CN205160362U - It prevents soft start circuit of NULL excessive pressure on quick -witted equipment to make pottery - Google Patents
It prevents soft start circuit of NULL excessive pressure on quick -witted equipment to make pottery Download PDFInfo
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- CN205160362U CN205160362U CN201520858758.9U CN201520858758U CN205160362U CN 205160362 U CN205160362 U CN 205160362U CN 201520858758 U CN201520858758 U CN 201520858758U CN 205160362 U CN205160362 U CN 205160362U
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Abstract
The utility model discloses an it prevents soft start circuit of NULL excessive pressure on quick -witted equipment to make pottery, this circuit include soft start circuit, diode rectifier circuit and a soft start control module. Soft start circuit's power input end is connected to outside three -phase AC power supply, and its output is connected to diode rectifier circuit, and the input of take a sample of a soft start control module externally three -phase AC power supply is through back outlet driving signal to soft start circuit's the drive signal input of processing. Interchange side at diode rectifier circuit adopts the silicon controlled rectifier to carry out the soft start, has reduced starting resistance and auxiliary relay, has reduced the volume of driver, and the dc bus overall arrangement is more compact, need not dedicated integrated control chip, only need gather the double -phase line voltage zero crossing of BC, and the circuit is succinct reliable, realizes the sexual valence relative altitude easily.
Description
Technical field
The utility model belongs to ceramic industry Special alternating-current servo-driver field, is specifically related to the soft starting circuit a kind of machine equipment of making pottery preventing from exchange input overvoltage.
Background technology
At present, in the ceramic industry application of specialty, often occur that therefore having the special circuit preventing from exchanging input overvoltage could protect servo-driver to exempt from damage better because input terminal voltage is too high and damage the situation of servo-driver.General AC servo driver, adopts the structure of ac/dc/exchange conversion usually, and namely two-phase or three-phase alternating current input voltage change into direct voltage after diode rectification, and export DC side filter capacitor and storage power to.Because the filter capacitor capacity of DC side is very large, when servo-driver power output is larger time, the charging current of powered on moment must be limited, produce excessive charging current to prevent servo-driver powered on moment thus damage is caused to the filter capacitor, protective tube, printed circuit board wire etc. of the rectifying device in servo-driver, DC bus.
Conventional soft start-up scheme is in DC bus charge circuit, the resistance of certain resistance of connecting, and shortcoming needs series resistor on DC bus row, adds difficulty and the complexity of DC bus row design.In addition, also add and the devices such as the relay of resistor coupled in parallel or controllable silicon, add the volume of driver, and the reliability of system is reduced.When the power of driver is larger, be difficult to find suitable relay, make again the layout of DC bus copper bar be difficult to realize simultaneously.
In addition, also has another DC bus-bar voltage soft starting mode, namely rectification circuit adopts the mode of three-phase fully-controlled or half control rectification, is turned on and off by the silicon controlled controlling full control or half control rectifier bridge, the size of current of DC bus when realizing controlling to start.Although the resistance it saved on DC bus and relay, make DC bus structure compacter, but three-phase fully-controlled or half control rectifier bridge expensive, three-phase voltage zero passage Acquisition Circuit and trigger control circuit are comparatively complicated, are difficult to be promoted use in a big way.
Utility model content
In order to solve the problem that servo-driver input voltage is too high, the electric current that powers on is excessive, this utility model provides a kind of structure soft starting circuit that is simple, that easily realize.
The technical solution of the utility model is: a kind of machine equipment of making pottery prevents the soft starting circuit exchanging input overvoltage, comprise soft starting circuit, diode rectifier circuit and soft start control module.This circuit is connected to outside three-phase alternating-current supply by the power input of described soft starting circuit, and its output is connected to described diode rectifier circuit; Described soft start control module inputs from outside three-phase alternating current source sampling, output drive signal is to the driving signal input of described soft starting circuit after treatment, be characterized in, described soft start control module is made up of line voltage zero-cross signal acquisition module, input voltage overvoltage signal acquisition module, trigger impulse generation module and trigger impulse isolation drive module; Wherein, described line voltage zero-cross signal acquisition module samples as input from the B phase of outside three-phase alternating-current supply, C phase, and its output is connected to an input of described trigger impulse generation module; Described input voltage overvoltage signaling module samples as input from the A phase of outside three-phase alternating-current supply, B phase, C phase, and its output is connected to another input of described trigger impulse generation module; The start pulse signal exported after input signal processes by described trigger impulse generation module is connected to the input of described trigger impulse isolation drive module; Described trigger impulse isolation drive module carries out input signal to isolate, export after power amplification and be connected to the driving signal input of described soft starting circuit.
Described soft starting circuit is made up of controllable silicon T1, T2, the input of described controllable silicon T1 is connected to the A phase of outside three-phase alternating-current supply, the output of T1 is as the output of described soft starting circuit, and leading-out terminal K1 is as the reference point of the drive singal input G1 of described soft starting circuit; The input of described controllable silicon T2 is connected to the C phase of outside three-phase alternating-current supply, and the output of T2 is as the output of described soft starting circuit, and leading-out terminal K2 is as the reference point of the drive singal input G2 of described soft starting circuit.
The input a point of described diode rectifier circuit is connected to the output K1 of soft starting circuit, and input b point is connected to the B phase of outside three-phase alternating-current supply, and input c point is connected to the output K2 of soft starting circuit.
The beneficial effects of the utility model are as follows: adopt controllable silicon to carry out soft start at the AC of diode rectifier circuit, decrease starting resistance and auxiliary relay, reduce the volume of driver, DC bus layout is more compact, without the need to special integrating control chip, only need the line voltage zero-cross point gathering BC two-phase, simple circuit is reliable, easy realization, cost performance is high.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is overall circuit schematic diagram of the present utility model;
Embodiment
The utility model is as shown in Figure 1: a kind of machine equipment of making pottery prevents the soft starting circuit exchanging input overvoltage, comprise soft starting circuit, diode rectifier circuit and soft start control module.This circuit is connected to outside three-phase alternating-current supply by the power input of described soft starting circuit, and its output is connected to described diode rectifier circuit; Described soft start control module inputs from outside three-phase alternating current source sampling, output drive signal is to the driving signal input of described soft starting circuit after treatment, be characterized in, described soft start control module is made up of line voltage zero-cross signal acquisition module, input voltage overvoltage signal acquisition module, trigger impulse generation module and trigger impulse isolation drive module; Wherein, described line voltage zero-cross signal acquisition module samples as input from the B phase of outside three-phase alternating-current supply, C phase, and its output is connected to an input of described trigger impulse generation module; Described input voltage overvoltage signaling module samples as input from the A phase of outside three-phase alternating-current supply, B phase, C phase, and its output is connected to another input of described trigger impulse generation module; The start pulse signal exported after input signal processes by described trigger impulse generation module is connected to the input of described trigger impulse isolation drive module; Described trigger impulse isolation drive module carries out input signal to isolate, export after power amplification and be connected to the driving signal input of described soft starting circuit.
Described soft starting circuit is made up of controllable silicon T1, T2, the input of described controllable silicon T1 is connected to the A phase of outside three-phase alternating-current supply, the output of T1 is as the output of described soft starting circuit, and leading-out terminal K1 is as the reference point of the drive singal input G1 of described soft starting circuit; The input of described controllable silicon T2 is connected to the C phase of outside three-phase alternating-current supply, and the output of T2 is as the output of described soft starting circuit, and leading-out terminal K2 is as the reference point of the drive singal input G2 of described soft starting circuit.
The input a point of described diode rectifier circuit is connected to the output K1 of soft starting circuit, and input b point is connected to the B phase of outside three-phase alternating-current supply, and input c point is connected to the output K2 of soft starting circuit.
Described line voltage zero-cross signal acquisition module gathers B phase, the C phase voltage of outside three-phase alternating-current supply, utilizes the line voltage generation zero-crossing pulse signal of B phase, C phase composition.
Described input voltage overvoltage signaling module gathers A phase, B phase, the C phase voltage of outside three-phase alternating-current supply, detects the whether overvoltage of this three-phase voltage, once overvoltage will produce overvoltage pulse signal.
The Trigger Angle that progressively reduces, when receiving zero-crossing pulse signal, produces by described trigger impulse generation module, produce start pulse signal control corresponding controllable silicon T1, T2 slowly standard-sized sheet lead to, thus make DC bus-bar voltage when powering on slowly increase.
Described trigger impulse generation module is when receiving overvoltage pulse signal; controllable silicon T1, T2 will be turned off completely; the input of described diode rectifier circuit is disconnected; ensure that the voltage on filter capacitor no longer rises; DC bus-bar voltage maintains area of safety operaton, thus protection filter capacitor, rectifier diode constant power device are from damage.
The start pulse signal of input carries out isolating by described trigger impulse isolation drive module, deliver to silicon controlled after power amplification drives input, ensure the electrical isolation of control circuit and main circuit, avoid control circuit device to damage by main circuit forceful electric power affects.
Claims (3)
1. make pottery and machine equipment prevents from exchanging a soft starting circuit for input overvoltage, comprise soft starting circuit, diode rectifier circuit and soft start control module; This circuit is connected to outside three-phase alternating-current supply by the power input of described soft starting circuit, and its output is connected to described diode rectifier circuit; Described soft start control module inputs from outside three-phase alternating current source sampling, output drive signal is to the driving signal input of described soft starting circuit after treatment, it is characterized in that, described soft start control module is made up of line voltage zero-cross signal acquisition module, input voltage overvoltage signal acquisition module, trigger impulse generation module and trigger impulse isolation drive module; Wherein, described line voltage zero-cross signal acquisition module samples as input from the B phase of outside three-phase alternating-current supply, C phase, and its output is connected to an input of described trigger impulse generation module; Described input voltage overvoltage signaling module samples as input from the A phase of outside three-phase alternating-current supply, B phase, C phase, and its output is connected to another input of described trigger impulse generation module; The start pulse signal exported after input signal processes by described trigger impulse generation module is connected to the input of described trigger impulse isolation drive module; Described trigger impulse isolation drive module carries out input signal to isolate, export after power amplification and be connected to the driving signal input of described soft starting circuit.
2. a kind of machine equipment of making pottery according to claim 1 prevents the soft starting circuit exchanging input overvoltage, it is characterized in that, described soft starting circuit is made up of controllable silicon T1, T2, the input of described controllable silicon T1 is connected to the A phase of outside three-phase alternating-current supply, the output of T1 is as the output of described soft starting circuit, and leading-out terminal K1 is as the reference point of the drive singal input G1 of described soft starting circuit; The input of described controllable silicon T2 is connected to the C phase of outside three-phase alternating-current supply, and the output of T2 is as the output of described soft starting circuit, and leading-out terminal K2 is as the reference point of the drive singal input G2 of described soft starting circuit.
3. a kind of machine equipment of making pottery according to claim 1 prevents the soft starting circuit exchanging input overvoltage, it is characterized in that, the input a point of described diode rectifier circuit is connected to the output K1 of soft starting circuit, input b point is connected to the B phase of outside three-phase alternating-current supply, and input c point is connected to the output K2 of soft starting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858758.9U CN205160362U (en) | 2015-10-29 | 2015-10-29 | It prevents soft start circuit of NULL excessive pressure on quick -witted equipment to make pottery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858758.9U CN205160362U (en) | 2015-10-29 | 2015-10-29 | It prevents soft start circuit of NULL excessive pressure on quick -witted equipment to make pottery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205160362U true CN205160362U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520858758.9U Expired - Fee Related CN205160362U (en) | 2015-10-29 | 2015-10-29 | It prevents soft start circuit of NULL excessive pressure on quick -witted equipment to make pottery |
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| Country | Link |
|---|---|
| CN (1) | CN205160362U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226928A (en) * | 2015-10-29 | 2016-01-06 | 佛山市和融数控软件有限公司 | A kind of machine equipment of making pottery prevents the soft starting circuit exchanging input overvoltage |
| CN108712113A (en) * | 2018-05-04 | 2018-10-26 | 云南兆富科技有限公司 | A kind of online soft starting device of motor |
-
2015
- 2015-10-29 CN CN201520858758.9U patent/CN205160362U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226928A (en) * | 2015-10-29 | 2016-01-06 | 佛山市和融数控软件有限公司 | A kind of machine equipment of making pottery prevents the soft starting circuit exchanging input overvoltage |
| CN108712113A (en) * | 2018-05-04 | 2018-10-26 | 云南兆富科技有限公司 | A kind of online soft starting device of motor |
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| 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: 20160413 Termination date: 20191029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |