CN204407966U - A kind of intelligent recharge and discharge machine main circuit - Google Patents
A kind of intelligent recharge and discharge machine main circuit Download PDFInfo
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- CN204407966U CN204407966U CN201520098399.1U CN201520098399U CN204407966U CN 204407966 U CN204407966 U CN 204407966U CN 201520098399 U CN201520098399 U CN 201520098399U CN 204407966 U CN204407966 U CN 204407966U
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Abstract
The utility model discloses a kind of intelligent recharge and discharge machine main circuit, comprise grid side checkout gear, three-phase back-to-back converter, battery side checkout gear, polarity storage capacitor, battery, the first drive plate, the second drive plate and control board, three-phase back-to-back converter is divided into grid side, battery side, and the 3rd polar capacitor, grid side and battery side are arranged back-to-back, and are respectively provided with three-phase brachium pontis; Grid side checkout gear comprises the voltage transformer be positioned on three-phase power line, and correspondence is positioned at three grid side testing circuits in each phase line of three-phase power line, every bar grid side testing circuit comprises the first fuse, the first current transformer, mains switch, the first inductance, second current transformer of connecting successively; Battery side checkout gear comprises three battery side testing circuits, and every article of battery side testing circuit is provided with the second inductance and the 3rd current transformer of series connection mutually, and the first drive plate is connected with each IGBT switch of control board and three-phase back-to-back converter grid side; Second drive plate is connected with each IGBT switch of control board three-phase back-to-back converter battery side.
Description
Technical field
The utility model relates to integrated circuit fields, particularly relates to a kind of intelligent recharge and discharge machine main circuit.
Technical background
The development of electric automobile has become the trend of automobile industry future development, extensive electric automobile access electrical network will impact electrical network, and this makes orthodox car charge-discharge machine only realize charging/discharging function can not to meet distributed power source peak load shifting far away, alleviate the needs of electrical network burden.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of intelligent recharge and discharge machine main circuit, and it determines the operating state of three-phase back-to-back converter according to the unlike signal that control board sends, and controls discharge and recharge.
Realizing above-mentioned purpose technical scheme is: a kind of intelligent recharge and discharge machine main circuit, comprises grid side checkout gear, three-phase back-to-back converter, battery side checkout gear, polarity storage capacitor, battery, the first drive plate, the second drive plate and control board;
Described three-phase back-to-back converter is divided into grid side, battery side, and with the 3rd polar capacitor of described grid side and described battery side reverse parallel connection, described grid side and described battery side are respectively provided with three-phase brachium pontis, often mutually described brachium pontis are equipped with two IGBT switches of mutually connecting;
Described grid side checkout gear comprises the voltage transformer be positioned on three-phase power line, and correspondence is positioned at three grid side testing circuits in each phase line of described three-phase power line, grid side testing circuit described in every bar comprises first fuse of connecting successively, first current transformer, mains switch, first inductance and the second current transformer, wherein said first fuse is connected with the secondary side of described voltage transformer, described second current transformer connects with the corresponding phase brachium pontis in the grid side of described three-phase back-to-back converter, and tie point is positioned at the junction of two IGBT switches on this phase brachium pontis,
Described battery side checkout gear comprises three battery side testing circuits, battery side testing circuit described in every article is provided with the second inductance and the 3rd current transformer of series connection mutually, wherein said second inductor connects with the corresponding phase brachium pontis in the battery side of described three-phase back-to-back converter, and tie point is positioned at the junction of two IGBT switches on this phase brachium pontis;
The positive pole of described energy storage polar capacitor connects the 3rd current transformer on three battery side testing circuits of described battery side checkout gear, and negative pole connects the negative pole of the 3rd polar capacitor on described three-phase back-to-back converter;
The positive pole of described battery connects the 3rd current transformer on three battery side testing circuits of described battery side checkout gear, and negative pole connects the negative pole of the 3rd polar capacitor on described three-phase back-to-back converter;
The input of described first drive plate is connected with the first output of described control board, and the output of described first drive plate is connected with each IGBT switch of described three-phase back-to-back converter grid side;
The input of described second drive plate is connected with the second output of described control board, and the output of described second drive plate is connected with each IGBT switch of described three-phase back-to-back converter battery side.
Further, described intelligent recharge and discharge machine main circuit also comprises filter, described filter comprises three filter circuits of connecting successively, each described filtered electrical includes the first polar capacitor, second polar capacitor, 4th inductance, and first resistance, the positive pole of described first polar capacitor connects grid side measure loop corresponding on described grid side checkout gear, negative pole connects the positive pole of described second polar capacitor and described first resistance, one end of described 4th inductance connects the negative pole of described second polar capacitor, one end connects described first resistance in addition, thus make described second polar capacitor, described 4th inductance, and described first resistance forms loop,
Further; described intelligent recharge and discharge machine main circuit also comprises protective circuit; described protective circuit is in parallel with the mains switch of any one the grid side testing circuit on described grid side checkout gear, and described protective circuit comprises switch, the second fuse and second resistance of connecting successively.
Further, described control board is also connected with touch-screen.
The technical scheme of a kind of intelligent recharge and discharge machine main circuit of the present utility model, comprise grid side checkout gear 1, three-phase back-to-back converter 3, battery side checkout gear 4, polarity storage capacitor, battery, the first drive plate, the second drive plate and control board, three-phase back-to-back converter 3 is divided into grid side, battery side, and the 3rd polar capacitor, grid side and battery side are arranged back-to-back, and are respectively provided with three-phase brachium pontis; Grid side checkout gear 1 comprises the voltage transformer be positioned on three-phase power line, and correspondence is positioned at three grid side testing circuits in each phase line of three-phase power line, every bar grid side testing circuit comprises the first fuse, the first current transformer, mains switch, the first inductance, second current transformer of connecting successively; Battery side checkout gear 4 comprises three battery side testing circuits, and every article of battery side testing circuit is provided with the second inductance and the 3rd current transformer of series connection mutually, and the first drive plate is connected with each IGBT switch of control board and three-phase back-to-back converter 3 grid side; Second drive plate is connected with each IGBT switch of control board three-phase back-to-back converter 3 battery side.Its technique effect is: power can two-way flow, and DC bus-bar voltage is controlled.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of intelligent recharge and discharge machine main circuit of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1; a kind of intelligent recharge and discharge machine main circuit of the present utility model, comprises grid side checkout gear 1, filter 2, protective circuit 21, three-phase back-to-back converter 3, battery side checkout gear 4, energy storage polar capacitor 51, battery 52, first drive plate 61, second drive plate 62 and control board 60.
Three-phase back-to-back converter 3 is divided into grid side, battery side, and with the 3rd polar capacitor Cd3 of described grid side and described battery side reverse parallel connection.Described grid side is provided with three-phase brachium pontis T1 ~ T3 parallel with one another, and every phase brachium pontis is equipped with two IGBT switches of mutually connecting, and described battery side is provided with three-phase brachium pontis T4 ~ T6, and every phase brachium pontis is equipped with the IGBT switch of two mutual series connection.
Grid side checkout gear 1 comprises the voltage transformer pt be positioned on three-phase power line, and correspondence is positioned at three grid side testing circuits in each phase line of three-phase power line, every bar grid side testing circuit comprises the first fuse FU1 connected successively, first current transformer TA1, mains switch K1, first inductance L 1, second current transformer TA2, wherein the first fuse FU1 is connected with the secondary side of voltage transformer pt, second current transformer TA2 connects with corresponding phase brachium pontis in the three-phase brachium pontis T1 ~ T3 in the grid side of three-phase back-to-back converter 3, and tie point is positioned at the junction of two IGBT switches on this phase brachium pontis.
Battery side checkout gear 4 comprises three battery side testing circuits, the second inductance L 2 that each battery side testing circuit is connected mutually and the 3rd current transformer TA3, wherein the second inductor L2 connects with corresponding phase brachium pontis in the three-phase brachium pontis T4 ~ T6 in the battery side of three-phase back-to-back converter 3, and tie point is positioned at the junction of two IGBT switches on this phase brachium pontis.
The primary voltage value recorded, inlet wire current value are outputted to control board 60 by grid side checkout gear 1.Battery side checkout gear 4 by the line voltage value recorded, go out line current value and output to control board 60.
The positive pole of energy storage polar capacitor 51 connects the 3rd current transformer TA3 on three articles of battery side testing circuits of battery side checkout gear 4, and negative pole connects the negative pole of the 3rd polar capacitor Cd3 on three-phase back-to-back converter 3.
The positive pole of battery 52 connects the 3rd current transformer TA3 on three articles of battery side testing circuits of battery side checkout gear 4, and negative pole connects the negative pole of the 3rd polar capacitor Cd3 on three-phase back-to-back converter 3.
The input of the first drive plate 61 is connected with the first output of control board 60, and the output of the first drive plate 61 is connected with each IGBT switch on the three-phase brachium pontis T1 ~ T3 of three-phase back-to-back converter 3 grid side;
The input of the second drive plate 62 is connected with the second output of control board 60, and the output of the second drive plate 62 is connected with each IGBT switch on the three-phase brachium pontis T4 ~ T6 of three-phase back-to-back converter 3 battery side.
Filter 2 comprises three filter circuits of connecting successively, each filtered electrical includes the first polar capacitor Cd1, the second polar capacitor Cd2, the 4th inductance L 4, and the first resistance R1, the positive pole of the first polar capacitor Cd1 connects grid side measure loop corresponding on grid side checkout gear 1, negative pole connects positive pole and the first resistance R1 of the second polar capacitor Cd2, one end of 4th inductance L 4 connects the negative pole of the second polar capacitor Cd2, one end connects the first resistance R1 in addition, thus make the second polar capacitor Cd2, the 4th inductance L 4, and the first resistance R1 forms loop.Filter 2 plays high order harmonic component in cancellation charge and discharge process, improves the effect of grid side checkout gear 1 accuracy of detection.
Protective circuit 21 is in parallel with the mains switch K1 of any one the grid side protective circuit on grid side checkout gear 1, and protective circuit 21 comprises K switch 2, the second fuse FU2 and the second resistance R2 that connect successively.
Control board 60 is connected with touch-screen 9.Control board 60 receives analog signals, comprises primary voltage, inlet wire current value; Line voltage and go out line current value, by controlling each IGBT switch on three-phase back-to-back converter 3, to control battery 52 and energy storage polar capacitor 51 to grid transmission, or electrical network charges to battery 52 and energy storage polar capacitor 51.
Although through being described in conjunction with specific embodiments the utility model, for the skilled personage of the art, according to describing above make substitute, amendment will be apparent with changing.Therefore, when such alternative, modifications and variations fall in the spirit and scope of attached claim, should be included in the utility model.
Claims (4)
1. an intelligent recharge and discharge machine main circuit, comprises grid side checkout gear, three-phase back-to-back converter, battery side checkout gear, polarity storage capacitor, battery, the first drive plate, the second drive plate and control board, it is characterized in that:
Described three-phase back-to-back converter is divided into grid side, battery side, and with the 3rd polar capacitor of described grid side and described battery side reverse parallel connection, described grid side and described battery side are respectively provided with three-phase brachium pontis, often mutually described brachium pontis are equipped with two IGBT switches of mutually connecting;
Described grid side checkout gear comprises the voltage transformer be positioned on three-phase power line, and correspondence is positioned at three grid side testing circuits in each phase line of described three-phase power line, grid side testing circuit described in every bar comprises first fuse of connecting successively, first current transformer, mains switch, first inductance and the second current transformer, wherein said first fuse is connected with the secondary side of described voltage transformer, described second current transformer connects with the corresponding phase brachium pontis in the grid side of described three-phase back-to-back converter, and tie point is positioned at the junction of two IGBT switches on this phase brachium pontis,
Described battery side checkout gear comprises three battery side testing circuits, battery side testing circuit described in every article is provided with the second inductance and the 3rd current transformer of series connection mutually, wherein said second inductor connects with the corresponding phase brachium pontis in the battery side of described three-phase back-to-back converter, and tie point is positioned at the junction of two IGBT switches on this phase brachium pontis;
The positive pole of described energy storage polar capacitor connects the 3rd current transformer on three battery side testing circuits of described battery side checkout gear, and negative pole connects the negative pole of the 3rd polar capacitor on described three-phase back-to-back converter;
The positive pole of described battery connects the 3rd current transformer on three battery side testing circuits of described battery side checkout gear, and negative pole connects the negative pole of the 3rd polar capacitor on described three-phase back-to-back converter;
The input of described first drive plate is connected with the first output of described control board, and the output of described first drive plate is connected with each IGBT switch of described three-phase back-to-back converter grid side;
The input of described second drive plate is connected with the second output of described control board, and the output of described second drive plate is connected with each IGBT switch of described three-phase back-to-back converter battery side.
2. a kind of intelligent recharge and discharge machine main circuit according to claim 1, it is characterized in that: it also comprises filter, described filter comprises three filter circuits of connecting successively, each described filtered electrical includes the first polar capacitor, second polar capacitor, 4th inductance, and first resistance, the positive pole of described first polar capacitor connects grid side measure loop corresponding on described grid side checkout gear, negative pole connects the positive pole of described second polar capacitor and described first resistance, one end of described 4th inductance connects the negative pole of described second polar capacitor, one end connects described first resistance in addition, thus make described second polar capacitor, described 4th inductance, and described first resistance forms loop.
3. a kind of intelligent recharge and discharge machine main circuit according to claim 1; it is characterized in that: it also comprises protective circuit; described protective circuit is in parallel with the mains switch of any one the grid side testing circuit on described grid side checkout gear, and described protective circuit comprises switch, the second fuse and second resistance of connecting successively.
4. a kind of intelligent recharge and discharge machine main circuit according to claim 1, is characterized in that: described control board is also connected with touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520098399.1U CN204407966U (en) | 2015-02-11 | 2015-02-11 | A kind of intelligent recharge and discharge machine main circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520098399.1U CN204407966U (en) | 2015-02-11 | 2015-02-11 | A kind of intelligent recharge and discharge machine main circuit |
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| CN204407966U true CN204407966U (en) | 2015-06-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578327A (en) * | 2015-02-11 | 2015-04-29 | 国网上海市电力公司 | Smart charging and discharging motor main circuit |
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- 2015-02-11 CN CN201520098399.1U patent/CN204407966U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578327A (en) * | 2015-02-11 | 2015-04-29 | 国网上海市电力公司 | Smart charging and discharging motor main circuit |
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