CN203352473U - Inverter three-phase PFC-BOOST series-parallel connection output device - Google Patents
Inverter three-phase PFC-BOOST series-parallel connection output device Download PDFInfo
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- CN203352473U CN203352473U CN 201320374902 CN201320374902U CN203352473U CN 203352473 U CN203352473 U CN 203352473U CN 201320374902 CN201320374902 CN 201320374902 CN 201320374902 U CN201320374902 U CN 201320374902U CN 203352473 U CN203352473 U CN 203352473U
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Abstract
The utility model discloses an inverter three-phase PFC-BOOST series-parallel connection output device in the field of electrical equipment. The inverter three-phase PFC-BOOST series-parallel connection output device comprises three phase transformation circuits which are connected in parallel and then connected onto a positive bus, a negative bus and a neutral wire. The three phase transformation circuits have a same structure. Each signal phase transformation circuit comprises an upper positive circuit and a lower negative circuit which are serially connected. The upper positive circuit comprises a silicon controlled rectifier, an inductor, a Hall current sensor and a diode which are serially connected successively. The structure of the lower negative circuit is the same as the structure of the upper positive circuit. A signal phase input end is led from the connection position of the two silicon controlled rectifiers on the upper positive circuit and the lower negative circuit. The diode input end on the upper positive circuit and the diode input end on the lower negative circuit are serially connected through two IGBTs which are serially connected. A signal phase neutral wire is led from the two IGBTs. An electrolytic capacitor is connected between the positive bus and the neutral wire and between the negative bus and the neutral wire separately. The inverter three-phase PFC-BOOST series-parallel connection output device of the utility model has advantages of simple structure, convenient utilization, stable and reliable operation and low cost, and can be used in the field of power transmission.
Description
Technical field
The utility model relates to a kind of inverter, particularly a kind of inverter connection in series-parallel output device.
Background technology
The inverter power conversion power generation system is a development trend in current electric power application, and its great advantage is to convert grid power to pure sine-wave power output, and inverter is exactly the core of whole system.At present, the inverter from several KW to hundreds of KW has been widely used in the electric power application system all trades and professions, and in recent years, the power equipment application has obtained development at full speed, in the urgent need to the inverter of the design of inverter producer and production high-efficiency high-power grade.Be subject to the restriction of power electronic device manufacturing process, the design of at present middle high-power inverter mostly adopts traditional rectification step-up method, and conversion efficiency has much room for improvement, to the also to be improved and reduction of pollution of electrical network.
For inverter main way of output that adopts diode rectification and metal-oxide-semiconductor to boost in the three-phase input rectifying boosts process, to reach the requirement of inverter power output: its advantage is that circuit is simple at present; Shortcoming is there is no power factor emendation function, and concentrated boosting rectifier control is had relatively high expectations to device, easily causes the imbalance of three-phase input current.
The utility model content
The purpose of this utility model is to provide a kind of three-phase PFC-BOOST connection in series-parallel output device of inverter, makes that it is simple in structure, easy to use, stable and reliable operation and with low cost.
The purpose of this utility model is achieved in that a kind of three-phase PFC-BOOST connection in series-parallel output device of inverter, be connected to the translation circuit on positive and negative bus and the neutral line after comprising parallel three phase, described three-phase translation circuit structure is identical, each single-phase translation circuit comprises the upper right way be chained together, the Xia Fu road, the described upper right way comprises the controllable silicon be chained together successively, inductance, Hall current sensor and diode, described lower negative line structure is identical with the upper right way, on described upper right way He Xiafu road, single-phase input is drawn in two controllable silicon junctions, on the described upper right way on diode input Yu Xiafu road between the diode input the two IGBT pipes through being cascaded be connected, draw the single-phase neutral line between described two IGBT pipes, between described positive bus and the neutral line, be connected with respectively an electrochemical capacitor between negative bus and the neutral line.
As improvement of the present utility model, the one-way SCR that described controllable silicon is 40A/1200V.
As improvement of the present utility model, described inductance is the 50A/0.95mH inductance.
As improvement of the present utility model, the Hall current sensor that described Hall current sensor is 50A.
As improvement of the present utility model, described IGBT pipe is the single tube IGBT of 51A/900V.
As improvement of the present utility model, the fast recovery diode that described diode is 75A/1200.
As improvement of the present utility model, described electrochemical capacitor is the 4700UF/450V alminium electrolytic condenser.
In the utility model, single-phase every two controllable silicon in serial connections form the brachium pontis of positive-negative half-cycle up and down of every phase full-controlled rectifier, two inductance are series at respectively on the rectifying bridge arm of every phase, electric power after rectification is carried out to energy storage filtering, after two Hall current sensors are serially connected with inductance respectively, realize that real-time detection and the PFC of electric current precisely controls; Every two IGBT pipes are composed in series the positive and negative control arm of every phase BOOST booster circuit, realization converts commutating voltage to inversion required positive and negative BUS voltage, and two diodes are series at respectively on the positive and negative bus of every phase, after exporting by diode, again by three groups of output-parallels together, two electrochemical capacitors carry out smothing filtering to the voltage of parallel connection output.The utility model is comprised of three groups of PFC rectification boosting circuits and two electrolytic capacitor filters, three-phase alternating-current supply R phase, the S phase, T accesses respectively in corresponding rectification circuit mutually, after every silicon controlled rectifier in mutually, receive respectively the BOOST booster circuit two ends of each phase, drive respectively to organize after IGBT boosts through pulsewidth and be connected in parallel, obtaining galvanic current after electrochemical capacitor filtering presses, meet the requirement of follow-up inverter circuit, compared with prior art, the beneficial effects of the utility model are: the utility model is simple in structure, easy to use, stable and reliable operation, and with low cost, every phase PFC rectification boosting circuit is exactly one and independently converts module, be conducive to a plurality of independent conversion module output in parallel from now on and reach more powerful requirement.The utility model can be used for the electric power transfer field.
The accompanying drawing explanation
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
The three-phase PFC-BOOST connection in series-parallel output device of a kind of inverter as shown in Figure 1, be connected to the translation circuit on positive and negative bus and the neutral line after comprising parallel three phase, three-phase translation circuit structure is identical, each single-phase translation circuit comprises the upper right way be chained together, the Xia Fu road, the upper right way comprises the controllable silicon be chained together successively, inductance, Hall current sensor and diode, lower negative line structure is identical with the upper right way, on upper right way He Xiafu road, single-phase input is drawn in two controllable silicon junctions, on the upper right way on diode input Yu Xiafu road between the diode input the two IGBT pipes through being cascaded be connected, draw the single-phase neutral line between two IGBT pipes, between positive bus and the neutral line, be connected with respectively an electrochemical capacitor between negative bus and the neutral line, the one-way SCR that controllable silicon is 40A/1200V, inductance is the 50A/0.95mH inductance, the Hall current sensor that Hall current sensor is 50A, the IGBT pipe is the single tube IGBT of 51A/900V, the fast recovery diode that diode is 75A/1200, electrochemical capacitor is the 4700UF/450V alminium electrolytic condenser.
In the utility model, single-phase every two controllable silicon in serial connections form the brachium pontis of positive-negative half-cycle up and down of every phase full-controlled rectifier, two inductance are series at respectively on the rectifying bridge arm of every phase, electric power after rectification is carried out to energy storage filtering, after two Hall current sensors are serially connected with inductance respectively, realize that real-time detection and the PFC of electric current precisely controls; Every two IGBT pipes are composed in series the positive and negative control arm of every phase BOOST booster circuit, realization converts commutating voltage to inversion required positive and negative BUS voltage, and two diodes are series at respectively on the positive and negative bus of every phase, after exporting by diode, again by three groups of output-parallels together, two electrochemical capacitors carry out smothing filtering to the voltage of parallel connection output.The utility model is comprised of three groups of PFC rectification boosting circuits and two electrolytic capacitor filters, three-phase alternating-current supply R phase, S phase, T access respectively in corresponding rectification circuit mutually, after every silicon controlled rectifier in mutually, receive respectively the BOOST booster circuit two ends of each phase, drive respectively to organize after IGBT boosts through pulsewidth and be connected in parallel, obtain galvanic current and press after electrochemical capacitor filtering, meet the requirement of follow-up inverter circuit.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection range of the present utility model.
Claims (7)
1. the three-phase PFC-BOOST connection in series-parallel output device of an inverter, it is characterized in that, be connected to the translation circuit on positive and negative bus and the neutral line after comprising parallel three phase, described three-phase translation circuit structure is identical, each single-phase translation circuit comprises the upper right way be chained together, the Xia Fu road, the described upper right way comprises the controllable silicon be chained together successively, inductance, Hall current sensor and diode, described lower negative line structure is identical with the upper right way, on described upper right way He Xiafu road, single-phase input is drawn in two controllable silicon junctions, on the described upper right way on diode input Yu Xiafu road between the diode input the two IGBT pipes through being cascaded be connected, draw the single-phase neutral line between described two IGBT pipes, between described positive bus and the neutral line, be connected with respectively an electrochemical capacitor between negative bus and the neutral line.
2. the three-phase PFC-BOOST connection in series-parallel output device of a kind of inverter according to claim 1, is characterized in that the one-way SCR that described controllable silicon is 40A/1200V.
3. the three-phase PFC-BOOST connection in series-parallel output device of a kind of inverter according to claim 1 and 2, is characterized in that, described inductance is the 50A/0.95mH inductance.
4. the three-phase PFC-BOOST connection in series-parallel output device of a kind of inverter according to claim 1 and 2, is characterized in that the Hall current sensor that described Hall current sensor is 50A.
5. the three-phase PFC-BOOST connection in series-parallel output device of a kind of inverter according to claim 1 and 2, is characterized in that, described IGBT pipe is the single tube IGBT of 51A/900V.
6. the three-phase PFC-BOOST connection in series-parallel output device of a kind of inverter according to claim 1 and 2, is characterized in that the fast recovery diode that described diode is 75A/1200.
7. the three-phase PFC-BOOST connection in series-parallel output device of a kind of inverter according to claim 1 and 2, is characterized in that, described electrochemical capacitor is the 4700UF/450V alminium electrolytic condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320374902 CN203352473U (en) | 2013-06-27 | 2013-06-27 | Inverter three-phase PFC-BOOST series-parallel connection output device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320374902 CN203352473U (en) | 2013-06-27 | 2013-06-27 | Inverter three-phase PFC-BOOST series-parallel connection output device |
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| Publication Number | Publication Date |
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| CN203352473U true CN203352473U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320374902 Expired - Lifetime CN203352473U (en) | 2013-06-27 | 2013-06-27 | Inverter three-phase PFC-BOOST series-parallel connection output device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311578A (en) * | 2019-07-23 | 2019-10-08 | 重庆和诚电器有限公司 | A kind of magnetic motor for motorcycle output voltage segmentation method for rectifying and pressure regulator |
-
2013
- 2013-06-27 CN CN 201320374902 patent/CN203352473U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311578A (en) * | 2019-07-23 | 2019-10-08 | 重庆和诚电器有限公司 | A kind of magnetic motor for motorcycle output voltage segmentation method for rectifying and pressure regulator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |
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| CX01 | Expiry of patent term | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: On July 14, 2023, the expiration and termination of 39 volumes and 2802 issues of the patent Number: 28-02 Volume: 39 |
|
| CU01 | Correction of utility model |