CN213305026U - Three-phase off-grid inverter of mobile energy storage power supply - Google Patents
Three-phase off-grid inverter of mobile energy storage power supply Download PDFInfo
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- CN213305026U CN213305026U CN202022198766.9U CN202022198766U CN213305026U CN 213305026 U CN213305026 U CN 213305026U CN 202022198766 U CN202022198766 U CN 202022198766U CN 213305026 U CN213305026 U CN 213305026U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000001939 inductive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a three-phase off-grid inverter of portable energy storage power supply, include: boost circuit, inverter circuit, output switch circuit, load detection circuit and DSP chip, wherein, input power supply is connected to boost circuit's input, inverter circuit's input is connected to boost circuit's output, output switch circuit is connected to inverter circuit's output, a contravariant module is constituteed to boost circuit and inverter circuit, two at least contravariant module parallel access output switch circuit, load is connected to output switch circuit's output, output switch circuit is connected to the DSP chip, boost circuit and inverter circuit are still connected to the DSP chip, load is connected to load detection circuit's input, the DSP chip is connected to load detection circuit's output. The inverter can improve the power supply stability and safety of the mobile energy storage power supply.
Description
Technical Field
The utility model relates to a mobile energy storage power field particularly, relates to a three-phase of portable energy storage power is from net dc-to-ac converter.
Background
In some areas without electricity, an off-grid energy storage system is more economical and environment-friendly than an oil engine power generation system, and compared with a grid-connected system, the off-grid system is more complex, the load, the power consumption and the local weather conditions of users need to be considered, particularly the load conditions are diversified, and the off-grid energy storage system has inductive loads like a water pump and resistive loads like an electric furnace. The mobile energy storage power supply is mainly applied to important load power supply: the mobile energy storage power supply on the market has the problems of insufficient stability, low safety degree and the like when used for alternating current output, mainly because the inductive load can generate back electromotive force voltage at the moment of connecting or disconnecting the power supply, the peak value of the voltage is far greater than the voltage value which can be borne by the inverter, the instantaneous overload of the inverter is easily caused, and the service life of the mobile energy storage power supply is influenced. Therefore, how to improve the power supply stability and safety of the mobile energy storage power supply becomes a technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the above-mentioned prior art or the correlation technique at least, provide a three-phase of portable energy storage power from net dc-to-ac converter, can promote portable energy storage power's power supply stability and security.
The utility model discloses a realize through following technical scheme: a three-phase off-grid inverter for a mobile energy storage power supply, comprising: the device comprises a booster circuit, an inverter circuit, an output switch circuit, a load detection circuit and a DSP (Digital Signal Processing) chip, wherein the input end of the booster circuit is connected with an input power supply, the output end of the booster circuit is connected with the input end of the inverter circuit, the output end of the inverter circuit is connected with the output switch circuit to provide three-phase alternating current output for the output switch circuit, the booster circuit and the inverter circuit form an inverter module, at least two inverter modules are connected in parallel to the output switch circuit, the output end of the output switch circuit is connected with a load through the load detection circuit, a switch device in the output switch circuit is switched on and off according to a control instruction sent by the DSP chip, the DSP chip is also connected with the booster circuit and the inverter circuit, the input end of the load detection circuit is connected with the load, the output end of the load detection circuit is connected with the DSP chip, the load detection circuit detects the type of, and if the load is determined to be the resistive load, the DSP chip controls the output switch circuit to simultaneously switch on a plurality of inversion modules to supply power to the load, and if the load is determined to be the resistive load, one inversion module is switched on to supply power to the load.
According to the above technical solution of the present invention, preferably, further include: and the display device is connected to the DSP chip and used for displaying the load information and outputting the on-off condition of the switch circuit.
According to the above technical solution of the present invention, preferably, further include: and a BMS (Battery Management System) chip connected to the input power supply, the boost circuit and the DSP chip.
According to the above technical scheme of the utility model, preferably, load detection circuit is connected to the DSP chip through analog-to-digital converter.
The utility model discloses the beneficial effect who gains includes at least: the boost circuit realizes the voltage boost of the battery input, the inverter circuit converts the direct current of the battery into alternating current, the control of the boost circuit and the inverter circuit is completed by the DSP chip, and the DSP chip also determines the load type (inductive load or resistive load) according to the load detection circuit to adjust the output switch circuit so as to switch on the inverter modules with the preset number, thereby reducing the impact of the reverse electromotive force of the load on the power supply. The display device is connected to the DSP chip, and load information and electric quantity information are displayed in real time, so that the usability of the equipment is improved.
Drawings
Fig. 1 shows a schematic structural diagram of a three-phase off-grid inverter of a mobile energy storage power supply according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1, the utility model provides a pair of three-phase of portable energy storage power supply is from net dc-to-ac converter, include: the device comprises a booster circuit 1, an inverter circuit 2, an output switch circuit 3, a load detection circuit 4 and a DSP chip 5, wherein the input end of the booster circuit is connected with an input power supply 6, the output end of the booster circuit is connected with the input end of the inverter circuit, the output end of the inverter circuit is connected with the output switch circuit, three-phase alternating current output is provided for the output switch circuit, the booster circuit and the inverter circuit form an inverter module 7, at least two inverter modules are connected in parallel to the output switch circuit, the output end of the output switch circuit is connected with a load 9, a switch device in the output switch circuit is switched on and off according to a control instruction sent by the DSP chip, the DSP chip is also connected with the booster circuit and the inverter circuit, the input end of the load detection circuit is connected with the load, the output end of the load detection circuit is connected with the DSP chip, the load type is detected after the load detection circuit is switched on, if the load is determined to be an inductive load, the DSP chip controls the output switch circuit to simultaneously switch on the plurality of inversion modules to supply power to the load, and if the load is determined to be a resistive load, one inversion module is switched on to supply power to the load.
According to the above embodiment, preferably, the method further comprises: and the display device 8 is connected to the DSP chip and is used for displaying the load information and the on-off condition of the output switch circuit.
According to the above embodiment, preferably, the method further comprises: and the BMS chip is connected to the input power supply, the booster circuit and the DSP chip.
According to the above embodiments, preferably, the load detection circuit is connected to the DSP chip through an analog-to-digital converter.
In summary, the boost circuit boosts the voltage input by the battery, the inverter circuit converts the direct current of the battery into alternating current, the control of the boost circuit and the inverter circuit is completed by the DSP chip, and the DSP chip further adjusts the output switch circuit according to the load type (inductive load or resistive load) determined by the load detection circuit to connect a predetermined number of inverter modules, so as to reduce the impact of the load back electromotive force on the power supply. The display device is connected to the DSP chip, and load information and electric quantity information are displayed in real time, so that the usability of the equipment is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a three-phase off-grid inverter of portable energy storage power supply which characterized in that includes:
the power supply comprises a booster circuit, an inverter circuit, an output switch circuit, a load detection circuit and a DSP chip, wherein the input end of the booster circuit is connected with an input power supply, the output end of the booster circuit is connected with the input end of the inverter circuit, the output end of the inverter circuit is connected with the output switch circuit, three-phase alternating current output is provided for the output switch circuit, the booster circuit and the inverter circuit form an inverter module, at least two inverter modules are connected in parallel to be connected into the output switch circuit, the output end of the output switch circuit is connected with the load through the load detection circuit, a switch device in the output switch circuit is switched on and off according to a control instruction sent by the DSP chip, the input end of the load detection circuit is connected with the load, and the output end of the load detection circuit is connected with the DSP chip.
2. The three-phase off-grid inverter of a mobile energy storage power source of claim 1, further comprising:
and the display device is connected to the DSP chip and is used for displaying the load information and the on-off condition of the output switch circuit.
3. The three-phase off-grid inverter of a mobile energy storage power source of claim 1, further comprising:
a BMS chip connected to the input power supply, the boosting circuit, and the DSP chip.
4. The three-phase off-grid inverter of a mobile energy storage power supply of claim 1, wherein the load detection circuit is connected to the DSP chip through an analog-to-digital converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022198766.9U CN213305026U (en) | 2020-09-30 | 2020-09-30 | Three-phase off-grid inverter of mobile energy storage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022198766.9U CN213305026U (en) | 2020-09-30 | 2020-09-30 | Three-phase off-grid inverter of mobile energy storage power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213305026U true CN213305026U (en) | 2021-05-28 |
Family
ID=76010954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022198766.9U Expired - Fee Related CN213305026U (en) | 2020-09-30 | 2020-09-30 | Three-phase off-grid inverter of mobile energy storage power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213305026U (en) |
-
2020
- 2020-09-30 CN CN202022198766.9U patent/CN213305026U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210528 |
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| CF01 | Termination of patent right due to non-payment of annual fee |