CN108614414A - Large-scale data center generating set dynamic redundancy control system - Google Patents
Large-scale data center generating set dynamic redundancy control system Download PDFInfo
- Publication number
- CN108614414A CN108614414A CN201810581943.6A CN201810581943A CN108614414A CN 108614414 A CN108614414 A CN 108614414A CN 201810581943 A CN201810581943 A CN 201810581943A CN 108614414 A CN108614414 A CN 108614414A
- Authority
- CN
- China
- Prior art keywords
- resistance
- capacitance
- controller
- integrated circuit
- triode
- 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.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 230000007717 exclusion Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
Abstract
The invention discloses large-scale data center generating set dynamic redundancy control systems, include the one-of-a-kind system of several groups parallel connection, each one-of-a-kind system includes a generator, generate electricity mechatronics middle-placed switch cabinet, it is electrically connected a master controller and a spare controller simultaneously, there are one Centralized Monitoring cabinets for connection jointly for each controller and each spare controller；Centralized Monitoring cabinet includes display screen, interchanger and PLC, and interchanger is electrically connected with each controller and each spare controller, and display screen and interchanger are electrically connected with PLC, and loud speaker is additionally provided in Centralized Monitoring cabinet, and loud speaker is electrically connected with voice module.When master controller of the present invention breaks down, redundant manipulator automatic seamless take over unit ensure that the reliability, stability and safety of large-scale data center generating set multi-machine parallel connection system；Voice output is carried out by sound circuit, is convenient for fast reaction, processing and exclusion device failure, improve the reliability of system immediately.
Description
Technical field
The present invention relates to gen-set control system fields, and in particular to a kind of large-scale data center generating set dynamic is superfluous
Remaining control system.
Background technology
The generating set power supply at general data center is that multi-machine parallel connection system will be automatic when breaking down for a certain
Parallel system is exited in shutdown, and whole system supplying power for outside ability will decline, and influence reliability and the safety of whole system.It is single
The control principle of machine system is exactly single formula control system, and controller, software function, the auxiliary device etc. in system are all single
, without redundancy backup；System can cause separate unit control system to fail in controller or some device fails,
Unit autostop exits parallel system, and system reduces system external power supply capacity after certain equipment logs off, and influences
The actual use of total system.Stability of control system is directly related to working efficiency and the safety of unit operation；Not only
In this way, in existing control system, it can be all equipped with phonetic function, to staff's progress voice prompt at scene, but by
In existing sound circuit, the operating voltage typically ± 15V of internal integrated circuit, and work as the feelings that live voltage fluctuates
Under condition, it is easy for the case where breakdown integrated circuit occur, this reduces the reliabilities of system.
Invention content
The present invention is above-mentioned in order to overcome the shortcomings of, provides in a kind of reliability, stability and safe large data
Heart generating set dynamic redundancy control system.
The present invention is achieved through the following technical solutions above-mentioned purpose：
Large-scale data center generating set dynamic redundancy control system, includes the one-of-a-kind system of several groups parallel connection, Mei Gedan
Machine system includes a generator, generator electrical connection there are one middle-placed switch cabinet, generator also be electrically connected there are one master controller with
There are one Centralized Monitoring cabinets for connection jointly for one spare controller, each controller and each spare controller；
Centralized Monitoring cabinet includes display screen, interchanger and PLC, and interchanger is electrically connected with each controller and each spare controller
It connects, display screen and interchanger are electrically connected with PLC；
In the system, when increasing a spare controller for master controller fault, dynamic monitoring system data are seamless
The control system of take over unit, makes it not exit parallel system in multi-machine parallel connection system；
Wherein, use hardware redundancy, the identical hardware of two sets of functions constitutes redundancy core, two circuits respectively receive with
The real time data for handling each self-loop controls active and standby controller by different programs, and two controllers have master-slave, normally
In the case of back-up circuit will not export control signal, pass through Hot Spare and realize that data are synchronous and master-slave swap；
Software redundancy is used, two controller states, redundancy control are monitored in real time by CAN communication between active and standby controller
Device processed by CAN bus can periodic photos and sending messages to primary controller, it is accurate at any time to assess the working condition of primary controller
It is standby to take over primary controller, and realize the backup of data, read and monitor to automatically switch when exception, ownership transfer；
In conclusion improving the stabilization, reliable of unit parallel system to greatest extent by hardware redundancy, software redundancy
Property, synchronizing characteristics and seamless pipe characteristic in controller redundancy keep parallel system more efficiently more intelligent.
Loud speaker is additionally provided in the Centralized Monitoring cabinet, loud speaker is electrically connected with voice module, and voice module includes voice
Circuit.
Specifically, the sound circuit include integrated circuit, first resistor, second resistance, 3rd resistor, the 4th resistance,
5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the first capacitance, the second capacitance, third capacitance, the 4th capacitance, the 5th
Capacitance, the 6th capacitance, the 7th capacitance, the 8th capacitance, the first diode, the second diode, the first triode and the second triode,
The model TDA2030A of integrated circuit, the first end of integrated circuit and the first capacitance connection, and pass through 3rd resistor and second
The series circuit ground connection of resistance composition, the second capacitance is in parallel with second resistance, one end of first resistor respectively with second resistance and
3rd resistor connects, the external+18V DC voltage power supplies of the other end, and by third capacity earth, and the second end of integrated circuit is logical
The series circuit ground connection of the 4th resistance and the 4th capacitance composition is crossed, and is connected by the 4th end of the 5th resistance and integrated circuit,
The third end of integrated circuit is connect by the 7th resistance eutral grounding, and with the base stage of the second triode, and the 5th end of integrated circuit is logical
External+18V the DC voltage power supplies of the 6th resistance are crossed, and are connect with the base stage of the first triode, and by the 6th capacitance and are integrated
The third end of circuit connects, the external+18V DC voltage power supplies of emitter of the first triode, and by the 5th capacity earth, the
The collector of one triode is connect with the collector of the second triode, and is connect with the 4th end of integrated circuit, the second triode
Emitter ground connection, the cathode+18V DC voltage power supplies of the first diode, the anode of the first diode and the second diode
Cathode connection, the plus earth of the second diode, the 4th end of integrated circuit pass through the string that the 8th resistance and the 7th capacitance form
Join circuit ground, and is grounded by the series circuit that the 8th capacitance and loud speaker form.
In the sound circuit, the first end input speech signal of integrated circuit, then pass through integrated circuit power amplification with
Afterwards, it is exported from the 4th end of integrated circuit, after the 8th capacitive filter, voice output is carried out by loud speaker；Meanwhile first
Diode and the second diode can carry out supply voltage voltage stabilizing pressure limiting processing, and coordinate the first triode and the two or three pole
Pipe can carry out transient state short circuit, be protected to integrated circuit when voltage is high, to further improve voice electricity
The reliability on road improves the reliability of system.
Specifically, in single one-of-a-kind system, connected by CAN communication mode between master controller and spare controller.
Specifically, the interchanger is connect with each controller and each spare controller by TCP/IP communications protocol.
Specifically, the display screen is liquid crystal display.
Specifically, there are one earthing resistance cabinets for connection jointly for each generator.
The beneficial effects of the invention are as follows：Compared with the existing technology, the present invention is when master controller breaks down, Redundant Control
Device automatic seamless take over unit, ensure that the reliability, stability and peace of large-scale data center generating set multi-machine parallel connection system
Quan Xing；Moreover, by sound circuit, reliable voice output can be carried out, consequently facilitating fast reaction, processing immediately and
The failure for excluding device processed, improves the reliability of system.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the systematic schematic diagram of the present invention；
Fig. 2 is the circuit diagram of the sound circuit of the present invention.
In figure：1. generator, 2. middle-placed switch cabinets, 3. master controllers, 4. spare controllers, 5. Centralized Monitoring cabinets, 6. ground connection electricity
Resistance cabinet, BL1. loud speakers, U1. integrated circuits, R1. first resistors, R2. second resistances, R3. 3rd resistors, the 4th resistance of R4.,
R5. the 5th resistance, the 6th resistance of R6., the 7th resistance of R7., the 8th resistance of R8., the first capacitances of C1., the second capacitances of C2., C3.
Three capacitances, the 4th capacitances of C4., the 5th capacitances of C5., the 6th capacitances of C6., the 7th capacitances of C7., the 8th capacitances of C8., VD1. the one or two
Pole pipe, the first diodes of VD2., the first triodes of VT1., the second triodes of VT2..
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As depicted in figs. 1 and 2, large-scale data center generating set dynamic redundancy control system, including several groups parallel connection
One-of-a-kind system, each one-of-a-kind system include a generator 1, and there are one middle-placed switch cabinet 2, generator 1 is also electrically connected the electrical connection of generator 1
It connects there are one master controller 3 and a spare controller 4, there are one each controller and the common connections of each spare controller 4 concentrates
Monitoring cabinet 5；Centralized Monitoring cabinet 5 includes display screen, interchanger and PLC, and interchanger is electrically connected with each controller and each spare controller 4
It connects, display screen and interchanger are electrically connected with PLC；Loud speaker BL1 is additionally provided in the Centralized Monitoring cabinet 5, loud speaker BL1 is electrically connected
It is connected to voice module, voice module includes sound circuit；The sound circuit includes integrated circuit U1, first resistor R1, second
Resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, first
Capacitance C1, the second capacitance C2, third capacitance C3, the 4th capacitance C4, the 5th capacitance C5, the 6th capacitance C6, the 7th capacitance C7, the 8th
Capacitance C8, the first diode VD1, the second diode VD2, the first triode VT1 and the second triode VT2, integrated circuit U1's
Model TDA2030A, the first end of integrated circuit U1 is connect with the first capacitance C1, and passes through 3rd resistor R3 and second resistance
The series circuit ground connection of R2 compositions, the second capacitance C2 is in parallel with second resistance R2, and one end of first resistor R1 is electric with second respectively
Resistance R2 is connected with 3rd resistor R3, the external+18V DC voltage power supplies of the other end, and is grounded by third capacitance C3, integrated circuit
The second end of U1 is grounded by the series circuit of the 4th resistance R4 and the 4th capacitance C4 compositions, and by the 5th resistance R5 and is integrated
4th end of circuit U 1 connects, the third end of integrated circuit U1 by the 7th resistance R7 ground connection, and with the base of the second triode VT2
Pole connect, the 5th end of integrated circuit U1 by the external+18V DC voltage power supplies of the 6th resistance R6, and with the first triode VT1
Base stage connection, and connect with the third end of integrated circuit U1 by the 6th capacitance C6, the emitter of the first triode VT1 is external
+ 18V DC voltage power supplies, and by the 5th capacitance C5 ground connection, the collector of the first triode VT1 and the second triode VT2's
Collector connects, and is connect with the 4th end of integrated circuit U1, the emitter ground connection of the second triode VT2, the first diode VD1
Cathode+18V DC voltage power supplies, the anode of the first diode VD1 connect with the cathode of the second diode VD2, the two or two pole
4th end of the plus earth of pipe VD2, integrated circuit U1 is connect by the series circuit of the 8th resistance R8 and the 7th capacitance C7 compositions
Ground, and be grounded by the series circuit of the 8th capacitance C8 and loud speaker BL1 compositions；In single one-of-a-kind system, master controller 3 and standby
It is connected by CAN communication mode between controller 4；The interchanger passes through TCP/ with each controller and each spare controller 4
IP communications protocol connects；The display screen is liquid crystal display；There are one earthing resistance cabinets 6 for connection jointly for each generator 1.
It is above-mentioned according to the present invention be enlightenment, through the above description, relevant staff completely can without departing from
In the range of this invention technological thought, various changes and amendments are carried out.The technical scope of this invention is not limited to
In the content on specification, it is necessary to determine its technical scope according to right.
Claims (6)
1. a kind of large-scale data center generating set dynamic redundancy control system, it is characterised in that：Include the list of several groups parallel connection
Machine system, each one-of-a-kind system include a generator, and there are one middle-placed switch cabinet, generator is also electrically connected with one for generator electrical connection
There are one Centralized Monitoring cabinets for connection jointly for a master controller and a spare controller, each controller and each spare controller；
Centralized Monitoring cabinet includes display screen, interchanger and PLC, and interchanger is electrically connected with each controller and each spare controller, is shown
Display screen and interchanger are electrically connected with PLC；
Loud speaker is additionally provided in the Centralized Monitoring cabinet, loud speaker is electrically connected with voice module, and voice module includes sound circuit.
2. generating set dynamic redundancy control system in large-scale data center according to claim 1, it is characterised in that：It is described
Sound circuit includes integrated circuit, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance,
Seven resistance, the 8th resistance, the first capacitance, the second capacitance, third capacitance, the 4th capacitance, the 5th capacitance, the 6th capacitance, the 7th electricity
Appearance, the 8th capacitance, the first diode, the second diode, the first triode and the second triode, the model of integrated circuit
TDA2030A, the first end of integrated circuit and the first capacitance connection, and the series electrical being made up of 3rd resistor and second resistance
Road is grounded, and the second capacitance is in parallel with second resistance, and one end of first resistor is connect with second resistance and 3rd resistor respectively, another
External+18V DC voltage power supplies are held, and by third capacity earth, the second end of integrated circuit passes through the 4th resistance and the 4th
The series circuit ground connection of capacitance composition, and connected by the 4th end of the 5th resistance and integrated circuit, the third end of integrated circuit
Connect by the 7th resistance eutral grounding, and with the base stage of the second triode, the 5th end of integrated circuit by the 6th resistance it is external+
18V DC voltage power supplies, and connect with the base stage of the first triode, and connected by the third end of the 6th capacitance and integrated circuit
It connects, the external+18V DC voltage power supplies of emitter of the first triode, and passes through the 5th capacity earth, the current collection of the first triode
Pole is connect with the collector of the second triode, and is connect with the 4th end of integrated circuit, the emitter ground connection of the second triode, the
Cathode+18V the DC voltage power supplies of one diode, the anode of the first diode are connect with the cathode of the second diode, and the two or two
4th end of the plus earth of pole pipe, integrated circuit is grounded by the series circuit that the 8th resistance and the 7th capacitance form, and logical
Cross the series circuit ground connection of the 8th capacitance and loud speaker composition.
3. generating set dynamic redundancy control system in large-scale data center according to claim 1, it is characterised in that：Individually
In one-of-a-kind system, connected by CAN communication mode between master controller and spare controller.
4. generating set dynamic redundancy control system in large-scale data center according to claim 1, it is characterised in that：It is described
Interchanger is connect with each controller and each spare controller by TCP/IP communications protocol.
5. generating set dynamic redundancy control system in large-scale data center according to claim 1, it is characterised in that：It is described
Display screen is liquid crystal display.
6. generating set dynamic redundancy control system in large-scale data center according to claim 1, it is characterised in that：Each hair
There are one earthing resistance cabinets for connection jointly for motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810581943.6A CN108614414A (en) | 2018-06-07 | 2018-06-07 | Large-scale data center generating set dynamic redundancy control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810581943.6A CN108614414A (en) | 2018-06-07 | 2018-06-07 | Large-scale data center generating set dynamic redundancy control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108614414A true CN108614414A (en) | 2018-10-02 |
Family
ID=63664927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810581943.6A Pending CN108614414A (en) | 2018-06-07 | 2018-06-07 | Large-scale data center generating set dynamic redundancy control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108614414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370472A (en) * | 2022-07-25 | 2022-11-22 | 福建永强力加动力设备有限公司 | Full-load peak regulation and dynamic redundancy control system of generator set for large-scale data center |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188234Y (en) * | 1994-04-05 | 1995-01-25 | 吉林电力职工大学 | Infrared intelligence voice alarm |
| JP2007060863A (en) * | 2005-08-26 | 2007-03-08 | Toa Harbor Works Co Ltd | Monitoring method for parallel operation of generator, and device thereof |
| CN2891025Y (en) * | 2005-11-29 | 2007-04-18 | 李锋祖 | Intelligent control system for home security |
| CN102185334A (en) * | 2011-04-26 | 2011-09-14 | 广东康菱动力科技有限公司 | Multiple fully-automatic large-horsepower high-speed integrated parallel and commercial power interconnection system and power supply method thereof |
| CN202050253U (en) * | 2011-04-26 | 2011-11-23 | 广东康菱动力科技有限公司 | Multiple large power high speed full-automatic integrated parallel connection and commercial power grid connection system |
| CN202995303U (en) * | 2012-09-17 | 2013-06-12 | 深圳市宏银拾科技有限公司 | Generator set parallel connection controller |
| CN203267898U (en) * | 2013-05-29 | 2013-11-06 | 上海电机学院 | Voice prompter |
| CN203352196U (en) * | 2013-08-05 | 2013-12-18 | 广东西电动力科技股份有限公司 | Power supply system for parallel operation of multiple large-power high-voltage diesel generator sets |
| CN103944181A (en) * | 2013-12-18 | 2014-07-23 | 泰豪科技股份有限公司 | Power generation and distribution intelligent monitoring system |
| CN104238467A (en) * | 2013-06-07 | 2014-12-24 | 高邮市科特电机制造有限公司 | Remote centralized control system for distributed power generator sets |
| CN206517077U (en) * | 2017-01-26 | 2017-09-22 | 营口福泰科技有限责任公司 | CNG generating set parallel control systems |
| CN207406418U (en) * | 2017-10-27 | 2018-05-25 | 深圳海汇科技有限公司 | A kind of generator set controller for possessing redundancy control capability |
| CN208384368U (en) * | 2018-06-07 | 2019-01-15 | 江苏道康发电机组有限公司 | Large-scale data center generating set dynamic redundancy control system |
-
2018
- 2018-06-07 CN CN201810581943.6A patent/CN108614414A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188234Y (en) * | 1994-04-05 | 1995-01-25 | 吉林电力职工大学 | Infrared intelligence voice alarm |
| JP2007060863A (en) * | 2005-08-26 | 2007-03-08 | Toa Harbor Works Co Ltd | Monitoring method for parallel operation of generator, and device thereof |
| CN2891025Y (en) * | 2005-11-29 | 2007-04-18 | 李锋祖 | Intelligent control system for home security |
| CN102185334A (en) * | 2011-04-26 | 2011-09-14 | 广东康菱动力科技有限公司 | Multiple fully-automatic large-horsepower high-speed integrated parallel and commercial power interconnection system and power supply method thereof |
| CN202050253U (en) * | 2011-04-26 | 2011-11-23 | 广东康菱动力科技有限公司 | Multiple large power high speed full-automatic integrated parallel connection and commercial power grid connection system |
| CN202995303U (en) * | 2012-09-17 | 2013-06-12 | 深圳市宏银拾科技有限公司 | Generator set parallel connection controller |
| CN203267898U (en) * | 2013-05-29 | 2013-11-06 | 上海电机学院 | Voice prompter |
| CN104238467A (en) * | 2013-06-07 | 2014-12-24 | 高邮市科特电机制造有限公司 | Remote centralized control system for distributed power generator sets |
| CN203352196U (en) * | 2013-08-05 | 2013-12-18 | 广东西电动力科技股份有限公司 | Power supply system for parallel operation of multiple large-power high-voltage diesel generator sets |
| CN103944181A (en) * | 2013-12-18 | 2014-07-23 | 泰豪科技股份有限公司 | Power generation and distribution intelligent monitoring system |
| CN206517077U (en) * | 2017-01-26 | 2017-09-22 | 营口福泰科技有限责任公司 | CNG generating set parallel control systems |
| CN207406418U (en) * | 2017-10-27 | 2018-05-25 | 深圳海汇科技有限公司 | A kind of generator set controller for possessing redundancy control capability |
| CN208384368U (en) * | 2018-06-07 | 2019-01-15 | 江苏道康发电机组有限公司 | Large-scale data center generating set dynamic redundancy control system |
Non-Patent Citations (1)
| Title |
|---|
| 林正山: "无线电爱好者设计·制作·检修指南", 福建科学技术出版社, pages: 280 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370472A (en) * | 2022-07-25 | 2022-11-22 | 福建永强力加动力设备有限公司 | Full-load peak regulation and dynamic redundancy control system of generator set for large-scale data center |
| CN115370472B (en) * | 2022-07-25 | 2023-10-27 | 福建永强力加动力设备有限公司 | Full-load peak regulation and dynamic redundancy control system of generator set for large data center |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102608456B (en) | Parallel operation line failure detection device and system | |
| EP3264550A1 (en) | Access control method for parallel direct current power supplies and device thereof | |
| CN207853453U (en) | Backup battery circuit, motor driver and electric vehicle | |
| CN204948018U (en) | A kind of circuit of multi-machine parallel connection system prevention cell panel PID effect | |
| WO2020191618A1 (en) | Anti-backflow circuit, power supply and anti-backflow method | |
| CN102904217B (en) | Diode-clamped three-level insulated gate bipolar translator (IGBT) drive protection circuit, diode-clamped three-level (IGBT) drive module, and diode-clamped three-level topology device | |
| CN208384368U (en) | Large-scale data center generating set dynamic redundancy control system | |
| CN108614414A (en) | Large-scale data center generating set dynamic redundancy control system | |
| CN110943640A (en) | Topological structure of power converter with FC bridge arm redundancy structure of T-type inverter | |
| CN104104115A (en) | Multichannel high-accuracy reverse power control system and reverse power protection control method | |
| CN205992784U (en) | A kind of DC uninterrupted electric power system for DC load | |
| CN209516618U (en) | A kind of permanent magnet synchronous motor counter electromotive force protective device | |
| CN207765958U (en) | A kind of low pressure controller High-reliability power source circuit | |
| CN109639120A (en) | The driving interlock circuit and intelligent power module of intelligent power module | |
| CN107070187A (en) | A kind of H bridges change of current module drive circuit and modularization multi-level converter | |
| CN204595520U (en) | A kind of signal deteching circuit | |
| CN107733072A (en) | Intelligent vehicle-carried distribution system | |
| CN203553879U (en) | Three-phase voltage monitoring relay | |
| CN205960776U (en) | Auxiliary power supply system and power generation system | |
| CN206148808U (en) | Power electronic transformer's high -pressure rectifier module | |
| CN210245418U (en) | Industrial relay with voltage monitoring function | |
| CN220527719U (en) | Optimization circuit of domain control power supply inlet protection device and domain controller | |
| CN109995018A (en) | A kind of low pressure controller High-reliability power source circuit | |
| CN203574359U (en) | Wide-voltage two-way indication bus isolator | |
| CN211209285U (en) | Protection circuit and power supply circuit |
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 |