CN110289764A - Power conversion device - Google Patents
Power conversion device Download PDFInfo
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- CN110289764A CN110289764A CN201910456276.3A CN201910456276A CN110289764A CN 110289764 A CN110289764 A CN 110289764A CN 201910456276 A CN201910456276 A CN 201910456276A CN 110289764 A CN110289764 A CN 110289764A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 48
- 238000002955 isolation Methods 0.000 claims abstract description 15
- 230000009466 transformation Effects 0.000 claims abstract description 11
- 230000005284 excitation Effects 0.000 claims abstract description 5
- 239000004065 semiconductor Substances 0.000 claims description 44
- 239000003990 capacitor Substances 0.000 claims description 43
- 238000001514 detection method Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
Abstract
It includes: inversion unit that the present invention, which provides a kind of power conversion device, for the direct current of input to be converted to alternating current and exports alternating current；Rectification unit, the alternating current for exporting inversion unit are converted to direct current；Prime boosting unit, the voltage value of the direct current for adjusting input inversion unit；Resonant element, for carrying out voltage transformation and electrical isolation under the excitation for the alternating voltage that inversion unit exports；It is arranged according to the sequence of prime boosting unit, inversion unit, resonant element and rectification unit, by the setting of prime boosting unit, inversion unit and rectification unit in air intake vent, resonant element is arranged in air outlet, and power conversion device is made to form U-shaped layout.The application can be improved the working frequency and working efficiency of AuCT, effectively reduce volume and weight, improve the stability and safety of power supply system；And structure is simplified, and can be improved integrated level, is convenient for later maintenance and replacement.
Description
Technical field
The present invention relates to rail transportation vehicle-mounted equipment technical fields, and in particular to a kind of power conversion device.
Background technique
AuCT is the important component of rail vehicle power supply system, carries the institute in addition to drawing main circuit
There is the power supply task of ancillary equipment.Ancillary equipment includes: vehicle control system, lighting system, ventilation and air-conditioning system, vehicle storage
Battery etc., in such systems, some provide necessary guarantee for train normal operation, and some provides comfortable seating for passenger
Environment, therefore vehicle has higher requirement to the reliability of the power supply system of ancillary equipment.
The isolation method of AuCT usually has the mode of Industrial Frequency Transformer isolation and intermediate-frequency transformer isolation.Power frequency becomes
Depressor isolation method is that inversion is directly carried out after being filtered to DC input voitage, and the output voltage that inversion obtains is through work
It is exported after frequency power transformer isolation, since Industrial Frequency Transformer working frequency is lower, so that Industrial Frequency Transformer has biggish body
Long-pending and weight；Intermediate-frequency transformer isolation method is to increase level-one before inverter there is the intermediate frequency DC/DC of transformer isolation to convert
Direct current is first inputted step-up/down to aspiration level by device, then through controlled resonant converter complete single-phase inversion, decompression isolation and
Work is rectified, the low-voltage direct after rectification is carried out inversion and output again by rear class three-phase inverter.The work frequency of intermediate-frequency transformer
Transformer working frequency is promoted to phase in such a way that intermediate-frequency transformer is isolated generally in several kHz to tens megahertzs by rate
To higher intermediate frequency section, the volume and weight of ancillary equipment is greatly reduced, it can also be effective by resonant type soft-switch technology
Reduce power loss.
Currently, using the AuCT of intermediate-frequency transformer isolation technology, connected between there are integration degrees low, device
The problem of relationship complexity affects the performance of AuCT, and then influences the stability and safety of power supply system, Er Qieji
At changing, degree is lower, is also unfavorable for production, assembling and maintenance and repair.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of power conversion device, can be improved AuCT
Working frequency and working efficiency, and then improve the stability and safety of power supply system.
In order to solve the above technical problems, the present invention the following technical schemes are provided:
The present invention provides a kind of power conversion device, comprising: prime boosting unit, inversion unit, resonant element and rectification
Unit；
Wherein, according to the suitable of the prime boosting unit, the inversion unit, the resonant element and the rectification unit
Sequence is arranged, and the prime boosting unit, the inversion unit and the rectification unit are arranged in air intake vent, the resonance
Unit is arranged in air outlet, and power conversion device is made to form U-shaped layout；
The inversion unit, for the direct current of input to be converted to alternating current and exports alternating current；
The rectification unit, the alternating current for exporting inversion unit are converted to direct current；
The prime boosting unit, the voltage value of the direct current for adjusting input inversion unit；
The resonant element, under the excitation for the alternating voltage that inversion unit exports carry out voltage transformation and electrically every
From.
Further, the inversion unit is inverse for the single-phase full bridge inverter circuit or half-bridge of power semiconductor switch pipe composition
Power transformation road.
Further, the rectification unit is the whole bridge rectifier circuit that diode is constituted.
Further, the prime boosting unit includes: power semiconductor switch pipe, diode and Support Capacitor group；
The collector and emitter of the power semiconductor switch pipe is connected with the anode and cathode of direct current respectively, institute
State the anode and cathode of diode one end with the collector of the power semiconductor switch pipe and the Support Capacitor group respectively
It is connected, the other end of the Support Capacitor group is connected with the emitter of the power semiconductor switch pipe；
Wherein, the both ends of the Support Capacitor group are connected with the input terminal of the inversion unit respectively.
Further, detection is provided between the collector of the power semiconductor switch pipe and the anode of the direct current
The current sensor of input current；The voltage sensor of detection input voltage is parallel between the anode and cathode of the direct current
Device；
The voltage sensor is used to detect input voltage and the voltage that will test is sent to controller, the current sense
Device is for detecting input current and the electric current that will test is sent to controller, so that controller is according to the big of detection electric current and voltage
The voltage value of the small direct current by control prime boosting unit adjustment input inversion unit.
Further, the resonant element includes: intermediate-frequency transformer, resonant capacitor and parameter regulator；
Wherein, the primary side of the intermediate-frequency transformer is connect with the output of the inversion unit, secondary side and the rectification unit
Input terminal be connected；
The resonant capacitor and the parameter regulator are connected to primary side or the pair side of intermediate-frequency transformer.
Further, the resonant capacitor and the parameter regulator are connected to the primary side of intermediate-frequency transformer；
Wherein, one end of the resonant capacitor is connected with an output end of the inversion unit, the other end with it is described
One end of parameter regulator is connected, the primary side of the intermediate-frequency transformer respectively with the other end of the parameter regulator and described
Another output end of inversion unit is connected.
Further, the resonant capacitor is arranged side by side by multiple capacitors, and the positive and negative anodes of multiple capacitors pass through two respectively
A metal discharges into row parallel connection；
Wherein, the resonant capacitor uses diagonal outlet.
Further, the parameter regulator includes conducting wire and support column；
Wherein, conducting wire is wound around multiple support columns and forms polygon.
Further, the output end of the rectification unit is equipped with voltage sensor in parallel, voltage sensor detection rectification
The voltage of unit output, and the voltage that will test is sent to controller.
Further, the prime boosting unit, the inversion unit, the resonant element and the rectification unit are uniformly distributed
It is placed in the mounting surface of heat-radiating substrate, the prime boosting unit, the inversion unit, the resonant element and the rectification unit
In semiconductor devices and heat-radiating substrate between be provided with high heat conductive insulating plate.
Further, the input terminal of the prime boosting unit passes through the straight of the power input terminals connection input on panel
Galvanic electricity, the direct current that the output end of the rectification unit passes through the power output terminal connection output on panel；
The power input terminals and the power output terminal are distributed on panel in oblique line formula.
As shown from the above technical solution, a kind of power conversion device provided by the invention, comprising: the inversion unit is used
In the direct current of input is converted to alternating current and exports alternating current；The rectification unit, the friendship for exporting inversion unit
Galvanic electricity is converted to direct current；The prime boosting unit, the voltage value of the direct current for adjusting input inversion unit；Resonance list
Member, for carrying out voltage transformation and electrical isolation under the excitation for the alternating voltage that inversion unit exports；Wherein, the prime liter
The input terminal of unit is pressed to connect DC power supply, output end connects the input terminal of the inversion unit, the input of the resonant element
End and output end are connected with the input terminal of the output end of the inversion unit and the rectification unit respectively, and then can be improved
The working frequency and working efficiency of AuCT, effectively reduce volume and weight, improve the stability and safety of power supply system
Property；And structure is simplified, and can be improved integrated level, is convenient for later maintenance and replacement.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the power conversion device in the embodiment of the present invention；
Fig. 2 is the circuit diagram that inversion unit uses full-bridge inverting in power conversion device provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram that inversion unit uses semi-bridge inversion in power conversion device provided in an embodiment of the present invention；
Fig. 4 is the circuit diagram of rectification unit in power conversion device provided in an embodiment of the present invention；
Fig. 5 is the circuit diagram of prime boosting unit in power conversion device provided in an embodiment of the present invention；
Fig. 6 is the circuit diagram of resonant element in power conversion device provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of resonant capacitor group in power conversion device provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of parameter regulator in power conversion device provided in an embodiment of the present invention；
Fig. 9 is the concatenated structural schematic diagram of power conversion device provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of power conversion device parallel connection provided in an embodiment of the present invention；
Figure 11 is the concatenated line schematic diagram of power conversion device provided in an embodiment of the present invention；
Figure 12 is the line schematic diagram of power conversion device parallel connection provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In view of integration degree is low existing for the existing AuCT using intermediate-frequency transformer isolation, between device
The problem of connection relationship complexity, the application provide a kind of power conversion device, comprising: the inversion unit, for what will be inputted
Direct current is converted to alternating current and exports alternating current；The rectification unit, the alternating current for exporting inversion unit are converted to
Direct current；The prime boosting unit, the voltage value of the direct current for adjusting input inversion unit；Resonant element is used for
Voltage transformation and electrical isolation are carried out under the excitation of the alternating voltage of inversion unit output；Wherein, the prime boosting unit
Input terminal connects DC power supply, and output end connects the input terminal of the inversion unit, the input terminal of the resonant element and output
End is connected with the input terminal of the output end of the inversion unit and the rectification unit respectively, and then can be improved auxiliary converter
The working frequency and working efficiency of device, and then improve the stability and safety of power supply system；And structure is simplified, and can be improved
Integrated level is convenient for later maintenance and replacement.
The present invention provides a kind of power conversion device, referring to Fig. 1, specifically includes: prime boosting unit 10, inversion unit
20, resonant element 30 and rectification unit 40；
The inversion unit 20, for the direct current of input to be converted to alternating current and exports alternating current；
The rectification unit 40, the alternating current for exporting inversion unit 20 are converted to direct current；
The prime boosting unit 10, the voltage value of the direct current for adjusting input inversion unit 20；
The resonant element 30, the alternating current for exporting to inversion unit 20 is filtered and voltage transformation.
It is understood that the direct current of DC power supply output is converted to alternating current by inversion unit, the alternating current is logical
Over commutation cell translation is direct current, realizes being isolated between input dc power and output direct current.During this, by preceding
The voltage value of the direct current of grade boosting unit adjustment input inversion unit, so that the DC voltage of input inversion unit is controlled
System, and then can be improved the working efficiency of AuCT, resonant element, and the alternating voltage for exporting in inversion unit swashs
Encourage lower progress voltage transformation and electrical isolation；Further increase the working frequency and working efficiency of AuCT.
The input terminal of the prime boosting unit 10 connects DC power supply, and output end connects the input of the inversion unit 20
End, the input terminal and output end of the resonant element 30 respectively with the output end and the rectification unit 40 of the inversion unit 20
Input terminal be connected；
Wherein, according to the suitable of the prime boosting unit, the inversion unit, the resonant element and the rectification unit
Sequence is arranged, and the prime boosting unit, the inversion unit and the rectification unit are arranged in air intake vent, the resonance list
Member is arranged in air outlet；
It should be noted that according to the prime boosting unit, the inversion unit, the resonant element and the rectification
The sequence of unit is arranged, and not only shortens the line between each unit, also avoids staggeredly connecting between each unit
It connects, improves the integrated level of power conversion device.In view of the heat resistance difference of different components, will relatively heat labile device (such as
Semiconductor type device) it is placed in the preferable region of radiating condition (such as close air intake vent region), (such as intermediate frequency becomes the opposite component more resistant to heat
The devices such as depressor) it is placed in the poor region of radiating condition (such as close air outlet region), layout can be improved power converting means in this way
The heat dissipation set improves the performance of power conversion device.
As can be seen from the above description, power conversion device provided in an embodiment of the present invention, is carried out by the direct current that will be inputted
Control, reaches expection voltage, realizes that direct current delivers circulation direct current using the inversion unit and rectification unit, and pass through resonance
Unit is filtered to alternating current and voltage transformation, and then can be improved the working frequency and working efficiency of AuCT, has
Effect reduces volume and weight, improves the stability and safety of power supply system；And structure is simplified, and ancillary equipment is greatly reduced
Volume and weight, can be improved integrated level, be convenient for later maintenance and replacement.
Based on the above embodiment, the embodiment of the present invention provides two kinds of specific implementations of inversion unit:
The first implementation, referring to fig. 2, the single-phase full bridge that inversion unit is made of 4 power semiconductor switch pipes are inverse
Power transformation road；
Wherein, four power semiconductor switch pipes of single-phase full bridge inverter circuit are all made of unipolar control, can be improved
The working efficiency of single-phase full bridge inverter circuit.Each bridge arm is connected in turn under the influence of control signals in full-bridge circuit, that is, works as function
When rate semiconductor switch pipe VT1 and power semiconductor switch pipe VT3 is in on-state simultaneously, power semiconductor switch pipe VT2 and function
Rate semiconductor switch pipe VT4 is in off-state, and electric current flows to power semiconductor switch pipe VT4 from power semiconductor switch pipe VT1, defeated
Voltage is positive out；When power semiconductor switch pipe VT2 and power semiconductor switch pipe VT4 is in on-state simultaneously, power is partly led
Body switching tube VT1 and power semiconductor switch pipe VT3 is in off-state, and electric current flows to power half from power semiconductor switch pipe VT2
Conductor switching tube VT3, output voltage are negative, and direct current is converted to alternating current to realize；Wherein, single-phase full bridge inverter circuit
Output voltage frequency by control signal deciding.
Second of implementation, referring to Fig. 3, the single-phase semi-bridge that inversion unit is made of 2 power semiconductor switch pipes is inverse
Power transformation road；
Wherein, power semiconductor switch pipe VT32 is connected, and power semiconductor switch pipe VT31 cut-off is flowed from power semiconductor
Switching tube VT32 outflow, output voltage are positive；Power semiconductor switch pipe VT32 cut-off, power semiconductor switch pipe VT31 are led
Logical, stream is flowed out from power semiconductor switch pipe VT32, and output voltage is negative.
As can be seen from the above description, using power semiconductor switch pipe constitute inversion unit, have it is simple for structure, collective is small,
The high advantage of integrated level, additionally it is possible to improve AuCT working efficiency, and then improve the stability and safety of power supply system.
Based on the above embodiment, the embodiment of the present invention provides a kind of specific implementation of rectification unit, referring to fig. 4, whole
Flowing unit is the bridge rectifier that diode is constituted, preferably whole bridge rectifier circuit.
Wherein, the output end of rectification unit is equipped with voltage sensor in parallel, and voltage sensor detects rectification unit output
Voltage, and the voltage that will test is sent to controller.
The output end of rectification unit is equipped with and is parallel with DC capacitor, and the DC capacitor is for eliminating line inductance to LLC
The influence of control.
As can be seen from the above description, the whole bridge rectifier circuit constituted using 4 diodes, can be improved the work of rectification unit
Make efficiency, and then can be improved AuCT working efficiency, and then improves the efficiency and stability of power supply system.
Based on the above embodiment, the embodiment of the present invention provides a kind of specific implementation of prime boosting unit, referring to figure
5, prime boosting unit includes: power semiconductor switch pipe VT, diode and Support Capacitor group；
The collector and emitter of power semiconductor switch pipe VT is connected with the anode and cathode of direct current respectively, described
The anode and cathode of diode one end with the collector of the power semiconductor switch pipe VT and the Support Capacitor group respectively
It is connected, the other end of the Support Capacitor group is connected with the emitter of the power semiconductor switch pipe VT；Pass through control
The grid of power semiconductor switch pipe VT, can control the switch of power semiconductor switch pipe VT, so that it is inverse to reach adjustment input
Become the voltage value of the direct current of unit.
Wherein, the both ends of the Support Capacitor group are connected with the input terminal of the inversion unit 20 respectively, are used for energy storage,
And Support Capacitor group is fixed using insulation clip, to improve the voltage endurance capability of Support Capacitor group over the ground.
Detection input electricity is provided between the collector of the power semiconductor switch pipe VT and the anode of the direct current
The current sensor of stream；The voltage sensor of detection input voltage is parallel between the anode and cathode of the direct current；
The voltage sensor is used to detect input voltage and the voltage that will test is sent to controller, the current sense
Device is for detecting input current and the electric current that will test is sent to controller, so that controller is according to the big of detection electric current and voltage
The voltage value of the small direct current by the control adjustment input inversion unit 20 of prime boosting unit 10.
Based on the above embodiment, the embodiment of the present invention provides a kind of specific implementation of resonant element, humorous referring to Fig. 6
The unit that shakes includes: intermediate-frequency transformer, resonant capacitor and parameter regulator；
It should be noted that resonant capacitor can both be arranged in the primary side (primary side) of intermediate-frequency transformer, it can also be with cloth
The secondary side (secondary side) in intermediate-frequency transformer is set, the two can accomplish equivalence.Resonant capacitor is arranged in the present embodiment
The primary side (primary side) of intermediate-frequency transformer.
One end of the resonant capacitor is connected with an output end of the inversion unit 20, the other end and the parameter
One end of adjuster is connected, the primary side of the intermediate-frequency transformer respectively with the other end of the parameter regulator and the inversion
Another output end of unit 20 is connected；
Wherein, the secondary side of the intermediate-frequency transformer is connected with the input terminal of the rectification unit 40.
Further, a kind of connection scheme of resonant capacitor by multiple capacitors 73 as shown in fig. 7, be arranged side by side, in Fig. 7
It is arranged side by side for 5 identical capacitors 73, the positive and negative anodes of 5 identical capacitors 73 pass through copper bar 72 respectively and copper bar 74 carries out simultaneously
Connection.The terminal that copper bar 72 and copper bar 74 connect is the input terminal and output end of resonant capacitor, the end of the connection of resonant capacitor
Son uses the diagonal outlet of 75 formula of terminal 71 and terminal, guarantees the consistency of devices in parallel structural path, avoids shunt capacitance
Current-unbalance between 73 individuals generates heat unbalanced.
Further, a kind of implementation of parameter regulator is as shown in figure 8, parameter regulator includes conducting wire and support column
84, conducting wire is wound around multiple support columns 84 and forms polygon.In Fig. 8,4 support columns 84 are surrounded from inside by conducting wire
It is fixed and surrounds quadrangle, the end 81 and end 82 of conducting wire are respectively the input terminal and output end of the parameter regulator, and every
One group of tieing wire knot 83 is embedded in support column 84.It can be by selecting different tieing wire knots 83, available different coil-span；
Can also be as needed around fractional turns coil to be produced, the coil in Fig. 8 is 41/2 circle.The parameter regulator is for realizing to electricity
Sense carries out quantitative control, meets the needs of to loop stray parameter, and parameter regulator can also play and filter out harmonic wave, limits
The effect shoved.
As can be seen from the above description, power conversion device provided by the embodiments of the present application is compact-sized, and then conveniently in unit
Interior Installation And Test, and driving plate is connected to by lead the control terminal of power semiconductor switch pipe, it can be by lead
Stray parameter brings interference to be preferably minimized, and realizes the protection to power conversion device.
Based on the above embodiment, prime boosting unit, inversion unit, resonant element and rectification unit in power conversion device
It is arranged in heat-radiating substrate mounting surface, and the semiconductor device in prime boosting unit, inversion unit, resonant element and rectification unit
It is isolated between part and heat-radiating substrate with high heat conductive insulating plate, is realized under the premise of not reducing heat dissipation performance, improves device
The voltage endurance capability of encapsulation over the ground.
Further, the input terminal of the prime boosting unit passes through the straight of the power input terminals connection input on panel
Galvanic electricity, the direct current that the output end of the rectification unit passes through the power output terminal connection output on panel；
The power input terminals and the power output terminal are distributed on panel in oblique line formula, convenient for real in unit
Series-parallel use between existing multiple same units, and power input terminals and power output terminal are uniformly arranged in front end
On panel, convenient for the connection of same other function unit.
It should be noted that the control interface of driving plate and controller is respectively provided on the panel with front end, convenient for assembling
With test.
Power conversion device can be regarded as basic unit by the distribution based on power input terminals and power output terminal,
It in order to be adapted to the input voltage of higher standard, and is connected by the prime of basic unit 1 and unit 2, as shown in Figure 9.By base
1.2 terminals of this unit 1 and 1.1 terminals of basic unit 2 are shorted, at this time 1.1 terminals and basic unit of basic unit 1
2 1.2 terminals constitute direct-flow input end；The output Same Name of Ends of basic unit 1 and basic unit 2 is shorted respectively, is constituted
The DC output end of the assembled unit；In order to meet the needs of user's more high-output power, as shown in Figure 10, by basic unit 1
It is used in parallel with basic unit 2, the input of the two units, output Same Name of Ends are shorted respectively, constitute the parallel units
Direct current output and input.
In order to avoid power terminal connecting line interlocks during basic unit is in series and parallel, as shown in figure 11, function
Rate terminal occupies the upper left corner area of front panel, and control interface occupies the lower right corner of front panel.From left to bottom right, power terminal
It is followed successively by direct current input P, direct current input N, direct current output P, direct current output N；The connection illustrated in Figure 11 and Figure 12, respectively corresponds
The series/parallel combination operational version of Fig. 9 and Figure 10 can effectively avoid cable/copper bar interleaving problem between modular power terminal.
As can be seen from the above description, power conversion device provided by the invention, has the advantages that
1. more reasonably meeting the radiating requirements of heating device, makes to place the more sensitive semiconductor devices of high temperature and enter the wind
Mouth region domain, the higher transformer of tolerance are placed in air outlet position, it is thorough its respectively to the temperature requirement of working environment.
2. increasing parameter regulator in resonant element, distribution parameter can be changed by adjusting line length, realized to humorous
Vibration parameter accurately controls.
3. improving insulation performance and pressure-resistant performance, guarantees electric component uniformity at work, particular device is avoided to hold
It is excessive by " stress ", improve the reliability of power conversion device.
4. power conversion device is compact-sized, intelligent and integrated level is improved, while simplifying live general assembly behaviour
Make, is convenient for later maintenance and replacement.
5. the application of power conversion device has stronger adaptability and scalability, which be can be used as substantially
Functional unit, can be directed to different power demands, multiple wired in parallel be used, achieve the effect that dilatation；It can also will be more
The input of a module is connected, to adapt to the input voltage of greater degree；
6. the terminal arrangement of power conversion device, can effectively avoid cable in module series and parallel use process/
The interleaving problem of copper bar.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Herein, such as
One and second or the like relational terms are only used to distinguish one entity or operation from another entity or operation,
Without necessarily requiring or implying between these entities or operation, there are any actual relationship or orders.Moreover, art
A series of language "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that including want
The process, method, article or equipment of element not only includes those elements, but also including other elements that are not explicitly listed,
It further include either for elements inherent to such a process, method, article, or device.The side of the instructions such as term " on ", "lower"
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description of the present invention and simplification of the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection "
It shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, it can understand as the case may be above-mentioned term in the present invention
Concrete meaning.
In specification of the invention, numerous specific details are set forth.Although it is understood that the embodiment of the present invention can
To practice without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this specification.Similarly, it should be understood that disclose in order to simplify the present invention and helps to understand respectively
One or more of a inventive aspect, in the above description of the exemplary embodiment of the present invention, each spy of the invention
Sign is grouped together into a single embodiment, figure, or description thereof sometimes.More precisely, as claims institute is anti-
As reflecting, inventive aspect is all features less than single embodiment disclosed above.Therefore, it then follows specific embodiment
Claims be thus expressly incorporated in the specific embodiment, wherein each claim itself is as list of the invention
Only embodiment.It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The invention is not limited to any single aspects, are also not limited to any single embodiment, are also not limited to this
Any combination and/or displacement of a little aspects and/or embodiment.Furthermore, it is possible to which each aspect and/or reality of the invention is used alone
It applies example or is used in combination with other one or more aspects and/or embodiment.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (12)
1. a kind of power conversion device characterized by comprising prime boosting unit, inversion unit, resonant element and rectification are single
Member；
Wherein, according to the prime boosting unit, the inversion unit, the resonant element and the rectification unit sequence into
Row arrangement, the prime boosting unit, the inversion unit and the rectification unit are arranged in air intake vent, the resonant element
It is arranged in air outlet, power conversion device is made to form U-shaped layout；
The inversion unit, for the direct current of input to be converted to alternating current and exports alternating current；
The rectification unit, the alternating current for exporting inversion unit are converted to direct current；
The prime boosting unit, the voltage value of the direct current for adjusting input inversion unit；
The resonant element, for carrying out voltage transformation and electrical isolation under the excitation for the alternating voltage that inversion unit exports.
2. power conversion device according to claim 1, which is characterized in that the inversion unit is power semiconductor switch
The single-phase full bridge inverter circuit or half-bridge inversion circuit that pipe is constituted.
3. power conversion device according to claim 1, which is characterized in that the rectification unit is the complete of diode composition
Bridge rectifier.
4. power conversion device according to claim 1, which is characterized in that the prime boosting unit includes: power half
Conductor switching tube, diode and Support Capacitor group；
The collector and emitter of the power semiconductor switch pipe is connected with the anode and cathode of direct current respectively, and described two
The anode and cathode of pole pipe is connected with one end of the collector of the power semiconductor switch pipe and the Support Capacitor group respectively
It connects, the other end of the Support Capacitor group is connected with the emitter of the power semiconductor switch pipe；
Wherein, the both ends of the Support Capacitor group are connected with the input terminal of the inversion unit respectively.
5. power conversion device according to claim 4, which is characterized in that the collector of the power semiconductor switch pipe
The current sensor of detection input current is provided between the anode of the direct current；The direct current anode and cathode it
Between be parallel with detection input voltage voltage sensor；
The voltage sensor is used to detect input voltage and the voltage that will test is sent to controller, and the current sensor is used
In detection input current and the electric current that will test is sent to controller, so that controller is logical according to the size of detection electric current and voltage
Cross the voltage value of the direct current of control prime boosting unit adjustment input inversion unit.
6. power conversion device according to claim 1, which is characterized in that the resonant element include: intermediate-frequency transformer,
Resonant capacitor and parameter regulator；
Wherein, the primary side of the intermediate-frequency transformer is connect with the output of the inversion unit, and secondary side is defeated with the rectification unit
Enter end to be connected；
The resonant capacitor and the parameter regulator are connected to primary side or the pair side of intermediate-frequency transformer.
7. power conversion device according to claim 6, which is characterized in that the resonant capacitor and parameter adjustment
Device is connected to the primary side of intermediate-frequency transformer；
Wherein, one end of the resonant capacitor is connected with an output end of the inversion unit, the other end and the parameter
One end of adjuster is connected, the primary side of the intermediate-frequency transformer respectively with the other end of the parameter regulator and the inversion
Another output end of unit is connected.
8. power conversion device according to claim 6, which is characterized in that the resonant capacitor by multiple capacitors side by side
Arrangement, the positive and negative anodes of multiple capacitors pass through two metals respectively and discharge into row parallel connection；
Wherein, the resonant capacitor uses diagonal outlet.
9. power conversion device according to claim 6, which is characterized in that the parameter regulator includes conducting wire and support
Column；
Wherein, conducting wire is wound around multiple support columns and forms polygon.
10. power conversion device according to claim 1, which is characterized in that the output end of the rectification unit is equipped with simultaneously
The voltage sensor of connection, voltage sensor detects the voltage of rectification unit output, and the voltage that will test is sent to controller.
11. power conversion device according to claim 1, which is characterized in that the prime boosting unit, the inversion list
First, the described resonant element and the rectification unit are arranged in the mounting surface of heat-radiating substrate, the prime boosting unit, described inverse
Become between unit, the resonant element and semiconductor devices and heat-radiating substrate in the rectification unit and is provided with high heat conductive insulating
Plate.
12. power conversion device according to claim 1, which is characterized in that the input terminal of the prime boosting unit is logical
The direct current of the power input terminals connection input on panel is crossed, the output end of the rectification unit is defeated by the power on panel
The direct current of terminal connection output out；
The power input terminals and the power output terminal are distributed on panel in oblique line formula.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456276.3A CN110289764A (en) | 2019-05-29 | 2019-05-29 | Power conversion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456276.3A CN110289764A (en) | 2019-05-29 | 2019-05-29 | Power conversion device |
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| CN110289764A true CN110289764A (en) | 2019-09-27 |
Family
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|---|---|---|---|
| CN201910456276.3A Pending CN110289764A (en) | 2019-05-29 | 2019-05-29 | Power conversion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552863A (en) * | 2021-08-11 | 2021-10-26 | 广西电网有限责任公司电力科学研究院 | Additional temperature rise calibrating device and method for transformer winding temperature controller |
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