CN104506074A - Unipolar pulse power supply - Google Patents
Unipolar pulse power supply Download PDFInfo
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- CN104506074A CN104506074A CN201410848887.XA CN201410848887A CN104506074A CN 104506074 A CN104506074 A CN 104506074A CN 201410848887 A CN201410848887 A CN 201410848887A CN 104506074 A CN104506074 A CN 104506074A
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Abstract
The invention discloses a unipolar pulse power supply. The unipolar pulse power supply comprises an input set unit, a central control unit, a rectifying circuit, a filtering circuit, a chopper drive circuit, a load circuit, a signal acqusition circuit and a trigger control angle, wherein a signal output end of the input set unit is connected with a signal input end of the central control unit; a signal output end of the central control unit is connected with a signal input end of the rectifying circuit; a signal output end of the rectifying circuit is connected with an input end of the filtering circuit; a signal output end of the filtering circuit is connected with a signal input end of the chopper drive circuit; a signal output end of the chopper drive circuit is connected with the load circuit; the load circuit is connected with a signal input end of the signal acqusition circuit; an output end of the signal acqusition circuit is connected with a signal input end of the central control unit; the trigger control angle is connected between the central control unit and the rectifying circuit. According to the unipolar pulse power supply, continuously adjustable output pulse width, frequency and amplitude can be realized.
Description
Technical field
The present invention relates to a kind of power supply, be specifically related to a kind of unipolar pulse power supply.
Background technology
The pulse power refers to that the load of user needs intermittently to power up, and namely according to regular hour rule, powers up the regular hour to load, then power-off regular hour again, and break-make once forms one-period, so repeatedly performs, and just forms the pulse power.The pulse power is mainly used in the fields such as plasma heat treatment, pulse plating, arc welding, electrobrightening, high-frequency impulse induction heating, liquid discharge-induced explosion.In different application scenarios, different to the requirement of the output voltage of power supply, output current and switching frequency etc.
The development of the pulse power is limited by the development of switching device, and especially great power pulse power source depends on the development of switching device especially.Along with the appearance of the self-turn-off devices such as GTO, create the chopper-type pulse power, the chopper-type pulse power be by the direct current of prime through high-power switch device control after, output cycle and duty ratio are by switching device control impuls, decision highpowerpulse exports, but this kind of power supply exports with input not isolated, excessive to the pressure of electrical network.If increase input isolating transformer, because power is excessive, make volume of transformer huge.Add that switching device is subject to the restriction of operating frequency, make the output frequency of the pulse power very low.Along with pulse power application is more and more extensive, pulse power main development direction is inverse type great power pulse power source, the appearance of some new devices, can improve the performance of pulse power system but can not change the inverter main circuit topology of power-supply system.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of unipolar pulse power supply, can realize output pulse width, frequency and amplitude continuously adjustabe.
Unipolar pulse power supply, comprise input setup unit, central control unit, rectification circuit, filter circuit, Chopper driving circuit, load circuit, signal acquisition circuit and delay angle, the signal output part of described input setup unit connects the signal input part of central control unit, the signal output part of central control unit is connected with the signal input part of rectification circuit, the signal output part of rectification circuit is connected with the input of filter circuit, the signal output part of filter circuit is connected with Chopper driving circuit signal input, Chopper driving circuit signal output connects load circuit, load circuit is connected with the signal input part of signal acquisition circuit, the output of signal acquisition circuit connects the signal input part of central control unit.
Further, the signal input part of described central control unit is also connected with temperature detecting unit, current detecting unit and short-circuit protection unit, is unimpeded in order to better protective circuit.
Further, the signal output part of described central control unit is also connected with display unit, clearly can check the instantaneous value of input set point and output.
Preferably, described central control unit is DSP microcontroller, is to utilize DSP fast response time, judge the advantages such as accurate, for the operation of whole system provides safeguard.
Beneficial effect of the present invention is: three-phase alternating current of the present invention converts direct current to through rectification circuit and exports with impulse form, carries out after determination processing through central controller, within the specific limits can output pulse width, frequency and amplitude continuously adjustabe.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of unipolar pulse power supply of the present invention.
Embodiment
Accompanying drawing discloses concrete structure of the present invention without limitation, and below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, unipolar pulse power supply, comprise input setup unit, central control unit, rectification circuit, filter circuit, Chopper driving circuit, load circuit, signal acquisition circuit and delay angle, the signal output part of described input setup unit connects the signal input part of central control unit, the signal output part of central control unit is connected with the signal input part of rectification circuit, the signal output part of rectification circuit is connected with the input of filter circuit, the signal output part of filter circuit is connected with Chopper driving circuit signal input, Chopper driving circuit signal output connects load circuit, load circuit is connected with the signal input part of signal acquisition circuit, the output of signal acquisition circuit connects the signal input part of central control unit, described delay angle is connected between central control unit and rectification circuit.The signal input part of described central control unit is also connected with temperature detecting unit, current detecting unit and short-circuit protection unit.The signal output part of described central control unit is also connected with display unit.Described central control unit is DSP microcontroller.
The present invention is using DSP microcontroller as the control core of whole system, three-phase alternating current converts direct current to through rectification circuit and exports with impulse form, input setup unit input set point, DSP microcontroller is after calculating and waiting process, control the normal work of rectification unit, and then control delay angle, delay angle again by current amplitude signal feedback to DSP microcontroller, after DSP microcontroller processes, export the pulse current of different amplitude, reach output current amplitude adjustable, pulse duration and frequency then input DSP microcontroller by analog voltage, the A/D converter built-in through DSP microcontroller converts thereof into digital signal, and then determine output current pulse duration and frequency, the use of filter circuit makes output voltage smooth-out, voltage Chopper driving circuit load circuit output again again, synchronous signal Acquisition Circuit Real-time Collection outputs signal, and live signal feedback is sent into DSP microcontroller, guarantees that output valve reaches the set point of expection.
Claims (4)
1. unipolar pulse power supply, comprise input setup unit, central control unit, rectification circuit, filter circuit, Chopper driving circuit, load circuit, signal acquisition circuit and delay angle, it is characterized in that: the signal output part of described input setup unit connects the signal input part of central control unit, the signal output part of central control unit is connected with the signal input part of rectification circuit, the signal output part of rectification circuit is connected with the input of filter circuit, the signal output part of filter circuit is connected with Chopper driving circuit signal input, Chopper driving circuit signal output connects load circuit, load circuit is connected with the signal input part of signal acquisition circuit, the output of signal acquisition circuit connects the signal input part of central control unit, described delay angle is connected between central control unit and rectification circuit.
2. pulse power supply according to claim 1, is characterized in that: the signal input part of described central control unit is also connected with temperature detecting unit, current detecting unit and short-circuit protection unit.
3. unipolar pulse power supply according to claim 1, is characterized in that: the signal output part of described central control unit is also connected with display unit.
4. unipolar pulse power supply according to claim 1, is characterized in that: described central control unit is DSP microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848887.XA CN104506074A (en) | 2014-12-31 | 2014-12-31 | Unipolar pulse power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848887.XA CN104506074A (en) | 2014-12-31 | 2014-12-31 | Unipolar pulse power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104506074A true CN104506074A (en) | 2015-04-08 |
Family
ID=52947801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410848887.XA Pending CN104506074A (en) | 2014-12-31 | 2014-12-31 | Unipolar pulse power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104506074A (en) |
-
2014
- 2014-12-31 CN CN201410848887.XA patent/CN104506074A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| GY5731: "单极性脉冲电源的设计", 《道客巴巴》 * |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150408 |