CN211456995U - DC switch and DC energy supply device thereof - Google Patents
DC switch and DC energy supply device thereof Download PDFInfo
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- CN211456995U CN211456995U CN201922496287.2U CN201922496287U CN211456995U CN 211456995 U CN211456995 U CN 211456995U CN 201922496287 U CN201922496287 U CN 201922496287U CN 211456995 U CN211456995 U CN 211456995U
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Abstract
The utility model relates to a direct current switch and direct current energy supply device thereof belongs to direct current transmission technical field. The energy supply device comprises a DC/DC power supply, the DC/DC power supply comprises an inverter circuit, a resonance circuit, an isolation transformer and a rectification circuit which are sequentially connected in series, and the input end of the inverter circuit is used for being connected with a direct-current energy storage device or a direct-current power supply; the input end of the alternating current source is connected with the rectifying circuit and used for converting a direct current source output by the rectifying circuit into an alternating current source, and the output end of the alternating current source is connected with a feed-through cable; the energy taking magnetic ring is arranged on the through cable in a penetrating mode, and the output end of each AC/DC power supply module is used for supplying power to one power module in the direct current switch. The utility model discloses a direct current energy supply device can satisfy the high potential and get the insulating design requirement of ability, can be applied to in the direct current switch or the circuit breaker product of 10kV-35 kV's direct current distribution network.
Description
Technical Field
The utility model belongs to the technical field of direct current transmission, concretely relates to direct current switch and direct current energy supply device thereof.
Background
In the direct current distribution network system, direct current switch's energy supply system mainly adopts traditional interchange power frequency CT energy supply scheme, for example announces the chinese utility model patent for CN206117315U, and this patent has proposed a supply circuit who is used for direct current circuit breaker power module, and the mode through a plurality of power frequency isolation transformer realizes the insulating processing of high-low pressure side and system insulation, is applicable to the direct current distribution network system of exchanging the station power consumption. However, in a dc distribution network, especially in a dc distribution network system that does not provide power for ac stations, the existing power supply methods have been unable to meet the power supply requirements of dc switches.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a direct current switch and direct current energy supply device thereof for solve prior art's energy supply mode and can't satisfy direct current switch's power supply demand problem when not providing the power consumption of interchange station.
Based on the above purpose, a technical scheme of a dc energy supply device of a dc switch is as follows:
the DC/DC power supply comprises an inverter circuit, a resonance circuit, an isolation transformer and a rectification circuit, wherein the inverter circuit, the resonance circuit, the isolation transformer and the rectification circuit are sequentially connected in series, and the input end of the inverter circuit is used for connecting a direct-current energy storage device or a direct-current power supply;
the input end of the alternating current source is connected with the rectifying circuit and is used for converting a direct current source output by the rectifying circuit into an alternating current source, and the output end of the alternating current source is connected with a feed-through cable;
the energy taking magnetic rings are arranged on the through cables in a penetrating manner, and the through cables are used as primary windings of the energy taking magnetic rings; the output end of each AC/DC power supply module is used for supplying power to one power module in the direct current switch.
The beneficial effects of the above technical scheme are:
the utility model discloses a direct current energy supply device is applicable to the direct current distribution network system that does not provide the power consumption of alternating current station, and this direct current energy supply device passes through contravariant, resonance, isolation vary voltage and rectification with the direct current of direct current energy storage equipment or direct current power supply in proper order through DC/DC power at first, realizes former vice limit electrical isolation, outputs the direct current signal of suitable voltage level, satisfies high, low pressure side insulation isolation requirement simultaneously; and finally, the AC/DC power supply module utilizes the energy taking magnetic ring to take energy from the AC current source for supplying power to a power module in the DC switch. The utility model discloses a direct current energy supply device can satisfy the high potential and get the insulating design requirement of ability, and energy supply system configuration is nimble, and the expanding capacity is strong, promptly: 1) different configurations of the AC/DC driving power supply module can be realized according to the number of the system power modules; 2) according to the system voltage grade, the isolation of a primary loop and an AC/DC power supply module can be met by selecting the feed-through cables with different voltage-resistant specifications; 3) and according to the system voltage grade, configuring a direct-current isolation transformer with the equivalent voltage-resistant grade to meet the insulation requirement of a primary loop and a secondary power supply loop. The utility model discloses a direct current energy supply device, but the wide application is in the direct current switch or the circuit breaker product in 10kV-35 kV's direct current distribution network.
In order to reduce the transformation ratio of the isolation transformer and simultaneously meet the voltage requirement of the direct current switch, further, the DC/DC power supply further comprises:
and the input end of the booster circuit is used for being connected with the direct-current energy storage equipment or the direct-current power supply, and the output end of the booster circuit is connected with the input end of the inverter circuit.
The utility model discloses a direct current energy supply device realizes the voltage boost effect through boost circuit and isolation transformer combined action, carries out first boost through boost circuit earlier, and rethread isolation transformer carries out the boost for the second time, and for the mode that uses isolation transformer to carry out independent boost, through boost circuit and isolation transformer combination boost, can reduce isolation transformer's transformation ratio on the one hand, the coiling is easier, and the primary intercoupling is good, the leakage inductance is little; on the other hand, the primary side and the secondary side realize voltage range input and output, and the application range is wider.
Further, the dc power supply device further includes:
and the filter circuit comprises a filter inductor and a filter capacitor, the filter inductor and the filter capacitor are connected in series, the series end of the filter inductor and the filter capacitor is used for being connected with the direct current energy storage equipment or the direct current power supply, and two ends of the filter capacitor are connected with the input end of the booster circuit.
Through the filter circuit, the ripple coefficient of the voltage output by the direct current energy storage equipment or the direct current power supply is reduced, a large ripple component (namely ripple) in an output waveform is reduced, and finally the output waveform is smoothed to obtain the direct current voltage with a good waveform.
Furthermore, the output end of the rectifying circuit is connected in parallel with a second capacitor, and two ends of the second capacitor are connected in parallel with a resistive load.
Because the voltage output by the isolation transformer is high voltage, the voltage needs to be supported by the second capacitor, and meanwhile, the resistive load is arranged and used for discharging electricity for the second capacitor with high voltage through the resistive load when the direct current energy supply device is closed.
Based on the above purpose, a technical scheme of the direct current switch is as follows:
this direct current switch includes main branch road, shifts branch road and power consumption branch road, it is equipped with a plurality of power module to shift to go up the cluster, still includes direct current energy supply device, direct current energy supply device includes:
the DC/DC power supply comprises an inverter circuit, a resonance circuit, an isolation transformer and a rectification circuit, wherein the inverter circuit, the resonance circuit, the isolation transformer and the rectification circuit are sequentially connected in series, and the input end of the inverter circuit is used for connecting a direct-current energy storage device or a direct-current power supply;
the input end of the alternating current source is connected with the rectifying circuit and is used for converting a direct current source output by the rectifying circuit into an alternating current source, and the output end of the alternating current source is connected with a feed-through cable;
the energy taking magnetic rings are arranged on the through cables in a penetrating manner, and the through cables are used as primary windings of the energy taking magnetic rings; the output end of each AC/DC power supply module is used for supplying power to one power module in the direct current switch.
The beneficial effects of the above technical scheme are:
the utility model discloses a direct current switch utilizes direct current energy supply device to supply power for the power module in direct current switch, and direct current energy supply device is applicable to the direct current that does not provide the power consumption of alternating current station and joins in marriage network system, and this direct current energy supply device passes through contravariant, resonance, isolation vary voltage and rectification with the direct current of direct current energy storage equipment through DC/DC power in proper order at first, realizes former secondary side electrical isolation, outputs the direct current signal of suitable voltage level, satisfies high, low pressure side insulation isolation requirement simultaneously; and finally, the AC/DC power supply module utilizes the energy taking magnetic ring to take energy from the AC current source for supplying power to a power module in the DC switch. The utility model discloses a but the wide application is in 10kV-35 kV's direct current distribution network.
Further, a vibration capacitor and a vibration inductor are further arranged on the transfer branch in series, and two ends of the vibration capacitor are connected with the output end of the rectification circuit. The aim of charging the oscillating capacitor on the transfer branch is achieved through the DC/DC power supply.
Furthermore, the output end of the rectifying circuit is connected in parallel with a second capacitor, and two ends of the second capacitor are connected in parallel with a resistive load.
Because the voltage output by the isolation transformer is high voltage, the voltage needs to be supported by the second capacitor, and meanwhile, the resistive load is arranged and used for discharging electricity for the second capacitor with high voltage through the resistive load when the direct current energy supply device or the direct current power supply is closed.
Further, the DC/DC power supply further includes:
and the input end of the booster circuit is used for being connected with the direct-current energy storage equipment or the direct-current power supply, and the output end of the booster circuit is connected with the input end of the inverter circuit.
Realize the voltage boost effect through boost circuit and isolation transformer combined action, carry out the first time through boost circuit earlier and step up, rethread isolation transformer carries out the second time and steps up, for the mode that uses isolation transformer to carry out independent boost, combine through boost circuit and isolation transformer to step up, can reduce isolation transformer's transformation ratio, the coiling more easily, the primary is close well, the leakage inductance is little between the level.
Further, the dc power supply device further includes:
and the filter circuit comprises a filter inductor and a filter capacitor, the filter inductor and the filter capacitor are connected in series, the series end of the filter inductor and the filter capacitor is used for being connected with the direct current energy storage equipment or the direct current power supply, and two ends of the filter capacitor are connected with the input end of the booster circuit.
Through the filter circuit, the ripple coefficient of the voltage output by the direct current energy storage equipment is reduced, a large ripple component (namely ripple) in an output waveform is reduced, and finally the output waveform is smoothed to obtain the direct current voltage with a good waveform.
Drawings
Fig. 1 is a schematic diagram of a dc power supply device of a dc switch according to an embodiment of the power supply device of the present invention;
fig. 2-1 is a topology diagram of a DC/DC power supply according to an embodiment of the energy supply apparatus of the present invention;
fig. 2-2 is a topology diagram of another DC/DC power supply according to an embodiment of the energy supply apparatus of the present invention;
fig. 3 is a schematic diagram of a dc switch according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a dc power supply device of a dc switch according to an embodiment of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
Energy supply device embodiment:
the utility model discloses a direct current energy supply device of direct current switch, as shown in fig. 1, including the DC/DC power, the high frequency is got can electric current source DY (alternating current source promptly) to and a plurality of AC/DC power module DY1, DY2, …, DYn and get can the magnetic ring.
The DC/DC power supply is used for performing direct current conversion, the input end of the DC/DC power supply is connected with a direct current energy storage device or a direct current power supply in a direct current distribution network system, the output end of the DC/DC power supply is connected with a high-frequency energy-obtaining current source, the high-frequency energy-obtaining current source is used for converting a direct current source output by the DC/DC power supply into an alternating current source, the output ends x1 and x2 of the high-frequency energy-obtaining current source are connected with through cables (high-voltage cables), each energy-obtaining magnetic ring penetrates through the through cables, the through cables serve as primary windings of each energy-obtaining magnetic ring, secondary windings of each energy-obtaining magnetic ring are correspondingly connected with the input end of an AC/DC power supply module, each AC/DC power supply module comprises a rectifying circuit and a voltage stabilizing circuit and is used for rectifying and stabilizing the obtained alternating current.
In this embodiment, a topology structure of the DC/DC power supply is shown in fig. 2-1, the DC/DC power supply includes a filter circuit, a boost circuit, an inverter circuit, a resonant circuit, an isolation transformer, and a rectifier circuit, which are sequentially connected in series, specifically, the filter circuit includes a filter inductor L2 and a filter capacitor C3, the filter inductor L2 and the filter capacitor C3 are connected in series, and a series end of the filter inductor L2 and the filter capacitor C3 serves as an input end of the DC/DC power supply and is used for connecting a DC energy storage device or a DC power supply. The filter circuit can reduce the ripple coefficient of the output voltage, reduce the larger ripple component (namely ripple) in the output waveform, and finally smooth the output waveform so as to obtain the direct-current voltage with better waveform.
In this embodiment, a topology structure of the BOOST circuit (BUCK-BOOST circuit) is shown in fig. 2-1, and includes a first inductor L, controllable switches S3, S4, and a first capacitor C1, where one end of the first inductor L1 is connected to a series end of a filter capacitor C3 and a filter inductor L2, the other end of the first inductor L1 is connected to a series end of the controllable switches S3 and S3, and the controllable switches S3 and S3 are connected in series to form a switch series branch, and the switch series branch is connected in parallel to the first capacitor C1. The boosting circuit is used for boosting for the first time and is matched with a rear-stage isolation transformer to jointly realize the voltage boosting effect of the direct-current energy supply device.
In this embodiment, the topology of the inverter circuit is as shown in fig. 2-1, and includes two controllable switches, namely a controllable switch S1 and a controllable switch S2, and the dc inversion is implemented by alternately controlling the on and off of the controllable switches S1 and S2.
In this embodiment, the topological structure of the resonant circuit and the isolation transformer is as shown in fig. 2-1, the resonant circuit includes a resonant inductor Lr, a resonant capacitor Cr, and an excitation inductor Lm, and the high-frequency ac signal is output by adjusting parameters of the capacitor and the inductor. Isolation transformer is used for carrying out high, low pressure and keeps apart, satisfies high, low pressure side system insulation requirement, and according to transformation ratio 1: and n is boosted. Because realize the voltage boost effect through boost circuit and isolation transformer combined action in this embodiment, carry out first boosting through boost circuit earlier, rethread isolation transformer carries out the second time and steps up, for the mode that uses isolation transformer to carry out independent boost, combine to step up through boost circuit and isolation transformer, can reduce isolation transformer's transformation ratio, the coiling more easily, the primary intercoupling is good, the leakage inductance is little.
In this embodiment, the topology of the rectifier circuit is as shown in fig. 2-1, and includes diodes D1, D2, D3, and D4, and the four diodes constitute an H-bridge rectifier circuit to achieve rectification of the ac signal. The output end of the rectifying circuit is connected in parallel with a second capacitor C2, and two ends of the second capacitor C2 are connected in parallel with a resistor R1. Since the voltage output by the isolation transformer is high, it needs to be supported by the second capacitor C2, and at the same time, a resistive load (i.e., resistor R1) is provided to discharge the second capacitor C2 through the resistor R1 when the dc power supply device is turned off.
Based on above-mentioned direct current energy supply device, the theory of operation that specifically realizes is as follows:
when a system is powered on, a DC/DC power supply is started firstly, filtering is carried out through a filter circuit, the DC110/220V voltage passes through a BUCK-BOOST circuit, a resonance circuit and an isolation transformer, the post-stage voltage is increased to about 500-700V (the specific voltage value can be confirmed according to the system), at the moment, a high-frequency energy-taking current source obtains electricity to work, the high-frequency energy-taking current source converts the DC voltage into an alternating current source signal (namely a high-frequency current source signal) through an inverter circuit, then the high-frequency current source signal of a secondary winding is induced to an AC/DC power supply module through a primary side cable by each energy-taking magnetic ring, and the AC/DC power supply module supplies power for a corresponding power module.
In the embodiment, the high-frequency energy-taking current source is realized through the high-frequency inverter circuit, the wide-range input requirement is met, the voltage input range is 200-1500 VDC, the output is a high-frequency current source signal, and the high-frequency energy-taking current source has overcurrent and short-circuit protection energy supply functions.
To sum up, the utility model discloses a direct current energy supply device has solved the difficult point that does not have the power consumption of alternating current station and supply energy design among the direct current distribution network system, send the ability mode to realize through the high frequency insulating, the insulating requirement of system, device simple structure, interference killing feature are strong, with low costs, the reliability is high, the configuration is nimble, but the wide application is in 10kV and above medium voltage direct current distribution network system. The utility model discloses a direct current energy supply device can satisfy the demand of direct current energy supply, can realize again insulating, the insulating requirement of system to ground, is particularly suitable for using in the energy supply system of the quick direct current switch that has power module or circuit breaker, but not limited to direct current switch uses the occasion, also can apply to flexible direct current transmission system.
The BOOST circuit in this embodiment is implemented by a BUCK-BOOST circuit, and as another implementation, may also be implemented by a BOOST circuit, as shown in fig. 2-2, where the BOOST circuit includes an inductor L1, a controllable switch S5, and a diode D5. In addition, the inverter circuit in this embodiment may also be implemented by using an H-bridge inverter circuit, as shown in fig. 2-2, the H-bridge inverter circuit includes a first bridge arm formed by controllable switches S1 and S2, and a second bridge arm formed by controllable switches S3 and S4.
In the DC/DC power supply shown in fig. 2-1, a filter circuit is used to remove voltage ripples, and if the ripple component in the output waveform is not large, the filter circuit may not be used, and the input end of the boost circuit is directly connected to the DC energy storage device or the DC power supply, as shown in fig. 2-2.
Direct current switch embodiment:
the embodiment provides a direct current switch, including the main branch road, shift the branch road, power consumption branch road and direct current energy supply device, wherein, the main branch road, shift branch road and energy absorption branch road are as shown in fig. 3, be provided with mechanical switch CB on the main branch road, the main branch road is parallelly connected with shifting the branch road, be provided with resonance electronic switch on shifting the branch road, vibrate electric capacity C, pressure-bearing electronic switch unit, vibrate inductance L, resonance electronic switch includes two reverse series connection's IGBT (T21, T22), and every IGBT reverse parallel connection has the diode, resonance electronic switch and the both ends of vibrating electric capacity C are parallelly connected with voltage limiting arrester F1, be used for limiting resonance electronic switch and the terminal voltage of vibrating electric capacity C, in order to protect resonance electronic switch.
The pressure-bearing electronic switch unit comprises 7 electronic switches (1T1, 1T2, … and 1T7) with bidirectional conduction functions, the structures of the electronic switches are the same as those of the resonant electronic switches, and each electronic switch is connected with a corresponding voltage-limiting lightning arrester (1F1, 1F2, … and 1F7) in parallel and used for limiting the terminal voltage of the electronic switch so as to protect the electronic switch. And the two ends of the pressure-bearing electronic switch unit are connected in parallel with energy absorption branches, and energy consumption arresters F2 are arranged on the energy absorption branches and used for absorbing current on the transfer branches when the terminal voltage of the pressure-bearing electronic switch unit reaches the trigger voltage value of the energy consumption arresters.
The structure of the direct current energy supply device is shown in fig. 4, and comprises a DC/DC power supply, a high-frequency energy-taking current source DY (namely an alternating current source), and 7 AC/DC power supply modules DY1, DY2, …, DY7 and 7 energy-taking magnetic rings. The input end of the DC/DC power supply is used for connecting a direct-current energy storage device or a direct-current power supply, and the output end of the DC/DC power supply is connected with the input end of a high-frequency energy-taking current source (an alternating current source) on one hand and provides a direct-current source for the high-frequency energy-taking current source; on the other hand, the output end of the DC/DC power supply is also connected to an oscillating capacitor C on the transfer branch circuit to pre-charge the oscillating capacitor C and provide a resonant voltage for the resonant circuit.
The high-frequency energy-taking current source is used for converting a direct current source into an alternating current source, the output end of the high-frequency energy-taking current source is connected with penetrating cables x1 and x2, 7 energy-taking magnetic rings penetrate through the penetrating cables x1 and x2 to achieve energy taking and induce the energy-taking to secondary windings, the secondary windings of the energy-taking magnetic rings are connected with the input end of each AC/DC power supply module, and the output end of each AC/DC power supply module is used for supplying power to one or two IGBT drivers in the electronic switch shown in the figure 3. Further, the AC/DC power supply modules may not have equal potentials.
The direct-current energy supply device in the embodiment realizes two types of energy supply, wherein one type of energy supply is that a direct-current source is output through a DC/DC power supply, and then the direct-current source, the energy-taking magnetic ring and the AC/DC power supply module sequentially supply energy for the work of each electronic switch; and the other type of energy supply is to output a direct current source through a DC/DC power supply, pre-charge an oscillating capacitor C on the transfer branch and provide a resonant voltage for a resonant tank formed on the transfer branch. The following description is made in conjunction with the operation principle of the dc switch:
firstly, a direct-current energy supply device is used for pre-charging an oscillating capacitor C, when the system current needs to be switched off, a mechanical switch CB is switched off firstly, the mechanical switch CB is subjected to arc discharge due to the fact that the capacity of switching off the direct current is not available, when the mechanical switch CB is detected to be switched off to a pressure-bearing open distance, IGBTs in resonant electronic switches are controlled to be conducted, and the IGBTs in the electronic switches (1T1, 1T2, … and 1T7) are all conducted; the voltage of the oscillating capacitor C forms a resonant loop through IGBTs in a resonant electronic switch (T21, T22) -a mechanical switch CB-an oscillating inductor L-an electronic switch (1T1, 1T2, … and 1T7), when a resonant current and a system current flowing through the mechanical switch CB are superposed to form a superposed current, when the superposed current generates a current zero crossing point, an arc extinguishing of the mechanical switch CB is blocked, the IGBT in the resonant electronic switch and the electronic switch are all turned off, most of the system current is transferred to an energy consumption lightning arrester F2 on an energy absorption branch, and a small part of the system current is absorbed by the voltage limiting lightning arrester (F1, 1F1, 1F2, … and 1F 7). After the breaking is finished, the direct current energy supply device is used for pre-charging the oscillation capacitor C, and the next breaking preparation is carried out.
The utility model discloses a direct current switch utilizes direct current energy supply device to supply power for the power module in direct current switch, and direct current energy supply device is applicable to the direct current that does not provide the power consumption of alternating current station and joins in marriage network system, and this direct current energy supply device passes through DC/DC power supply direct current of direct current energy storage equipment or direct current power supply in proper order through contravariant, resonance, isolation vary voltage and rectification at first, realizes former secondary side electrical isolation, outputs the direct current signal of suitable voltage level, satisfies high, low pressure side insulation isolation requirement simultaneously; and finally, the AC/DC power supply module utilizes the energy taking magnetic ring to take energy from the AC current source for supplying power to a power module in the DC switch. The utility model discloses a but the wide application is in 10kV-35 kV's direct current distribution network.
The specific implementation process of the DC/DC power supply in this embodiment refers to the above embodiment of the power supply device, which has already been clearly and completely described in this embodiment, and this embodiment is not described again.
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 scope of the claims of the present invention.
Claims (9)
1. A dc power supply for a dc switch, comprising:
the DC/DC power supply comprises an inverter circuit, a resonance circuit, an isolation transformer and a rectification circuit, wherein the inverter circuit, the resonance circuit, the isolation transformer and the rectification circuit are sequentially connected in series, and the input end of the inverter circuit is used for connecting a direct-current energy storage device or a direct-current power supply;
the input end of the alternating current source is connected with the rectifying circuit and is used for converting a direct current source output by the rectifying circuit into an alternating current source, and the output end of the alternating current source is connected with a feed-through cable;
the energy taking magnetic rings are arranged on the through cables in a penetrating manner, and the through cables are used as primary windings of the energy taking magnetic rings; the output end of each AC/DC power supply module is used for supplying power to one power module in the direct current switch.
2. The DC power supply device of the DC switch of claim 1, wherein the DC/DC power supply further comprises a voltage boost circuit, an input terminal of the voltage boost circuit is used for connecting the DC energy storage device or the DC power supply, and an output terminal of the voltage boost circuit is connected to an input terminal of the inverter circuit.
3. The dc power supply of the dc switch of claim 2, further comprising:
and the filter circuit comprises a filter inductor and a filter capacitor, the filter inductor and the filter capacitor are connected in series, the series end of the filter inductor and the filter capacitor is used for being connected with the direct current energy storage equipment or the direct current power supply, and two ends of the filter capacitor are connected with the input end of the booster circuit.
4. A dc power supply device for a dc switch according to any of claims 1 to 3, wherein the output of said rectifying circuit is connected in parallel with a second capacitor, and a resistive load is connected in parallel across the second capacitor.
5. The utility model provides a direct current switch, includes main branch road, shifts branch road and power consumption branch road, it is equipped with a plurality of power module to shift to go up the cluster, its characterized in that still includes direct current energy supply device, direct current energy supply device includes:
the DC/DC power supply comprises an inverter circuit, a resonance circuit, an isolation transformer and a rectification circuit, wherein the inverter circuit, the resonance circuit, the isolation transformer and the rectification circuit are sequentially connected in series, and the input end of the inverter circuit is used for connecting a direct-current energy storage device or a direct-current power supply;
the input end of the alternating current source is connected with the rectifying circuit and is used for converting a direct current source output by the rectifying circuit into an alternating current source, and the output end of the alternating current source is connected with a feed-through cable;
the energy taking magnetic rings are arranged on the through cables in a penetrating manner, and the through cables are used as primary windings of the energy taking magnetic rings; the output end of each AC/DC power supply module is used for supplying power to one power module in the direct current switch.
6. The DC switch according to claim 5, wherein an oscillation capacitor and an oscillation inductor are further connected in series to the transfer branch, and both ends of the oscillation capacitor are connected to the output end of the rectifying circuit.
7. The dc switch of claim 6, wherein the output terminal of the rectifying circuit is connected in parallel with a second capacitor, and a resistive load is connected in parallel across the second capacitor.
8. The direct current switch according to any one of claims 5 to 7, wherein the DC/DC power supply further comprises:
and the input end of the booster circuit is used for being connected with the direct-current energy storage equipment or the direct-current power supply, and the output end of the booster circuit is connected with the input end of the inverter circuit.
9. The dc switch of claim 8, wherein the dc energizing means further comprises:
and the filter circuit comprises a filter inductor and a filter capacitor, the filter inductor and the filter capacitor are connected in series, the series end of the filter inductor and the filter capacitor is used for being connected with the direct current energy storage equipment or the direct current power supply, and two ends of the filter capacitor are connected with the input end of the booster circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922496287.2U CN211456995U (en) | 2019-12-31 | 2019-12-31 | DC switch and DC energy supply device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922496287.2U CN211456995U (en) | 2019-12-31 | 2019-12-31 | DC switch and DC energy supply device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN211456995U true CN211456995U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922496287.2U Active CN211456995U (en) | 2019-12-31 | 2019-12-31 | DC switch and DC energy supply device thereof |
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| CN (1) | CN211456995U (en) |
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Effective date of registration: 20221024 Address after: No. 4138, Sunshine Avenue, Xuchang Economic Development Zone, Henan 461000 Patentee after: Henan Xuji Power Electronics Co.,Ltd. Patentee after: XJ Group Corp. Patentee after: XJ ELECTRIC Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XJ Group Corp. Patentee before: XJ ELECTRIC Co.,Ltd. |