CN207083026U - A kind of high energy pulse power control circuit - Google Patents
A kind of high energy pulse power control circuit Download PDFInfo
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- CN207083026U CN207083026U CN201720770924.9U CN201720770924U CN207083026U CN 207083026 U CN207083026 U CN 207083026U CN 201720770924 U CN201720770924 U CN 201720770924U CN 207083026 U CN207083026 U CN 207083026U
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Abstract
The utility model provides a kind of high energy pulse power control circuit,Including prime dc source,First storage capacitor,Second storage capacitor,3rd energy storage electricity,The prime dc source,First storage capacitor,One end of second storage capacitor and the 3rd storage capacitor is connected with power switch,Power switch is also connected with one end of load,The other end of load is connected with prime dc source,The other end and inductance connection of second storage capacitor,Inductance is connected with the colelctor electrode of first switch pipe and forms charging control circuit,Inductance is connected with the emitter stage of second switch pipe and forms charge/discharge control circuit,The colelctor electrode of the second switch pipe is connected with fly-wheel diode,One end of fly-wheel diode is connected with the second storage capacitor and the 3rd storage capacitor,The other end is connected with power switch,The emitter stage of the first switch pipe is connected with prime dc source and power switch.High energy pulse power control circuit provided by the utility model can improve the amplitude equivalent corresponding to different duty, can accurately meet effective current and average current needs.
Description
Technical field
Power Electronic Circuit field is the utility model is related to, more particularly to a kind of high energy pulse power control circuit.
Background technology
The pulse power is a kind of a kind of conventional power supply for carrying out copped wave output to direct current using device for power switching, and pulse is electric
Source is widely used in electric machining industry at present, and it is configured on precision ECM cutting machines, to meet to be electrolysed into
Electric current in journey needs, and is allowed to realize precision cutting process, is a kind of emerging processing technology.The existing pulse power mainly has
The form such as high voltage-small current, low-voltage, high-current, constant pressure source, constant-current source, constant power source.The currently used plating pulse power, sun
Mainly low-voltage, high-current, the constant pressure source isopulse electricity such as the pole oxidation pulse power, Electrolyzed Processing power supply, electrical discharge machining pulse power
Source, this kind of pulse power are typically to export pulse current by buck chopper on the positive pole of high-power DC power supply, these electricity
Source is all difficult to effective current and average current corresponding under accurate adjustment optional frequency, dutycycle.
The low-voltage, high-current pulse power is a kind of optional frequency, adjusts dutycycle to meet setting for load current demand
It is standby, it is undesirable to which that frequency and dutycycle influence output current simultaneously.But the existing low-voltage, high-current pulse power works as dutycycle not
Become, electric current also changes therewith during regulating frequency, thus current amplitude is also changed, it is difficult to amplitude equivalent pulse is realized,
Accurately effective current and average current can not be weighed with dutycycle.
Utility model content
In order to solve the above technical problems, the utility model patent purpose is to devise a kind of high energy pulse power supply
Circuit, the amplitude equivalent corresponding to different duty can be improved, can accurately meet effective current and average current needs.
High energy pulse power control circuit provided by the utility model is by setting a underlying amplitude equivalent, then effectively
The charge and discharge process of storage capacitor is controlled, electricity is accordingly increased by the ratio release of underlying amplitude equivalent to different duty,
To improve the amplitude equivalent corresponding to different duty, the energy match of direct current and pulse current is preferably realized, so as to
Meet the current needs of precision ECM machining.The utility model is realized particular by following technical scheme：
A kind of high energy pulse power control circuit, including prime dc source DC, the prime dc source DC and first
Storage capacitor C1 is in parallel, and the first storage capacitor C1 is in parallel with the second storage capacitor C2, the 3rd storage capacitor C3, the prime direct current
Power supply DC, the first storage capacitor C1, the second storage capacitor C2 and the 3rd storage capacitor C3 one end are connected with power switch Q, work(
Rate switch Q is also connected with loading R2 one end, and the other end for loading R2 is connected with prime dc source DC, the second energy storage electricity
The other end for holding C2 is connected with inductance L1, and inductance L1 is connected with first switch pipe Q3 colelctor electrode and forms charging control circuit,
Inductance L1 is connected with second switch pipe Q4 emitter stage and forms charge/discharge control circuit, the base stage of the first switch pipe Q3 and
Drive circuit of the two switching tube Q4 base stage respectively with periphery is connected, the colelctor electrode and fly-wheel diode of the second switch pipe Q4
D1 connections, one end of sustained diode 1 are connected with the second storage capacitor C2 and the 3rd storage capacitor C3, and the other end is opened with power
Q connections are closed, the emitter stage of the first switch pipe Q3 is connected with prime dc source DC and power switch Q.
Specifically, first switch pipe Q3 described in the utility model base stage and second switch pipe Q4 base stage are respectively with
One drive circuit is connected, and the power switch Q is connected with the second drive circuit, first drive circuit and the second drive circuit
It is connected respectively by the first PWM circuit and the second PWM circuit with governor circuit.
Specifically, power switch Q described in the utility model is formed by multiple identical IPM wired in parallel, each IPM module
Both positive and negative polarity on be all connected with the storage capacitor C3 of identical the 3rd.
Specifically, prime dc source DC described in the utility model is composed in parallel by the inverter of multiple equal-wattages.
Specifically, the first storage capacitor C1 described in the utility model, the second storage capacitor C2 and the 3rd storage capacitor C3 are each
From being all that multiple identical electric capacity are formed in parallel, the size of its capacitance values is determined by the size of circuit base magnitude current, together
When should meet C2 ＞ C1 ＞ C3, and three is related to the operation power of load.
Specifically, prime dc source DC described in the utility model negative pole is connected with power switch Q, positive pole directly with
The load R2 connections.
Specifically, sub-frequency square wave arteries and veins of the high energy pulse power control circuit described in the utility model by using lower frequency
Punching, changes its dutycycle, quantitative packing output is carried out to dominant frequency pulse, and change the big of pulse bag by adjusting its dutycycle
It is small.
Specifically, during prime dc source DC work described in the utility model, every group of IPM modules conducting one is controlled in order
Individual bag, and close addition in order will be each wrapped, then circulate and perform according to the N doubling times in sub-frequency square-wave pulse cycle, wherein N
For the group number in parallel of IPM modules.
Specifically, the circuit that the utility model is formed by multiple identical IPM wired in parallel, controls every group of IPM to lead in order
A logical bag, the size of bag be 100% dutycycle, D2=1, and will each wrap close addition in order, now total effectively electric
It is exactly underlying amplitude electric current that stream, which is converted to magnitude current obtained from single wrap,.
Specifically, the utility model high energy pulse is quantification of：High energy magnitude current=N × underlying amplitude electric current；
Or it is：High energy magnitude current=underlying amplitude electric current ÷ D1；
Wherein D1For dominant frequency dutycycle, N is IPM parallel connection ways.
High energy pulse power control circuit provided by the utility model has advantages below compared with prior art：
1st, in the case where dutycycle and magnitude current are constant, regulating frequency does not influence the size of pulse output circuit；
2nd, underlying amplitude equivalent is provided, to improve the reference ratio of pulse energy；
3rd, the high-energy under small dutycycle can be achieved, the amplitude equivalent corresponding to different duty is improved, so as to meet
Loading demand；
4th, solve the problems, such as conduction loss of the high-power switch device to energy storage discharge capacity, pulse current is complied fully with square wave
The calculating rule of pulse.
High energy pulse power control circuit provided by the utility model, it can preferably realize the electricity of stable state electrical-chemistry method
Stream needs.
Brief description of the drawings
The utility model embodiment is described further referring to the drawings, wherein：
Fig. 1 is the circuit structure diagram of the utility model high energy pulse power control circuit；
Fig. 2 is the packing additive process schematic diagram of the utility model high energy pulse power control circuit；
Fig. 3 is the circuit diagram of the PWM circuit of the utility model high energy pulse power control circuit；
Fig. 4 is the circuit diagram of the governor circuit of the utility model high energy pulse power control circuit.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The low-voltage, high-current pulse power is a kind of optional frequency, adjusts dutycycle to meet setting for load current demand
It is standby, thus the low-voltage, high-current pulse power is not intended to frequency and dutycycle while influences output current, it is electric current to only want to frequency
Attribute, duty cycle adjustment size of current.But in the prior art, when dutycycle is constant, electric current also changes therewith during regulating frequency,
Illustrate that current amplitude is changed, thus accurately cannot weigh effective current and average current with dutycycle.This practicality
The high energy pulse power control circuit of new offer, and pulse output form is modulated, current amplitude is fully achieved not with frequency
Change with dutycycle and change, dutycycle only changes effective current and average current, and meets the calculating rule of square-wave pulse,
Preferably resolve pulse underlying amplitude equivalent conservation.
The utility model proposes a kind of high energy pulse power control circuit, referring to Fig. 1, including prime dc source
DC, the prime dc source DC is in parallel with the first storage capacitor C1, the first storage capacitor C1 and the second storage capacitor C2, the 3rd
Storage capacitor C3 is in parallel, the prime dc source DC, the first storage capacitor C1, the second storage capacitor C2 and the 3rd storage capacitor
C3 one end is connected with power switch Q, and power switch Q is also connected with loading R2 one end, and the other end and the prime for loading R2 are straight
Power supply DC connections are flowed, the other end of the second storage capacitor C2 is connected with inductance L1, inductance L1 and first switch pipe Q3 collection
Electrode connects and forms charging control circuit, and inductance L1 is connected with second switch pipe Q4 emitter stage and forms control of discharge electricity
The drive circuit of road, the base stage of the first switch pipe Q3 and second switch pipe Q4 base stage respectively with periphery is connected, and described the
Two switching tube Q4 colelctor electrode is connected with sustained diode 1, one end of sustained diode 1 and the second storage capacitor C2 and the
Three storage capacitor C3 connections, the other end are connected with power switch Q, emitter stage and the prime dc source of the first switch pipe Q3
DC connects with power switch Q.
Specifically, Q3, Q4 switching device in Fig. 1 should be in packing superposition cycle (T) interior alternate run, wherein Q3
Run during IPM is turned off, Q4 is run during IPM is turned on, and is automatically generated accordingly by specific mathematical model by single-chip microcomputer
Working frequency and dutycycle are controlled.
Specifically, the base stage of the first switch pipe Q3 and second switch pipe Q4 base stage connect with the first drive circuit respectively
Connect, the power switch Q is connected with the second drive circuit, and first drive circuit and the second drive circuit pass through first respectively
PWM circuit and the second PWM circuit are connected with governor circuit.Refer to Fig. 3 and Fig. 4, the first PWM circuit and
Second PWM circuit uses existing PWM circuit；Governor circuit is controlled using single-chip microcomputer.
Specifically, the prime dc source DC is composed in parallel by the inverter of multiple equal-wattages.On solving
The technical problem stated, prime dc source DC are still the basis of whole power supply.Dc source DC has following basic demand：Its equivalent
Internal resistance should meet the application of load, that is, the minimum current that should be able to reach under minimum voltage.Therefore the utility model
Prime dc source DC employs multiple identical inverter Parallel opertation structures, can so expand power, and and can meets
Equivalent internal resistance demand.
Specifically, the first storage capacitor C1, the second storage capacitor C2 and the 3rd storage capacitor C3 are each multiple identical
Electric capacity be formed in parallel, the size of its capacitance values is determined by the size of circuit base magnitude current, and related to power.
Specifically, the power switch Q is formed by multiple identical IPM wired in parallel, on the both positive and negative polarity of each IPM module
All it is connected with the storage capacitor C3 of identical the 3rd.
Specifically, Q3 and L1 composition charging control circuits, and run during IPM is turned off, it controls frequency for f3, accounted for
Empty ratio is D3, and corresponding data is automatically generated by system.Q4 and L1 composition charge/discharge control circuits, and run during IPM is turned on,
It to control frequency be f4, dutycycle D4, corresponding data is automatically generated by system.
Specifically, the negative pole of the prime dc source DC is connected with power switch Q, positive pole directly connects with the load R2
Connect.The power supply is mainly characterized by negative pole copped wave, and positive pole is by the through loads of DC.
The parameter of above-mentioned all devices determines that not unique data values can be according to this by base current amplitude equivalent
Principle carries out expansion change.
So-called high energy pulse, it is exactly substantially amplitude equivalent pulse, the spy of electric current can be reduced using pulse duty factor
Point, in the case where underlying amplitude equivalent is constant, the amplitude equivalent improved corresponding to different duty is exactly to improve pulse energy
Approach.Then the utility model effectively controls the charge and discharge process of storage capacitor, given by setting a underlying amplitude equivalent
Different duty accordingly increases electricity by the ratio release of underlying amplitude equivalent, to improve the high-amplitude corresponding to different duty
Worthwhile amount, the energy match of direct current and pulse current is preferably realized, so as to meet the electric current of precision ECM machining
Demand.High energy pulse power control circuit specific implementation principle provided by the utility model is as follows：
In order to solve pulse energy conservation, we have proposed " packing " concept, that is, by using lower frequency
Sub-frequency square-wave pulse, change its dutycycle D2, quantitative packing output carried out to dominant frequency pulse, and change by adjusting dutycycle D2
Become the size of pulse bag.The sub-frequency square-wave pulse will select suitably, and its target ensures output of being packed under any dutycycle
Dominant frequency pulse is unable to appearance potential and pulled down, and the current potential of all pulses should be contour in bag.
Determine underlying amplitude equivalent, be in order to provide one with reference to ratio to high-energy corresponding to different duty, it
Basic characteristics are that current amplitude is constant under arbitrarily packing dutycycle.Therefore, the power switch Q uses multiple identical IPM moulds
Block is formed in parallel, and the storage capacitor C3 of identical the 3rd is connected with the both positive and negative polarity of each IPM module.Lead to during power work
Cross governor circuit controls every group of IPM module to turn on a bag in order, and the size of bag is 100% dutycycle (D2=1), and will be every
Individual bag is close in order to be added, and total effective current conversion now to magnitude current obtained from single wrap is exactly underlying amplitude
Electric current.
The definition of high energy pulse：Amplitude equivalent=N × underlying amplitude equivalent of high energy pulse.When power work, load
R2 resistance is constantly reducing, and electric current gradually increases, when underlying amplitude equivalent is insufficient for load power demand, storage capacitor
C1、C2、C3Actively to load discharge electricity, electricity number realized by controlling feed speed and the machining voltage of negative electrode, from
And improve pulse energy.
Because storage capacitor is equivalent to passive energy, after the electricity that it is discharged is lost on IPM, corresponding electric current will
Reduce.Therefore, the step-down discharge control circuit of L1, Q4 composition is to during IPM is opened, force storage capacitor to discharge electricity more
Amount, to make up IPM loss, loss number depend on IPM operating current, therefore Q4 be according to size of current come control drop
Depth is pressed, so as to control the depth of discharge of storage capacitor.Meanwhile the boosting charging control circuit of L1, Q3 composition is in order in IPM
During shut-off, prime direct current to storage capacitor charge when, control charge rate, stabilized supply voltage, it is ensured that charging process is steady.
Referring to Fig. 2, packing and the control process being superimposed：By the sub-frequency square-wave pulse signal of PWM all the way to dominant frequency arteries and veins
The control signal of punching carries out break-make processing, as quantitative output pulse sequence, pulse bag.Superposition is that single channel IPM modules are produced
A pulse bag be added in order, that is, only produce a pulse bag per road, order turns on successively, and (N is by T=Nt
IPM way in parallel, t are the sub-frequency cycle) loop cycle carry out, Fig. 2 be one embodiment three tunnels superposition a cycle
Simulation process, while be also the performance characteristic of power supply output waveform.
Q3 and Q4 control process is by two-way PWM, produces boosting during IPM is turned off and opened respectively and is depressured to control
The charging and discharging of storage capacitor processed, system determine Q3 and Q4 work according to the current working condition of known variables and main frame
Frequency and dutycycle, to meet current pulse energy.
In precision ECM machining, high energy pulse power control circuit energy precise synchronization provided by the utility model is expired
Sufficient effective current and average current need, the relation between energy accurate match negative electrode feed speed and average current, processing gap,
Preferably electrochemical kinetics requirement is met, it is achieved thereby that the finishing of different materials, different parameters, perfection solve this
The unstability of technique, almost completely eliminate the influence of human factor.The pulse power source control circuit is in strict conformity with square wave arteries and veins
Calculating rule is rushed, with reference to other electric machining rules, Expansion development can be carried out by the principle completely, meet answering for other fields
With.
Specific embodiment of the present utility model described above, the restriction to scope of protection of the utility model is not formed.
Any various other corresponding changes and deformation made according to technical concept of the present utility model, should be included in this practicality
In new scope of the claims.
Claims (6)
- A kind of 1. high energy pulse power control circuit, it is characterised in that including prime dc source DC, the prime dc source DC is in parallel with the first storage capacitor C1, and the first storage capacitor C1 is in parallel with the second storage capacitor C2, the 3rd storage capacitor C3, described Prime dc source DC, the first storage capacitor C1, the second storage capacitor C2 and the 3rd storage capacitor C3 one end and power switch Q Connection, power switch Q are also connected with loading R2 one end, and the other end for loading R2 is connected with prime dc source DC, and described the The two storage capacitor C2 other end is connected with inductance L1, and inductance L1 is connected with first switch pipe Q3 colelctor electrode and forms charging control Circuit processed, inductance L1 are connected with second switch pipe Q4 emitter stage and form charge/discharge control circuit, the first switch pipe Q3's The drive circuit of base stage and second switch pipe Q4 base stage respectively with periphery is connected, and the colelctor electrode of the second switch pipe Q4 is with continuing Diode D1 connections are flowed, one end of sustained diode 1 is connected with the second storage capacitor C2 and the 3rd storage capacitor C3, the other end It is connected with power switch Q, the emitter stage of the first switch pipe Q3 is connected with prime dc source DC and power switch Q.
- A kind of 2. high energy pulse power control circuit according to claim 1, it is characterised in that the first switch pipe Q3 Base stage and second switch pipe Q4 base stage be connected respectively with the first drive circuit, the power switch Q and the second drive circuit Connection, first drive circuit and the second drive circuit respectively by the first PWM circuit and the second PWM circuit with Governor circuit connects.
- A kind of 3. high energy pulse power control circuit according to claim 1, it is characterised in that the power switch Q by Multiple identical IPM wired in parallel are formed, and the storage capacitor C3 of identical the 3rd is connected with the both positive and negative polarity of each IPM module.
- A kind of 4. high energy pulse power control circuit according to claim 1, it is characterised in that the prime dc source DC is composed in parallel by the inverter of multiple equal-wattages.
- A kind of 5. high energy pulse power control circuit according to claim 1, it is characterised in that first storage capacitor C1, the second storage capacitor C2 and the 3rd storage capacitor C3 are each that multiple identical electric capacity are formed in parallel, its capacitance values Size is determined by the size of the underlying amplitude electric current of circuit configuration, while should meet C2 ＞ C1 ＞ C3, and three with load It is related to run power.
- A kind of 6. high energy pulse power control circuit according to claim 1, it is characterised in that the prime dc source DC negative pole is connected with power switch Q, and positive pole is directly connected with the load R2.
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| CN201720770924.9U CN207083026U (en) | 2017-06-29 | 2017-06-29 | A kind of high energy pulse power control circuit |
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| CN201720770924.9U CN207083026U (en) | 2017-06-29 | 2017-06-29 | A kind of high energy pulse power control circuit |
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| CN207083026U true CN207083026U (en) | 2018-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086810A (en) * | 2017-06-29 | 2017-08-22 | 张玉炜 | A kind of high energy pulse power control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086810A (en) * | 2017-06-29 | 2017-08-22 | 张玉炜 | A kind of high energy pulse power control circuit |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190828 Address after: 561113 No. 8, 12 New Art Machinery Factory, Machang Town, Pingba County, Anshun City, Guizhou Province Co-patentee after: Wang Sheng Patentee after: Zhang Yuwei Address before: 561113 No. 8, 12 New Art Machinery Factory, Machang Town, Pingba County, Anshun City, Guizhou Province Co-patentee before: Li Wenbin Patentee before: Zhang Yuwei |
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| TR01 | Transfer of patent right |