CN203537235U - High frequency isolated type high voltage DC power taking supply unit - Google Patents
High frequency isolated type high voltage DC power taking supply unit Download PDFInfo
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- CN203537235U CN203537235U CN201320629846.2U CN201320629846U CN203537235U CN 203537235 U CN203537235 U CN 203537235U CN 201320629846 U CN201320629846 U CN 201320629846U CN 203537235 U CN203537235 U CN 203537235U
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- bridge arm
- arm unit
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- power
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- 230000001939 inductive effect Effects 0.000 claims abstract description 14
- 238000002955 isolation Methods 0.000 claims description 9
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a high frequency isolated type high voltage DC power taking supply unit. A first inverter circuit includes an inductive branch and a first bridge arm unit which are connected in parallel with a DC input power supply; a rectifier circuit comprises a second bridge arm unit, a third bridge arm unit and an output capacitor; an input side of a high-frequency transformer is connected with the midpoint of the inductive branch and the midpoint of the first bridge arm unit, while the output side of the high-frequency transformer is connected with the midpoint of the second bridge arm unit and the midpoint of the third bridge arm unit; a second inverter circuit includes a fourth bridge arm unit and a fifth bridge arm unit which are connected in parallel with the output capacitor, and the midpoint of the fourth bridge arm unit and the midpoint of the fifth bridge arm unit constitute the output end of the supply unit; a signal acquisition and processing circuit is connected between the first inverter circuit and a digital control chip; and a driving circuit is connected between the digital control chip and power switches of the first bridge arm unit, the second bridge arm unit, the third bridge arm unit, the fourth bridge arm unit and the fifth bridge arm unit.
Description
Technical field
The utility model relates to transformation of electrical energy field, in particular to the supply unit of a kind of high-frequency isolation type high voltage direct current power taking.
Background technology
In some green energy resource electricity generation system application, be for example applied to solar cell power generation system or energy-storage system of accumulator, the power supply of control system or current transformer need to be supplied with from solar panel or storage battery, and this direct voltage is higher conventionally.In daily life, need to be according to the different adjustment power of applied environment, this just requires the power supply of power supply must be the adjustable power supply of power output.But the volume of traditional power regulated power supply is larger, circuit structure is complicated, and the sensitivity of power adjustments is low, and power is difficult for expansion.
Utility model content
The utility model provides the supply unit of a kind of high-frequency isolation type high voltage direct current power taking, in order to high voltage direct current electric energy is converted into controlled AC energy.
For achieving the above object, the utility model provides the supply unit of a kind of high-frequency isolation type high voltage direct current power taking, comprise: the first inverter circuit, high frequency transformer, rectification circuit, the second inverter circuit, signals collecting and treatment circuit, digital control chip and drive circuit, wherein:
The first inverter circuit comprises inductive branch and the first bridge arm unit, and inductive branch and the first bridge arm unit are in parallel with direct-current input power supplying respectively;
Rectification circuit comprises the second bridge arm unit, the 3rd bridge arm unit and output capacitance in parallel;
The input side of high frequency transformer is connected with inductive branch mid point, the first bridge arm unit mid point respectively, and the outlet side of high frequency transformer is connected with the second bridge arm unit mid point, the 3rd bridge arm unit mid point respectively;
The second inverter circuit comprises the 4th bridge arm unit in parallel with output capacitance respectively and the 5th bridge arm unit, and the 4th bridge arm unit mid point and the 5th bridge arm unit mid point form the output of supply unit;
Wherein, the first bridge arm unit, the second bridge arm unit, the 3rd bridge arm unit, the 4th bridge arm unit and the 5th bridge arm unit consist of two power switch pipes respectively;
Signals collecting and treatment circuit are connected between the first inverter circuit and digital control chip;
Drive circuit is connected between digital control chip and the first bridge arm unit, the second bridge arm unit, the 3rd bridge arm unit, the 4th bridge arm unit and the power switch pipe of the 5th bridge arm unit.
Optionally, inductive branch comprises the electric capacity of two series connection.
Optionally, power switch pipe is metal-oxide-semiconductor, IGBT pipe, carborundum SiC power device or IGCT controllable type device for power switching.
Optionally, above-mentioned supply unit also comprises: accessory power supply is digital control chip and drive circuitry.
Above-described embodiment provides a kind of communication power supply from high voltage direct current power taking, by the setting of transformer, make access input supply voltage can be higher, simultaneously input with output realize electrical isolation; By the setting of high frequency transformer, greatly reduced equipment volume, improved efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the supply unit schematic diagram of the high-frequency isolation type high voltage direct current power taking of an embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not paying the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the supply unit schematic diagram of the high-frequency isolation type high voltage direct current power taking of an embodiment of the utility model.As shown in the figure, this supply unit comprises: the first inverter circuit, high frequency transformer T, rectification circuit, the second inverter circuit, signals collecting and treatment circuit, digital control chip and drive circuit, wherein:
The first inverter circuit comprises inductive branch and the first bridge arm unit, inductive branch and the first bridge arm unit respectively with direct-current input power supplying u
in(direct current input side both positive and negative polarity connects respectively storage battery or other DC power supply both positive and negative polarity) parallel connection;
Rectification circuit comprises the second bridge arm unit, the 3rd bridge arm unit and output capacitance C in parallel
3;
The input side u of high frequency transformer T
o1be connected with inductive branch mid point, the first bridge arm unit mid point respectively, the outlet side of high frequency transformer T is connected with the second bridge arm unit mid point, the 3rd bridge arm unit mid point respectively;
The second inverter circuit comprises respectively and output capacitance C
3the 4th bridge arm unit and the 5th bridge arm unit in parallel, the 4th bridge arm unit mid point and the 5th bridge arm unit mid point form the output u of supply unit
o, output u
oconnect AC load;
Wherein, the first bridge arm unit, the second bridge arm unit, the 3rd bridge arm unit, the 4th bridge arm unit and the 5th bridge arm unit consist of two power switch pipes respectively, and the first bridge arm unit comprises power switch pipe T
1, T
2, the second bridge arm unit comprises power switch pipe T
3, T
4, the 3rd bridge arm unit comprises power switch pipe T
5, T
6, the 4th bridge arm unit comprises power switch pipe T
7, T
8, the 5th bridge arm unit comprises power switch pipe T
9, T
10;
Signals collecting and treatment circuit are connected between the first inverter circuit and digital control chip, signals collecting and treatment circuit are as test section, for gather DC input voitage and/or the current signal of the first inverter circuit and amplify, the signal of filtering, A/D conversion processes, and realized the high accuracy detection of voltage and current signal and the measuring ability of signal processing function and fault-signal;
Drive circuit is connected between digital control chip and the first bridge arm unit, the second bridge arm unit, the 3rd bridge arm unit, the 4th bridge arm unit and the power switch pipe of the 5th bridge arm unit.
In the present embodiment, the main power circuit that the first inverter circuit, high frequency transformer, rectification circuit and the second inverter circuit form; Digital control chip is as control section, it is the core of supply unit, adopt high performance control chip by the conducting and the control of shutoff realization to output voltage of device for power switching, given target voltage and/or current data that preset in the DC input voitage after signals collecting and processing circuit processes and/or current data and digital control chip or artificial compared, calculated, and export the control signal of the output that can change drive circuit, drive circuit is output as the adjustable square wave of duty ratio.
In Fig. 1 embodiment, inductive branch comprises the capacitor C of two series connection
1, C
2.
For example, power switch pipe is metal-oxide-semiconductor, IGBT pipe, carborundum SiC power device or IGCT controllable type device for power switching.
For example, above-mentioned supply unit also comprises: accessory power supply is digital control chip and drive circuitry.
Above-described embodiment provides a kind of communication power supply from high voltage direct current power taking, by the setting of transformer, make access input supply voltage can be higher, simultaneously input with output realize electrical isolation; By the setting of high frequency transformer, greatly reduced equipment volume, improved efficiency.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the utility model is necessary.
One of ordinary skill in the art will appreciate that: the module in the device in embodiment can be described and be distributed in the device of embodiment according to embodiment, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model embodiment technical scheme.
Claims (4)
1. a supply unit for high-frequency isolation type high voltage direct current power taking, is characterized in that, comprising: the first inverter circuit, high frequency transformer, rectification circuit, the second inverter circuit, signals collecting and treatment circuit, digital control chip and drive circuit, wherein:
Described the first inverter circuit comprises inductive branch and the first bridge arm unit, and described inductive branch and described the first bridge arm unit are in parallel with direct-current input power supplying respectively;
Described rectification circuit comprises the second bridge arm unit, the 3rd bridge arm unit and output capacitance in parallel;
The input side of described high frequency transformer is connected with described inductive branch mid point, described the first bridge arm unit mid point respectively, and the outlet side of described high frequency transformer is connected with described the second bridge arm unit mid point, described the 3rd bridge arm unit mid point respectively;
Described the second inverter circuit comprises the 4th bridge arm unit in parallel with described output capacitance respectively and the 5th bridge arm unit, and described the 4th bridge arm unit mid point and described the 5th bridge arm unit mid point form the output of described supply unit;
Wherein, described the first bridge arm unit, described the second bridge arm unit, described the 3rd bridge arm unit, described the 4th bridge arm unit and described the 5th bridge arm unit consist of two power switch pipes respectively;
Described signals collecting and treatment circuit are connected between described the first inverter circuit and described digital control chip;
Described drive circuit is connected between described digital control chip and described the first bridge arm unit, described the second bridge arm unit, described the 3rd bridge arm unit, described the 4th bridge arm unit and the power switch pipe of described the 5th bridge arm unit.
2. supply unit according to claim 1, is characterized in that, described inductive branch comprises the electric capacity of two series connection.
3. supply unit according to claim 1, is characterized in that, described power switch pipe is metal-oxide-semiconductor, IGBT pipe, carborundum SiC power device or IGCT controllable type device for power switching.
4. supply unit according to claim 1, is characterized in that, also comprises:
Accessory power supply is described digital control chip and described drive circuitry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320629846.2U CN203537235U (en) | 2013-10-12 | 2013-10-12 | High frequency isolated type high voltage DC power taking supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320629846.2U CN203537235U (en) | 2013-10-12 | 2013-10-12 | High frequency isolated type high voltage DC power taking supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203537235U true CN203537235U (en) | 2014-04-09 |
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ID=50423406
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320629846.2U Expired - Lifetime CN203537235U (en) | 2013-10-12 | 2013-10-12 | High frequency isolated type high voltage DC power taking supply unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203537235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116599237A (en) * | 2023-07-17 | 2023-08-15 | 深圳市高斯宝电气技术有限公司 | High-frequency isolation circuit for power grid side of energy storage inverter |
-
2013
- 2013-10-12 CN CN201320629846.2U patent/CN203537235U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116599237A (en) * | 2023-07-17 | 2023-08-15 | 深圳市高斯宝电气技术有限公司 | High-frequency isolation circuit for power grid side of energy storage inverter |
| CN116599237B (en) * | 2023-07-17 | 2023-10-17 | 深圳市高斯宝电气技术有限公司 | High-frequency isolation circuit for power grid side of energy storage inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 4th Floor, Block A, Incubation Building, No. 7 Fengxian Middle Road, Haidian District, Beijing 100094 Patentee after: Beijing Suoying Electric Technology Co.,Ltd. Address before: Floor 5, Block A, Zone 1, Modern Enterprise Accelerator, No. 3, Yongjie North Road, Haidian District, Beijing, 100094 Patentee before: BEIJING SOARING ELECTRIC TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
|
| CX01 | Expiry of patent term |