CN106612110A - +/- 5KV high-frequency DC high voltage generator with settable output positive/negative polarity - Google Patents
+/- 5KV high-frequency DC high voltage generator with settable output positive/negative polarity Download PDFInfo
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- CN106612110A CN106612110A CN201510692126.4A CN201510692126A CN106612110A CN 106612110 A CN106612110 A CN 106612110A CN 201510692126 A CN201510692126 A CN 201510692126A CN 106612110 A CN106612110 A CN 106612110A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
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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
- H02M1/00—Details of apparatus for conversion
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
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Abstract
The invention discloses a +/- 5KV high-frequency DC high voltage generator with settable output positive/negative polarity, and belongs to a special-purposed DC high voltage generator of an automatic production line. the DC high voltage generator comprises a power casing, an internal structure, a power conversion circuit, a voltage multiplication and rectification unit, an output positive/negative polarity conversion unit and a control circuit; the power casing is processed in a full-aluminum-surface oxidation, wire-drawing and full-sealing manner, and internal circuit boards are physically segmented from each other according to functions, and are fixed on the casing in a stacked and embedded manner; and the power conversion circuit uses an improved single-end power conversion topological structure. To reduce the complexity of a manufacture technology of the power transformer, the secondary output voltage of the power transformer is reduced, and the output voltage is improved via the voltage multiplication and rectification unit after the power transformer. The output polarity of the DC high voltage can be controlled via positive/negative polarity settable signals.
Description
Technical field
The present invention relates to a kind of output positive-negative polarity can arrange ± 5KV high-frequency direct-current high tension generators（Maximum output current 5MA）, can be applicable to industrial production automation, intelligence manufacture and robot field.
Background technology
Since the eighties of last century Switching Power Supply seventies occurs, original prevailing linear power supply gradually instead of with its superior combination property in various application scenarios.Particularly in recent years, along with the high speed development of high power device such as field-effect transistor and insulated gate bipolar transistor, increasing extensively application is obtained, and is increasingly becoming the main power source supply of household electrical appliance, armarium, particularly industrial equipment.Especially in current industrial 4.0 and field in intelligent robotics, its application surface is wide, as many as number of applications be other electric power energy supply arrangements it is incomparable.Meanwhile, the Switching Power Supply that these fields are also applied in turn proposes increasing high performance particular/special requirement.Whether disclosure satisfy that these various particular/special requirements directly influence the intelligent and efficient of production and processing system or robot.It is exactly a very requirement with practical significance that wherein switch power source output voltage polarity can be changed at any time according to the instruction of control system host computer and actual condition.
Due to demand of the switch power source output voltage polarity automatic conversion in actual production process, particularly in the ± 5KV HVDCs output voltage of special industry application requirements.A variety of methods are suggested and are adopted, for making the high voltage direct current generator of ± 5KV VDs, while the conversion of output voltage polarity can be realized.At present, almost great majority all adopt double high voltage direct current generator schemes, it is based on+a 5KV is linear or a switching dc high tension generator and -5KV is linear or switching dc high tension generator, then using high-voltage switch gear realizing ± 5KV direct current output high pressure.As current scheme mainly uses two high voltage direct current generators, although easily realizing, volume is big, high cost, and high voltage direct current generator is based on linear work mode, and efficiency is low, need the fin of large volume., has there is the method that more use high pressure low frequency switch working method replaces linear work mode, has achieved certain progress in developing rapidly and extensively applying due to high-voltage switch power supply in recent years.But the program still has clearly disadvantageous part：As switch operating frequency is low, power consumption is larger.Due to still, using double high voltage direct current generator schemes, volume is still larger, and high cost, in addition, scheme, malfunction before output polarity conversion process technology is adopted, dock difficulty with intelligent automation control system.
The content of the invention
To solve the problems referred to above that prior art is present, the present invention proposes the 1+1/N technology Based on Integrate System thinkings based on high-frequency direct-current high tension generator, devises a kind of output positive-negative polarity and can arrange ± 5KV high-frequency direct-current high tension generators.Volume can be greatly lowered, work efficiency is improved, while having extremely flexible polarity to arrange function.
To achieve these goals, technical scheme is as follows：A kind of output positive-negative polarity can arrange ± 5KV high-frequency direct-currents high tension generator and is made up of power supply casing and circuit two large divisions as shown in drawings, and wherein power circuit part point includes power conversion circuit, voltage multiplying rectifier, output polarity permutator, can arrange output positive-negative polarity and control circuit etc. part composition.
Described power supply housing part includes drain pan 1, intermediate layer dividing plate 8, upper lid 7, bottom fin 10, fuse box 11, earthing screw and safety ground wing nut 13, upper electric indication LED green light 2 and High voltage output indication LED red light 3.
The casing drain pan 1 is fixed using mode connects for screw with intermediate layer dividing plate 8 and upper lid 7 respectively, control board 6 is connected by screw and is fixed on intermediate layer dividing plate 8, power circuit board 4 is connected by screw and is fixed on 1 bottom surface of drain pan, power circuit board 4 and output polarity conversion switch circuit plate 9 are fixed together by stacking and embedded being welded to connect, and drain pan 1 plays overall supporting role.The power tube that the bottom fin 110 passes through screw and welding with power circuit board 4 is connected jointly.Power supply casing entire body adopts aluminum alloy surface wire drawing and anodized, all control board power devices are connected by screw and are fixed on casing surface, radiated by casing surface, simultaneously, power supply casing all component is connected by screw to be fixed so as to ensure electrical connection, connects the earth by casing.1 front panel of power supply drain pan is connected by screw fixed fuse box 11,1 front panel of power supply drain pan reserves slot, the 8 foot connector binding post 5 of input being welded in control board 6 is leant out, upper electric indication LED green light 2, High voltage output indication LED red light 3 are connected by screw and are fixed on 1 front panel of drain pan.1 rear board of power supply drain pan is connected by screw fixed high tension cable protection protecting pipe 12, while output is welded on the high-voltage cable on polarity switching plate.Geodesic is fixed thereon by 1 rear board of drain pan pre- sunk screw 13 thereon by wing nut, so as to ensure voltage casing whole body and internal circuit secure connection the earth.
Described power circuit part by three pieces of circuit board groups into：Control board 6, power circuit board 4 and output polarity conversion switch circuit plate 9.The control circuit includes High voltage output start and stop part, and voltage stabilizing adjusts part, current limliting and adjusts part, voltage measuring section, current measurement part, given voltage segment, overvoltage protection self-locking part, over current protecting self-locking part, voltage output display portion, electric current output display part, PWM control sections and output polarity setting control section.Power circuit board includes single-ended power conversion part, power transformer part, output voltage multiplying rectifier part, output high direct voltage sampling section, output DC current sampling section.Output polarity conversion switch circuit plate includes four groups of high pressure permutatoies and short-circuit overload protection unit.
Output high direct voltage and electric current are by power circuit board up-sampling circuit part collection feedback DC voltage value and current value, being input to voltage measuring section and current measurement part carries out voltage transformation normalized, one is sent to voltage output display portion and electric current output display part, for the monitoring and display of output voltage and electric current；Another part is input to the stability for entering line output voltage and electric current through PWM control sections again in voltage-regulation voltage-stabilization part and current stabilization part and adjusts.The square-wave signal of the variable duty ratio that PWM control sections produce goes to control power tube driving power transformator, through the high direct voltage value that single-ended power conversion part, power transformer part, output voltage multiplying rectifier part, output are arranged as required to.Remove the major loop part of these power flows, other auxiliary circuits include DC12V power transmissions, and power supply electrifying indicates that green LED lamp is lighted, High voltage output start stop signal control power work output high voltage startup, high level control HT pilot red LED lamp is lighted, and starts High voltage output.Low level control HT pilot red LED lamp is extinguished, and stops High voltage output.Polarity selects P/N signals, high voltage output positive high voltage, low level output low-voltage.Meanwhile, P/N signals can be selected come the reverse of polarity by arranging polarity when High voltage output start stop signal is low level.When High voltage output start stop signal is low level, output voltage polarity reversing switch can just switch over action.
During present invention work, the operation principle of each ingredient is as follows：
DC24V power supplys are connected, is powered to power source internal circuit by electric fuse thereon, power supply electrifying indicates that green LED lamp is bright.At this moment power supply function operation can just be carried out.The DC24V power supplys of input are through reversal switch mu balanced circuit generation -15V, at the same time, the DC24V power supplys of input produce the reference power supply and the+5V power supplys for controlling TTL circuits of+10V again through internal mu balanced circuit, and ± the 15V for producing then forms the accessory power supply needed for internal control circuit work.
High voltage output start stop signal control power work output high pressure, during standby quitting work, the port is arranged to low level, and at this moment HT pilot red LED lamp is extinguished, and stops High voltage output.
The positive-negative polarity of out-put supply is set according to practical application, given voltage is arranged according to practical application then, wherein given voltage 0 ~ 10V correspondence output 0 ~ ± 5KV of DC voltage.
High voltage output start stop signal is set to into high level, starts High voltage output, at this moment HT pilot red LED lamp is lighted, start simultaneously at output high direct voltage, the brightness of HT pilot red LED lamp can become more and more brighter with the rising of output voltage.
The high direct voltage voltage of output is sampled by voltage sampling circuit；The DC current of output is sampled by current sampling circuit.Voltage sample value generates voltage sample normalized voltage value by voltage conversion circuit process, and 0 ~ ± 5KV, 0 ~ 10V of correspondence, current sampling data generate current sample normalized voltage value, 0 ~ 5MA, 0 ~ 10V of correspondence by voltage conversion circuit process.Voltage sample normalized voltage value is input to output voltage display circuit and is amplified raising load capacity, drives the voltage of rear class to show observation circuit；Current sample normalized voltage value is input to output current display circuit and is amplified raising load capacity, drives the electric current of rear class to show observation circuit.
The voltage stabilizing of voltage sample normalized voltage value input simultaneously adjusts loop；The electric current limliting of current sample normalized voltage value input is adjusted determines loop, carry out common adjustment process, it is input to PWM and adjusts circuit, the adjustable control square wave of output duty cycle, carry out drive control power tube, control power tube drives power transformer just level work, carry out energy pick-up, export transformer secondary output, the secondary HT waveform for obtaining is exported in transformator high direct voltage waveform is generated by the voltage multiplying rectifier filtering of rear class, again through by output voltage polarity reversing switch, exporting in load eventually through high tension cable.
The magnitude of voltage that voltage stabilizing regulation loop can be obtained with voltage sampling circuit according to the 0 ~ 10V of setting voltage of input is compared, DC voltage to exporting is controlled, so as to ensure, in the case of input voltage and load change, still can to keep the high-voltage dc voltage of stable output.Furthermore, it is possible to pass through to change 0 ~ 10V of setting voltage, the arbitrarily 0 ~ ± 5KV of high-voltage dc voltage of setting output.The magnitude of voltage that current limliting regulation loop can be obtained with current sampling circuit according to the internal reference voltage 10V of input is compared, DC current to exporting is controlled, so as to ensure in the case of input voltage and load change, under particularly severe and extreme working condition, as when overload and short circuit, the DC current of power supply output is limited in 5MA.Protection power supply will not be burnt because of overload and short circuit.
Output positive-negative polarity can arrange control section and the mutual lock control of High voltage output on off control signal section, when High voltage output on off control signal is set to high level, High voltage output starts, and at this moment exports positive-negative polarity and can arrange control section locking, it is impossible to change high direct voltage output positive-negative polarity；When High voltage output on off control signal is set to low level, High voltage output stops, at this moment export positive-negative polarity and control section unblock can be set, this height that can be by positive-negative polarity setting signal realizes high direct voltage output positive-negative polarity conversion, is converted to negative polarity output by positive pole or is converted to positive polarity output by negative pole.When positive-negative polarity setting control signal is high level, high direct voltage is output as positive polarity；Positive-negative polarity arrange control signal for low level when, high direct voltage is output as negative polarity；
The conversion of output positive-negative polarity is constituted by 1, switch 2,4 four switches of switch 3 and switch is switched, and two switches 1 therein connect one end of the secondary of power transformers with switch 2；Other two switches 3 and switch 4 connect the outfan of output voltage current rectifying and wave filtering circuit.Switch 1, switch 3 constitute linkage switch group 1, switch 2, switch 4 constitute linkage switch groups 2, by export positive-negative polarity can arrange control section drive linkage switch group 1 and linkage switch group 2 respectively action switching the positive-negative polarity of output high pressure.
Compared with prior art, the present invention has following improvement effect：
1st, as the present invention proposes the 1+1/N technology Based on Integrate System thinkings based on high-frequency direct-current high tension generator, designed by i.e. integrated a set of control circuit and power conversion circuit and two sets of voltage multiplying rectifier filter circuit bases, and in the past conventional scheme is to carry out selective polarity conversion using a set of positive direct-current power supply and a set of negative direct current.Therefore other implementations before the design is compared, are significantly improved at aspects such as small volume, efficiency height.
2nd, power supply of the present invention adopts full alumiseal casing, surface to carry out wire drawing oxidation processes, and outward appearance is beautiful, durable.Power device is fixed contact directly to be radiated on aluminum casing surface, is eliminated the need for conventional heat radiating fin structure, is saved volume, reduce cost.Aluminum casing whole body electric conductivity is utilized simultaneously, is realized convenient ground connection, and is solved anti-interference problem well.
3rd, all circuit boards of the invention are sealed within full aluminum casing, easily solve the jamproof problems of EMI.Circuit board employs stacking and embedded layout among casing and puts fixed form.
4th, high direct voltage output polarity conversion control circuit of the invention adopts interlocking control circuit, and the self-locking when power work exports high pressure keeps；When power standby output high pressure stops, current potential reversion can be carried out polarity is set, drive the action of switching switch.Efficiently avoid carries out the danger of the sparking electric discharge brought by polarity switching in the case of High voltage output.
5th, high direct voltage output change-over switch circuit of the invention switches reversion output polarity simultaneously using the secondary output one end of output power transformer and the switch of two node of voltage multiplying rectifier filter circuit one end four.Can most be simplified to and only use a set of control circuit and power circuit adds two sets of voltage multiplying rectifier filter circuits to be capable of achieving the conversion of high direct voltage output polarity.
6th, the electric power output voltage designed by the present invention is up to 5KV, in order to ensure that power safety is reliably run, devise special output polarity permutator, circuit board has carried out special insulation processing wiring, so that 5KV output high-pressure situations under, can with it is safe and reliable, stably continuously worked.
7th, the high-voltage power transformator that the present invention is adopted takes special insulation technology and processes, ensure that high pressure is not struck sparks, simultaneously, in order to simplify the complex manufacturing technology of power transformer, power transformer secondary output voltage value is reduced, rear class is lifted using voltage multiplying rectifier filter circuit with realizing output voltage.
Description of the drawings
Structural representation of the accompanying drawing 1 for the present invention.
In Fig. 1：1st, drain pan, 2, upper electric indication LED green light, 3, High voltage output indication LED red light, 4, power circuit board, 5,8 foot connector binding posts of input, 6, control board, 7, upper lid, 8, intermediate layer dividing plate, 9, output polarity conversion switch circuit plate, 10, bottom fin, 11, fuse box, 12, high tension cable protection protecting pipe, 13, earthing screw and safety ground wing nut.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
A kind of output positive-negative polarity can arrange ± 5KV high-frequency direct-currents high tension generator and is made up of power supply casing and circuit two large divisions as shown in drawings, and wherein power circuit part point includes power conversion circuit, voltage multiplying rectifier, output polarity permutator, can arrange output positive-negative polarity and control circuit etc. part composition.Described power supply housing part includes drain pan 1, intermediate layer dividing plate 8, upper lid 7, bottom fin 10, fuse box 11, earthing screw and safety ground wing nut 13, upper electric indication LED green light 2 and High voltage output indication LED red light 3.The casing drain pan 1 is fixed using mode connects for screw with intermediate layer dividing plate 8 and upper lid 7 respectively, control board 6 is connected by screw and is fixed on intermediate layer dividing plate 8, power circuit board 4 is connected by screw and is fixed on 1 bottom surface of drain pan, power circuit board 4 and output polarity conversion switch circuit plate 9 are fixed together by stacking and embedded being welded to connect, and drain pan 1 plays overall supporting role.The power tube that the bottom fin 110 passes through screw and welding with power circuit board 4 is connected jointly.Power supply casing entire body adopts aluminum alloy surface wire drawing and anodized, all control board power devices are connected by screw and are fixed on casing surface, radiated by casing surface, simultaneously, power supply casing all component is connected by screw to be fixed so as to ensure electrical connection, connects the earth by casing.1 front panel of power supply drain pan is connected by screw fixed fuse box 11,1 front panel of power supply drain pan reserves slot, the 8 foot connector binding post 5 of input being welded in control board 6 is leant out, upper electric indication LED green light 2, High voltage output indication LED red light 3 are connected by screw and are fixed on 1 front panel of drain pan.1 rear board of power supply drain pan is connected by screw fixed high tension cable protection protecting pipe 12, while output is welded on the high-voltage cable on polarity switching plate.Geodesic is fixed thereon by 1 rear board of drain pan pre- sunk screw 13 thereon by wing nut, so as to ensure voltage casing whole body and internal circuit secure connection the earth.Described power circuit part by three pieces of circuit board groups into：Control board 6, power circuit board 4 and output polarity conversion switch circuit plate 9.The control circuit includes High voltage output start and stop part, and voltage stabilizing adjusts part, current limliting and adjusts part, voltage measuring section, current measurement part, given voltage segment, overvoltage protection self-locking part, over current protecting self-locking part, voltage output display portion, electric current output display part, PWM control sections and output polarity setting control section.Power circuit board includes single-ended power conversion part, power transformer part, output voltage multiplying rectifier part, output high direct voltage sampling section, output DC current sampling section.Output polarity conversion switch circuit plate includes four groups of high pressure permutatoies and short-circuit overload protection unit.Output high direct voltage and electric current are by power circuit board up-sampling circuit part collection feedback DC voltage value and current value, being input to voltage measuring section and current measurement part carries out voltage transformation normalized, one is sent to voltage output display portion and electric current output display part, for the monitoring and display of output voltage and electric current；Another part is input to the stability for entering line output voltage and electric current through PWM control sections again in voltage-regulation voltage-stabilization part and current stabilization part and adjusts.The square-wave signal of the variable duty ratio that PWM control sections produce goes to control power tube driving power transformator, through the high direct voltage value that single-ended power conversion part, power transformer part, output voltage multiplying rectifier part, output are arranged as required to.Remove the major loop part of these power flows, other auxiliary circuits include DC12V power transmissions, and power supply electrifying indicates that green LED lamp is lighted, High voltage output start stop signal control power work output high voltage startup, high level control HT pilot red LED lamp is lighted, and starts High voltage output.Low level control HT pilot red LED lamp is extinguished, and stops High voltage output.Polarity selects P/N signals, high voltage output positive high voltage, low level output low-voltage.Meanwhile, P/N signals can be selected come the reverse of polarity by arranging polarity when High voltage output start stop signal is low level.When High voltage output start stop signal is low level, output voltage polarity reversing switch can just switch over action.During present invention work, the operation principle of each ingredient is as follows：DC24V power supplys are connected, is powered to power source internal circuit by electric fuse thereon, power supply electrifying indicates that green LED lamp is bright.At this moment power supply function operation can just be carried out.The DC24V power supplys of input are through reversal switch mu balanced circuit generation -15V, at the same time, the DC24V power supplys of input produce the reference power supply and the+5V power supplys for controlling TTL circuits of+10V again through internal mu balanced circuit, and ± the 15V for producing then forms the accessory power supply needed for internal control circuit work.High voltage output start stop signal control power work output high pressure, during standby quitting work, the port is arranged to low level, and at this moment HT pilot red LED lamp is extinguished, and stops High voltage output.The positive-negative polarity of out-put supply is set according to practical application, given voltage is arranged according to practical application then, wherein given voltage 0 ~ 10V correspondence output 0 ~ ± 5KV of DC voltage.High voltage output start stop signal is set to into high level, starts High voltage output, at this moment HT pilot red LED lamp is lighted, start simultaneously at output high direct voltage, the brightness of HT pilot red LED lamp can become more and more brighter with the rising of output voltage.The high direct voltage voltage of output is sampled by voltage sampling circuit；The DC current of output is sampled by current sampling circuit.Voltage sample value generates voltage sample normalized voltage value by voltage conversion circuit process, and 0 ~ ± 5KV, 0 ~ 10V of correspondence, current sampling data generate current sample normalized voltage value, 0 ~ 5MA, 0 ~ 10V of correspondence by voltage conversion circuit process.Voltage sample normalized voltage value is input to output voltage display circuit and is amplified raising load capacity, drives the voltage of rear class to show observation circuit；Current sample normalized voltage value is input to output current display circuit and is amplified raising load capacity, drives the electric current of rear class to show observation circuit.The voltage stabilizing of voltage sample normalized voltage value input simultaneously adjusts loop；The electric current limliting of current sample normalized voltage value input is adjusted determines loop, carry out common adjustment process, it is input to PWM and adjusts circuit, the adjustable control square wave of output duty cycle, carry out drive control power tube, control power tube drives power transformer just level work, carry out energy pick-up, export transformer secondary output, the secondary HT waveform for obtaining is exported in transformator high direct voltage waveform is generated by the voltage multiplying rectifier filtering of rear class, again through by output voltage polarity reversing switch, exporting in load eventually through high tension cable.The magnitude of voltage that voltage stabilizing regulation loop can be obtained with voltage sampling circuit according to the 0 ~ 10V of setting voltage of input is compared, DC voltage to exporting is controlled, so as to ensure, in the case of input voltage and load change, still can to keep the high-voltage dc voltage of stable output.Furthermore, it is possible to pass through to change 0 ~ 10V of setting voltage, the arbitrarily 0 ~ ± 5KV of high-voltage dc voltage of setting output.The magnitude of voltage that current limliting regulation loop can be obtained with current sampling circuit according to the internal reference voltage 10V of input is compared, DC current to exporting is controlled, so as to ensure in the case of input voltage and load change, under particularly severe and extreme working condition, as when overload and short circuit, the DC current of power supply output is limited in 5MA.Protection power supply will not be burnt because of overload and short circuit.Output positive-negative polarity can arrange control section and the mutual lock control of High voltage output on off control signal section, when High voltage output on off control signal is set to high level, High voltage output starts, and at this moment exports positive-negative polarity and can arrange control section locking, it is impossible to change high direct voltage output positive-negative polarity；When High voltage output on off control signal is set to low level, High voltage output stops, at this moment export positive-negative polarity and control section unblock can be set, this height that can be by positive-negative polarity setting signal realizes high direct voltage output positive-negative polarity conversion, is converted to negative polarity output by positive pole or is converted to positive polarity output by negative pole.When positive-negative polarity setting control signal is high level, high direct voltage is output as positive polarity；Positive-negative polarity arrange control signal for low level when, high direct voltage is output as negative polarity；The conversion of output positive-negative polarity is constituted by 1, switch 2,4 four switches of switch 3 and switch is switched, and two switches 1 therein connect one end of the secondary of power transformers with switch 2；Other two switches 3 and switch 4 connect the outfan of output voltage current rectifying and wave filtering circuit.Switch 1, switch 3 constitute linkage switch group 1, switch 2, switch 4 constitute linkage switch groups 2, by export positive-negative polarity can arrange control section drive linkage switch group 1 and linkage switch group 2 respectively action switching the positive-negative polarity of output high pressure.
Claims (5)
1. a kind of output positive-negative polarity can arrange ± 5KV high-frequency direct-current high tension generators, it is characterised in that:It is made up of power supply casing and circuit two large divisions, wherein power circuit part point includes power conversion circuit, voltage multiplying rectifier, output polarity permutator, can arrange output positive-negative polarity and control circuit etc. part composition.
2. a kind of output positive-negative polarity according to claim 1 can arrange ± 5KV high-frequency direct-current high tension generators, it is characterised in that:A kind of described power supply housing part includes drain pan, intermediate layer dividing plate, upper lid, bottom fin, fuse box, earthing screw and safety ground wing nut, upper electric indication LED green light and High voltage output indication LED red light.
3. a kind of output positive-negative polarity according to claim 1 can arrange ± 5KV high-frequency direct-current high tension generators, it is characterised in that:The casing drain pan is fixed using mode connects for screw with intermediate layer dividing plate and upper lid respectively，Control board is connected by screw and is fixed on intermediate layer dividing plate，Power circuit board is connected by screw and is fixed on drain pan bottom surface，Power circuit board and output polarity conversion switch circuit plate are fixed together by stacking and embedded being welded to connect，Drain pan plays overall supporting role,The power tube that the bottom fin passes through screw and welding with power circuit board is connected jointly,Power supply casing entire body adopts aluminum alloy surface wire drawing and anodized，All control board power devices are connected by screw and are fixed on casing surface，Radiated by casing surface，Simultaneously，Power supply casing all component is connected by screw fixed so as to ensure electrical connection，The earth is connect by casing,Power supply drain pan front panel is connected by screw fixed fuse box，Power supply drain pan front panel reserves slot，Lean out the input pin connector binding post being welded in control board，Upper electric indication LED green light、High voltage output indication LED red light is connected by screw and is fixed on drain pan front panel,Power supply drain pan rear board is connected by screw fixed high tension cable protection protecting pipe，Output simultaneously is welded on the high-voltage cable on polarity switching plate,The pre- sunk screw of drain pan rear board，Geodesic is fixed thereon by wing nut thereon，So as to ensure voltage casing whole body and internal circuit secure connection the earth.
4. a kind of output positive-negative polarity according to claim 1 can arrange ± 5KV high-frequency direct-current high tension generators, it is characterised in that:Described power circuit part by three pieces of circuit board groups into：Control board, power circuit board and output polarity conversion switch circuit plate, the control circuit includes High voltage output start and stop part, voltage stabilizing adjusts part, current limliting adjusts part, voltage measuring section, current measurement part, given voltage segment, overvoltage protection self-locking part, over current protecting self-locking part, voltage output display portion, electric current output display part, PWM control sections and output polarity arrange control section, power circuit board includes single-ended power conversion part, power transformer part, output voltage multiplying rectifier part, output high direct voltage sampling section, output DC current sampling section, output polarity conversion switch circuit plate includes four groups of high pressure permutatoies and short-circuit overload protection unit.
5. a kind of output positive-negative polarity according to claim 1 can arrange ± 5KV high-frequency direct-current high tension generators, it is characterised in that:Output high direct voltage and electric current are by power circuit board up-sampling circuit part collection feedback DC voltage value and current value, being input to voltage measuring section and current measurement part carries out voltage transformation normalized, one is sent to voltage output display portion and electric current output display part, for the monitoring and display of output voltage and electric current；Another part is input to the stability for entering line output voltage and electric current through PWM control sections again in voltage-regulation voltage-stabilization part and current stabilization part and adjusts,The square-wave signal of the variable duty ratio that PWM control sections produce goes to control power tube driving power transformator，Through single-ended power conversion part、Power transformer part、Output voltage multiplying rectifier part、The high direct voltage value that output is arranged as required to,Remove the major loop part of these power flows，Other auxiliary circuits include DC12V power transmissions，Power supply electrifying indicates that green LED lamp is lighted，High voltage output start stop signal control power work output high voltage startup，High level control HT pilot red LED lamp is lighted，Start High voltage output,Low level control HT pilot red LED lamp is extinguished，Stop High voltage output,Polarity selects P/N signals，High voltage exports positive high voltage，Low level output low-voltage,Simultaneously，High voltage output start stop signal can select P/N signals come the reverse of polarity by arranging polarity when being low level,When High voltage output start stop signal is low level, output voltage polarity reversing switch can just switch over action.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462374A (en) * | 2018-03-30 | 2018-08-28 | 湖州旭源电气科技有限公司 | A kind of adjustable Switching Power Supply |
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