CN110165655B - Direct-current power supply parallel operation switching device - Google Patents
Direct-current power supply parallel operation switching device Download PDFInfo
- Publication number
- CN110165655B CN110165655B CN201910479940.6A CN201910479940A CN110165655B CN 110165655 B CN110165655 B CN 110165655B CN 201910479940 A CN201910479940 A CN 201910479940A CN 110165655 B CN110165655 B CN 110165655B
- Authority
- CN
- China
- Prior art keywords
- direct current
- power supply
- parallel operation
- current power
- switching device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002955 isolation Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a parallel operation switching device of a direct current power supply, which can realize high-current output by a parallel operation mode of a plurality of direct current power supplies, can realize high-voltage output by a serial operation mode, can be used by a parallel operation mode or a single operation mode, has flexible combination mode, meets the requirements of diversified use and single use of a plurality of power supplies, and can ensure current sharing and voltage sharing when the plurality of direct current power supplies are output by the parallel operation mode. The invention has the following beneficial effects: the direct-current output voltage is improved in a serial parallel mode; the direct current output current is improved in a parallel connection mode; through the switching of the switch, the independent use of a plurality of direct current power supplies can be realized, the parallel operation of a plurality of direct current power supplies can also be realized, and the requirements of multi-power and multi-voltage class and parallel operation of a plurality of platforms are met.
Description
Technical Field
The invention relates to a parallel operation switching device of a direct current power supply.
Background
With the increasing demand for high-power dc power supplies, the requirements for high current and high voltage are common. When the power supply needs larger current output, the power module of a single power supply has difficulty in meeting the requirements. When the power supply needs to output more than 1000V of voltage than Direct Current (DC), the single power module is difficult to realize.
At present, the output voltage is generally raised by connecting a plurality of power modules in series inside the power supply, and the output current is increased by connecting a plurality of power modules in parallel inside the power supply. By the implementation mode, the power supply can only meet one output and cannot meet the requirements of multi-voltage, multi-power class use and multi-channel independent use.
Disclosure of Invention
The purpose of the invention is that: the requirements of multi-voltage and multi-power class use and independent use of multiple direct current power supplies are met, and current sharing and voltage equalizing during parallel operation output of multiple direct current power supplies can be guaranteed.
In order to achieve the above purpose, the technical scheme of the invention provides a direct current power supply parallel operation switching device, which comprises a group of direct current power supply groups or N groups of direct current power supply groups, wherein N is more than or equal to 2, each direct current power supply group comprises M direct current power supplies, and M is more than or equal to 2.
When each direct current power supply group comprises 2 direct current power supplies, the 2 direct current power supplies are respectively defined as a direct current power supply I and a direct current power supply II, and an output positive electrode and an output negative electrode of the direct current power supply I or the direct current power supply II are directly connected to respective output load switching devices or are connected to the respective output load switching devices again through the respective switching devices, and then the direct current power supply group also comprises 1 parallel operation bus switching device group, wherein each parallel operation bus switching device group comprises a parallel operation bus switching device I and a parallel operation bus switching device II; when each direct current power supply group comprises M direct current power supplies, M is more than or equal to 3, the 1 st direct current power supply to the M-1 st direct current power supply or the 2 nd direct current power supply to the M direct current power supply are directly connected to respective output load switching devices, or the 2 nd direct current power supply to the M-1 st direct current power supply are connected to respective output load switching devices through respective switching devices again, at the moment, M-1 parallel operation bus switching device groups are further included, and each parallel operation bus switching device group comprises a parallel operation bus switching device I and a parallel operation bus switching device II;
when the direct current power supply comprises N groups of direct current power supply groups, the direct current power supply further comprises N-1 groups of parallel operation bus switching device groups, each group of parallel operation bus switching device groups comprises a first parallel operation bus switching device and a second parallel operation bus switching device, the connection position of the direct current power supply group and a positive parallel operation bus is defined as a positive connection point, the connection position of the direct current power supply group and a negative parallel operation bus is defined as a negative connection point, the parallel operation bus switching device I of the nth group of parallel operation bus switching device group is arranged on a part, located between the positive connection point of the nth group of direct current power supply group and the positive parallel operation bus and the positive connection point of the n+1th group of direct current power supply group and the positive parallel operation bus, of the n+1th parallel operation bus, and the parallel operation bus switching device II of the nth group of parallel operation bus switching device group is arranged on a part, located between the negative connection point of the nth group of direct current power supply group and the n+1th parallel operation bus, and n=1, … and N-1.
Preferably, the switching device, the intra-group switching device, the parallel operation bus switching device I and the parallel operation bus switching device II are direct current switches or alternating current switches.
Preferably, the first parallel operation bus switching device and the second parallel operation bus switching device may be one or more phases of the same switching device connected in series or in parallel, or may be two separate switching devices.
Preferably, the direct current switch is a direct current contactor or a direct current breaker or a direct current relay or an isolated direct current knife.
Preferably, the ac switch is an ac circuit breaker or an ac isolating blade.
Preferably, the ac circuit breaker or the ac isolating blade is connected in one phase only, or the multiple phases are connected in parallel as one phase, or the multiple phases are connected in series as one phase.
Preferably, a current sensor and a voltage sensor are installed on an output loop of each direct current power supply and an output loop formed after the parallel operation of a plurality of direct current power supplies, and are used for detecting the current and the voltage of each direct current power supply and the current and the voltage of the parallel operation of the plurality of direct current power supplies and feeding back the current and the voltage to the direct current power supplies in the parallel operation.
Preferably, all the direct current power supplies adopt a master-slave operation mode, 1 direct current power supply is used as a master machine, other direct current power supplies are used as slaves, current instructions are the same, the slaves work in the current source mode, current instruction changes of the master machine are tracked, current and voltage values of an output loop formed after parallel operation of a plurality of direct current power supplies are fed back, accurate output of voltage and current is achieved through double closed loop control of current and voltage, and meanwhile voltage equalizing and current equalizing of output of each direct current power supply in parallel operation are achieved through multi-path closed loop control of current and voltage values of the output loop of each direct current power supply.
The invention can realize large current output by a parallel operation mode of a plurality of direct current power supplies, can realize large voltage output by a serial parallel operation mode of a plurality of direct current power supplies, can realize large current and large voltage output by a parallel operation mode of a plurality of groups after the parallel operation mode of the plurality of direct current power supplies are connected in series, can be used by the parallel operation mode of the plurality of direct current power supplies, can also be used independently, has flexible combination mode, meets the requirements of diversified use and independent use of the plurality of power supplies, and can ensure current sharing and voltage sharing when the parallel operation of the plurality of direct current power supplies is carried out. The invention has the following beneficial effects:
1) The direct-current output voltage is improved in a serial parallel mode;
2) The direct current output current is improved in a parallel connection mode;
3) The switch can realize the independent use of a plurality of direct current power supplies, and also can realize the use of a plurality of direct current power supplies in a mode of parallel connection or parallel-serial combination, thereby meeting the requirements of parallel use of multiple voltages and multiple power levels and multiple platforms;
4) The accuracy of parallel operation output voltage and current value is ensured through multiple closed-loop control, and the voltage equalizing and current equalizing output of each direct current power supply are ensured at the same time, so that the use safety is ensured.
Drawings
FIG. 1 shows a DC power supply parallel switching device suitable for a DC power supply group consisting of 2 DC power supplies; a1 and A2 are switching devices respectively connected with a positive parallel operation bus and a negative parallel operation bus of a direct current power supply by a positive electrode and a negative electrode respectively; a3 and A4 are switching devices respectively connected with a positive parallel operation bus and a negative parallel operation bus by a positive pole and a negative pole of a direct current power supply respectively; a5 is an in-group switching device in the direct current power supply group, which is directly connected with a first negative electrode of the direct current power supply and a second positive electrode of the direct current power supply; a9 and A10 are parallel operation bus switching device I and parallel operation bus switching device II in the same parallel operation bus switching device group respectively.
Fig. 2 is a schematic diagram of a dc power supply parallel operation switching device suitable for a dc power supply group formed by 3 dc power supplies, in which an output positive electrode and an output negative electrode of a dc power supply two are connected to respective output load switching devices via respective switching devices (load switching devices are not shown in the figure, and are the same as the following);
FIG. 3 is a schematic diagram of a DC power supply parallel switching device suitable for use with 2 DC power supply sets, wherein each DC power supply set is composed of 2 DC power supplies; the output positive electrode and the output negative electrode of the direct current power supply II and the direct current power supply III are connected with respective output load switching devices through respective switching devices;
FIG. 4 is a schematic diagram of a DC power supply parallel switching device suitable for use with a DC power supply composed of 2 DC power supply groups, wherein each DC power supply group is composed of 2 DC power supplies, and the output anodes and output cathodes of the DC power supplies II and III are directly connected with respective output load switching devices; FIG. 4 is a schematic circuit diagram of a circuit used in an embodiment;
fig. 5 shows a parallel switching device for dc power supply, which is suitable for use in a parallel switching device for dc power supply comprising 2 dc power supply groups, wherein each dc power supply group comprises 3 dc power supplies, and the output positive electrode and the output negative electrode of the dc power supplies two to five are connected to respective output load switching devices via respective switching devices.
Detailed Description
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
The invention relates to a direct current power supply parallel switching device which consists of a group of switching devices or a plurality of groups of switching devices. The switching device used in the present invention may be a direct current switch, for example: a dc contactor or a dc breaker or a dc relay or an isolated dc blade. The switching device used in the present invention may also be an ac switch, for example: the alternating current circuit breaker or the alternating current isolation switch blade can be connected into one phase only, can be connected into one phase in parallel, and can be connected into one phase in series. When the switch device adopts a direct current breaker or an alternating current contactor, the switch device can allow on-load opening or closing; when the switching device employs a dc relay or a dc blade or an ac isolating blade, on-load opening or closing is generally not allowed.
As shown in fig. 4, when a group of switching devices is employed, at least switching devices A1, A2, A3, A4, and A5 are included. When the switching device A5 is opened, the switching device A1 and the switching device A2 are closed, and the switching device A3 and the switching device A4 are opened, the dc power supply 1 and the dc power supply 2 are used alone. When the switching device A5 is opened, the switching device A1 and the switching device A2 are closed, the switching device A3 and the switching device A4 are also closed, and the dc power supply 1 and the dc power supply 2 are used in parallel. At this time, "parallel operation bus 1+" and "parallel operation bus 1-" output maximum current may be the sum of currents output by the direct current power supply 1 and the direct current power supply 2 separately. When the switching device A5 is closed, the switching device A1 and the switching device A4 are closed, the switching device A2 and the switching device A3 are opened, the direct current power supply 1 and the direct current power supply 2 are used in a parallel connection mode in series, and at the moment, the maximum voltages output by the parallel connection bus 1+ and the parallel connection bus 1-can be the sum of the voltages independently output by the direct current power supply 1 and the direct current power supply 2.
As shown in fig. 4, when two sets of switching devices are employed, at least switching devices A1, A2, A3, A4, A5, A6, A7, A8, A9, a10, a11, and a12 are included. Switching devices A1, A2, A3, A4, and A5 are one set of switches, and switching devices A6, A7, A8, A9, and a10 are another set of switches. When the switching device A11 and the switching device A12 are disconnected, the direct current power supply 1, the direct current power supply 2, the direct current power supply 3 and the direct current power supply 4 can be respectively used in a serial parallel operation mode or a parallel operation mode; when A5 and A10 are opened, A3, A4, A6 and A7 are opened, other switches are closed, and the direct current power supplies 1 to 4 can be respectively and independently used. When the switching device a11 and the switching device a12 are closed, the two dc power supply groups may be connected in parallel after being connected in parallel in the same serial-parallel connection mode, or may be connected in any multiple parallel connection mode (in this case, A5 and a10 are disconnected).
And each direct current power supply output loop and each parallel operation output loop are provided with a current sensor and a voltage sensor which are used for detecting the current and the voltage of each branch and each parallel operation loop and feeding back the current and the voltage to the direct current power supply in parallel operation, and optical fiber transmission can be adopted. The direct current power supply can adopt a master-slave operation mode, 1 direct current power supply is used as a master machine, other direct current power supplies are used as slave machines, the current instructions are the same, and the slave machines can work in a current source mode to track the current instruction change of the master machine. And through the current and voltage values of the parallel operation loop fed back, accurate output of the voltage and the current is realized by adopting double closed-loop control of the current and the voltage. And through the current and voltage values of each branch circuit fed back, the voltage and current equalizing of each direct current power supply output in parallel operation is realized by adopting multi-path closed-loop control. The following specific examples of the output parameters of the dc power sources 1 to 4 are as follows: direct current voltage DC1000V, direct current DC2000A.
Example one (4-way independent output):
the switching devices A3, A4 and A5 of the direct current power supply group 1 are opened, and the switching devices A1 and A2 are closed; a6, A7 and A10 of the direct current power supply group 2 are opened, and switching devices A8 and A9 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are disconnected. At this time, the direct current power supplies 1 to 4 form 4 paths of independent outputs, wherein the direct current power supply 1 outputs via the parallel operation bus 1+ and the parallel operation bus 1- "and the direct current power supply 4 outputs via the parallel operation bus 2+ and the parallel operation bus 2-". Output parameters of the dc power supply 1 to the dc power supply 4: direct current voltage DC1000V, direct current DC2000A.
Example two (1-way series, 2-way independent output):
the switching devices A2, A3 and A5 of the direct current power supply group 1 are opened, and the switching device A1 and the switching device A4 are closed; the switching devices A6, A7 and A10 of the direct current power supply group 2 are opened, and the switching device A8 and the switching device A9 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are disconnected. At this time, the dc power supply 1 and the dc power supply 2 are connected in series and output, and output parameters: outputting DC voltage DC2000V and DC current DC2000A between the parallel operation bus 1+ and the parallel operation bus 1-; the direct current power supply 3 and the direct current power supply 4 are respectively and independently output, and the output parameters are as follows: direct current voltage DC1000V, direct current DC2000A.
Example three (1-way parallel, 2-way independent output):
the switching device A5 of the direct current power supply group 1 is opened, and the switching devices A1 to A4 are closed; the switching devices A6, A7 and A10 of the direct current power supply group 2 are opened, and the switching device A8 and the switching device A9 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are disconnected. At this time, the direct current power supply 1 and the direct current power supply 2 are connected in parallel and output, and output parameters are as follows: and a direct-current voltage DC1000V and a direct-current DC4000A are output between the parallel operation buses 1 < + > and the parallel operation buses 1 < - >. The direct current power supply 3 and the direct current power supply 4 are respectively and independently output, and the output parameters are as follows: direct current voltage DC1000V, direct current DC2000A.
Example four (2-way series output):
the switching device A2 and the switching device A3 of the direct current power supply group 1 are opened, and the switching devices A1, A4 and A5 are closed; the switching device A7 and the switching device A8 of the direct current power supply group 2 are opened, and the switching devices A6, A9 and A10 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are disconnected. At this time, the dc power supply 1 and the dc power supply 2 are connected in series and output, and output parameters: outputting DC voltage DC2000V and DC current DC2000A between the parallel operation bus 1+ and the parallel operation bus 1-; the direct current power supply 3 and the direct current power supply 4 are connected in series and output, and output parameters are as follows: and a direct-current voltage DC2000V and a direct-current DC2000A are output between the parallel operation bus 2+ and the parallel operation bus 2- ".
Fifth example (2-way parallel output):
the switching device A5 of the direct current power supply group 1 is opened, and the switching devices A1 to A4 are closed; the switching device A10 of the direct current power supply group 2 is opened, and the switching devices A6-A9 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are disconnected. At this time, the direct current power supply 1 and the direct current power supply 2 are connected in parallel and output, and output parameters are as follows: the direct-current voltage DC1000V and the direct-current DC4000A are output between the parallel operation bus 1+ and the parallel operation bus 1-; the direct current power supply 3 and the direct current power supply 4 are connected in parallel and output, and output parameters are as follows: and a direct-current voltage DC1000V and a direct-current DC4000A are output between the parallel operation bus 2+ and the parallel operation bus 2-.
Example six (1-way series, 1-way parallel output):
the switching device A2 and the switching device A3 of the direct current power supply group 1 are opened, and the switching devices A1, A4 and A5 are closed; the switching device A10 of the direct current power supply group 2 is opened, and the switching devices A6-A9 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are disconnected. At this time, the dc power supply 1 and the dc power supply 2 are connected in series and output, and output parameters: and a direct-current voltage DC2000V and a direct-current DC2000A are output between the parallel operation buses 1 < + > and the parallel operation buses 1 < - >. The direct current power supply 3 and the direct current power supply 4 are connected in parallel and output, and output parameters are as follows: and a direct-current voltage DC1000V and a direct-current DC4000A are output between the parallel operation bus 2+ and the parallel operation bus 2-.
Example seven (1 way 2 series 2 parallel outputs):
the switching device A2 and the switching device A3 of the direct current power supply group 1 are opened, and the switching devices A1, A4 and A5 are closed; the switching device A7 and the switching device A8 of the direct current power supply group 2 are opened, and the switching devices A6, A9 and A10 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are closed. At this time, the direct current power supply 1 and the direct current power supply 2 are connected in series and connected in parallel, the direct current power supply 3 and the direct current power supply 4 are connected in series and connected in parallel, then two groups of direct current power supply groups are connected in parallel and output, and output parameters are as follows: and a direct-current voltage DC2000V and a direct-current DC4000A are output between the parallel operation buses 1 & + & gt and the parallel operation buses 1- & gt or between the parallel operation buses 2+ & gt and the parallel operation buses 2- & gt.
Example eight (1 way 4 and output):
the switching device A5 of the direct current power supply group 1 is opened, and the switching devices A1 to A4 are closed; the switching device A10 of the direct current power supply group 2 is opened, and the switching devices A6-A9 are closed; the switching device A11 and the switching device A12 of the parallel operation bus are closed. At this time, the direct current power supply 1 and the direct current power supply 2 are connected in parallel, the direct current power supply 3 and the direct current power supply 4 are connected in parallel, then the two groups of direct current power supplies are connected in parallel again for output, and output parameters are as follows: and a direct-current voltage DC1000V is output between the parallel operation buses 1 & + & gt and 1- & gt or between the parallel operation buses 2 & + & gt and 2- & gt, and the direct-current DC8000A is output.
Claims (8)
1. The parallel operation switching device of the direct current power supply comprises a group of direct current power supply groups or N groups of direct current power supply groups, wherein N is more than or equal to 2, each direct current power supply group comprises M direct current power supplies, and M is more than or equal to 2, and the parallel operation switching device is characterized in that the output negative electrode of the (M-1) th direct current power supply in each direct current power supply group is directly connected with the output positive electrode of the (m=2, …, M) th direct current power supply through a switch device in the group, and the parallel operation switching device also comprises a positive parallel operation bus and a negative parallel operation bus, and the output positive electrode and the output negative electrode of all the direct current power supplies in the direct current power supply groups are respectively connected with the positive parallel operation bus and the negative parallel operation bus through respective switch devices;
when each direct current power supply group comprises 2 direct current power supplies, the 2 direct current power supplies are respectively defined as a direct current power supply I and a direct current power supply II, and an output positive electrode and an output negative electrode of the direct current power supply I or the direct current power supply II are directly connected to respective output load switching devices or are connected to the respective output load switching devices again through the respective switching devices, and then the direct current power supply group also comprises 1 parallel operation bus switching device group, wherein each parallel operation bus switching device group comprises a parallel operation bus switching device I and a parallel operation bus switching device II; when each direct current power supply group comprises M direct current power supplies, M is more than or equal to 3, the 1 st direct current power supply to the M-1 st direct current power supply or the 2 nd direct current power supply to the M direct current power supply are directly connected to respective output load switching devices, or the 2 nd direct current power supply to the M-1 st direct current power supply are connected to respective output load switching devices through respective switching devices again, at the moment, M-1 parallel operation bus switching device groups are further included, and each parallel operation bus switching device group comprises a parallel operation bus switching device I and a parallel operation bus switching device II;
when the direct current power supply comprises N groups of direct current power supply groups, the direct current power supply further comprises N-1 groups of parallel operation bus switching device groups, each group of parallel operation bus switching device groups comprises a first parallel operation bus switching device and a second parallel operation bus switching device, the connection position of the direct current power supply group and a positive parallel operation bus is defined as a positive connection point, the connection position of the direct current power supply group and a negative parallel operation bus is defined as a negative connection point, the parallel operation bus switching device I of the nth group of parallel operation bus switching device group is arranged on a part, located between the positive connection point of the nth group of direct current power supply group and the positive parallel operation bus and the positive connection point of the n+1th group of direct current power supply group and the positive parallel operation bus, of the n+1th parallel operation bus, and the parallel operation bus switching device II of the nth group of parallel operation bus switching device group is arranged on a part, located between the negative connection point of the nth group of direct current power supply group and the n+1th parallel operation bus, and n=1, … and N-1.
2. The parallel operation switching device of claim 1, wherein the switching device, the in-group switching device, the first parallel operation bus switching device and the second parallel operation bus switching device are direct current switches or alternating current switches.
3. The parallel switching device of claim 1, wherein the first parallel bus switching device and the second parallel bus switching device are respectively one or more phases of the same switching device connected in series or in parallel, or are two separate switching devices.
4. A parallel operation switching device for a direct current power supply according to claim 2, wherein the direct current switch is a direct current contactor or a direct current breaker or a direct current relay or an isolated direct current knife.
5. The parallel operation switching device of claim 2, wherein the ac switch is an ac circuit breaker or an ac isolation blade.
6. The parallel switching device of claim 5, wherein the ac circuit breaker or the ac isolating blade is connected in one phase only, or in parallel in multiple phases, or in series in multiple phases.
7. The switching device for parallel operation of a dc power supply according to claim 1, wherein a current sensor and a voltage sensor are installed in an output loop of each dc power supply and an output loop formed after the parallel operation of a plurality of dc power supplies, and the current and the voltage of each dc power supply and the current and the voltage of the plurality of dc power supplies after the parallel operation are detected and fed back to the dc power supply during the parallel operation.
8. The direct current power supply parallel operation switching device as claimed in claim 6, wherein all direct current power supplies adopt a master-slave operation mode, 1 direct current power supply is used as a master machine, other direct current power supplies are used as slaves, current instructions are the same, the slaves work in a current source mode, current instruction changes of the master machine are tracked, current and voltage values of an output loop formed after parallel operation of a plurality of direct current power supplies are fed back, accurate output of voltage and current is achieved through current and voltage double closed loop control, and meanwhile voltage equalizing and current equalizing of output of each direct current power supply in parallel operation are achieved through current and voltage values of each direct current power supply fed back through multi-path closed loop control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479940.6A CN110165655B (en) | 2019-06-04 | 2019-06-04 | Direct-current power supply parallel operation switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479940.6A CN110165655B (en) | 2019-06-04 | 2019-06-04 | Direct-current power supply parallel operation switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110165655A CN110165655A (en) | 2019-08-23 |
| CN110165655B true CN110165655B (en) | 2024-01-30 |
Family
ID=67627189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910479940.6A Active CN110165655B (en) | 2019-06-04 | 2019-06-04 | Direct-current power supply parallel operation switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110165655B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538047A (en) * | 1991-07-25 | 1993-02-12 | Fuji Electric Co Ltd | Power source system |
| JPH06189469A (en) * | 1992-12-18 | 1994-07-08 | Toshiba Corp | Uninterruptible power supply |
| JP2008193853A (en) * | 2007-02-07 | 2008-08-21 | Fuji Electric Systems Co Ltd | Overvoltage protection device of dc parallel power supply apparatus |
| EP2173024A2 (en) * | 2008-10-04 | 2010-04-07 | Diehl AKO Stiftung & Co. KG | Switching device with a boost converter and inverter switch with such a switching device |
| CN202333963U (en) * | 2011-11-22 | 2012-07-11 | 重庆市电力公司检修分公司 | Direct-current dual power intelligent seamless switching device |
| CN102842957A (en) * | 2012-09-28 | 2012-12-26 | 重庆泊津科技有限公司 | Intelligent seamless switching device for double direct-current operation power supplies of converting station |
| CN105356757A (en) * | 2015-11-19 | 2016-02-24 | 华中科技大学 | Unidirectional direct current-direct current autotransformer |
| CN106972479A (en) * | 2017-04-21 | 2017-07-21 | 贵州电网有限责任公司 | The design method and high-low pressure dc circuit breaker of a kind of direct-current grid |
| CN109193610A (en) * | 2018-09-28 | 2019-01-11 | 阳光电源股份有限公司 | A kind of shutdown control system and method |
| CN109194130A (en) * | 2018-09-06 | 2019-01-11 | 南京南瑞继保电气有限公司 | A kind of Unidirectional direct-current voltage changer and system and its control method |
| CN209844551U (en) * | 2019-06-04 | 2019-12-24 | 上海电器科学研究所（集团）有限公司 | Direct-current power supply parallel operation switching device |
-
2019
- 2019-06-04 CN CN201910479940.6A patent/CN110165655B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538047A (en) * | 1991-07-25 | 1993-02-12 | Fuji Electric Co Ltd | Power source system |
| JPH06189469A (en) * | 1992-12-18 | 1994-07-08 | Toshiba Corp | Uninterruptible power supply |
| JP2008193853A (en) * | 2007-02-07 | 2008-08-21 | Fuji Electric Systems Co Ltd | Overvoltage protection device of dc parallel power supply apparatus |
| EP2173024A2 (en) * | 2008-10-04 | 2010-04-07 | Diehl AKO Stiftung & Co. KG | Switching device with a boost converter and inverter switch with such a switching device |
| CN202333963U (en) * | 2011-11-22 | 2012-07-11 | 重庆市电力公司检修分公司 | Direct-current dual power intelligent seamless switching device |
| CN102842957A (en) * | 2012-09-28 | 2012-12-26 | 重庆泊津科技有限公司 | Intelligent seamless switching device for double direct-current operation power supplies of converting station |
| CN105356757A (en) * | 2015-11-19 | 2016-02-24 | 华中科技大学 | Unidirectional direct current-direct current autotransformer |
| WO2017084120A1 (en) * | 2015-11-19 | 2017-05-26 | 华中科技大学 | Unidirectional direct current-direct current autotransformer, and high-low voltage side fault isolation method therefor |
| CN106972479A (en) * | 2017-04-21 | 2017-07-21 | 贵州电网有限责任公司 | The design method and high-low pressure dc circuit breaker of a kind of direct-current grid |
| CN109194130A (en) * | 2018-09-06 | 2019-01-11 | 南京南瑞继保电气有限公司 | A kind of Unidirectional direct-current voltage changer and system and its control method |
| CN109193610A (en) * | 2018-09-28 | 2019-01-11 | 阳光电源股份有限公司 | A kind of shutdown control system and method |
| CN209844551U (en) * | 2019-06-04 | 2019-12-24 | 上海电器科学研究所（集团）有限公司 | Direct-current power supply parallel operation switching device |
Non-Patent Citations (1)
| Title |
|---|
| 基于模块组合式LLC谐振变换器的直流配电网研究;吴鸣;宋振浩;洪婴;张海;郑楠;;电气应用(第10期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110165655A (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10568232B2 (en) | Modular uninterruptible power supply apparatus and methods of operating same | |
| US11322926B2 (en) | Hybrid DC circuit breaker | |
| EP3560749A1 (en) | Charging pile system | |
| CN104009516B (en) | Control method and the device of power supply assembly | |
| CN109167390B (en) | Photovoltaic power generation inverter system | |
| CN112467839B (en) | Battery cluster management device and battery energy storage system | |
| US20220239115A1 (en) | Method and Apparatus for Electrical Switching | |
| KR20070108211A (en) | Submarine direct current network | |
| DK180691B1 (en) | Controlling on-time of energy modules of an energy storage | |
| CN110661042A (en) | Battery management system and energy storage power station | |
| JP2015186437A (en) | Power source system | |
| CN108736531A (en) | Power battery pack, composite power source, control method and vehicle | |
| CN110165655B (en) | Direct-current power supply parallel operation switching device | |
| CN209844551U (en) | Direct-current power supply parallel operation switching device | |
| CN211127291U (en) | Helicopter direct current distribution system | |
| CN210839058U (en) | Double-power switching device | |
| WO2016159517A1 (en) | H-bridge multilevel inverter | |
| CN216774297U (en) | High-voltage box of medium-high voltage direct-hanging energy storage system | |
| CN115765134A (en) | Aircraft unified power supply and distribution redundancy system | |
| EP4304042A1 (en) | Energy storage system, control method for energy storage system, and photovoltaic power generation system | |
| WO2022126601A1 (en) | Photovoltaic system and power system | |
| CN114362159A (en) | High-voltage box of medium-high voltage direct-hanging energy storage system | |
| EP3136536B1 (en) | Power control device, power control method, and power control system | |
| CN113949147A (en) | Lithium battery energy storage main control system based on redundant double auxiliary power supplies | |
| JP2023034725A (en) | Vessel power source system and method for using vessel power source system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |