CN104393772A - Digital large-power driving power supply loaded with surge protection circuit - Google Patents
Digital large-power driving power supply loaded with surge protection circuit Download PDFInfo
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- CN104393772A CN104393772A CN201410563515.2A CN201410563515A CN104393772A CN 104393772 A CN104393772 A CN 104393772A CN 201410563515 A CN201410563515 A CN 201410563515A CN 104393772 A CN104393772 A CN 104393772A
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- module
- power supply
- surge protection
- protection circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a digital large-power driving power supply loaded with a surge protection circuit, which comprises a rectifier filter module, a surge protection circuit, an auxiliary power supply, a CPLD digital control module, an inverter voltage boosting module, a feedback circuit and a comparator, wherein the rectifier filter module, the surge protection circuit, the auxiliary power supply, the CPLD digital control module and the inverter voltage boosting module are sequentially connected; and the inverter voltage boosting module is also connected with the CPLD digital control module via the feedback module and the comparator connected in sequence. The digital large-power driving power supply loaded with a surge protection circuit can be competent for control pulses at 10kb/s in the case of laser processing according to the CPLD-based digital control mode, and stable power output under work for a long time can be ensured; the auxiliary power supply based on a VIPer22A converter and a high-frequency power transformer is adopted, waveform of output voltage is stable, and no large peaks exist; and the frequency response is high, the control is accurate, output current has little ripples, and the laser can be ensured to work stably and for a long time.
Description
Technical field
The invention discloses a kind of digital high-power driving power supply loading surge protection circuit, relate to Power Management Design technical field.
Background technology
Laser process equipment is very high to the requirement of power supply, power supply is the basis that equipment runs, there is no power supply, as long as but also and do not mean that power supply just meets metal laser cutting machine, power supply has certain potential safety hazard simultaneously, so demand fulfillment requirement once, the electric wave of electrical network controls between+10%--15%, and China's power supply is due to technical reason, qualitatively Shortcomings, add human factor, the more difficult control of this fluctuation range.
Laser processing mainly utilizes CO, and laser beam focus makes material melt at material surface, blows away the material be melted with the Compressed Gas coaxial with laser beam simultaneously, has come the cutting of required trace graphics or the engraving of corresponding handicraft surface.Laser processing belongs to noncontact processing, has that processing method is many, strong adaptability, machining accuracy are high, quality good and working (machining) efficiency advantages of higher.Laser Driven power supply is as the direct control unit of laser, and the highest frequency of its optical switch response and light power are stablized directly can affect final processing effect with reliability.
The patent No. is CN103606811A, patent name is the pulse optical fiber driving power control system based on CPLD, this patent improves the stability of laser power, but do not control from power unit, the unsteadiness of power supply still can affect the stability of laser, so this patent does not solve this technical problem from root.
The patent No. is CN201717507U, patent name is a kind of Laser Power Devices, not do not control for the stability of power supply and jitter in the power supply designed in this patent, the problem that the switch just simply improving power supply causes, and the insufficiency of function of this power supply is to support the needs of existing laser processing.
In sum, the stability of existing Laser Driven power supply all can not get good solution at present, has become current problem in urgent need to solve.Meanwhile, in traditional circuit structure, in order to realize the treatment effect of constant voltage DC, the setting of constant voltage DC circuit is indispensable, but traditional constant voltage DC circuit structure is complicated, power consumption is comparatively large, adds the cost of circuit design.
Summary of the invention
Technical problem to be solved by this invention is: for the defect of prior art; a kind of digital high-power driving power supply loading surge protection circuit is provided; load the treatment effect that surge protection circuit realizes constant voltage DC; channel frequency response is high, control is accurate and output current ripple is little, can ensure the work of laser long-term stability.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Load a digital high-power driving power supply for surge protection circuit, comprise rectification filtering module, surge protection circuit, accessory power supply, CPLD digital control module, inversion boosting module, feedback circuit and comparator;
Wherein rectification filtering module, surge protection circuit, accessory power supply, CPLD digital control module, inversion boosting module are connected successively, and described inversion boosting module is also connected with CPLD digital control module by feedback module connected successively, comparator;
The AC power of 220V produces the direct voltage of 310V after rectification filtering module, then 310V direct voltage is respectively inversion boosting module and accessory power supply provides voltage after treatment through surge protection circuit, the DC power supply that 310V direct voltage is treated to 12V and 5V by accessory power supply provides reference voltage for digital control part and feedback fraction, the electric current of feedback circuit sampling inversion boosting module output, the control command exported with CPLD digital control module is compared by comparator thus controls the output current of inversion boosting module;
Described surge protection circuit comprises the first resistance, the second resistance, inductance and diode; the output head anode of described rectification filtering module is connected with one end of inductance, one end of the second resistance respectively; the other end of inductance is connected with the negative pole of diode; the positive pole of diode is connected with one end of the first resistance, and the other end of the first resistance is connected with the negative pole of output end of rectification filtering module, the other end of the second resistance respectively.
As further prioritization scheme of the present invention; inversion boosting module comprises half-bridge inversion circuit, series resonant circuit; the input of wherein said half-bridge inversion circuit is connected with the output of surge protection circuit, and the output of described half-bridge inversion circuit is connected with described series resonant circuit.
As further prioritization scheme of the present invention, the chip model that auxiliary power module adopts is VIPer22 A.
As further prioritization scheme of the present invention, also comprise filtration module, the input of described filtration module is connected with the output of described accessory power supply, and the output of described filtration module is connected with CPLD digital control module.
As further prioritization scheme of the present invention, the chip model that described CPLD digital control module adopts is FLEX601.
The present invention adopts above technical scheme compared with prior art, has following technique effect: the digital control approach that the present invention is based on CPLD, can be competent at the control impuls of 10kb/s in laser processing, can complete the engraving of gradient engraving and small character well.In Laser cutting, because the duty ratio of the driving pulse of digital control module output is by the impact of outside non-control signal, can ensure at the lower stable power stage that works long hours; Accessory power supply VIPer22 A, adopts the accessory power supply based on VIPer22 A converter and Switch Power Transformer, and output voltage waveforms is stable without larger spike; Frequency response is high, control is accurate and output current ripple is little, can ensure the work of laser long-term stability.
Accompanying drawing explanation
Fig. 1 is modular structure schematic diagram of the present invention,
Wherein: J represents inductance, D represents diode, and R1 represents the first resistance, and R2 represents the second resistance.
Embodiment
Be described below in detail embodiments of the present invention, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
System configuration schematic diagram of the present invention as shown in Figure 1, load a digital high-power driving power supply for surge protection circuit, comprise rectification filtering module, surge protection circuit, accessory power supply, CPLD digital control module, inversion boosting module, feedback circuit and comparator;
Wherein rectification filtering module, surge protection circuit, accessory power supply, CPLD digital control module, inversion boosting module are connected successively, and described inversion boosting module is also connected with CPLD digital control module by feedback module connected successively, comparator;
The AC power of 220V produces the direct voltage of 310V after rectification filtering module, then 310V direct voltage is respectively inversion boosting module and accessory power supply provides voltage after treatment through surge protection circuit, the DC power supply that 310V direct voltage is treated to 12V and 5V by accessory power supply provides reference voltage for digital control part and feedback fraction, the electric current of feedback circuit sampling inversion boosting module output, the control command exported with CPLD digital control module is compared by comparator thus controls the output current of inversion boosting module;
Described surge protection circuit comprises the first resistance, the second resistance, inductance and diode; the output head anode of described rectification filtering module is connected with one end of inductance, one end of the second resistance respectively; the other end of inductance is connected with the negative pole of diode; the positive pole of diode is connected with one end of the first resistance, and the other end of the first resistance is connected with the negative pole of output end of rectification filtering module, the other end of the second resistance respectively.
Surge protection circuit mainly completes the conversion of input voltage to the direct voltage of 310V of alternating current 220V, and ensures the reliable and stable work under a rational parameter of inversion boosting module.
Inversion boosting module mainly completes the High voltage output of the about 200V that load needs, and feedback circuit mainly plays a protective role, and protects output current to be no more than 30mA, control the scope of output current by the size of current of sampling inversion boosting module.
As further prioritization scheme of the present invention; inversion boosting module comprises half-bridge inversion circuit, series resonant circuit; the input of wherein said half-bridge inversion circuit is connected with the output of surge protection circuit; the output of described half-bridge inversion circuit is connected with described series resonant circuit; the direct voltage of 310V obtains high frequency square wave voltage through inversion boosting module; in order to ensure the device brightness of low current laser, in inversion circuit, have employed series resonance and parallel resonance technology.The boosting part that high-frequency step-up transformer and high-voltage rectifier are formed is packaged into independently element high voltage package.
Numerical portion adopts CPLD to control, and CPLD completes the logic control of the signals such as switch light, water conservation, overcurrent-overvoltage feedback on the one hand, mainly completes the output of PWM ripple on the other hand.
As further prioritization scheme of the present invention, the chip model that auxiliary power module adopts is VIPer22 A, and based on the accessory power supply of VIPer22 A converter and Switch Power Transformer, output voltage waveforms is stable without larger spike.
As further prioritization scheme of the present invention, also comprise filtration module, the input of described filtration module is connected with the output of described accessory power supply, and the output of described filtration module is connected with CPLD digital control module.
As further prioritization scheme of the present invention, the chip model that described CPLD digital control module adopts is FLEX601.
Because control section have employed the digital control approach based on CPLD, the control impuls of lokb/s can be competent in rapid laser carving, the engraving of gradient engraving and small character can be completed well.In Laser cutting, because the duty ratio of the driving pulse of digital control module output is by the impact of outside non-control signal, can ensure at the lower stable power stage that works long hours.In laser engraving, can the power data of real-time response control system, simultaneously owing to being not linear relationship between the light power of laser and operating current, when the gradient is carved, can, by digital control part correction luminous power, it be made to ensure the requirement to the gradient in the engraving gradient with linear change.
In laser processing application, sometimes have much special processing request, as cutting initial period requires that light power is larger.Digital control approach can carry out satisfied corresponding new demand by update routine easily.
The response of this Laser Driven supply frequency is high, control is accurate and output current ripple is little, can ensure the work of laser long-term stability.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solution of the present invention.
Claims (5)
1. load a digital high-power driving power supply for surge protection circuit, it is characterized in that: comprise rectification filtering module, surge protection circuit, accessory power supply, CPLD digital control module, inversion boosting module, feedback circuit and comparator;
Wherein rectification filtering module, surge protection circuit, accessory power supply, CPLD digital control module, inversion boosting module are connected successively, and described inversion boosting module is also connected with CPLD digital control module by feedback module connected successively, comparator;
The AC power of 220V produces the direct voltage of 310V after rectification filtering module, then 310V direct voltage is respectively inversion boosting module and accessory power supply provides voltage after treatment through surge protection circuit, the DC power supply that 310V direct voltage is treated to 12V and 5V by accessory power supply provides reference voltage for digital control part and feedback fraction, the electric current of feedback circuit sampling inversion boosting module output, the control command exported with CPLD digital control module is compared by comparator thus controls the output current of inversion boosting module;
Described surge protection circuit comprises the first resistance, the second resistance, inductance and diode; the output head anode of described rectification filtering module is connected with one end of inductance, one end of the second resistance respectively; the other end of inductance is connected with the negative pole of diode; the positive pole of diode is connected with one end of the first resistance, and the other end of the first resistance is connected with the negative pole of output end of rectification filtering module, the other end of the second resistance respectively.
2. a kind of digital high-power driving power supply loading surge protection circuit as claimed in claim 1; it is characterized in that: inversion boosting module comprises half-bridge inversion circuit, series resonant circuit; the input of wherein said half-bridge inversion circuit is connected with the output of surge protection circuit, and the output of described half-bridge inversion circuit is connected with described series resonant circuit.
3. a kind of digital high-power driving power supply loading surge protection circuit as claimed in claim 1 or 2, is characterized in that: the chip model that auxiliary power module adopts is VIPer22 A.
4. a kind of digital high-power driving power supply loading surge protection circuit as claimed in claim 1; it is characterized in that: also comprise filtration module; the input of described filtration module is connected with the output of described accessory power supply, and the output of described filtration module is connected with CPLD digital control module.
5. a kind of digital high-power driving power supply loading surge protection circuit as claimed in claim 4, is characterized in that: the chip model that described CPLD digital control module adopts is FLEX601.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410563515.2A CN104393772A (en) | 2014-10-22 | 2014-10-22 | Digital large-power driving power supply loaded with surge protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410563515.2A CN104393772A (en) | 2014-10-22 | 2014-10-22 | Digital large-power driving power supply loaded with surge protection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN104393772A true CN104393772A (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410563515.2A Withdrawn CN104393772A (en) | 2014-10-22 | 2014-10-22 | Digital large-power driving power supply loaded with surge protection circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852597A (en) * | 2015-05-21 | 2015-08-19 | 中科天工电气控股有限公司 | Large-power numerical control driving power supply based on surge protective circuit |
| CN108631272A (en) * | 2018-06-02 | 2018-10-09 | 丹阳恒芯电子有限公司 | A kind of intelligent protection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6359717A (en) * | 1986-08-28 | 1988-03-15 | 日本電気株式会社 | Dc voltage feeder circuit |
| US20020024784A1 (en) * | 2000-08-25 | 2002-02-28 | Pinto De Oliveira Roberto | Protective relay |
-
2014
- 2014-10-22 CN CN201410563515.2A patent/CN104393772A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6359717A (en) * | 1986-08-28 | 1988-03-15 | 日本電気株式会社 | Dc voltage feeder circuit |
| US20020024784A1 (en) * | 2000-08-25 | 2002-02-28 | Pinto De Oliveira Roberto | Protective relay |
Non-Patent Citations (1)
| Title |
|---|
| 沈武: "基于CPLD的激光驱动电源的设计", 《激光技术与应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852597A (en) * | 2015-05-21 | 2015-08-19 | 中科天工电气控股有限公司 | Large-power numerical control driving power supply based on surge protective circuit |
| CN108631272A (en) * | 2018-06-02 | 2018-10-09 | 丹阳恒芯电子有限公司 | A kind of intelligent protection device |
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Application publication date: 20150304 |