CN202435113U - Inverter auxiliary power supply electricity-getting circuit - Google Patents
Inverter auxiliary power supply electricity-getting circuit Download PDFInfo
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- CN202435113U CN202435113U CN 201120481579 CN201120481579U CN202435113U CN 202435113 U CN202435113 U CN 202435113U CN 201120481579 CN201120481579 CN 201120481579 CN 201120481579 U CN201120481579 U CN 201120481579U CN 202435113 U CN202435113 U CN 202435113U
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- power supply
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Abstract
An inverter auxiliary power supply electricity-getting circuit of the utility model comprises a rectification circuit, a first diode, a second diode, a third diode, a fourth diode, a first capacitor unit, a second capacitor unit and a DC bus input end; wherein the first and second diodes prevent a high voltage inputted to the DC bus input end from being added on the first capacitor unit, and the third and fourth diodes prevent a DC voltage outputted after an AC voltage inputted from a power grid passes through the rectification circuit and the first capacitor unit from charging the DC bus input end. Therefore, the inverter auxiliary power supply electricity-getting circuit of the utility model enables the power grid and battery mutually limited electricity-getting mode of making an AC power grid input pass through the rectification circuit and then in parallel connection with the DC bus input to be realized, the circuit design of a device is simple, the capacitor use number is small, and the production cost is low.
Description
Technical field
The utility model relates to inverter, more particularly, relates to a kind of inverter accessory power supply power-supply circuit.
Background technology
The way to take power of inverter accessory power supply comprises: electrical network power taking, battery power taking and electrical network and battery mutual top power taking.
Wherein, The mutual top of electrical network and battery way to take power is meant that line voltage passes through the voltage that obtains behind the rectifier bridge and compares with the battery input voltage; When rectifier bridge output voltage during greater than the battery input voltage; The output voltage of inverter accessory power supply power-supply circuit equates with the rectifier bridge output voltage, and when rectifier bridge output voltage during less than the battery input voltage, the output voltage of inverter accessory power supply power-supply circuit equates with the battery input voltage.
Inverter accessory power supply power-supply circuit for adopting electrical network and battery mutual top power taking comprises electrical network power taking unit and battery power taking unit.The alternating voltage effective value of electrical network input is littler than the dc voltage value of dc bus input; And the interchange pulse ripple of alternating current behind rectification circuit of electrical network input is bigger; Therefore the designing requirement of grid side ac filter electric capacity is that capacity is big and withstand voltage little in the electrical network power taking unit, and the designing requirement of battery side dc filter capacitor is that capacity is little and withstand voltage big in the battery power taking unit.The difficult point of the mutual top of electrical network and battery way to take power is: the parallel connection of electrical network power taking unit and battery power taking unit that realizes satisfying above-mentioned capacitor design is very difficult.Existing solution is the parallel connection that the series and parallel of the multiple electric capacity of use in circuit is realized electrical network power taking unit and battery power taking unit.Like this, make that the complex design, production cost of inverter accessory power supply power-supply circuit are high.
The utility model content
The utility model is to the existing above-mentioned defective that adopts the inverter accessory power supply power-supply circuit of electrical network and the mutual top of battery way to take power, provides that a kind of simplicity of design, production cost are low, the inverter accessory power supply power-supply circuit of employing electrical network and the mutual top of battery way to take power.
The utility model solves the technical scheme that its technical problem adopted: a kind of inverter accessory power supply power-supply circuit is provided, comprises rectification circuit, first diode, second diode, first capacitor cell, second capacitor cell and dc bus input; The positive pole of first diode connects the output head anode of rectification circuit; The negative pole of second diode connects the negative pole of output end of rectification circuit; First capacitor cell is connected in parallel on the rectification circuit two ends; Second capacitor cell, one end connects the negative pole of first diode, and the other end connects the anodal and ground connection of second diode; The dc bus input anode is connected in the node of first diode and second capacitor cell, and negative pole is connected in the node of second diode and second capacitor cell;
Inverter accessory power supply power-supply circuit also comprises the 3rd diode and the 4th diode, and wherein, the 3rd diode cathode connects the dc bus input anode, and negative pole is connected in the node of first diode and second capacitor cell; The 4th diode cathode connects the dc bus input cathode, and positive pole is connected in the node of second diode and second capacitor cell;
The link of second capacitor cell and first diode is a voltage output end.
Preferably, first capacitor cell comprises first electric capacity and second electric capacity of series connection.
Further preferably, second capacitor cell comprises the 3rd electric capacity and the 4th electric capacity of series connection.
The inverter accessory power supply power-supply circuit of the utility model, rectification circuit are three-phase bridge rectification circuit or are single phase rectifier circuit.
The inverter accessory power supply power-supply circuit of the utility model has following beneficial effect: first diode and second diode have stoped the high pressure of dc bus input input to be added on first capacitor cell; The 3rd diode and the 4th diode have stoped the direct voltage of exporting behind the alternating current pressuring meridian rectification circuit of electrical network input and first capacitor cell to give the charging of dc bus input; Realized AC network input electrical network and the battery mutual way to take power that push up parallelly connected behind rectification circuit with the dc bus input; And circuit design is simple; The electric capacity quantity of using is few, and production cost is low.
Description of drawings
Fig. 1 is the circuit diagram of inverter accessory power supply power-supply circuit first embodiment of the utility model;
Fig. 2 is the circuit diagram of inverter accessory power supply power-supply circuit second embodiment of the utility model;
Fig. 3 is the circuit diagram of inverter accessory power supply power-supply circuit the 3rd embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the inverter accessory power supply power-supply circuit of the utility model is done further explanation and explanation.The inverter accessory power supply power-supply circuit of the utility model is applicable to photovoltaic DC-to-AC converter and battery energy storage inverter.
Fig. 1 is the circuit diagram of inverter accessory power supply power-supply circuit first embodiment of the utility model; As shown in Figure 1, the inverter accessory power supply power-supply circuit of the utility model comprises rectification circuit, the first diode D1, the second diode D2, the first capacitor cell C100, the second capacitor cell C200 and dc bus input 100.Wherein, the positive pole of the first diode D1 connects the output head anode of rectification circuit; The negative pole of the second diode D2 connects the negative pole of output end of rectification circuit; The first capacitor cell C100 is connected in parallel on the rectification circuit two ends; The second capacitor cell C200, one end connects the negative pole of the first diode D1, and the other end connects the anodal and ground connection of the second diode D2; The dc bus input anode is connected in the node of the first diode D1 and the second capacitor cell C200, and negative pole is connected in the node of the second diode D2 and the second capacitor cell C200; The inverter accessory power supply power-supply circuit of the utility model also comprises the 3rd diode D3 and the 4th diode D4; Wherein, The anodal dc bus input anode V+ that connects of the 3rd diode D3, negative pole is connected in the node of the said first diode D1 and the second capacitor cell C200; The 4th diode D4 negative pole connects dc bus input cathode V-, and positive pole is connected in the node of the second diode D2 and second capacitor cell; The link of the second capacitor cell C200 and the first diode D1 is voltage output end Vdc.
In the present embodiment, the three-phase bridge rectification circuit of rectification circuit for constituting by 6 rectifier diode D5-D10, as shown in Figure 1, it is sinusoidal after the three-phase bridge rectification circuit rectification, to export unidirectional pulse from the alternating current of electrical network output.The first capacitor cell C100 that is connected in parallel on the three-phase bridge rectification circuit output is used to reduce the sinusoidal ripple coefficient of after the three-phase bridge rectification circuit rectification, exporting of unidirectional pulse.
In the present embodiment; The output head anode of three-phase bridge rectification circuit is connected with negative pole with the positive pole of dc bus input with the second diode D2 through the first diode D1 respectively with negative pole, makes the high pressure of dc bus input input can't be added on the first capacitor cell C100.The anodal V+ of dc bus input 100 and negative pole V-are connected in the node of the first diode D1 and the second capacitor cell C200 respectively through the 3rd diode D3 and the 4th diode D4; And the node of second diode D2 and the second capacitor cell C200, the 3rd diode D3 and the 4th diode D4 have stoped the direct voltage of exporting behind the alternating current pressuring meridian rectification circuit of electrical network input and the first capacitor cell C100 to give the charging of dc bus input.The existence of first to fourth diode D1 to D4 makes alternating current-direct current two-way input voltage isolate each other; Thereby need in circuit, not add more series and parallel electric capacity and realize the parallelly connected of rectifier bridge and dc bus input; Only comprise the first capacitor cell C100 and the second capacitor cell C200 that are used for filtering in the circuit; Circuit is simple, and production cost is low.
In the present embodiment; Line voltage is through the voltage that the three-phase bridge rectification circuit rectification obtains compare with the battery input voltage (the dc bus input among the figure just is meant battery input); When three-phase bridge rectification circuit output voltage during greater than the battery input voltage; The first diode D1 and the second diode D2 conducting, the 3rd diode D3 and the 4th diode D4 end, and at this moment the voltage output end Vdc output voltage of inverter accessory power supply power-supply circuit equates with the three-phase bridge rectification circuit output voltage; When three-phase bridge rectification circuit output voltage during less than the battery input voltage; The first diode D1 and the second diode D2 end; The 3rd diode D3 and the 4th diode D4 conducting, at this moment the voltage output end Vdc output voltage of inverter accessory power supply power-supply circuit equates with the battery input voltage.
Fig. 2 is the circuit diagram of inverter accessory power supply power-supply circuit second embodiment of the utility model; As shown in Figure 2; In second embodiment of the utility model, the first capacitor cell C100 comprises first capacitor C 1 of series connection and the 3rd capacitor C 3 and the 4th capacitor C 4 that second capacitor C, 2, the second capacitor cell C200 comprise series connection; All the other situation are identical with first embodiment, repeat no more at this.
In the present embodiment; The capacity and the voltage of first capacitor C 1 and second capacitor C 2; Select according to the alternating voltage effective value of electrical network input, the sinusoidal ripple coefficient size of after the rectifier bridge rectification, exporting of unidirectional pulse; Generally speaking, require grid side ac filter electric capacity (being first capacitor C 1 and second capacitor C 2 in the present embodiment) capacity big and voltage (withstand voltage) is little; The capacity and the voltage of the 3rd capacitor C 3 and the 4th capacitor C 4; Select according to the dc voltage value of dc bus input input and the dc voltage value of after above-mentioned rectification and filtering, exporting; Generally speaking, require the little and voltage (withstand voltage) of battery side dc filter capacitor (being the 3rd capacitor C 3 and the 4th capacitor C 4 in the present embodiment) capacity big.
For example; The alternating voltage effective value of electrical network input is 270V; The ripple coefficient of considering the unidirectional pulse sine of after the rectifier bridge rectification, exporting is big, and the capacity of selecting first capacitor C 1 and second capacitor C 2 is that 1000 μ F, voltage are 400V, and the capacity after both series connection is that 500 μ F, voltage are 800V.The dc voltage value of after rectification and filtering, exporting is about 381V.And the direct voltage scope of dc bus input input is 450V-1000V, and the direct current ripple coefficient is little, and the capacity of selecting the 3rd capacitor C 3 and the 4th capacitor C 4 is 0.47 μ F, and voltage is 630V, and the capacity after both series connection is that 0.265 μ F, voltage are 1260V.
In other embodiment of the utility model; Can select one or more to have the electric capacity of suitable capacity and magnitude of voltage (withstand voltage) according to the alternating voltage effective value of reality input, the sinusoidal ripple coefficient size of after the rectifier bridge rectification, exporting of unidirectional pulse; Through series connection or the parallelly connected needs of realizing filtering, to constitute the first capacitor cell C100; Can select one or more electric capacity through series connection or the parallelly connected needs of realizing filtering, to constitute the second capacitor cell C200 according to the dc voltage value of the actual input of dc bus input and the dc voltage value of after above-mentioned rectification and filtering, exporting with suitable capacity and magnitude of voltage (withstand voltage).
Fig. 3 is the circuit diagram of inverter accessory power supply power-supply circuit the 3rd embodiment of the utility model; As shown in Figure 3; In the 3rd embodiment of the utility model, the single phase rectifier circuit of the rectification circuit of inverter accessory power supply power-supply circuit for constituting by 4 rectifier diode D11-D14.All the other situation are identical with second embodiment, repeat no more at this.
In concrete implementation process, can carry out suitable improvement, to adapt to the specific requirement of concrete condition to inverter accessory power supply power-supply circuit according to the utility model.Therefore be appreciated that the embodiment according to the utility model just plays exemplary role, and be different from the protection range that limits the utility model.
Claims (5)
1. inverter accessory power supply power-supply circuit; Comprise rectification circuit, first diode (D1), second diode (D2), first capacitor cell (C100), second capacitor cell (C200) and dc bus input (100); It is characterized in that the positive pole of said first diode (D1) connects the output head anode of said rectification circuit; The negative pole of said second diode (D2) connects the negative pole of output end of said rectification circuit; Said first capacitor cell (C100) is connected in parallel on said rectification circuit two ends; Said second capacitor cell (C200) end connects the negative pole of said first diode (D1), and the other end connects the anodal and ground connection of said second diode (D2); Said dc bus input anode (V+) is connected in the node of said first diode (D1) and second capacitor cell (C200), and negative pole (V-) is connected in the node of said second diode (D2) and second capacitor cell (C200);
Said inverter accessory power supply power-supply circuit also comprises the 3rd diode (D3) and the 4th diode (D4); Wherein, the anodal connection of said the 3rd diode (D3) dc bus input anode (V+), negative pole are connected in the node of said first diode (D1) and second capacitor cell (C200); Said the 4th diode (D4) negative pole connects dc bus input cathode (V-), and positive pole is connected in the node of said second diode (D2) and second capacitor cell;
Said second capacitor cell (C200) is voltage output end (Vdc) with the link of said first diode (D1).
2. inverter accessory power supply power-supply circuit according to claim 1 is characterized in that, said first capacitor cell comprises first electric capacity (C1) and second electric capacity (C2) of series connection.
3. inverter accessory power supply power-supply circuit according to claim 1 and 2 is characterized in that, said second capacitor cell comprises the 3rd electric capacity (C3) and the 4th electric capacity (C4) of series connection.
4. inverter accessory power supply power-supply circuit according to claim 1 is characterized in that said rectification circuit is a three-phase bridge rectification circuit.
5. inverter accessory power supply power-supply circuit according to claim 1 is characterized in that said rectification circuit is a single phase rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120481579 CN202435113U (en) | 2011-11-28 | 2011-11-28 | Inverter auxiliary power supply electricity-getting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120481579 CN202435113U (en) | 2011-11-28 | 2011-11-28 | Inverter auxiliary power supply electricity-getting circuit |
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| CN202435113U true CN202435113U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120481579 Expired - Lifetime CN202435113U (en) | 2011-11-28 | 2011-11-28 | Inverter auxiliary power supply electricity-getting circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037833A (en) * | 2013-03-07 | 2014-09-10 | 现代自动车株式会社 | Power supply system and method for charging battery of vehicle |
| CN104506047A (en) * | 2015-01-20 | 2015-04-08 | 深圳市英威腾电气股份有限公司 | Operation method of inverter power supply system and inverter power supply system |
| CN105099215A (en) * | 2014-05-21 | 2015-11-25 | 济南芯驰能源科技有限公司 | Aircraft ground miniaturization power supply suitable for multiple power supply modes |
| CN108336912A (en) * | 2017-01-20 | 2018-07-27 | 深圳耐斯特思新能源科技有限公司 | One kind is about photovoltaic energy storage inverter SPS alternating current-direct currents electricity getting device and method |
| CN109361239A (en) * | 2018-12-05 | 2019-02-19 | 江苏中导电力有限公司 | Integral control system is filled in light storage |
-
2011
- 2011-11-28 CN CN 201120481579 patent/CN202435113U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037833A (en) * | 2013-03-07 | 2014-09-10 | 现代自动车株式会社 | Power supply system and method for charging battery of vehicle |
| CN104037833B (en) * | 2013-03-07 | 2018-10-23 | 现代自动车株式会社 | For the power supply system and method for vehicle battery charging |
| CN105099215A (en) * | 2014-05-21 | 2015-11-25 | 济南芯驰能源科技有限公司 | Aircraft ground miniaturization power supply suitable for multiple power supply modes |
| CN104506047A (en) * | 2015-01-20 | 2015-04-08 | 深圳市英威腾电气股份有限公司 | Operation method of inverter power supply system and inverter power supply system |
| CN108336912A (en) * | 2017-01-20 | 2018-07-27 | 深圳耐斯特思新能源科技有限公司 | One kind is about photovoltaic energy storage inverter SPS alternating current-direct currents electricity getting device and method |
| CN109361239A (en) * | 2018-12-05 | 2019-02-19 | 江苏中导电力有限公司 | Integral control system is filled in light storage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN HOPEWIND ELECTRIC CO., LTD. Free format text: FORMER NAME: SHENZHEN HEWANG ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518055 Guangdong city in Shenzhen Province, Nanshan District, Xili Town Dragon Village Second Industrial Zone 5 Patentee after: Shenzhen's standing grain hopes electric limited company Address before: 518055 Guangdong city in Shenzhen Province, Nanshan District, Xili Town Dragon Village Second Industrial Zone 5 Patentee before: Shenzhen Hewang Electric Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili Guan Long Village Second Industrial Zone No. 5 building 1-3 Patentee after: Shenzhen's standing grain hopes electric limited company Address before: 518055 Guangdong city in Shenzhen Province, Nanshan District, Xili Town Dragon Village Second Industrial Zone 5 Patentee before: Shenzhen's standing grain hopes electric limited company |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |
|
| CX01 | Expiry of patent term |