CN201063571Y - Fast braking circuit of electric machine - Google Patents
Fast braking circuit of electric machine Download PDFInfo
- Publication number
- CN201063571Y CN201063571Y CNU2007200233331U CN200720023333U CN201063571Y CN 201063571 Y CN201063571 Y CN 201063571Y CN U2007200233331 U CNU2007200233331 U CN U2007200233331U CN 200720023333 U CN200720023333 U CN 200720023333U CN 201063571 Y CN201063571 Y CN 201063571Y
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- China
- Prior art keywords
- series excited
- excited machine
- winding
- normally
- braking
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- Expired - Fee Related
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Abstract
The utility model provides a quick braking circuit for a series excited machine, which belongs to the motor drive control technique. The quick braking circuit consists of a solenoid switch with two normally-open contacts and one normally-closed contact which are locked with one another and a braking winding, wherein, one end of the braking winding is connected with one end of an armature winding of the series excited machine; the other end of the braking winding is connected with the other end of the armature winding of the series excited machine through the normally-closed contact of the solenoid switch. Two power supply terminals of the series excited machine are respectively connected to a single-phase source through the two normally-open contacts of the series excited machine. The two ends of two stator windings are connected in parallel with a set of delta capacitor. The circuit which has great brake moment and quick brake process, is more reliable and safe and can greatly reduce the accidents of workpiece damage or human injury and the electromagnetic interference of the excited machine on an electric network. The quick braking circuit can be widely applicable to various single-phase series excited machines.
Description
Technical field
The utility model belongs to the control field of series excited machine, and more particularly, it relates to a kind of series excited machine fast braking circuit, belongs to the improvement to the brake apparatus of series excited machine.
Background technology
Series excited machine is widely used on the electric tools such as carpenter's chain saw, annular saw, band saw and hay mover, sanding machine.Because traditional individual event series excited machine braking moment is little, to brake slowlyer, after the outage, the mechanical part of these electric tools finally quits work from running up under action of inertia, and required time is longer.Like this, the inertia motion of the workpiece of electric tool after outage is easy to defective work piece, also may damage, so the mechanical part of braking electric tool in the back of cutting off the electricity supply rapidly is essential to eliminate safe hidden trouble tool operator or other people.In addition, traditional single phase series motivated motor all is to carry out work by normal sinusoidal magnetic field, and serious interference is caused to electrical network in magnetic field, causes power grid quality to descend.
The utility model content
1, goal of the invention: at above-mentioned shortcoming and defect, the technical problems to be solved in the utility model is for series excited machine designs a kind of control circuit, to realize quick, the safety arrestment of series excited machine, reduces the generation of situations such as workpiece damage and personal injury, simultaneously, reduction is to the interference of electrical network.
2, technical scheme: for achieving the above object, the utility model is made up of the electromagnetic switch and the brake winding of two normally open contacts and a normally closed interlock, two normally open contacts and a normally closed interlock interlocking.Two power supply terminals of series excited machine are connected on the single phase poaer supply through two normally open contacts of electromagnetic switch respectively, one end of brake winding is connected an end of series excited machine armature winding, and the other end of brake winding closes the other end that contact is connected series excited machine armature winding through the length of electromagnetic switch.
Operation principle of the present utility model is: energized, during series excited machine work, two normally open contacts of electromagnetic switch are closure state, connect with single phase poaer supply, make motor rotation.At this moment, its length is closed contact and is then disconnected, thereby will brake the winding excision.Under the situation of being braked by moment in the series excited machine outage, two normally open contacts of electromagnetic switch transfer off-state to by closure state, thereby with dump.Meanwhile, normally closed interlock then transfers closure state to by off-state rapidly, thereby makes brake winding and armature winding series connection form the closed-loop path.This closed-loop path can produce reverse induced current under the excitation in the residual electricity magnetic field that the series excited machine iron core is produced, form opposing torque, and motor is braked rapidly, quits work.
Simultaneously, the two ends of two stator winding of series excited machine and one group of triangle electric capacity are in parallel, and triangle electric capacity in parallel can play the effect of shielding electromagnetism, like this since, just can significantly reduce the electromagnetic interference that series excited machine causes electrical network.
Task of the present utility model comes to this and finishes.
3, beneficial effect: in terms of existing technologies, the utility model advantage is: for series excited machine provides a kind of braking moment big control circuit, thereby the braking procedure that makes series excited machine is quick and safe and reliable, reduced the potential safety hazard of electric tool in braking procedure, and, the utility model can reduce the electromagnetic interference to electrical network, and applicability is widely arranged in practical operation.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The fast braking circuit of 1. 1 kinds of series excited machines of embodiment, as shown in Figure 1.This control circuit is connected on the series excited machine, and by having two normally open contact 1-2,3-4 and a normally closed interlock 5-6, the electromagnetic switch (1) of two normally open contact 1-2,3-4 and normally closed interlock 5-6 interlocking and brake winding (2) are formed.Two power supply terminals (4) of series excited machine and (5) are connected on the single phase poaer supply through two normally open contact 1-2,3-4 of electromagnetic switch (1) respectively, one end (6) of its brake winding (2) is connected an end of the armature winding (3) of series excited machine, and the other end (7) of brake winding (2) is connected the other end of the armature winding (3) of series excited machine through the normally closed interlock 5-6 of electromagnetic switch (1).Two ends and one group of triangle electric capacity (9) of two stator winding (8) of series excited machine are in parallel, and play electromagnetic shielding action, can significantly reduce the electromagnetic interference of series excited machine to electrical network.
Claims (2)
1. the fast braking circuit of a series excited machine, this braking circuit is connected on the series excited machine, its notable feature is by having two normally open contacts, a normally closed interlock, the electromagnetic switch of two normally open contacts and a normally closed interlock interlocking and brake winding are formed, two supply terminalss of series excited machine are connected on the single phase poaer supply through two normally open contacts of electromagnetic switch respectively, one end of brake winding is connected an end of series excited machine armature winding, and an other end of brake winding is connected the other end of series excited machine armature winding through the normally closed interlock of electromagnetic switch.
2. according to the fast braking circuit of the described series excited machine of claim 1, it is characterized in that the two ends of said series excited motor stator winding also are in parallel with one group of triangle electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200233331U CN201063571Y (en) | 2007-06-13 | 2007-06-13 | Fast braking circuit of electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200233331U CN201063571Y (en) | 2007-06-13 | 2007-06-13 | Fast braking circuit of electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201063571Y true CN201063571Y (en) | 2008-05-21 |
Family
ID=39451957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200233331U Expired - Fee Related CN201063571Y (en) | 2007-06-13 | 2007-06-13 | Fast braking circuit of electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201063571Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332854A (en) * | 2011-09-15 | 2012-01-25 | 常熟市美益电磁控制元件有限公司 | Beakdown braking device connected with motor in series |
| CN103240983A (en) * | 2012-02-10 | 2013-08-14 | 海德堡印刷机械股份公司 | Machine controller |
-
2007
- 2007-06-13 CN CNU2007200233331U patent/CN201063571Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332854A (en) * | 2011-09-15 | 2012-01-25 | 常熟市美益电磁控制元件有限公司 | Beakdown braking device connected with motor in series |
| CN103240983A (en) * | 2012-02-10 | 2013-08-14 | 海德堡印刷机械股份公司 | Machine controller |
| CN103240983B (en) * | 2012-02-10 | 2016-06-29 | 海德堡印刷机械股份公司 | Equipment control device |
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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: 20080521 Termination date: 20160613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |