CN210110592U - Direct-current excitation driving device of automatic change-over switch - Google Patents
Direct-current excitation driving device of automatic change-over switch Download PDFInfo
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- CN210110592U CN210110592U CN201920363000.6U CN201920363000U CN210110592U CN 210110592 U CN210110592 U CN 210110592U CN 201920363000 U CN201920363000 U CN 201920363000U CN 210110592 U CN210110592 U CN 210110592U
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- 230000005284 excitation Effects 0.000 title claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 34
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Abstract
The utility model discloses an automatic change over switch's direct current excitation drive arrangement, include drive arrangement and power supply circuit as the main part, drive arrangement's input be connected with steady voltage energy storage module, drive arrangement's output be connected with the control end of electro-magnet, steady voltage energy storage module and power supply circuit between be equipped with the rectification part, power supply circuit constitute by live wire L and zero line N. The utility model overcomes there are the unstable and relatively poor problem of driving force of drive voltage in the traditional automatic transfer switch who exists among the prior art. The utility model has the advantages of circuit transport stability is high, circuit transport efficiency is high and the switch execution speed is fast.
Description
Technical Field
The utility model relates to a switch field, more specifically say, relate to an automatic change over switch's direct current excitation drive arrangement.
Background
In order to ensure the reliability of power supply in a circuit, a plurality of important loads need double-circuit power supply at present, and an automatic transfer switching device is used as an automatic switching device between the two power supplies and is widely applied to a double-circuit power supply distribution system. In order to realize the automatic switching between two power supplies, the automatic change-over switch must be driven by a corresponding switching device.
At present, automatic transfer switches are classified according to their switching modes, and can be roughly classified into a motor driving mode and an excitation driving mode. The motor driving mode is mainly applied to derivative products, the whole switching process mainly depends on the rotation of a motor to drive the switching between two paths of power supplies, the switching time is generally between 1000ms and 2500ms, and the switching time is longer; the excitation drive utilizes the ferromagnetic effect of an electromagnet to drive the switching, and has the biggest characteristic of high switching speed, generally between 50ms and 250 ms. However, in order to realize rapid switching, tens of times of driving current is required to realize switching compared with a motor driving mode, so that phenomena such as arcing, heating, adhesion and the like of mechanical contacts of a driving relay are often caused, and the excitation coil can not be normally powered off and burnt out in serious cases. In addition, the exciting coil is generally a dc coil, but the power supply for driving the exciting coil is generally a full-wave rectified pulsating dc power supply and contains a large ac component, and the time of the entire switching and the time of the drive trigger have a large relationship, and the time uniformity is very poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the traditional automatic change over switch that exists among the prior art and have the unstable and relatively poor problem of driving force of driving voltage, provide an automatic change over switch's direct current excitation drive arrangement who has advantages such as driving voltage stability and driving force are strong now.
The utility model discloses an automatic change over switch's direct current excitation drive arrangement, include drive arrangement and power supply circuit as the main part, drive arrangement's input be connected with steady voltage energy storage module, drive arrangement's output be connected with the control end of electro-magnet, steady voltage energy storage module and power supply circuit between be equipped with the rectification part, power supply circuit constitute by live wire L and zero line N.
When the rectifier is in operation, the rectifier can carry out full-wave rectification and filtering on a power circuit with alternating current input, and is used for reducing direct current ripple components after rectification and filtering. The output of the rectifying component is used as the input end of the voltage-stabilizing energy-storing module, and the control unit of the rectifying component is controlled by the negative feedback of the input and output and is used as a driving direct-current stabilized voltage power supply of the electromagnet after the energy is stored by the energy-storing capacitor. The driving component conducts the electronic switch through the trigger pulse of the pulse transformer, so that the electromagnet is conducted to generate electromagnetic attraction, and the driving mechanism acts.
The voltage-stabilizing energy storage module enables the output driving direct-current power supply to achieve constant voltage through the comparison control unit, provides electromagnetic driving energy through discharging of the energy storage capacitor, and ensures that the driving voltage and the driving energy of the electromagnet are basically kept consistent so as to ensure that the characteristics of the whole action are consistent.
The driving component utilizes the isolation characteristic of the pulse transformer to isolate the strong current and the weak current of the trigger signal, and utilizes the pulse conduction characteristic of the pulse transformer to ensure that the driving electronic switch is conducted for a short time, ensure the short-time power supply characteristic of the electromagnet and prevent the electromagnet from being conducted for a long time.
Preferably, the rectifying component includes a rectifying diode D1, a rectifying diode D2, a rectifying diode D3, a rectifying diode D4 and a capacitor C1, the rectifying diode D1, the rectifying diode D2, the rectifying diode D3 and the rectifying diode D4 form a bridge rectifier bridge, a node of the bridge rectifier bridge A, C is connected with a live line L and a neutral line N of the power circuit, and a node of the bridge rectifier bridge B, D is connected with pins 1 and 2 of the capacitor C1.
Preferably, the voltage-stabilizing energy-storing module includes a PMOS, an NMOS, a comparator U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C2, a capacitor C3, a diode D5, a zener diode D6, and an inductor L1, wherein a pin 1 of the PMOS is respectively connected to a pin 1 of the capacitor C1 and a pin 1 of the resistor R1, a pin 2 of the resistor R1 is respectively connected to a pin 2 of the PMOS and a pin 1 of the resistor R2, a pin 3 of the PMOS is respectively connected to a pin 1 of the inductor L1 and a pin 1 of the diode D5, a pin 2 of the resistor R2 is connected to a pin 1 of the NMOS, a pin 2 of the NMOS is respectively connected to a pin 2 of the capacitor C1, a pin 2 of the capacitor C2, a pin 2 of the zener diode D6, a pin 2 of the resistor R8, a pin 2 of the diode 5 and a pin 2 of the capacitor 3, the 3 pins of the NMOS are connected with the 1 pin of the comparator U1 through a resistor R3, the 2 pins of the comparator U1 are respectively connected with the 1 pin of the resistor R8 and the 1 pin of the resistor R7, the 3 pins of the comparator U1 are respectively connected with the 1 pin of a capacitor C2, the 1 pin of a voltage-stabilizing diode D6 and the 1 pin of the resistor R6, and the 2 pins of the resistor R6 are respectively connected with the 2 pin of the resistor R7, the 2 pin of a resistor L1 and the 1 pin of the capacitor C3.
Preferably, the driving device includes an electromagnet L2, a diode D7, an electronic switch Q1, a pulse transformer PT1, a resistor R4 and a resistor R5, a pin 1 of the electromagnet L2 is respectively connected with a pin 2 of the resistor R6 and a pin 1 of the diode D7, a pin 2 of the electromagnet L2 is respectively connected with a pin 2 of the diode D7 and a pin 2 of the electronic switch Q1, a pin 1 of the electronic switch Q1 is respectively connected with a pin 2 of the resistor R4 and a pin 1 of the resistor R5, a pin 1 of the resistor R4 is connected with a pin 1 of the pulse transformer PT1, and a pin 2 of the pulse transformer PT1 is respectively connected with a pin 2 of the resistor R5, a pin 2 of the capacitor C3 and a pin 3 of the electronic switch Q1.
The utility model discloses following beneficial effect has: the circuit has high transmission stability, high transmission efficiency and high switch execution speed.
Drawings
Fig. 1 is a specific circuit diagram of the present invention.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): further explained according to the attached figure 1, the direct-current excitation driving device of the automatic change-over switch of the embodiment comprises a driving component and a power circuit, wherein the driving component and the power circuit are used as main bodies, the input end of the driving device is connected with a voltage-stabilizing energy-storing module, the output end of the driving device is connected with the control end of an electromagnet, a rectifying component is arranged between the voltage-stabilizing energy-storing module and the power circuit, and the power circuit consists of a live wire L and a zero wire N.
The rectifying component comprises a rectifying diode D1, a rectifying diode D2, a rectifying diode D3, a rectifying diode D4 and a capacitor C1, the rectifying diode D1, the rectifying diode D2, the rectifying diode D3 and the rectifying diode D4 form a bridge rectifier bridge, the node of the bridge rectifier bridge A, C is connected with a live wire L and a zero wire N of the power circuit respectively, and the node of the bridge rectifier bridge B, D is connected with pins 1 and 2 of the capacitor C1 respectively.
The voltage-stabilizing energy-storing module comprises a PMOS, an NMOS, a comparator U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C2, a capacitor C3, a diode D5, a voltage-stabilizing diode D6 and an inductor L6, wherein a pin 1 of the PMOS is respectively connected with a pin 1 of the capacitor C6 and a pin 1 of the resistor R6, a pin 2 of the resistor R6 is respectively connected with a pin 2 of the PMOS and a pin 1 of the resistor R6, a pin 3 of the PMOS is respectively connected with a pin 1 of the inductor L6 and a pin 1 of the diode D6, a pin 2 of the resistor R6 is connected with a pin 1 of the NMOS, a pin 2 of the NMOS is respectively connected with a pin 2 of the capacitor C6, a pin 2 of the voltage-stabilizing diode D6, a pin 2 of the resistor R6, a pin 2 of the diode R6, a pin 2 of the resistor D6 and a pin 2 of the capacitor U6 are connected with the pin 3 of, pin 2 of the comparator U1 is connected with pin 1 of the resistor R8 and pin 1 of the resistor R7, pin 3 of the comparator U1 is connected with pin 1 of the capacitor C2, pin 1 of the zener diode D6 and pin 1 of the resistor R6, and pin 2 of the resistor R6 is connected with pin 2 of the resistor R7, pin 2 of the resistor L1 and pin 1 of the capacitor C3.
The driving device comprises an electromagnet L2, a diode D7, an electronic switch Q1, a pulse transformer PT1, a resistor R4 and a resistor R5, wherein a pin 1 of the electromagnet L2 is respectively connected with a pin 2 of the resistor R6 and a pin 1 of the diode D7, a pin 2 of the electromagnet L2 is respectively connected with a pin 2 of the diode D7 and a pin 2 of the electronic switch Q1, a pin 1 of the electronic switch Q1 is respectively connected with a pin 2 of the resistor R4 and a pin 1 of the resistor R5, a pin 1 of the resistor R4 is connected with a pin 1 of the pulse transformer PT1, and a pin 2 of the pulse transformer PT1 is respectively connected with a pin 2 of the resistor R5, a pin 2 of the capacitor C3 and a pin 3 of the electronic switch Q1.
The above description is only for the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.
Claims (4)
1. A direct-current excitation driving device of an automatic change-over switch comprises a driving component and a power circuit, wherein the driving component and the power circuit are used as main bodies, and the direct-current excitation driving device is characterized in that the input end of the driving device is connected with a voltage-stabilizing energy storage module, the output end of the driving device is connected with the control end of an electromagnet, a rectifying component is arranged between the voltage-stabilizing energy storage module and the power circuit, and the power circuit is composed of a live wire L and a zero wire N.
2. The direct-current excitation driving device of the automatic transfer switch of claim 1, wherein the rectifying component comprises a rectifying diode D1, a rectifying diode D2, a rectifying diode D3, a rectifying diode D4 and a capacitor C1, the rectifying diode D1, the rectifying diode D2, the rectifying diode D3 and the rectifying diode D4 form a bridge rectifier bridge, the nodes of the bridge rectifier bridge A, C are respectively connected with the live line L and the neutral line N of the power circuit, and the nodes of the bridge rectifier bridge B, D are respectively connected with pins 1 and 2 of the capacitor C1.
3. The DC excitation driving device of an automatic transfer switch as claimed in claim 2, wherein the voltage-stabilizing energy-storage module comprises a PMOS, an NMOS, a comparator U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C2, a capacitor C3, a diode D5, a voltage-stabilizing diode D6 and an inductor L1, wherein the 1 pin of the PMOS is respectively connected with the 1 pin of the capacitor C1 and the 1 pin of the resistor R1, the 2 pin of the resistor R1 is respectively connected with the 2 pin of the PMOS and the 1 pin of the resistor R2, the 3 pin of the PMOS is respectively connected with the 1 pin of the inductor L1 and the 1 pin of the diode D5, the 2 pin of the resistor R2 is connected with the 1 pin of the NMOS, and the 2 pin of the NMOS is respectively connected with the 2 pin of the capacitor C1, the 2 pin of the capacitor C2, the 2 pin of the diode D6 and the 2 pin of the voltage-, A pin 2 of the resistor R8, a pin 2 of the diode D5 and a pin 2 of the capacitor C3 are connected, a pin 3 of the NMOS is connected with a pin 1 of the comparator U1 through a resistor R3, a pin 2 of the comparator U1 is connected with a pin 1 of the resistor R8 and a pin 1 of the resistor R7 respectively, a pin 3 of the comparator U1 is connected with a pin 1 of the capacitor C2, a pin 1 of the voltage stabilizing diode D6 and a pin 1 of the resistor R6 respectively, and a pin 2 of the resistor R6 is connected with a pin 2 of the resistor R7, a pin 2 of the resistor L1 and a pin 1 of the capacitor C3 respectively.
4. The DC excitation driving device of an automatic transfer switch as claimed in claim 3, wherein said driving device comprises an electromagnet L2, a diode D7, an electronic switch Q1, a pulse transformer PT1, a resistor R4 and a resistor R5, wherein pin 1 of the electromagnet L2 is connected with pin 2 of the resistor R6 and pin 1 of the diode D7, pin 2 of the electromagnet L2 is connected with pin 2 of the diode D7 and pin 2 of the electronic switch Q1, pin 1 of the electronic switch Q1 is connected with pin 2 of the resistor R4 and pin 1 of the resistor R5, pin 1 of the resistor R4 is connected with pin 1 of the pulse transformer 1, and pin 2 of the pulse transformer PT1 is connected with pin 2 of the resistor R5, pin 2 of the capacitor C3 and pin 3 of the electronic switch Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363000.6U CN210110592U (en) | 2019-03-21 | 2019-03-21 | Direct-current excitation driving device of automatic change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363000.6U CN210110592U (en) | 2019-03-21 | 2019-03-21 | Direct-current excitation driving device of automatic change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210110592U true CN210110592U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920363000.6U Expired - Fee Related CN210110592U (en) | 2019-03-21 | 2019-03-21 | Direct-current excitation driving device of automatic change-over switch |
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| Country | Link |
|---|---|
| CN (1) | CN210110592U (en) |
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2019
- 2019-03-21 CN CN201920363000.6U patent/CN210110592U/en not_active Expired - Fee Related
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