CN208257686U - High-voltage d. c inverse transform power circuit - Google Patents
High-voltage d. c inverse transform power circuit Download PDFInfo
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- CN208257686U CN208257686U CN201820137223.6U CN201820137223U CN208257686U CN 208257686 U CN208257686 U CN 208257686U CN 201820137223 U CN201820137223 U CN 201820137223U CN 208257686 U CN208257686 U CN 208257686U
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Abstract
The utility model discloses high-voltage d. c inverse transform power circuits, control circuit, isolation circuit, switching power circuit, driving circuit, isolation circuit includes for electric isolating circuit and control isolation circuit, control isolation circuit and driving circuit have been sequentially connected in series between control circuit and inverter circuit, switching power circuit is the light current power supply that DC power supply circuit is drawn, and Switching Power Supply is separately connected control circuit and control isolation；So as to overcome low-voltage input in the prior art, cable waste is serious during remote transmission, is easy to be disturbed and break down.The Electro Magnetic Compatibility of itself is poor simultaneously, and other hosts are interfered in terms of radiating and conducting two, generate greatly threat.In addition volume is big, noise is especially big, fever is severe；Impact resistance is poor, is not able to satisfy the requirement of most of electrical equipments；Load capacity is poor, cannot cope with the use of capacitive load.
Description
Technical field
The present invention relates to power technique fields, and in particular, to a kind of high-voltage d. c inverse transform power circuit.
Background technique
High-voltage d. c inverse transform power circuit is a kind of product for aiming at the customization of inverter required for specific occasion, root
According to use demand, settable DC voltage range is DC200V-DC800V, and major function is that high voltage direct current is converted into exchanging
Electricity.The development of current era power supply product has been obtained certain development and changes, but there are some problems: low-voltage is defeated
Enter, cable waste is serious during remote transmission, is easy to be disturbed and break down.Simultaneously itself Electro Magnetic Compatibility compared with
Difference interferes other hosts in terms of radiating and conducting two, generates greatly threat.In addition volume is big, noise is especially big, fever is strict
Evil；Impact resistance is poor, is not able to satisfy the requirement of most of electrical equipments；Load capacity is poor, cannot cope with capacitive load
Use.
Summary of the invention
It is an object of the present invention in view of the above-mentioned problems, propose a kind of high-voltage d. c inverse transform power circuit, it is existing to overcome
The defect of technology, and realize the input voltage range of ultra-wide, DC200V-DC800V direct current is converted into AC220V.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of high-voltage d. c inverse transform power circuit, it is main to wrap
It includes:
Control circuit, control inverter power circuit follows benchmark alternating current, and keeps identical phase and frequency with it, from
It is dynamic to adjust, make power supply within the limits prescribed, is run according to the protection definite value of setting；
Inverter circuit, by the converting direct-current power into alternating-current power of input；
Isolation circuit, including for electric isolating circuit and control isolation circuit, prevent high pressure from sealing in, PWM high voltage is isolated.
Driving circuit drives inverter circuit；
Switching power circuit draws light current power supply for DC power supply；
Filter circuit filters out useless waveform, output stable DC electricity；
And input circuit, including direct-flow input circuit is for direct current input；
The output end and inverter circuit of the filter circuit are electrically connected, and the isolation circuit and driving circuit are connected on control
Between circuit and inverter circuit processed, the output end and inverter circuit of the driving circuit are electrically connected, the switching power circuit
One end and input circuit be electrically connected, the other end respectively with control isolation circuit and control circuit be electrically connected.
Further, the control circuit includes TMS320 digitial controller.
Further, the isolation circuit is specially isolating transformer circuit.
Further, it is DC200V-DC800V circuit that the switching power circuit, which is specially DC input voitage range,.
Further, the driving circuit includes ACPL-332J driving chip, drives 600A inverter circuit.
Further, the inverter circuit is bridge inverter main circuit, and bridge inverter main circuit includes first switch, second opens
It closes, third switch and the 4th switch, first switch and the second switch the first bridge arm in series, third switch and the 4th switch series
Connection constitutes the second bridge arm；First bridge arm two sides have been parallel with electrode capacitance C1, the first bridge arm of filter circuit and bridge inverter main circuit
Between be in series with switch S1, diode D1 and resistance R1 composition series arm, series arm is connected in parallel on the two sides switch S1, and direct current is defeated
Enter to be sequentially connected in series switch S2 and diode D2 between circuit and switching power circuit；Between second bridge arm and bypass changeover circuit
Crossfire has transformer, and node and between first switch and second switch is electrically connected in the both ends of transformer first winding
Node between three switches and the 4th switch, is electrically connected with inductance coil between transformer secondary winding and bypass changeover circuit
L is electrically connected with capacitor C2 between inductance coil L and control circuit.
The high-voltage d. c inverse transform power circuit of various embodiments of the present invention, control circuit, isolation circuit, switching power circuit,
Driving circuit, isolation circuit include successively going here and there between control circuit and inverter circuit for electric isolating circuit and control isolation circuit
It is associated with control isolation circuit and driving circuit, switching power circuit is the light current power supply that DC power supply circuit is drawn, Switching Power Supply
Control circuit and control isolation is electrically connected；So as to overcome low-voltage input in the prior art, remote transmission process
Middle cable waste is serious, is easy to be disturbed and break down.The Electro Magnetic Compatibility of itself is poor simultaneously, from radiation and conduction two
Aspect interferes other hosts, generates and greatly threatens.In addition volume is big, noise is especially big, fever is severe；Impact resistance is poor,
It is not able to satisfy the requirement of most of electrical equipments；Load capacity is poor, cannot cope with the use of capacitive load.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is high-voltage d. c inverse transform circuit construction of electric power schematic diagram described in the utility model embodiment；
Fig. 2 is the electric operation control circuit figure in high-voltage d. c inverse transform power circuit described in the utility model embodiment；
Fig. 3 is the isolates circuit diagram in high-voltage d. c inverse transform power circuit described in the utility model embodiment；
Fig. 4 is the switching power circuit in high-voltage d. c inverse transform power circuit described in the utility model embodiment；
Fig. 5 is the driving circuit in high-voltage d. c inverse transform power circuit described in the utility model embodiment.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment one:
As shown in Figure 1, control circuit, control inverter power circuit follows benchmark alternating current, and keeps identical phase with it
Position and frequency, automatic adjustment, make power supply within the limits prescribed, run according to the protection definite value of setting；
Inverter circuit, by the converting direct-current power into alternating-current power of input；
Isolation circuit, including for electric isolating circuit and control isolation circuit, prevent high pressure from sealing in, it is effective that PWM high is isolated
Voltage guarantees power supply safety
Driving circuit drives inverter circuit；
Switching power circuit exports after high-voltage DC power supply is converted to low-tension supply to control unit；
Filter circuit filters out useless waveform, output stable DC electricity；
And input circuit, including direct-flow input circuit be respectively used to direct current input and；
The output end and inverter circuit of the filter circuit are electrically connected, and the isolation circuit and driving circuit are connected on control
Between circuit and inverter circuit processed, the output end and inverter circuit of the driving circuit are electrically connected, the switching power circuit
One end and input circuit be electrically connected, the other end respectively with control isolation circuit and control circuit be electrically connected.
The input filter of filter circuit is filtered out for useless waveform in input terminal DC power supply, obtain one it is stable
Direct current is re-fed into inverter；Output filter (C2) is mainly used for keeping output flat in one except AC harmonic and interference
Steady state；Inverter circuit is used for converting direct-current power into alternating-current power；Control circuit follows benchmark for controlling inverter power supply
Alternating current, and identical phase and frequency is kept with it, it automatically adjusts, and make power supply within the limits prescribed, according to the guarantor of setting
Protect definite value operation.Wherein, input circuit include direct current input and bypass input, isolation circuit include for be electrically isolated and control every
From filter circuit includes filter, and inverter circuit includes bridge inverter main circuit, and bridge inverter main circuit includes first switch, second
Switch, third switch and the 4th switch, first switch and the second switch the first bridge arm in series, third switch and the 4th switch
Second bridge arm in series, driving circuit include ACPL-332J driving chip, and control circuit includes TMS32 digitial controller.
Embodiment two:
Control circuit combined with Figure 1 and Figure 2, using advanced TMS320 digitial controller, TMS320 series DSP is software
Programming device has the characteristics that convenient, flexible possessed by general purpose microprocessor.
Specific electric connection structure is given in Fig. 2 to realize the function of control circuit.Resistance or capacitor in figure
Size can according to need carry out value.
Embodiment three:
It is not specially isolating transformer circuit structure to realize in conjunction with Fig. 1 and Fig. 3, Fig. 3 structure for giving isolation circuit
The function of isolation circuit can be monitored and be realized the effect of forceful electric power isolation using isolating transformer scheme, pacify system more
Entirely.
Example IV:
As shown in figure 4, giving the structure of switching power circuit, it is sufficient to realize input voltage range DC200V-
DC800V belongs to the input voltage range of ultra-wide.
Embodiment five:
As shown in figure 5, the driving circuit includes ACPL-332J driving chip, 600A inverter circuit is driven.In Fig. 5
The function of driving circuit may be implemented in structure completely, and the choosing value of resistance capacitance can be set according to actual needs.
Embodiment six:
In conjunction with Fig. 1, inverter circuit is used for converting direct-current power into alternating-current power；Control circuit for control inverter power supply with
It (can be realized), and keep identical phase and frequency with it, be automatically adjusted by supply frequency sample circuit with benchmark alternating current, and
Make power supply within the limits prescribed, is run according to the protection definite value of setting.Wherein, input circuit includes direct current input and bypasses defeated
Enter, isolation circuit includes for being electrically isolated and controlling isolation, and filter circuit includes filter, and inverter circuit includes bridge type inverse electricity
Road, bridge inverter main circuit include first switch 101, second switch 102, third switch 103 and the 4th switch 104, first switch
With second switch the first bridge arm in series, third switch and the 4th switch the second bridge arm in series, driving circuit include
ACPL-332J driving chip, control circuit include TMS32 digitial controller.
This high-voltage d. c inverse transform power circuit specific structure is such that direct current input is in series with filter and bridge type inverse
Circuit has been sequentially connected in series control and be isolated and driving chip between TMS32 digitial controller and bridge inverter main circuit, TMS32 is digital
Controller is also electrically connected the second bridge arm of bridge inverter main circuit, and Switching Power Supply is the light current power supply that DC power supply is drawn, switch
Power supply is electrically connected with for being electrically isolated, and TMS32 digitial controller and control isolation, bridge type inverse is electrically connected in Switching Power Supply
First bridge arm two sides of circuit have been parallel with electrode capacitance C1, are in series with out between filter and the first bridge arm of bridge inverter main circuit
It closes S1, diode D1 and resistance R1 and forms series arm, series arm is connected in parallel on the two sides switch S1, direct current input and Switching Power Supply
Between be sequentially connected in series switch S2 and diode D2, there is crossfire between the second bridge arm and bypass changeover circuit of bridge inverter main circuit
Node and third switch between first switch and second switch is electrically connected in transformer, the both ends of transformer first winding
Node between the 4th switch, is electrically connected with inductance coil L, inductance between transformer secondary winding and bypass changeover circuit
Capacitor C2 is electrically connected between coil L and control circuit.
At least can achieve it is following the utility model has the advantages that using IGBT inversion transformation technique, can outputting standard sine wave, wave distortion
Degree is lower, and band Combination load capacity is strong.A kind of dedicated circuit of DC high voltage is provided for inverter, effectively improves safety
Property and stability, input direct-current high voltage in overlength distance transmission process, reduce the loss of cable；Circuit structure is simple, and energy
Mains frequency is enough automatically tracked, switching free of discontinuities makes power supply switching nature without impact, ensure that the high reliability power supply of load is wanted
It asks
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. a kind of high-voltage d. c inverse transform power circuit characterized by comprising
Control circuit, control inverter power circuit follows benchmark alternating current, and keeps identical phase and frequency with it, automatic to adjust
Section, makes power supply within the limits prescribed, runs according to the protection definite value of setting；
Inverter circuit, by the converting direct-current power into alternating-current power of input；
Isolation circuit, including for electric isolating circuit and control isolation circuit, prevent high pressure from sealing in, PWM high voltage is isolated；
Driving circuit drives inverter circuit；
Switching power circuit exports after high-voltage DC power supply is converted to low-tension supply to control unit；
Filter circuit filters out useless waveform, output stable DC electricity；
And input circuit, including direct-flow input circuit for direct current input and；
The output end and inverter circuit of the filter circuit are electrically connected, and the isolation circuit and driving circuit are connected on control electricity
Between road and inverter circuit, the output end and inverter circuit of the driving circuit are electrically connected, and the one of the switching power circuit
End is electrically connected with input circuit, and the other end is electrically connected with control isolation circuit and control circuit respectively；
The control circuit includes TMS320 digitial controller；The isolation circuit is specially isolating transformer circuit；It is described to open
Powered-down source circuit is specially that DC input voitage range is DC200V-DC800V circuit；The driving circuit includes ACPL-332J
Driving chip drives 600A inverter circuit；The inverter circuit is bridge inverter main circuit, and bridge inverter main circuit is opened including first
Pass, second switch, third switch and the 4th switch, first switch and the second switch the first bridge arm in series, third switch and
4th switch the second bridge arm in series；First bridge arm two sides have been parallel with electrode capacitance C1, filter circuit and bridge inverter main circuit
The first bridge arm between be in series with switch S1, diode D1 and resistance R1 composition series arm, series arm is connected in parallel on switch S1
Two sides have been sequentially connected in series switch S2 and diode D2 between direct-flow input circuit and switching power circuit；Second bridge arm and bypass
Crossfire has a transformer between switching circuit, the both ends of transformer first winding be electrically connected first switch and second switch it
Between node and third switch the 4th switch between node, electrically connect between transformer secondary winding and bypass changeover circuit
It is connected to inductance coil L, capacitor C2 is electrically connected between inductance coil L and control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820137223.6U CN208257686U (en) | 2018-01-26 | 2018-01-26 | High-voltage d. c inverse transform power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820137223.6U CN208257686U (en) | 2018-01-26 | 2018-01-26 | High-voltage d. c inverse transform power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208257686U true CN208257686U (en) | 2018-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820137223.6U Active CN208257686U (en) | 2018-01-26 | 2018-01-26 | High-voltage d. c inverse transform power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208257686U (en) |
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2018
- 2018-01-26 CN CN201820137223.6U patent/CN208257686U/en active Active
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