connected to feedback capacity C8 between the 1st pin and the resistance R 10; Be connected to feedback resistance R27 between the 7th pin of N2B and the 6th pin.
Claims (2)
1. DC motor excitation unit, it is made up of voltage isolation amplifier, exciting current controller, trigger shaper, silicon controlled rectifier, current sensor; It is characterized in that: silicon controlled rectifier (1) is connected in the middle of power supply and the DC motor magnet exciting coil (8), silicon controlled rectifier (1) the control utmost point connects trigger shaper (2), trigger shaper (2) front end connects exciting current controller (3), exciting current controller (3) front end respectively with current sensor (4), voltage isolation amplifier (5) is connected, current sensor (4) is serially connected on the power line, voltage isolation amplifier (5) front end is connected with DC motor armature coil (9), is provided with the weak magnetic control system release knob (7) of given manual button of exciting current (6) and non-independence on exciting current controller (3).
2. a kind of DC motor excitation unit according to claim 1 is characterized in that: described voltage isolation amplifier (5) is by hall effect sensor TV1, two-stage active low-pass filter N2A, and N2B, resistance, electric capacity constitute; The armature signal enters the 1st, 2 pin of hall effect sensor TV1 by capacitor C 10 filtering, the 4th, the 5 pin ground connection of TV1, the 3rd pin of TV1 is by resistance R 5, R6, R8, R10, C7 is connected to the 3rd pin of active low-pass filter N2A, the 4th, the 5 pin ground connection of N2A, and the 1st pin of N2A is connected with the 6th pin of active low-pass filter N2B by resistance R 26, the 5th pin ground connection of N2B, the 7th pin outputs signal to exciting current controller; Wherein the 1st pin of N2A and the 2nd pin are connected to feedback resistance R14 and R11, also are connected to feedback capacity C8 between the 1st pin and the resistance R 10, are connected to feedback resistance R27 between the 7th pin of N2B and the 6th pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201010560U CN201499123U (en) | 2009-09-29 | 2009-09-29 | Excitation device for direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201010560U CN201499123U (en) | 2009-09-29 | 2009-09-29 | Excitation device for direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201499123U true CN201499123U (en) | 2010-06-02 |
Family
ID=42442319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201010560U Expired - Fee Related CN201499123U (en) | 2009-09-29 | 2009-09-29 | Excitation device for direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201499123U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860311A (en) * | 2010-06-07 | 2010-10-13 | 苏州能健电气有限公司 | Drive device of series DC machine for pitch control system |
-
2009
- 2009-09-29 CN CN2009201010560U patent/CN201499123U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860311A (en) * | 2010-06-07 | 2010-10-13 | 苏州能健电气有限公司 | Drive device of series DC machine for pitch control system |
| CN101860311B (en) * | 2010-06-07 | 2012-01-11 | 苏州能健电气有限公司 | Drive device of series DC machine for pitch control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107546981B (en) | A kind of power circuit | |
| CN202133921U (en) | Adjustable constant-current and constant-voltage power supply | |
| CN201499123U (en) | Excitation device for direct-current motor | |
| CN203608093U (en) | Three-phase AC compensation type regulated power supply | |
| CN104407660B (en) | Online integrated high precision constant current source | |
| CN103036501A (en) | Upper alternating current fan speed regulating system of gas water heater | |
| CN201611451U (en) | Intelligent digital control/display DC regulated power supply | |
| CN206481218U (en) | A kind of power circuit | |
| CN104270006A (en) | BUCK circuit-based current driver | |
| CN203926087U (en) | Gas water-heater DC fan control gear | |
| CN203368391U (en) | AC generator voltage regulating apparatus | |
| CN201298178Y (en) | Mainboard power supply circuit of automatic coupling voltage regulating type AC stabilized voltage power supply | |
| CN110171018A (en) | Robot motor starts control device | |
| CN204319154U (en) | For heating control circuit and the heat preserving table of heat preserving table | |
| CN203734534U (en) | Current driver based on BUCK circuit | |
| ATE420488T1 (en) | DEVICE FOR CONTROLLING THE POWER FACTOR | |
| CN203014734U (en) | AC fan speed regulation circuit device on gas water heater | |
| CN201278454Y (en) | Novel current limiting device | |
| CN206041861U (en) | Automatic voltage regulation circuit on rolling slats door current motor controller | |
| CN205068208U (en) | Numerical control type ac voltage stabilizer | |
| CN203930565U (en) | A kind of linear voltage regulator | |
| CN201994867U (en) | Constant-current adjustable power supply | |
| CN203434911U (en) | Signal compensation circuit of automatic excitation voltage regulator of small generator | |
| CN201837872U (en) | Intelligent control load system | |
| CN201233546Y (en) | Voltage regulating, stabilizing circuit for self-coupling transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20170929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |