CN103941076A - Middle direct voltage intelligent collection device for rail transit alternating-current driving system - Google Patents
Middle direct voltage intelligent collection device for rail transit alternating-current driving system Download PDFInfo
- Publication number
- CN103941076A CN103941076A CN201410107107.6A CN201410107107A CN103941076A CN 103941076 A CN103941076 A CN 103941076A CN 201410107107 A CN201410107107 A CN 201410107107A CN 103941076 A CN103941076 A CN 103941076A
- Authority
- CN
- China
- Prior art keywords
- voltage
- acquisition device
- energy
- signal
- power supply
- 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
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a middle direct voltage intelligent collection device for a rail transit alternating-current driving system. The middle direct voltage intelligent collection device comprises an energy obtaining and storing unit, a difference sampling unit, an A/D converter, an intelligent operation processing unit and an optical fiber transmitter. The energy obtaining and storing unit obtains electric energy from a tested middle direct-current loop and provides a working power source for the intelligent collection device. The difference sampling unit detects a middle direct voltage and outputs an analog signal. The A/D converter converts the analog signal output by the difference sampling unit into a digital signal, and outputs the digital signal to the intelligent operation processing unit. The intelligent operation processing unit receives the digital signal output by the A/D converter, processes the digital signal and externally outputs an electric signal. The optical fiber transmitter converts the electric signal output by the intelligent operation processing unit into an optical signal and outputs the optical signal through optical fibers. The middle direct voltage intelligent collection device does not need to be powered externally, and has the fault diagnostic capability, the digital signal is transmitted through the optical fibers, and the voltage endurance capability and the anti-jamming capability are high.
Description
Technical field
The present invention relates to the intelligent apparatus of acquisition trajectory traffic alternating-current actuating system middle dc voltage.
Background technology
China newly makes rail transit locomotive, the most alternating-current actuating systems that adopt AC-DC-AC or straight-friendship mode of trailer system of vehicle, in this system, the voltage of intermediate dc link is a key parameter of locomotive AC kinematic train, it is the key factor in conversion process of energy, it determines main generator, main rectifier cabinet, main inverter, the power grade of the major equipment such as braking resistor and asynchronous traction motor, the numerical value of middle dc voltage is the common-denominator target of rectification control, also be the key input amount of rear end inversion control simultaneously, therefore the collection of middle dc voltage is most important, its accuracy and reliability concern performance and the safety of whole trailer system.
At present, the main middle dc voltage that adopts sensor acquisition trajectory traffic alternating-current actuating system, current source or voltage source signal are flowed to rear end A/C transmission control system by sensor, as shown in Figure 1, due to the restriction of technology and processing power, the acquisition mode extensively adopting is to realize by multiple (general more than three) voltage sensor is installed in intermediate dc loop, Fig. 2 is the connection layout of one of them voltage sensor and control system, the power supply that each voltage sensor needs rear end control system not wait for arrive ± 24V of its provide ± 15V, for sensor internal circuit provides excitation, sensor sensing produces in proportion electric signal by the mode of electricity-magnetic-electric twice conversion after tested voltage, passing ratio amplification is converted to current source or voltage source, output to rear end control system.Each like this voltage sensor at least needs 5 external connecting lines, be connected with (+) end, middle dc voltage (-) negative terminal or the middle DC voltage of middle dc voltage respectively, obtain power supply by power supply (+), power supply (-) from rear end control system, by " signal " alignment control system output current (voltage) source.
The weak point of this acquisition mode has: 1, the very easily coupled room undesired signal of simulating signal of sensor output, cause the computing deviation of rear end control system, and system is produced to harmful effect.2, sensor acquisition mode is owing to being analog signal transmission pattern, in long Distance Transmission process, analog signal accuracy can decay, and the voltage sensor fault that cannot occur extremely to cause to middle DC loop is made diagnosis, conventionally the more emat sensor that can only break down on the spot, has reduced availability and the stability of whole system.3, sensor needs back-end system power supply, the power supply power consumption of common each voltage sensor mean consumption 5W left and right, after needing, end control system provides the 15W power consumption of left and right, has increased power supply burden and the heat radiation burden of rear end control system, has increased the volume of control system.4, in sensor acquisition mode, each sensor amounts to 5 of outlets, has increased the wiring burden of system, has also increased the probability of the system failure, reduces system reliability.
Summary of the invention
Technical matters to be solved by this invention is overcome the above-mentioned deficiency of prior art and a kind of alternating-current actuating system middle dc voltage intelligent acquisition device is provided, it is without externally fed, itself possesses trouble diagnosibility device, and adopts Optical Fiber Transmission digital signal.
The present invention addresses the above problem adopted technical scheme: track traffic alternating-current actuating system middle dc voltage intelligent acquisition device, comprises and get energy energy-storage units, difference sampling unit, A/D converter, intelligent operation processing unit, fiber optic transmitter; Get and can from tested intermediate dc loop, obtain power supply by energy-storage units, for described intelligent acquisition device provides working power; Difference sampling unit detects middle dc voltage outputting analog signal; The simulating signal of difference sampling unit output is converted to digital signal by A/D converter, and export to intelligent operation processing unit; Intelligence operation processing unit receives the digital signal of A/D converter output, processes backward outside output digit signals, and fiber optic transmitter is converted to the electric signal of intelligent operation processing unit output light signal and exports by optical fiber.
Described intelligent acquisition device also comprises fiber optic receiver, and fiber optic receiver receives external fiber signal, and light signal is converted to electric signal exports to intelligent operation processing unit, and intelligent operation processing unit, according to the Electric signal processing signal receiving, completes instruction.
Described intelligent acquisition device also comprises terminal redundancy and dispensing unit, and terminal redundancy is connected the tested end in intermediate dc loop with the input end of dispensing unit, and output terminal connects gets the input end of energy energy-storage units, the input end of difference sampling unit.
Described intelligent acquisition device also comprises storage unit, the data of cell stores intelligence operation processing unit.
Described intelligent acquisition device also comprises man-machine interface, and man-machine interface is connected with intelligent operation processing unit.
Preferably get can energy-storage units comprise get can circuit, accumulation power supply, forward are got can circuit, mu balanced circuit, get and can from tested intermediate dc loop, obtain power supply by circuit, and be accumulation power supply charging, accumulation power supply provides working power without electric in the situation that in intermediate dc loop, forward get can circuit guarantee to get can circuit output electric energy one-way flow, mu balanced circuit by get can circuit or the electric energy voltage stabilizing that provides of accumulation power supply provide power supply into described intelligent acquisition device after changing.
Getting of further optimizing can comprise Switching Power Supply, diode, the first electric capacity, voltage stabilizer and the second electric capacity by energy-storage units; Two input ends of Switching Power Supply connect respectively negative terminal and the anode of middle dc voltage, output low-tension supply; Low-tension supply is rear by voltage stabilizer voltage stabilizing conversion is this intelligent acquisition device power supply; The first electric capacity is connected in the loop after Switching Power Supply, intermediate dc loop without electric in the situation that for this device provides required electric energy; Diode is connected in the loop between power switch and the first electric capacity, between the supply line of voltage stabilizer output, connects the second electric capacity.
In preferred difference sampling unit, adopt three or more resistance series connection dividing potential drop, by the middle dc voltage difference input difference amplifier of dividing potential drop, differential amplifier is exported tested middle dc voltage signal in proportion.
Compared with prior art, the invention has the advantages that: 1, in this intelligent acquisition device, comprise and get energy energy-storage units, can directly from tested intermediate dc loop, obtain the required electric energy of this device, be its power supply without external system, alleviate the power supply burden of external system, reduce outside wiring, improved system stability reliability.What 2, this intelligent acquisition device was exported to outside is digital signal, has avoided A/C transmission control system to carry out analog to digital conversion, in addition again, adopt Optical Fiber Transmission digital signal by fiber optic transmitter, data throughout is large, and voltage endurance capability, antijamming capability are strong, can realize harmless transmission.3, this intelligent acquisition device adopts intelligent operation processing unit, storage unit, can carry out the comprehensive record under failure condition to measured data, and provide diagnostic message according to record data according to default diagnostic logic, can effectively improve the maintainability of device.4, this intelligent acquisition device adopts fiber optic receiver can receive external command, can also connect external unit by man-machine interface, to safeguard intelligent arithmetic element or process image data.
Brief description of the drawings
Fig. 1 is alternating-current actuating system intermediate dc loop and existing acquisition mode schematic diagram.
Fig. 2 is one of them voltage sensor in existing acquisition mode and the connection layout of control system.
Fig. 3 is the theory diagram of intelligent acquisition device in the embodiment of the present invention one.
Fig. 4 is the theory diagram of intelligent acquisition device in the embodiment of the present invention two.
Fig. 5 is the connection layout of intelligent acquisition device and control system in the embodiment of the present invention two.
Fig. 6 is the circuit diagram of getting energy energy-storage units in the embodiment of the present invention.
Fig. 7 is the circuit diagram of differential sample unit and A/D converter in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment, the present invention is further described.
Embodiment mono-:
The theory diagram of track traffic alternating-current actuating system middle dc voltage intelligent acquisition device as shown in Figure 3, the terminals of this device comprise Ud-, Ud1+, Ud2+, Ud3+ and OUT terminals, wherein terminals Ud-connects the negative terminal of the middle dc voltage in alternating-current actuating system intermediate dc loop, terminals Ud1+, Ud2+, Ud3+ connect respectively the anode of middle dc voltage, and terminals OUT exports the fiber-optic signal of the middle dc voltage collecting.
Certainly, can increase as required the terminals of multiple connection middle dc voltage anodes, to gather the voltage of multiple nodes in intermediate dc loop.
This intelligent acquisition device comprises gets energy energy-storage units, difference sampling unit, A/D converter, intelligent operation processing unit, fiber optic transmitter.
Get and can energy-storage units comprise that get can circuit, get and can from tested intermediate dc loop, obtain the required power supply of this device by circuit, and be that accumulation power supply wherein charges.Accumulation power supply can intermediate dc loop without electric in the situation that for this intelligent acquisition device provides required electric energy, guarantee that the non-blind area of this intelligent acquisition device is measured.Get also comprise that forward is got in can energy-storage units can circuit, preventing under the too low or electroless state of intermediate dc loop voltage that the electric energy in accumulation power supply flows backwards can circuit to getting.Get and can in energy-storage units, mu balanced circuit be also set, filtering circuit.
In this intelligent acquisition device get can energy-storage units preferred circuit as shown in Figure 6, get and can comprise Switching Power Supply P1, diode V1, capacitor C 1, voltage stabilizer P2 and capacitor C 2 by energy-storage units.Two input ends of Switching Power Supply P1 connect respectively negative terminal and the anode of middle dc voltage, wherein anode can connect Ud1+ or Ud2+ etc., middle dc voltage is converted by DC/DC high frequency switch power, form low-tension supply, low-tension supply is rear by voltage stabilizer P2 voltage stabilizing conversion is this intelligent acquisition device power supply.Capacitor C 1 is connected in the loop after Switching Power Supply P1, C1 can adopt super capacitor or tantalum electrochemical capacitor, and in intermediate dc loop, without electric in the situation that, capacitor C 1 provides required electric energy by the energy storage of self for this device, once it is electric that intermediate dc loop obtains, can be accumulation power supply charging again.Diode V1 is connected in the loop between power switch P1 and capacitor C 1, and diode V1 prevents that electric energy flows backwards to Switching Power Supply P1 in the time that capacitor C 1 is powered.Between the supply line of output, connect capacitor C 2, capacitor C 2 is power filter, possesses voltage stabilizing function simultaneously.
Difference sampling unit detects middle dc voltage, and outputting analog signal.
The preferred circuit of difference sampling unit, A/D converter in this intelligent acquisition device as shown in Figure 7, in tested intermediate dc loop, adopt resistance R a, Rb, Rc dividing potential drop, the wherein voltage difference input difference amplifier at resistance R b two ends, differential amplifier is exported tested middle dc voltage signal in proportion, and the mode of difference sampling has been avoided common mode interference.The voltage signal of differential amplifier output is realized from the conversion of analog to digital signal by A/D converter, and formation is the digital signal of long-distance nondestructive transmission externally.This employing contact difference sampling pattern, converts the middle dc voltage collecting to digital quantity on the spot, and lossless transmission, is particularly useful for high performance control occasion.
Difference sampling unit can be arranged to multichannel, the anode of the corresponding middle dc voltage of every circuit, and in this enforcements, the anode of three middle dc voltages of correspondence, arranges the difference sampling unit of three tunnel parallel connections.
Intelligence operation processing unit comprises processor etc., can process the digital signal that A/D converter is carried, and signal after treatment is sent to fiber optic transmitter.The required power supply of intelligence operation processing unit can provide by energy-storage units by getting.
The digital electric signal that fiber optic transmitter sends intelligent operation processing unit is converted into light signal, and light signal is sent to A/C transmission control system by terminals OUT, optical fiber.
Embodiment bis-:
Track traffic alternating-current actuating system middle dc voltage intelligent acquisition principle of device block diagram as shown in Figure 4, on the basis of embodiment mono-, has increased terminal redundancy and dispensing unit.Terminal redundancy is connected with input end and terminals Ud-, Ud1+, Ud2+, the Ud3+ of dispensing unit, output terminal with get input end that can energy-storage units, the input end of difference sampling unit is connected.Terminal redundancy and dispensing unit are offered tested voltage to get energy energy-storage units, difference sampling unit by modes such as wire jumper, redundancy wirings, guarantee that this device is with high reliability work, for example, by terminal redundancy and dispensing unit, can select Ud-, the input of Ud1+ terminals to get energy energy-storage units, or select Ud-, the input of Ud2+ terminals to get energy energy-storage units.
The data that arrive for storage of collected, this intelligent acquisition device also comprises storage unit, storage unit connects intelligent operation processing unit, intelligence operation processing unit can be by signal data buffer memory after treatment to storage unit, like this, intelligence operation processing unit can provide diagnostic message according to record and according to the diagnostic logic pre-setting according to the instruction of rear end control system or according to the state triggered of the middle dc voltage collecting by storage unit, for example, Intelligent treatment software in storage unit combined with intelligent operation processing unit, can be in fault generation prerequisite for early warning, while breaking down, make and judge timely and start redundancy scheme, fault provides clear and definite diagnostic data in order to safeguarding needs after occurring.
For realizing the interaction between operating personnel and this intelligent acquisition device, man-machine interface is also set, man-machine interface is connected with intelligent operation processing unit, connect external unit by man-machine interface, can safeguard the software in intelligent operation processing unit, can also monitor image data, the data in also can downloaded stored unit.
In order to receive the control signal of A/C transmission control system, this intelligent acquisition device is also provided with optical fiber input interface IN, fiber optic receiver, fiber optic receiver receives by interface IN the instruction that A/C transmission control system is sent, and light signal is converted to electric signal inputs to intelligent operation processing unit, intelligence operation processing unit is responded instruction, according to the command signal receiving, processing signals, completes instruction.
The annexation of intelligent acquisition device and control system as shown in Figure 5, tested middle dc voltage is inputted this intelligent acquisition device, after this device is processed, adopt optical fiber to transmit signal to A/C transmission control system, or accept the fiber-optic signal of A/C transmission control system.
In this embodiment, get energy energy-storage units, difference sampling unit, A/D converter, intelligent operation processing unit, fiber optic transmitter etc. and can adopt the circuit in embodiment mono-, also can adopt equivalent electrical circuit of the prior art or device.
Because intelligent operation processing unit, terminal redundancy and dispensing unit, fiber optic transmitter etc. belong to prior art, repeat no more.
Claims (8)
1. track traffic alternating-current actuating system middle dc voltage intelligent acquisition device, is characterized in that: described intelligent acquisition device comprises gets energy energy-storage units, difference sampling unit, A/D converter, intelligent operation processing unit, fiber optic transmitter; Get and can from tested intermediate dc loop, obtain power supply by energy-storage units, for described intelligent acquisition device provides working power; Difference sampling unit detects middle dc voltage outputting analog signal; The simulating signal of difference sampling unit output is converted to digital signal by A/D converter, and export to intelligent operation processing unit; Intelligence operation processing unit receives the digital signal of A/D converter output, processes backward outside output digit signals, and fiber optic transmitter is converted to the electric signal of intelligent operation processing unit output light signal and exports by optical fiber.
2. track traffic alternating-current actuating system middle dc voltage intelligent acquisition device according to claim 1, it is characterized in that: described intelligent acquisition device also comprises fiber optic receiver, fiber optic receiver receives external fiber signal, and light signal is converted to electric signal exports to intelligent operation processing unit, intelligence operation processing unit, according to the Electric signal processing signal receiving, completes instruction.
3. track traffic alternating-current actuating system middle dc voltage intelligent acquisition device according to claim 1, it is characterized in that: described intelligent acquisition device also comprises terminal redundancy and dispensing unit, terminal redundancy is connected the tested end in intermediate dc loop with the input end of dispensing unit, output terminal connects gets the input end of energy energy-storage units, the input end of difference sampling unit.
4. track traffic alternating-current actuating system middle dc voltage intelligent acquisition device according to claim 1, is characterized in that: described intelligent acquisition device also comprises storage unit, the data of cell stores intelligence operation processing unit.
5. track traffic alternating-current actuating system middle dc voltage intelligent acquisition device according to claim 1, is characterized in that: described intelligent acquisition device also comprises man-machine interface, and man-machine interface is connected with intelligent operation processing unit.
6. according to the track traffic alternating-current actuating system middle dc voltage intelligent acquisition device described in claim 1 to 5 any one, it is characterized in that: described in get and can energy-storage units comprise that get can circuit, accumulation power supply, forward is got energy circuit, mu balanced circuit, get and can from tested intermediate dc loop, obtain power supply by circuit, and be accumulation power supply charging, accumulation power supply provides working power without electric in the situation that in intermediate dc loop, forward is got and can be guaranteed to get the electric energy one-way flow that energy circuit is exported by circuit, mu balanced circuit by get can circuit or the electric energy voltage stabilizing that provides of accumulation power supply provide power supply into described intelligent acquisition device after changing.
7. track traffic alternating-current actuating system middle dc voltage intelligent acquisition device according to claim 6, is characterized in that: described in get and can energy-storage units comprise Switching Power Supply, diode, the first electric capacity, voltage stabilizer and the second electric capacity; Two input ends of Switching Power Supply connect respectively negative terminal and the anode of middle dc voltage, output low-tension supply; Low-tension supply is rear by voltage stabilizer voltage stabilizing conversion is this intelligent acquisition device power supply; The first electric capacity is connected in the loop after Switching Power Supply, intermediate dc loop without electric in the situation that for this device provides required electric energy; Diode is connected in the loop between power switch and the first electric capacity, between the supply line of voltage stabilizer output, connects the second electric capacity.
8. according to the track traffic alternating-current actuating system middle dc voltage intelligent acquisition device described in claim 1 to 5 any one, it is characterized in that: in described difference sampling unit, adopt three or more resistance series connection dividing potential drop, by the middle dc voltage difference input difference amplifier of dividing potential drop, differential amplifier is exported tested middle dc voltage signal in proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107107.6A CN103941076A (en) | 2014-03-21 | 2014-03-21 | Middle direct voltage intelligent collection device for rail transit alternating-current driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107107.6A CN103941076A (en) | 2014-03-21 | 2014-03-21 | Middle direct voltage intelligent collection device for rail transit alternating-current driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103941076A true CN103941076A (en) | 2014-07-23 |
Family
ID=51188825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410107107.6A Pending CN103941076A (en) | 2014-03-21 | 2014-03-21 | Middle direct voltage intelligent collection device for rail transit alternating-current driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103941076A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016086459A1 (en) * | 2014-12-02 | 2016-06-09 | 永济新时速电机电器有限责任公司 | Traction converter of bus voltage detection circuit having double voltage sensor |
| CN105720830A (en) * | 2014-12-02 | 2016-06-29 | 永济新时速电机电器有限责任公司 | Traction converter with bus voltage grounding protection voltage-division sampling circuit |
| CN105711431A (en) * | 2014-12-02 | 2016-06-29 | 永济新时速电机电器有限责任公司 | High speed train bogie power supply mode traction converter main circuit |
| CN110275082A (en) * | 2018-03-16 | 2019-09-24 | 中车株洲电力机车研究所有限公司 | A kind of ground connection diagnostic method, system and the device of main circuit of converter |
| CN110389304A (en) * | 2018-04-13 | 2019-10-29 | 中车株洲电力机车研究所有限公司 | A kind of power supply power consumption detection device of rail traffic control unit |
| CN110501560A (en) * | 2019-08-30 | 2019-11-26 | 广州市扬新技术研究有限责任公司 | Orbit traffic direct current transmitter digitalizer based on fiber optic communication |
| CN112816753A (en) * | 2020-08-07 | 2021-05-18 | 苏州市清易传感电力电子有限公司 | Novel self-energy-taking voltage sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449414U (en) * | 2009-06-30 | 2010-05-05 | 中国西电电气股份有限公司 | Suspended DC voltage measuring circuit for high-voltage rectifying circuit |
| CN201666911U (en) * | 2010-02-23 | 2010-12-08 | 深圳市英威腾电气股份有限公司 | Voltage detecting device of medium- and high-voltage variable frequency speed governor |
| CN102355046A (en) * | 2011-09-09 | 2012-02-15 | Tcl新技术（惠州）有限公司 | Voltage detection and power failure protection device and implementation method |
| CN202651822U (en) * | 2012-05-11 | 2013-01-02 | 南京恒星自动化设备有限公司 | Power source apparatus capable of prolonging work time of reserve battery |
| WO2013024244A1 (en) * | 2011-08-18 | 2013-02-21 | Ultra Electronics Limited | Method and apparatus for measurement of a dc voltage |
| CN103134979A (en) * | 2011-11-28 | 2013-06-05 | 同济大学 | Checking circuit for energy storage device terminal voltage |
-
2014
- 2014-03-21 CN CN201410107107.6A patent/CN103941076A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449414U (en) * | 2009-06-30 | 2010-05-05 | 中国西电电气股份有限公司 | Suspended DC voltage measuring circuit for high-voltage rectifying circuit |
| CN201666911U (en) * | 2010-02-23 | 2010-12-08 | 深圳市英威腾电气股份有限公司 | Voltage detecting device of medium- and high-voltage variable frequency speed governor |
| WO2013024244A1 (en) * | 2011-08-18 | 2013-02-21 | Ultra Electronics Limited | Method and apparatus for measurement of a dc voltage |
| CN102355046A (en) * | 2011-09-09 | 2012-02-15 | Tcl新技术（惠州）有限公司 | Voltage detection and power failure protection device and implementation method |
| CN103134979A (en) * | 2011-11-28 | 2013-06-05 | 同济大学 | Checking circuit for energy storage device terminal voltage |
| CN202651822U (en) * | 2012-05-11 | 2013-01-02 | 南京恒星自动化设备有限公司 | Power source apparatus capable of prolonging work time of reserve battery |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016086459A1 (en) * | 2014-12-02 | 2016-06-09 | 永济新时速电机电器有限责任公司 | Traction converter of bus voltage detection circuit having double voltage sensor |
| CN105720830A (en) * | 2014-12-02 | 2016-06-29 | 永济新时速电机电器有限责任公司 | Traction converter with bus voltage grounding protection voltage-division sampling circuit |
| CN105720831A (en) * | 2014-12-02 | 2016-06-29 | 永济新时速电机电器有限责任公司 | Traction converter with double-voltage-sensor bus voltage detection circuit |
| CN105711431A (en) * | 2014-12-02 | 2016-06-29 | 永济新时速电机电器有限责任公司 | High speed train bogie power supply mode traction converter main circuit |
| CN110275082A (en) * | 2018-03-16 | 2019-09-24 | 中车株洲电力机车研究所有限公司 | A kind of ground connection diagnostic method, system and the device of main circuit of converter |
| CN110275082B (en) * | 2018-03-16 | 2021-08-17 | 中车株洲电力机车研究所有限公司 | Grounding diagnosis method, system and device for main circuit of converter |
| CN110389304A (en) * | 2018-04-13 | 2019-10-29 | 中车株洲电力机车研究所有限公司 | A kind of power supply power consumption detection device of rail traffic control unit |
| CN110501560A (en) * | 2019-08-30 | 2019-11-26 | 广州市扬新技术研究有限责任公司 | Orbit traffic direct current transmitter digitalizer based on fiber optic communication |
| CN112816753A (en) * | 2020-08-07 | 2021-05-18 | 苏州市清易传感电力电子有限公司 | Novel self-energy-taking voltage sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103941076A (en) | Middle direct voltage intelligent collection device for rail transit alternating-current driving system | |
| CN102749890B (en) | Redundancy method for DCS (distributed control system) control module | |
| CN211416974U (en) | Integrated system for managing whole vehicle and battery | |
| CN110048513B (en) | Power battery energy storage system for gradient utilization vehicle | |
| CN208834293U (en) | One kind is mostly from control module automatic addressing device | |
| CN109720204A (en) | A kind of fault detection system and method for DC/DC converter | |
| CN104267296A (en) | STATCOM fault diagnosis method based on MMC | |
| CN103015831B (en) | Integrated rail transit screen door machine controller | |
| CN103260263A (en) | Metro stray current wireless monitoring system and method | |
| CN107492684A (en) | The battery management system and vehicle of electrokinetic cell | |
| CN205429889U (en) | Mining battery charging outfit running state monitoring devices of distributing type | |
| CN203435006U (en) | Bus isolator | |
| CN107666141A (en) | A kind of alternating current-direct current for direct-flow distribution system is being got lines crossed default detection and protection device | |
| CN202782741U (en) | Intelligent power box for supplying power to vehicle-mounted precision equipment | |
| CN205159455U (en) | Appearance is patrolled and examined to economical intelligent battery | |
| CN104237702A (en) | Automobile bonding point detecting device and automobile bonding point detecting method | |
| CN105966266A (en) | Main circuit of transmission system | |
| CN205622322U (en) | Distribution monitor information collection system | |
| CN105620515A (en) | Railway signal power source remote monitoring system | |
| CN211061633U (en) | Direct current insulation monitoring device based on alternating current and direct current leakage current sensor | |
| CN107678349A (en) | Rail transit signal acquisition system | |
| CN106787787A (en) | Electric power electric transformer and rail vehicle power system with control unit | |
| CN112526341A (en) | Equipment for detecting faults of traction motor system of diesel locomotive | |
| CN104215908A (en) | Method for monitoring storage battery pack of networked digital sensing modules | |
| CN206265071U (en) | Rail vehicle speed control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315021 Zhejiang Province, Ningbo Jiangbei District Yongjiang Industrial Park No. 138 vibration Yonglu Applicant after: NINGBO CRRC TIMES SENSING TECHNOLOGY CO., LTD. Address before: 315021 Zhejiang Province, Ningbo Jiangbei District Yongjiang Industrial Park No. 138 vibration Yonglu Applicant before: Ningbo CSR Times Transducer Technique Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140723 |