CN209200954U - A kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation - Google Patents
A kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation Download PDFInfo
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- CN209200954U CN209200954U CN201822113442.3U CN201822113442U CN209200954U CN 209200954 U CN209200954 U CN 209200954U CN 201822113442 U CN201822113442 U CN 201822113442U CN 209200954 U CN209200954 U CN 209200954U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a kind of high-frequency and high-voltage power supplies based on half-bridge copped wave amplitude modulation, comprising: has alternating current-direct current shifting conversion unit, DC bus-bar voltage AM unit, high-frequency inversion unit, resonant frequencies rectifier transformer unit, power output unit and the controller of Active PFC；Alternating current-direct current shifting conversion unit input terminal connects alternating current, output end connects DC bus-bar voltage AM unit, the DC bus-bar voltage AM unit other end is connect with high-frequency inversion unit, high-frequency inversion unit output end is connect with resonant frequencies rectifier transformer unit, the resonant frequencies rectifier transformer unit other end is connect with power output unit, and controller is connect with alternating current-direct current shifting conversion unit, DC bus-bar voltage AM unit, high-frequency inversion unit and resonant frequencies rectifier transformer unit respectively.The utility model makes power-supply system adapt to various operating conditions, with stable power factor, guarantees its stabilization, reliability service.
Description
Technical field
The utility model relates to high-frequency high-voltage source domain more particularly to a kind of high-frequency and high-voltages based on half-bridge copped wave amplitude modulation
Power supply.
Background technique
Currently, ESP high-frequency high-voltage source circuit mainly has: frequency modulation high frequency electric source, SCR amplitude modulation high frequency electric source, list IGBT
Amplitude modulation high frequency electric source.Frequency modulation high frequency electric source adaptability for working condition is poor, is gradually replaced by amplitude modulation high frequency electric source；SCR amplitude modulation high-frequency electrical
Source problem is, when load voltage is in lower range, net side THD (percent harmonic distortion) increases, and power factor becomes very low；It is single
The problem of IGBT amplitude modulation high frequency electric source, is as follows:
1) at entire output voltage range (30~80kV), power input power factor still decreases；
2) list IGBT copped wave amplitude modulation, in IGBT shutdown, the inductive current connected below is mutated and generates high pressure, causes
IGBT punch through damage, power-supply system cannot stablize, reliability service.
Utility model content
The utility model provides a kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation, to overcome above-mentioned technical problem.
High-frequency and high-voltage power supply of the utility model based on half-bridge copped wave amplitude modulation, comprising:
The alternating current-direct current shifting conversion unit, DC bus-bar voltage AM unit, high-frequency inversion list for having Active PFC
Member, resonant frequencies rectifier transformer and controller；
The alternating current-direct current shifting conversion unit input terminal connects alternating current, and output end connects the DC bus-bar voltage amplitude modulation list
Member, the DC bus-bar voltage AM unit other end are connect with the high-frequency inversion unit, the high-frequency inversion unit output
End is connect with the resonant frequencies rectifier transformer unit, the resonant frequencies rectifier transformer unit other end and the power supply
Output unit connection, the controller respectively with the alternating current-direct current shifting conversion unit, the DC bus-bar voltage AM unit,
The high-frequency inversion unit and resonant frequencies rectifier transformer unit connection；
The alternating current-direct current shifting conversion unit for having Active PFC, comprising:
Three-phase input primary air switch, rectification pre-charge circuit, main contactor, three-phase rectification bridge, PFC electricity
Road；
The three-phase input primary air switchs one end connection alternating current, the other end connection rectification pre-charge circuit and master in parallel
The input terminal of contactor, rectification pre-charge circuit in parallel and main contactor output end are connect with the three-phase rectification bridge, described
Three-phase rectification bridge output end is connect with the circuit of power factor correction.
Further, the DC bus-bar voltage AM unit, comprising:
DC bus pre-charge circuit, half-bridge chopper circuit, half-bridge copped wave IGBT absorbing circuit and half-bridge copped wave electricity
The first driving circuit DR1 on road, the half-bridge chopper circuit include: the first half-bridge IGBT and the second half-bridge IGBTV0, copped wave electricity
Feel LX2, filter capacitor CX1；
The input terminal of the DC bus pre-charge circuit respectively with connect circuit of power factor correction output end, first
The collector of half-bridge IGBT connects, and the collector of the first half-bridge IGBT is also connect with one end of the absorbing circuit, described
The output end of DC bus pre-charge circuit is connect with the emitter of the first half-bridge IGBT, the second half-bridge IGBT's
Emitter is also connect with the collector of the other end of the absorbing circuit, the first IGBT, the copped wave inductance and the filtered electrical
Hold in parallel with the collector and emitter of the second half-bridge IGBT after connecting, the first half-bridge IGBT and second half-bridge
The grid of IGBT is connect with first driving circuit.
Further, the high-frequency inverter circuit includes:
3rd IGBT, the 4th IGBT, the 5th IGBT, the 6th IGBT, the second driving circuit DR2 and third driving circuit
DR3；
The emitter of 3rd IGBT connect with the collector of the 4th IGBT after with resonant frequencies rectifier transformer
Unit connection, the emitter of the 5th IGBT, which rectifies after connecting with the collector of the 6th IGBT with the resonant frequencies, to be become
The connection of depressor unit, the collector of the 3rd IGBT are connect with the collector of the 5th IGBT, the emitter of the 4th IGBT
It is connect with the emitter of the 6th IGBT.
Further, the resonant frequencies rectifier transformer, comprising:
Capacitor CXB, high-frequency step-up transformer, high-frequency rectification bridge, output divider resistance R6, divider resistance R7, output electric current
Resistance R5 and damping resistance RZ；
One end of the capacitor CXB is connect with high-frequency inverter circuit, and the other end and the high-frequency step-up transformer primary side connect
It connects, the high-frequency step-up transformer primary side other end is connect with the high-frequency inverter circuit, the pair of the high-frequency step-up transformer
Side is connect with the high-frequency rectification bridge input terminal, the output end of the high-frequency rectification bridge and the divider resistance R6, divider resistance
R7, output current resistor R5 connection, the divider resistance R6 are also connect with the one end damping resistance RZ, and the damping resistance RZ's is another
One end connection load.
Further, further includes:
The remote controllers of the touch screen and regulation parameter of input and display control parameter, the touch screen, long-range control
Device is connect with the master controller.
The utility model has the alternating current-direct current shifting conversion unit and DC bus AM unit of Active PFC, makes electricity
Source system adapts to various operating conditions, with stable power factor, guarantees its stabilization, reliability service.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is high-frequency and high-voltage power supply structure principle chart of the utility model based on half-bridge copped wave amplitude modulation；
Fig. 2 is the circuit diagram of the utility model alternating current-direct current shifting conversion unit and DC bus-bar voltage AM unit；
Fig. 3 is the utility model high-frequency inverter circuit and resonant frequencies rectifier transformer circuit diagram.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Fig. 1 is high-frequency and high-voltage power supply structure principle chart of the utility model based on half-bridge copped wave amplitude modulation, as shown in Figure 1, this
The high-frequency and high-voltage power supply of embodiment, comprising:
Alternating current-direct current shifting conversion unit 101, the DC bus-bar voltage AM unit 102, high frequency for having Active PFC
Inversion unit 103, resonant frequencies rectifier transformer 104 and controller 105；
The alternating current-direct current shifting conversion unit input terminal connects alternating current, and output end connects the DC bus-bar voltage amplitude modulation list
Member, the DC bus-bar voltage AM unit other end are connect with the high-frequency inversion unit, the high-frequency inversion unit output
End is connect with the resonant frequencies rectifier transformer unit, the resonant frequencies rectifier transformer unit other end and the power supply
Output unit connection, the controller respectively with the alternating current-direct current shifting conversion unit, the DC bus-bar voltage AM unit,
The high-frequency inversion unit and resonant frequencies rectifier transformer unit connection；
The alternating current-direct current shifting conversion unit for having Active PFC, comprising:
Three-phase input primary air switch, rectification pre-charge circuit, main contactor, three-phase rectification bridge, PFC electricity
Road；
The three-phase input primary air switchs one end connection alternating current, the other end connection rectification pre-charge circuit and master in parallel
The input terminal of contactor, rectification pre-charge circuit in parallel and main contactor output end are connect with the three-phase rectification bridge, described
Three-phase rectification bridge output end is connect with the circuit of power factor correction.
Specifically, the rectification pre-charge circuit of the present embodiment, comprising: rectification precharge switch and resistance.It can be to avoid
Destruction of the filter capacitor dash current to three-phase rectification bridge, filter capacitor when starting guarantees stabilization member, reliability service.
DC side circuit of power factor correction, comprising: inductance and capacitor.Using this circuit, in entire output voltage range
(30~80kV), power input power factor are greater than 0.9, reduce the harmonic wave of power input power grid；Using DC side power factor
Correcting circuit compares AC side Power Factor correcting circuit, has and preferably inhibits harmonic wave effects.Using PFC electricity
Road, at entire output voltage range (30~80kV), power input power factor is greater than 0.9, reduces the humorous of power input power grid
Wave；And common frequency modulation high frequency electric source and SCR (silicon-controlled) amplitude modulation type high frequency electric source, as output voltage reduces, power input function
Rate factor gradually reduces, and special SCR (silicon-controlled) amplitude modulation type high frequency electric source power input power factor is substantially reduced.
The present embodiment master controller, comprising: analog input and its pretreatment circuit, On-off signal, output circuit,
Soft and hardware combination ESP electric field flashover differentiates that circuit, Communication processing circuit and DSP (number letter occur for circuit, IGBT driving pulse
Number processor) composition such as core circuit.Execute following function: high frequency electric source operates normally control, the processing of ESP electric field flashover, electricity
Source troubleshooting and on the spot, telecommunication control function etc..
Further, the DC bus-bar voltage AM unit, comprising:
DC bus pre-charge circuit, half-bridge chopper circuit, half-bridge copped wave IGBT absorbing circuit and half-bridge copped wave electricity
The first driving circuit DR1 on road, the half-bridge chopper circuit include: the first half-bridge IGBT and the second half-bridge IGBTV0, copped wave electricity
Feel LX2, filter capacitor CX1；
The input terminal of the DC bus pre-charge circuit respectively with connect circuit of power factor correction output end, first
The collector of half-bridge IGBT connects, and the collector of the first half-bridge IGBT is also connect with one end of the absorbing circuit, described
The output end of DC bus pre-charge circuit is connect with the emitter of the first half-bridge IGBT, the second half-bridge IGBT's
Emitter is also connect with the collector of the other end of the absorbing circuit, the first IGBT, the copped wave inductance and the filtered electrical
Hold in parallel with the collector and emitter of the second half-bridge IGBT after connecting, the first half-bridge IGBT and second half-bridge
The grid of IGBT is connect with first driving circuit.
Specifically, as shown in Fig. 2, the present embodiment alternating current-direct current shifting conversion unit and DC bus-bar voltage AM unit,
It include: primary air switch 1, pre-charge circuit 2, main contactor 3, three-phase rectification bridge 4, PFC 5, half-bridge chopper circuit
6, amplitude modulation high frequency electric source controller 12.The adjusting for realizing output voltage, makes high-frequency inversion switching frequency be substantially equal to high-frequency rectification
The rated frequency of transformer makes high-frequency rectification transformer efficient operation, and at entire output voltage range (30~80kV), power supply turns
Efficiency is changed greater than 0.9, compares other high frequency electric source energy conservations 10~20%.The present embodiment DC bus pre-charge circuit can wrap
It includes: precharge switch and resistance.It can also be by having the function of that the circuit of said function realizes this in the prior art.So as to
Destruction of the bus filter capacitor dash current to half-bridge chopper circuit IGBT, bus filter capacitor when avoiding starting, guarantees
Stabilization member, reliability service.The present embodiment half-bridge copped wave IGBT absorbing circuit can select the electricity of said function in the prior art
Road, the destruction so as to avoid voltage glitch when IGBT switch to IGBT, while reducing the switching loss of IGBT.
Further, the high-frequency inverter circuit includes:
3rd IGBT, the 4th IGBT, the 5th IGBT, the 6th IGBT, the second driving circuit DR2 and third driving circuit
DR3；
The emitter of 3rd IGBT connect with the collector of the 4th IGBT after with resonant frequencies rectifier transformer
Unit connection, the emitter of the 5th IGBT, which rectifies after connecting with the collector of the 6th IGBT with the resonant frequencies, to be become
The connection of depressor unit, the collector of the 3rd IGBT are connect with the collector of the 5th IGBT, the emitter of the 4th IGBT
It is connect with the emitter of the 6th IGBT.
Further, the resonant frequencies rectifier transformer, comprising:
Capacitor CXB, high-frequency step-up transformer, high-frequency rectification bridge, output divider resistance R6, divider resistance R7, output electric current
Resistance R5 and damping resistance RZ；
One end of the capacitor CXB is connect with high-frequency inverter circuit, and the other end and the high-frequency step-up transformer primary side connect
It connects, the high-frequency step-up transformer primary side other end is connect with the high-frequency inverter circuit, the pair of the high-frequency step-up transformer
Side is connect with the high-frequency rectification bridge input terminal, the output end of the high-frequency rectification bridge and the divider resistance R6, divider resistance
R7, output current resistor R5 connection, the divider resistance R6 are also connect with the one end damping resistance RZ, and the damping resistance RZ's is another
One end connection load.
Specifically, as shown in figure 3, the present embodiment high-frequency inverter circuit and resonant frequencies rectifier transformer, comprising: high
Frequency inverter circuit 7, high frequency transformer 8, damping resistance 9, ESP 10, IGBT driving board 11, amplitude modulation high frequency electric source controller 12.
The capacitor CXB and high frequency of above-mentioned high-frequency inverter circuit 7 and the resonant frequencies rectifier transformer 8 of the present embodiment boost
Transformer device constitutes LC resonance soft switch circuit.The resonance soft switch circuit is to utilize the resonance electricity for being placed in oil tank of transformer
The leakage inductance of appearance, ESP10 load capacitance and high-frequency step-up transformer forms series resonant circuit, so that high-frequency inversion IGBT is in soft and opens
Off status, it is possible to reduce the switching loss of IGBT improves power conversion efficiency.
High-frequency step-up transformer is designed to the larger leakage inductance with 10~15uH, on the one hand can replace resonant inductance, separately
On the one hand resonance current and flashover current be can reduce.
Damage of the dash current to power-supply device when damping resistance can limit ESP electric field flashover；
Load ESP is equivalent to capacitor and variable resistance between yin, yang (voltage is divided by corona current between yin, yang).
Common frequency modulation high frequency electric source, as output voltage reduces, switching frequency is reduced, high-frequency rectification transformer station high-voltage side bus frequency
It reduces, peak point current increases, and high-frequency rectification transformer efficiency reduces, and power supply conversion efficiency is caused to reduce.Using high-frequency inversion electricity
Road is simultaneously connected to high-frequency rectification transformer, can reduce high-frequency rectification volume of transformer, weight, and reduce high-frequency rectification transformer
Loss improves power conversion efficiency.
Further, further includes:
The remote controllers of the touch screen and regulation parameter of input and display control parameter, the touch screen, long-range control
Device is connect with the master controller.
The adjusting of DC bus-bar voltage not only may be implemented in the utility model, and then realizes rectification high frequency transformer specified
The adjusting of output voltage when frequency efficient operation solves the problems, such as fixed busbar voltage frequent flashover in low current output；
And the two-way flow of DC bus current may be implemented, the feedback of bus filter capacitor energy, keeps away when realizing low-power output
Exempt from bus overvoltage.
When ESP is operated normally, DC bus-bar voltage is only adjusted, the adjusting of output average voltage can be realized, exporting
Electric current is small and the frequent flashover occasion of frequency modulation high frequency electric source (such as sintering plant sintering machine head end), high-frequency rectification transformer output voltage peak value
It is corresponding to reduce, the chance of occurrence of ESP electric field flashover is reduced, makes power supply and ESP stable operation, helps to improve the dedusting of ESP
Efficiency；
When flashover occurs for ESP electric field, by only slightly reducing DC bus-bar voltage, and inverse switch frequency is greatly reduced
Rate quickly reduces output voltage function when realizing flashover, then quickly improves inverse switch frequency, realizes rapid pressure after flashover
Function.
By jointly controlling for DC bus amplitude modulation and gap power supply mode, ESP can be made preferably to handle high specific resistance
Dust, and realize significantly energy conservation power supply.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (5)
1. a kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation characterized by comprising
Has the alternating current-direct current shifting conversion unit of Active PFC, DC bus-bar voltage AM unit, high-frequency inversion unit, humorous
Shake high-frequency rectification transformer and controller；
The alternating current-direct current shifting conversion unit input terminal connects alternating current, and output end connects the DC bus-bar voltage AM unit, institute
It states the DC bus-bar voltage AM unit other end to connect with the high-frequency inversion unit, the high-frequency inversion unit output end and institute
The connection of resonant frequencies rectifier transformer unit is stated, the resonant frequencies rectifier transformer unit other end and power supply output are single
Member connection, the controller respectively with the alternating current-direct current shifting conversion unit, the DC bus-bar voltage AM unit, the height
Frequency inversion unit and resonant frequencies rectifier transformer unit connection；
The alternating current-direct current shifting conversion unit for having Active PFC, comprising:
Three-phase input primary air switch, rectification pre-charge circuit, main contactor, three-phase rectification bridge, circuit of power factor correction；
The three-phase input primary air switchs one end connection alternating current, other end connection rectification pre-charge circuit in parallel and main contact
The input terminal of device, rectification pre-charge circuit in parallel and main contactor output end are connect with the three-phase rectification bridge, the three-phase
Rectification bridge output end is connect with the circuit of power factor correction.
2. high-frequency and high-voltage power supply according to claim 1, which is characterized in that the DC bus-bar voltage AM unit, packet
It includes:
DC bus pre-charge circuit, half-bridge chopper circuit, half-bridge copped wave IGBT absorbing circuit and the half-bridge chopper circuit
First driving circuit DR1, the half-bridge chopper circuit include: the first half-bridge IGBT and the second half-bridge IGBTV0, copped wave inductance
LX2, filter capacitor CX1；
The input terminal of the DC bus pre-charge circuit respectively with the output end, the first half-bridge that connect circuit of power factor correction
The collector of IGBT connects, and the collector of the first half-bridge IGBT is also connect with one end of the absorbing circuit, the direct current
The output end of bus precharge circuits is connect with the emitter of the first half-bridge IGBT, the emitter of the second half-bridge IGBT
It is also connect with the collector of the other end of the absorbing circuit, the first IGBT, the copped wave inductance is connected with the filter capacitor
It is in parallel with the collector and emitter of the second half-bridge IGBT afterwards, the first half-bridge IGBT and the second half-bridge IGBT's
Grid is connect with first driving circuit.
3. high-frequency and high-voltage power supply according to claim 1, which is characterized in that the high-frequency inverter circuit includes:
3rd IGBT, the 4th IGBT, the 5th IGBT, the 6th IGBT, the second driving circuit DR2 and third driving circuit DR3；
The emitter of 3rd IGBT connect with the collector of the 4th IGBT after with resonant frequencies rectifier transformer unit
Connection, the emitter of the 5th IGBT connect with the collector of the 6th IGBT after with the resonant frequencies rectifier transformer
Unit connection, the collector of the 3rd IGBT connect with the collector of the 5th IGBT, the emitter of the 4th IGBT and the
The emitter of six IGBT connects.
4. high-frequency and high-voltage power supply according to claim 1, which is characterized in that the resonant frequencies rectifier transformer, comprising:
Capacitor CXB, high-frequency step-up transformer, high-frequency rectification bridge, output divider resistance R6, divider resistance R7, output current resistor
R5 and damping resistance RZ；
One end of the capacitor CXB is connect with high-frequency inverter circuit, and the other end is connect with the high-frequency step-up transformer primary side, institute
It states the high-frequency step-up transformer primary side other end to connect with the high-frequency inverter circuit, the secondary side of the high-frequency step-up transformer and institute
State the connection of high-frequency rectification bridge input terminal, the output end of the high-frequency rectification bridge and the divider resistance R6, divider resistance R7, output
Current resistor R5 connection, the divider resistance R6 are also connect with the one end damping resistance RZ, and the other end of the damping resistance RZ connects
Connect load.
5. high-frequency and high-voltage power supply according to claim 1, which is characterized in that further include:
Input and display control parameter touch screen and regulation parameter remote controllers, the touch screen, remote controllers with
The controller connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822113442.3U CN209200954U (en) | 2018-12-15 | 2018-12-15 | A kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation |
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| CN201822113442.3U CN209200954U (en) | 2018-12-15 | 2018-12-15 | A kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412437A (en) * | 2018-12-15 | 2019-03-01 | 大连蓝乔电子科技有限公司 | A kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412437A (en) * | 2018-12-15 | 2019-03-01 | 大连蓝乔电子科技有限公司 | A kind of high-frequency and high-voltage power supply based on half-bridge copped wave amplitude modulation |
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Effective date of registration: 20200522 Address after: 116000 room 403-5-46, 4th floor, Kechuang building, No. 131, Guangxian Road, Dalian hi tech Industrial Park, Liaoning Province Patentee after: Dalian Jinlida Electronic Technology Co., Ltd Address before: Room 502, 5th floor, Kechuang Building, 131 Guangxian Road, Dalian Hi-tech Industrial Park, Liaoning Province, 116000 Patentee before: DALIAN LAN QIAO ELECTRONIC TECHNOLOGY Co.,Ltd. |