CN207573255U - A kind of switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers - Google Patents
A kind of switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers Download PDFInfo
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- CN207573255U CN207573255U CN201721763665.3U CN201721763665U CN207573255U CN 207573255 U CN207573255 U CN 207573255U CN 201721763665 U CN201721763665 U CN 201721763665U CN 207573255 U CN207573255 U CN 207573255U
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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
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- 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 switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers, including：Sequentially connected 18 pulse wave rectifier unit, inversion unit, voltage transformation unit, high-voltage rectifying unit and the control unit being connect with inversion unit；18 pulse wave rectifier units pass through three three-phase bridge rectification circuit rectifications, 18 pulse wave direct current of Parallel opertation；Inversion unit is connect by dc bus with the DC output end of 18 pulse wave rectifier units；Voltage transformation unit, for carrying out transformation to the first exchange output and generating preset second exchange to export；High-voltage rectifying unit, for carrying out rectification to the second exchange output and generating high voltage direct current output；Control unit, for passing through switching device drive signal control inversion unit and monitoring power supply operating status in real time.The power supply can not only effectively reduce mains by harmonics content, moreover it is possible to hoisting power factor, and have many advantages, such as that easy to implement, at low cost, reliability is high, long lifespan.
Description
Technical field
Technical field more particularly to one kind the utility model is related to switching mode microwave high pressure power supply are based on 18 pulse waves certainly
The switching mode microwave high pressure power supply of coupling Transformer Rectifier.
Background technology
At present, the rectification unit of switching mode microwave high pressure power supply (as shown in Figure 1, be between three-phase input and inversion unit
Rectification unit) generally use three phase full bridge rectification unit, i.e., rectification is realized by three-phase full-bridge controlled rectifier.
But exist in the prior art for the rectification scheme of the three-phase bridge rectifier circuit of switching mode microwave high pressure power supply
The problems such as harmonic pollution is serious, power factor is relatively low does not meet the harmonic wave regulation requirement of national grid.What low power factor was brought
It is the increase of energy loss, so as to cause the increase in demand of power supply capacity, and thus itself capacity of device can also increase, so as to
Increase cost.Higher harmonics can allow interference problem to become to be particularly acute, and not only influence power supply homeostasis reliability service or even influence
Other electrical equipment normal works, it is desirable to which handling these problems well just needs to do harmonic wave control and power factor compensation, exists into
The series of problems such as this height, technical difficulty are big and reliability is low.
Utility model content
One of the purpose of this utility model at least that, for how to overcome the above-mentioned problems of the prior art, provide
A kind of switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers, can not only effectively reduce mains by harmonics content,
Can also hoisting power factor, and have many advantages, such as that easy to implement, at low cost, reliability is high, long lifespan.
To achieve these goals, the technical solution adopted in the utility model includes following aspects.
A kind of switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers, including：Sequentially connected ten
Eight pulse wave rectifier units, inversion unit, voltage transformation unit, high-voltage rectifying unit and the control unit being connect with inversion unit；
Wherein, the input terminal of the 18 pulse wave rectifier unit and three-phase alternating current connects, for three-phase alternating current to be led to
After crossing auto-transformer phase shift, pass through three three-phase bridge rectification circuit rectifications, 18 pulse wave direct current of Parallel opertation；Inversion list
Member is connect by dc bus with the DC output end of 18 pulse wave rectifier units, for 18 pulse wave rectifier units to be exported
DC inversion into first exchange electricity output；Voltage transformation unit, for carrying out transformation to the first exchange output and generating preset the
Two exchange outputs；High-voltage rectifying unit, for carrying out rectification to the second exchange output and generating high voltage direct current output；Control is single
Member, for passing through switching device drive signal control inversion unit.
Preferably, the 18 pulse wave rectifier unit includes auto-transformer and three three-phase bridge rectification circuits；
Wherein, the input terminal of auto-transformer is connect respectively with three input terminals of three-phase alternating current；First three-phase is complete
Three input terminals of bridge rectification circuit are connect respectively with three input terminals of three-phase alternating current；Second three-phase bridge rectification circuit
Three input terminals connect respectively with first group of output terminal of auto-transformer；Three of third three-phase bridge rectification circuit are defeated
Enter end to connect with second group of output terminal of auto-transformer respectively；The output terminal of three three-phase bridge rectification circuits is parallel to 18
The DC output end of pulse wave rectifier unit.
Preferably, the auto-transformer uses the doubleway output auto-transformer of advanced 20 ° and 20 ° of lag；Self coupling becomes
The rectified rear formation 12 pulsating wave of two-way output of depressor, and the six of the direct rectification output of upper first three-phase bridge rectification circuit
Pulse wave forms 18 pulse wave dc bus of 20 ° of mutual deviation.
Preferably, the inversion unit includes one or more controllable semiconductor switch devices, for 18 pulse waves are whole
The direct current output inversion of stream unit is exchanges and is delivered to voltage transformation unit.
Preferably, the voltage transformation unit includes one or more intermediate frequencies or high frequency transformer, for will be received from inversion list
The voltage magnitude of first exchange output of member becomes the second exchange output of default amplitude, and is delivered to high-voltage rectifying unit.
Preferably, the high-voltage rectifying unit includes the rectification circuit being made of one or more semiconductor rectifier devices,
For carrying out rectification to the second exchange output of voltage transformation unit and providing direct current output to load.
Preferably, the controllable semiconductor switch device, which has, includes insulated gate bipolar transistor IGBT, metal-oxide
The controllable devices of object semiconductor field effect transistor MOSFET or thyristor.
Preferably, the switching mode microwave high pressure power supply is provided with filter unit before inversion unit, for 18
The output of pulse wave rectifier unit is filtered, and reduces its output ripple；And/or high press filtration is provided with after high-voltage rectifying unit
Wave unit for being filtered to the output of high-voltage rectifying unit, reduces its output ripple, and the low high straightening of ripple is provided to load
Stream output.
Preferably, the filter unit or hv filtering unit include inductor filter circuit, capacitor filter or
Inductance capacitance combined filter circuit.
Preferably, the semiconductor rectifier device, which has, includes the controllable devices of IGBT, MOSFET or thyristor, and from
Control unit, which obtains, provides drive signal.
In conclusion by adopting the above-described technical solution, the utility model at least has the advantages that：
The 18 pulse wave rectifier units formed by auto-transformer and rectifier bridge, effectively overcome three-phase bridge rectification
Harmonic wave is big, the problem of power factor is low and interference signal is strong, so as to improve the reliability of product and reduce to power grid
Pollution；The ripple smaller of 18 pulse wave rectifiers conducive to system closed-loop control, can also reduce the capacity and filter inductance of filter capacitor
Sensibility reciprocal, numerous reduction harmonic waves, hoisting power factor and lifting system reliability schemes in, there is the excellent of most cost performance
Gesture, and have the advantages that technical difficulty is low, reliability is high, at low cost, long lifespan.
Description of the drawings
Fig. 1 is the structure diagram of the existing switching mode microwave high pressure power supply based on three phase full bridge rectification unit.
Fig. 2 is the electricity of the switching mode microwave high pressure based on 18 pulse wave self coupling Transformer Rectifiers according to the utility model embodiment
The structure diagram in source.
Fig. 3 is the structure diagram according to the 18 pulse wave rectifier units of the utility model embodiment.
Fig. 4 is the electricity of the switching mode microwave high pressure based on 18 pulse wave self coupling Transformer Rectifiers according to the utility model embodiment
The structure diagram in source, high-voltage rectifying unit use controllable devices.
Fig. 5 is the electricity of the switching mode microwave high pressure based on 18 pulse wave self coupling Transformer Rectifiers according to the utility model embodiment
The structure diagram in source, inversion unit are provided with filter unit before.
Fig. 6 is the electricity of the switching mode microwave high pressure based on 18 pulse wave self coupling Transformer Rectifiers according to the utility model embodiment
The structure diagram in source, high-voltage rectifying unit are provided with hv filtering unit later.
Fig. 7 is the electricity of the switching mode microwave high pressure based on 18 pulse wave self coupling Transformer Rectifiers according to the utility model embodiment
The structure diagram in source, inversion unit are provided with hv filtering list after being provided with filter unit and high-voltage rectifying unit before
Member.
Specific embodiment
With reference to the accompanying drawings and embodiments, the present invention is further described in detail, so that the utility model
Object, technical solution and advantage are more clearly understood.It should be appreciated that specific embodiment described herein is only explaining this reality
With novel, it is not used to limit the utility model.
Fig. 2 shows the switching mode microwave based on 18 pulse wave self coupling Transformer Rectifiers according to the utility model embodiment is high
Voltage source, including：Sequentially connected 18 pulse wave rectifier unit, inversion unit, voltage transformation unit, high-voltage rectifying unit and
The control unit being connect with inversion unit.
Wherein, the input terminal of the 18 pulse wave rectifier unit and three-phase alternating current connects, for three-phase alternating current to be led to
After crossing auto-transformer phase shift, pass through three three-phase bridge rectification circuit rectifications, 18 pulse wave direct current of Parallel opertation；Inversion list
Member is connect by dc bus with the DC output end of 18 pulse wave rectifier units, for 18 pulse wave rectifier units to be exported
DC inversion into first exchange electricity output；Voltage transformation unit, for carrying out transformation to the first exchange output and generating preset the
Two exchange outputs；High-voltage rectifying unit, for carrying out rectification to the second exchange output and generating high voltage direct current output (for example, can
For providing high-voltage DC power supply for magnetron)；Control unit, for passing through switching device drive signal control inversion unit
And power supply operating status is monitored in real time.
Fig. 3 shows the 18 pulse wave rectifier units according to the utility model embodiment.The 18 pulse wave rectifier unit packet
Include auto-transformer and three three-phase bridge rectification circuits.
Wherein, input terminal A, B, C of auto-transformer are connect respectively with three input terminals of three-phase alternating current (3AC)；The
Three input terminals of one three-phase bridge rectification circuit are connect respectively with three input terminals of three-phase alternating current；Second three-phase is complete
Three input terminals of bridge rectification circuit are connect respectively with first group of output terminal a1, b1, c1 of auto-transformer；Third three-phase is complete
Three input terminals of bridge rectification circuit are connect respectively with second group of output terminal a2, b2, c2 of auto-transformer；Three three phase full bridges
The output terminal of rectification circuit is parallel to the DC output end of 18 pulse wave rectifier units.
In a preferred embodiment, auto-transformer in 18 pulse wave rectifier units is using advanced 20 ° and 20 ° of lag
Doubleway output auto-transformer；The rectified rear formation 12 pulsating wave of two-way output of auto-transformer, and upper first three-phase is complete
Six pulse waves of the direct rectification output of bridge rectification circuit, form 18 pulse wave dc bus of 20 ° of mutual deviation, and circuit topology refers to Fig. 2.
This scheme transformer Optimum cost, volume are minimum, and effectively by harmonics restraint to 1/3rd or so of six pulse waves.
Inversion unit can include one or more controllable semiconductor switch devices, for what will be received by dc bus
Direct current input inversion is exchanges and is delivered to voltage transformation unit.Wherein, controllable semiconductor switch device may include insulated gate bipolar
The controllable devices such as transistor IGBT, Metal-Oxide Semiconductor field effect transistor M OSFET or thyristor.
Control unit may be used with control circuit electronic circuit board, for providing switching device driving for inversion unit
Signal, and the parameters such as dc bus and output signal are detected, to form closed-loop control.
Voltage transformation unit can include one or more medium, high frequency transformers, for first received from inversion unit to be handed over
The voltage magnitude of stream output becomes the second exchange output of default amplitude, and is delivered to high-voltage rectifying unit.
High-voltage rectifying unit can include the rectification circuit being made of one or more semiconductor rectifier devices, for becoming
The second exchange output of unit is pressed to carry out rectification and provides high voltage direct current output to load.The semiconductor rectifier device can be not
Controllable devices (for example, diode), or controllable devices (for example, IGBT, MOSFET, thyristor etc.).As shown in figure 4,
When forming controllable high-voltage rectification unit using controllable devices, derailing switch is provided to controllable high-voltage rectification unit by control unit
Part drive signal.
As shown in figure 5, the switching mode based on 18 pulse wave self coupling Transformer Rectifiers according to the preferred embodiment in the utility model
Microwave high pressure power supply is provided with filter unit before its inversion unit, for being filtered to the output of 18 pulse wave rectifier units
Wave reduces its output ripple, and providing low ripple high voltage direct current to load exports.Alternatively, as shown in fig. 6, according to the utility model
The switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers of preferred embodiment is after its high-voltage rectifying unit
Hv filtering unit is provided with, for being filtered to the output of high-voltage rectifying unit, reduces its output ripple.Alternatively, such as Fig. 7
Shown, being provided with before its inversion unit after filter unit and high-voltage rectifying unit for switching mode microwave high pressure power supply is set
There is hv filtering unit, be filtered with the output respectively to 18 pulse wave rectifier units and the output of high-voltage rectifying unit, dropped
Its low output ripple.Wherein, filter unit or hv filtering unit can include inductor filter circuit, capacitor filter or
The filter circuit of person's inductance capacitance combination.
Above-mentioned technical proposal forms 18 pulse wave direct currents by 18 pulse wave rectifier units, effectively overcomes six pulse waves
The problem of rectification harmonic wave is big, power factor is low, interference is strong, so as to improve the reliability of system, and reduces interference signal
Intensity and the pollution to power grid；The ripple smaller of 18 pulse wave rectifiers can reduce the quantity of filter capacitor and the sense of filter inductance
Amount in the scheme of numerous reduction harmonic waves, hoisting power factor and lifting system reliability, has the advantage of most cost performance,
And have the advantages that technical difficulty is low, reliability is high, at low cost, long lifespan.
In a still further embodiment, control unit can monitor the operating status of power supply and other related letters in real time
Number, and according to the corresponding action of the change of its state and parameter and safeguard measure, it is ensured that system is safe and stable, reliable
In the case of use and run, fully demonstrate the intelligence of microwave high pressure power control system.
The detailed description of the above, only specific embodiment of the present invention rather than the limitation to the utility model.
Those skilled in the technology concerned in the case of the principle and range for not departing from the utility model, the various replacements made,
Modification and improvement should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers, which is characterized in that including：Connect successively
18 pulse wave rectifier units, inversion unit, voltage transformation unit, high-voltage rectifying unit and the control being connect with inversion unit connect
Unit；
Wherein, the input terminal of the 18 pulse wave rectifier unit and three-phase alternating current connects, for three-phase alternating current to be passed through certainly
After coupling transformer phase shift, pass through three three-phase bridge rectification circuit rectifications, 18 pulse wave direct current of Parallel opertation；Inversion unit leads to
The DC output end that dc bus is crossed with 18 pulse wave rectifier units is connect, for the direct current for exporting 18 pulse wave rectifier units
It is reverse into the first exchange electricity output；Voltage transformation unit, for carrying out transformation to the first exchange output and generating preset second exchange
Output；High-voltage rectifying unit, for carrying out rectification to the second exchange output and generating high voltage direct current output；Control unit is used for
Inversion unit is controlled by switching device drive signal.
2. switching mode microwave high pressure power supply according to claim 1, which is characterized in that the 18 pulse wave rectifier unit packet
Include auto-transformer and three three-phase bridge rectification circuits；
Wherein, the input terminal of auto-transformer is connect respectively with three input terminals of three-phase alternating current；First three phase full bridge is whole
Three input terminals of current circuit are connect respectively with three input terminals of three-phase alternating current；The three of second three-phase bridge rectification circuit
A input terminal is connect respectively with first group of output terminal of auto-transformer；Three input terminals of third three-phase bridge rectification circuit
It is connect respectively with second group of output terminal of auto-transformer；The output terminal of three three-phase bridge rectification circuits is parallel to 18 pulse waves
The DC output end of rectification unit.
3. switching mode microwave high pressure power supply according to claim 2, which is characterized in that the auto-transformer is using advanced
20 ° and the doubleway output auto-transformer of 20 ° of lag；The rectified rear formation 12 pulsating wave of two-way output of auto-transformer, and
Six pulse waves of the upper direct rectification output of first three-phase bridge rectification circuit form 18 pulse wave dc bus of 20 ° of mutual deviation.
4. switching mode microwave high pressure power supply according to claim 1, which is characterized in that the inversion unit include one or
Multiple controllable semiconductor switch devices, for for exchange and the direct current output inversion of 18 pulse wave rectifier units to be delivered to transformation
Unit.
5. switching mode microwave high pressure power supply according to claim 1, which is characterized in that the voltage transformation unit include one or
Multiple intermediate frequencies or high frequency transformer, for the voltage magnitude of the first exchange output received from inversion unit to be become default amplitude
The second exchange output, and be delivered to high-voltage rectifying unit.
6. switching mode microwave high pressure power supply according to claim 1, which is characterized in that the high-voltage rectifying unit include by
The rectification circuit of one or more semiconductor rectifier device compositions, for carrying out rectification simultaneously to the second exchange output of voltage transformation unit
Direct current output is provided to load.
7. switching mode microwave high pressure power supply according to claim 4, which is characterized in that the controllable semiconductor switch device
With including insulated gate bipolar transistor IGBT, Metal-Oxide Semiconductor field effect transistor M OSFET or thyristor
Controllable devices.
8. switching mode microwave high pressure power supply according to claim 1, which is characterized in that the switching mode microwave high pressure power supply
Filter unit is provided with before inversion unit, for being filtered to the output of 18 pulse wave rectifier units, reduces its output
Ripple；And/or hv filtering unit is provided with after high-voltage rectifying unit, for being filtered to the output of high-voltage rectifying unit
Wave reduces its output ripple, and providing low ripple high voltage direct current to load exports.
9. switching mode microwave high pressure power supply according to claim 8, which is characterized in that the filter unit or high press filtration
Wave unit includes inductor filter circuit, capacitor filter or inductance capacitance combined filter circuit.
10. switching mode microwave high pressure power supply according to claim 6, which is characterized in that the semiconductor rectifier device tool
There are the controllable devices including IGBT, MOSFET or thyristor, and obtained from control unit and drive signal is provided.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721763665.3U CN207573255U (en) | 2017-12-15 | 2017-12-15 | A kind of switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721763665.3U CN207573255U (en) | 2017-12-15 | 2017-12-15 | A kind of switching mode microwave high pressure power supply based on 18 pulse wave self coupling Transformer Rectifiers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901034A (en) * | 2019-04-02 | 2019-06-18 | 国网陕西省电力公司电力科学研究院 | Power cable local discharge detection device and appraisal procedure based on multi-stag power supply and series resonance |
-
2017
- 2017-12-15 CN CN201721763665.3U patent/CN207573255U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901034A (en) * | 2019-04-02 | 2019-06-18 | 国网陕西省电力公司电力科学研究院 | Power cable local discharge detection device and appraisal procedure based on multi-stag power supply and series resonance |
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Address after: 618000, No.19 Tumenjiang Road, Deyang City, Sichuan Province Patentee after: Sichuan Yingjie New Energy Co.,Ltd. Address before: Buildings 1 and 2, No. 295 Cuihu Road, Deyang City, Sichuan Province, 618000 Patentee before: SICHUAN WEIYU ELECTRIC Co.,Ltd. |
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