CN211127591U - DC/DC high-voltage direct current power supply module - Google Patents
DC/DC high-voltage direct current power supply module Download PDFInfo
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- CN211127591U CN211127591U CN202020059684.3U CN202020059684U CN211127591U CN 211127591 U CN211127591 U CN 211127591U CN 202020059684 U CN202020059684 U CN 202020059684U CN 211127591 U CN211127591 U CN 211127591U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a DC high voltage direct current power supply module, including trouble isolating circuit, chopper step-down circuit and three-phase LL C resonance inverter circuit, trouble isolating circuit, chopper step-down circuit and three-phase LL C resonance inverter circuit link to each other in proper order the utility model discloses a DC high voltage direct current power supply module has simple structure, switching frequency height, small, efficient, dynamic response is fast, constant voltage constant current regulation, intelligent trouble switch and withdraw from advantages such as trouble module, automatic voltage-sharing flow equalizing automatically.
Description
Technical Field
The utility model relates to a seabed high voltage direct current power supply technical field refers in particular to a DC/DC high voltage direct current power module.
Background
The traditional seabed high-voltage direct-current transmission generally adopts a converter transformer to boost voltage, then the voltage is rectified into high-voltage direct-current voltage through a converter station, the high-voltage direct-current voltage is transmitted to a far end through a transmission line cable, the high-voltage direct-current voltage is inverted into three-phase alternating current at the far end through a high-voltage inverter, and the three-phase alternating current is connected to a power grid after. For long-distance power supply, due to the impedance of the line, a certain voltage drop exists on the power transmission line, and the voltage drop generates loss, so that the power loss is caused. Therefore, subsea long-distance power supply usually requires raising the power supply voltage, and high-voltage power transmission is adopted.
At present, a plurality of DC/DC high-voltage direct-current power supply modules are adopted in a submarine power supply system, so that when one DC/DC high-voltage direct-current power supply module fails, the whole power supply system can not work normally, and the reliability of the power supply system is low; in addition, the structure of the whole power supply system is complex and is not easy to realize.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in: to the technical problem that prior art exists, the utility model provides a DC high voltage direct current power module with simple structure, safe and reliable.
In order to solve the technical problem, the utility model provides a technical scheme does:
a DC/DC high-voltage direct-current power supply module comprises a fault isolation circuit, a chopping voltage reduction circuit and a three-phase LL C resonant inverter circuit, wherein the fault isolation circuit, the chopping voltage reduction circuit and the three-phase LL C resonant inverter circuit are sequentially connected.
As a further improvement of the above technical solution:
the fault isolation circuit comprises a switching tube Q5 and a resistor R11, wherein the switching tube Q5 and the resistor R11 are connected in series and then connected with the input end of the chopper step-down circuit in parallel.
The fault isolation circuit comprises a switch tube Q16, and the switch tube Q5 is connected with a resistor R11 in series and then connected with a Q16 in parallel.
The chopper step-down circuit comprises capacitors C1, C2, C5, C8, C10, C12 and C13, resistors R1 and R2, MOS transistors Q1-Q4 and Q12-Q15, commutation inductors L1A, L1B, L02A and L12B, chopper inductors L1 and L2, resistors R1 and R2 are connected in series and then connected in parallel to two buses of the chopper step-down circuit, C8 and C10 are connected in series and then connected in parallel to two buses of the chopper step-down circuit, the drain of Q1 is connected with the positive bus, the source of Q1 is connected with the drain of Q2, the source of Q2 is connected with the drain of Q12, the source of Q12 is connected with the drain of Q12, the source of Q12 is connected with the negative bus, the drain of Q12 is connected with the positive bus, the source of Q12 is connected with the negative bus, the source of Q12 is connected with the C12, the drain of the negative bus is connected with the C12, the drain of the C12 is connected with the negative bus, the C12 is connected with the source of the C12, the C12 is connected with the C12, the C12 is connected with the C12, the C12.
The chopping voltage reduction circuit further comprises a current sensor BC1, BC1 which is connected in series with the positive bus.
The chopper voltage reduction circuit further comprises resistors R3 and Q17, and the resistors R3 and Q17 are connected in series and then connected with the capacitor C5 in parallel.
The three-phase C resonant inverter circuit comprises an MOS transistor Q-Q, a capacitor Cr-Cr, a transformer T-T, a diode D-D and a capacitor C, wherein the drain electrode of the Q is connected with a positive bus of the three-phase C resonant inverter circuit, the source electrode of the Q is connected with the drain electrode of the Q, the source electrode of the Q is connected with a negative bus, the drain electrode of the Q is connected with the positive bus, the source electrode of the Q is connected with the drain electrode of the Q, the source electrode of the Q is connected with the negative bus, one end of the Cr is connected with the source electrode of the Q, the other end of the Cr is connected with one end of the T input, the other ends of the T, the T and the T input are connected with each other, one end of the T output is connected with the positive electrode of the D and the negative electrode of the D, one end of the T output is connected with the negative electrode of the D, the positive electrode of the D and the negative electrode of the D, the D output are connected with the negative electrode of the D, the three-phase C resonant inverter circuit, the negative electrode of the three-phase C output bus is connected with the negative electrode of the positive bus, and the negative electrode of the D-D, and the negative electrode of the D, and the D output of the three-D, and the three-phase C output bus.
And a current sensor TA1 is arranged at the other end of the T1, T2 and T3 inputs.
The output end of the three-phase LL C resonant inverter circuit is connected with a filter circuit, and the filter circuit comprises an EMI filter.
Also included is a DC24V/DC24V circuit with an insulation voltage rating of up to AC30 kV.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a DC/DC high voltage direct current power supply module, including trouble isolating circuit, chopper step-down circuit and three-phase LL C resonance inverter circuit, simple structure and easily realization have the function of automatic bypass when the trouble, realize discharging and the bypass through switch tube Q5 and Q16, wherein Q5 is discharge switch, and Q16 is bypass switch, and the discharge switch route has guaranteed bypass switch work in device safety parameter, has realized the function of module input high-voltage end bypass.
The utility model discloses a DC/DC high voltage direct current power module has high input voltage, high isolation voltage, switching frequency height, soft switching technique, small, efficient, dynamic response is fast, the constant voltage constant current is adjusted, intelligent fault switching and automatic quit fault module, automatic voltage-sharing flow equalizes advantages such as, the specially adapted high voltage direct current converts the voltage (for the functional device power supply at terminal) of several hundred volt voltage levels behind the remote direct current transmission.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the present invention.
The reference numbers in the figure indicate 1, a fault isolation circuit, 2, a chopping step-down circuit, 3, a three-phase LL C resonance inverter circuit and 4, a filter circuit.
Detailed Description
The invention is further described with reference to the drawings and the specific embodiments.
As shown in FIG. 1, the DC/DC high-voltage direct-current power supply module of the embodiment comprises a fault isolation circuit 1, a chopper step-down circuit 2 and a three-phase LL C resonant inverter circuit 3, wherein the fault isolation circuit 1, the chopper step-down circuit 2 and the three-phase LL C resonant inverter circuit 3 are connected in sequence, the chopper step-down circuit 2 is used for chopping and reducing input high-voltage direct-current voltage into lower voltage, the three-phase LL C resonant inverter circuit 3 is used for isolating and converting output voltage of the chopper step-down circuit 2 into direct-current voltage required by a load, the fault isolation circuit 1 comprises switching tubes Q5, Q16 and a resistor R11, the switching tube Q5 and the resistor R11 are connected in series with each other and then connected in parallel with a Q16, the DC/DC high-voltage direct-current power supply module is connected in series by input when in normal use, the DC/DC high-voltage direct-current power supply module is used in a mode of input series connection and output parallel connection, particularly, the DC/DC power supply module adopts a design of a high-voltage input and on-disconnection on-line fault on-disconnection fault processing logic, when a high-voltage bypass switch Q-bypass switching module detects that a fault-bypass fault-input/bypass switching module, a fault-bypass switching-bypass switching module, a fault-bypass switching-bypass switching module, a fault-bypass switching module, a high-bypass high-.
In the embodiment, a chopper buck circuit 2 comprises capacitors C1, C2, C5, C8, C10, C12 and C13, resistors R1, R2 and R3, MOS transistors Q1-Q4, Q12-Q15 and Q17, commutation inductors L1A, L1B, L02A and L12B, chopper inductors L1 and L2, a resistor R L and a resistor R L are connected in series and then connected in parallel with two buses (a positive bus and a negative bus) of the chopper buck circuit 2, the capacitors C L and C L are connected in series and then connected in parallel with the two buses of the chopper buck circuit 2, the drain of the resistor Q L is connected with the positive bus, the source of the resistor Q L is connected with the drain of the resistor R L, the drain of the resistor R L is connected with the positive bus 72, the drain of the resistor R L is connected with the positive bus L, the drain of the positive bus L, the source L is connected with the source of the drain of the positive bus L, the drain of the positive bus, the drain L is connected with the source L, the drain of the drain L, the drain of the drain L is connected with the C L, the drain of the negative bus, the drain L, the drain of the C L is connected with the C L, the drain of the C L, the drain of the C L is connected with the C L, the drain of the C L, the drain of the C L is connected with the C L, the drain of the C L.
In the embodiment, the three-phase C resonant inverter circuit 3 comprises an MOS (metal oxide semiconductor) transistor Q-Q, a capacitor Cr-Cr, a transformer T-T, a diode D-D and a capacitor C, wherein a drain electrode of the Q is connected with a positive bus of the three-phase C resonant inverter circuit 3, a source electrode of the Q is connected with a drain electrode of the Q, a source electrode of the Q is connected with a negative bus, a drain electrode of the Q is connected with the positive bus, a source electrode of the Q is connected with a drain electrode of the Q, a source electrode of the Q is connected with the negative bus, one end of the Cr is connected with a source electrode of the Q, the other end of the Cr is connected with a drain electrode of the Q, the other end of the Q is connected with the negative bus, one end of the Cr is connected with a positive electrode of the T, the other end of the T and the other end of the T are connected with each other, one end of the T output is connected with a positive electrode of the D and a negative electrode of the D, one end of the T is connected with a negative electrode of the D, the T, the positive bus, the negative electrode of the T, the D, the T, the.
In the embodiment, the power supply further comprises a DC24V/DC24V circuit with the insulation voltage grade reaching AC30kV, the DC24V/DC24V circuit outputs power from a self-starting power supply DC24V in the DC/DC high-voltage direct-current power supply module, and output ends of the DC 24/DC 24 circuit are connected in parallel to form a redundancy design and used for supplying power to a controller UC1 and a driver of the DC/DC high-voltage direct-current power supply module during self-starting.
In a specific embodiment, the chopper step-down circuit 2 converts input DC 710-DC 2400V into stable DC375V, and the three-phase LL C resonant inverter circuit 3 isolates and rectifies the DC375V through a high-frequency transformer to obtain DC375V, and then filters the DC375V through the filter circuit 4 to supply power to a load.
The utility model discloses a DC/DC high voltage direct current power module has high input voltage, high isolation voltage, switching frequency height, soft switching technique, small, efficient, dynamic response is fast, the constant voltage constant current is adjusted, intelligent fault switching and automatic quit fault module, automatic voltage-sharing flow equalizes advantages such as, the specially adapted high voltage direct current converts the voltage (for the functional device power supply at terminal) of several hundred volt voltage levels behind the remote direct current transmission.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (10)
1. The DC/DC high-voltage direct-current power supply module is characterized by comprising a fault isolation circuit (1), a chopping step-down circuit (2) and a three-phase LL C resonant inverter circuit (3), wherein the fault isolation circuit (1), the chopping step-down circuit (2) and the three-phase LL C resonant inverter circuit (3) are sequentially connected.
2. The DC/DC high-voltage direct-current power supply module according to claim 1, characterized in that the fault isolation circuit (1) comprises a switch tube Q5 and a resistor R11, and the switch tube Q5 and the resistor R11 are connected in series and then connected in parallel with the input end of the chopper-buck circuit (2).
3. The DC/DC high voltage direct current power supply module according to claim 2, characterized in that the fault isolation circuit (1) comprises a switch Q16, the switch Q5 and a resistor R11 are connected in series and then connected in parallel with Q16.
4. The DC/DC high-voltage direct-current power supply module according to claim 1, 2 or 3, characterized in that the chopper step-down circuit (2) comprises capacitors C, R, resistors R, MOS transistors Q-Q, commutation inductors 1A, 1B, 02A, 12B, chopper inductors 1, 2, R and R are connected in series and connected in parallel to two buses of the chopper step-down circuit (2), C and C are connected in series and connected in parallel to two buses of the chopper step-down circuit (2), the drain of Q is connected to a positive bus, the source of Q is connected to the drain of Q, the drain of Q is connected to a negative bus, one end of C is connected to the drain of Q, the other end of C is connected to one source of C, the drain of Q is connected to the positive bus, the drain of Q is connected to the negative bus, the source of C is connected to the negative bus, the drain of C is connected to the positive bus, the drain of Q is connected to the negative bus, the positive bus is connected to the drain of Q, the negative bus, the source of the C is connected to the negative bus, the drain of the C is connected to the positive bus, the drain of the positive bus, the negative bus is connected to the drain of the C is connected to the positive bus, the negative bus, the source of the C is connected to the negative bus, the drain of the negative bus, the C is connected to the negative bus, the source of the C is connected to the negative bus, the C is connected to the source of.
5. DC/DC high voltage direct current power supply module according to claim 4, characterized in that the chopper-buck circuit (2) further comprises a current sensor BC1, BC1 connected in series on the positive busbar.
6. The DC/DC high-voltage direct current power supply module according to claim 4, characterized in that the chopper-step-down circuit (2) further comprises resistors R3 and Q17, and the resistors R3 and Q17 are connected in series and then connected in parallel with the capacitor C5.
7. The DC/DC high-voltage direct-current power supply module according to claim 1, 2 or 3, characterized in that the three-phase C resonant inverter circuit (3) comprises a MOS transistor Q-Q, a capacitor Cr-Cr, a transformer T-T, a diode D-D and a capacitor C, wherein a drain electrode of the Q is connected with a positive bus of the three-phase C resonant inverter circuit (3), a source electrode of the Q is connected with a drain electrode of the Q, a source electrode of the Q is connected with a negative bus, a drain electrode of the Q is connected with a positive bus, a source electrode of the Q is connected with a drain electrode of the Q, a source electrode of the Q is connected with a negative bus, one end of the Cr is connected with a source electrode of the Q, the other end of the Cr is connected with one end of the T input, the other end of the T input is connected with one end of the T input, the negative end of the T output, the positive bus of the T input is connected with a negative end of the T input, the D, the positive bus is connected with a negative bus, the positive bus of the D, the three-phase C output of the three-C resonant inverter circuit D and the negative bus, the negative bus are connected in parallel, the positive bus, the negative bus is connected with the negative bus, the positive bus is connected with the negative bus, the positive bus, the negative bus, the positive bus is connected with the negative bus, the positive.
8. The DC/DC high voltage DC power supply module according to claim 7, characterized in that a current sensor TA1 is provided on the other end of the T1, T2 and T3 inputs.
9. The DC/DC high voltage direct current power supply module according to claim 1, 2 or 3, characterized in that a filter circuit (4) is connected to the output of the three-phase LL C resonant inverter circuit (3), the filter circuit (4) comprising an EMI filter.
10. The DC/DC high voltage direct current power supply module according to claim 1, 2 or 3, further comprising a DC24V/DC24V circuit with an insulation voltage level up to AC30 kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020059684.3U CN211127591U (en) | 2020-01-10 | 2020-01-10 | DC/DC high-voltage direct current power supply module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020059684.3U CN211127591U (en) | 2020-01-10 | 2020-01-10 | DC/DC high-voltage direct current power supply module |
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| CN211127591U true CN211127591U (en) | 2020-07-28 |
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| CN202020059684.3U Active CN211127591U (en) | 2020-01-10 | 2020-01-10 | DC/DC high-voltage direct current power supply module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337305A (en) * | 2021-12-31 | 2022-04-12 | 苏州汇川控制技术有限公司 | DC voltage conversion circuit and device |
| CN116565927A (en) * | 2023-07-12 | 2023-08-08 | 锦浪科技股份有限公司 | Battery energy storage system with fault tolerance function |
-
2020
- 2020-01-10 CN CN202020059684.3U patent/CN211127591U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337305A (en) * | 2021-12-31 | 2022-04-12 | 苏州汇川控制技术有限公司 | DC voltage conversion circuit and device |
| CN116565927A (en) * | 2023-07-12 | 2023-08-08 | 锦浪科技股份有限公司 | Battery energy storage system with fault tolerance function |
| CN116565927B (en) * | 2023-07-12 | 2023-10-20 | 锦浪科技股份有限公司 | Battery energy storage system with fault tolerance function |
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Denomination of utility model: A DC / DC high voltage DC power supply module Effective date of registration: 20210427 Granted publication date: 20200728 Pledgee: Hunan Xingsha Rural Commercial Bank Co.,Ltd. quantang sub branch Pledgor: CHANGSHA GUANGYI CONVERTING TECHNIQUE Co.,Ltd. Registration number: Y2021980003071 |