CN204993063U - On -vehicle auxiliary electrical power source high frequency isolating device - Google Patents
On -vehicle auxiliary electrical power source high frequency isolating device Download PDFInfo
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- CN204993063U CN204993063U CN201520293720.1U CN201520293720U CN204993063U CN 204993063 U CN204993063 U CN 204993063U CN 201520293720 U CN201520293720 U CN 201520293720U CN 204993063 U CN204993063 U CN 204993063U
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Abstract
The utility model provides an on -vehicle auxiliary electrical power source high frequency isolating device, includes copped wave unit, high frequency isolation unit, sensor detecting element, isolating driver unit and the control unit, the copped wave unit links to each other through the supplementary load of storage battery charging machine and direct current as preceding stage voltage regulator device is direct, the high frequency is kept apart the unit and as back level voltage regulator device, is connect to preceding stage voltage regulator device to behind invertion power supply with exchange supplementary load and link to each other. The utility model has the advantages of small, light in weight, with low costs, the electric isolation is effectual.
Description
Technical field
The utility model is mainly concerned with field of railway transportation equipment, refers in particular to a kind of high frequency electrical isolation device being applicable to vehicle-mounted accessory power supply in Transit Equipment.
Background technology
Vehicle-mounted auxiliary power unit comprises SIV and charger.SIV is vehicle-mounted subordinate inverter, is used to as car load air compressor machine, air-conditioning etc. provide the supply unit of AC380V power supply.In traditional vehicle-mounted auxiliary power unit, the electrical isolation mode that SIV generally adopts Industrial Frequency Transformer to isolate.Along with the development of train technical, passenger requires more and more higher to Comfortability of Train, and the change of assistant load on car, the capacity of auxiliary power unit also requires increasing, and the restriction in the space of train own and the strict demand to component weight, on train, assistant load is more and more higher to the volume of SIV, capacity requirement, and this is just more and more harsher to the weight demands of SIV.Therefore, adopt the SIV of Industrial Frequency Transformer isolation under these impacts required, its defect is got over utility model and is shown, and the design difficulty of SIV is also increasing.
Simultaneously, tradition vehicle-mounted SIV due to its input voltage range wide, as subway input voltage has 750V(scope 525V-900V) and 1500V(scope 1000V-1800V) two kinds, this just requires that SIV is when designing, need to take into full account the impact of the operating mode of various complexity on the various device of SIV, be unfavorable for so very much modularization and the seriation of SIV.
Adopt high-frequency isolation technology effectively can solve the requirement of SIV volume, weight and inversion convertor assembly standardized designs.But, because high-frequency isolation technology generally needs to adopt harmonic technology to realize, very large difficulty can be brought to resonant circuit design in the operating mode of wide input voltage range and wide loading range.
Utility model content
The technical problems to be solved in the utility model is just: the technical problem existed for prior art, the utility model provides the vehicle-mounted accessory power supply high-frequency isolating device that a kind of volume is little, lightweight, cost is low, electrical isolation is effective.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of vehicle-mounted accessory power supply high-frequency isolating device, comprise copped wave unit, high-frequency isolation unit, transducer detecting unit, isolation drive unit and control unit, described copped wave unit is directly connected with direct current assistant load through battery charger as prime stable-pressure device; Described high-frequency isolation unit, as rear class stable-pressure device, is connected to prime stable-pressure device, and after inverter with exchange assistant load be connected.
As further improvement of the utility model: described copped wave unit is used for converting the input voltage that scope is very wide to stable VD, or the VD of output area approximately constant.
As further improvement of the utility model: described high-frequency isolation unit is used for converting copped wave unit output voltage to high-frequency rectangular pulse ripple.
As further improvement of the utility model: described high-frequency isolation unit comprises high-frequency inversion unit, secondary rectification unit and output filtering unit, described high-frequency inversion unit comprises full bridge inverter and high frequency transformer, described full bridge inverter adopts IGBT as power conversion components and parts, and described high frequency transformer is used for realizing input and output electrical isolation.
As further improvement of the utility model: described full bridge inverter unit adopts the connected mode of composite bus bar.
As further improvement of the utility model: described isolation drive unit is used for the pulse drive signal from control unit to be converted to IGBT switching signal, the IGBT fault detected is fed back to control unit simultaneously.
As further improvement of the utility model: described control unit is used for completing various protection, logic control and self-diagnostic function according to various feedback quantity and state information, and produces IGBT trigger impulse.
Compared with prior art, the utility model has the advantage of:
1, vehicle-mounted accessory power supply high-frequency isolating device of the present utility model, not only enormously simplify the design difficulty of resonant circuit, adopt the voltage stabilizing of prime Buck circuit simultaneously, the voltage stress of device on resonant circuit can be made greatly to reduce, system takes the scheme of twin-stage voltage stabilizing, is conducive to the dynamic property of raising system and corresponding precision.
2, vehicle-mounted accessory power supply high-frequency isolating device of the present utility model, can facilitate inversion convertor assembly and the battery charger modularization of vehicle-mounted SIV, seriation; When inputting operating mode and output operating mode is all very complicated, reduce the design difficulty of high-frequency isolating device.
3, vehicle-mounted accessory power supply high-frequency isolating device of the present utility model, electricity isolation device adopts high-frequency isolation technology, meets the entrucking requirement of train accessory power supply, and embody the advance of vehicle power technology, its unfailing performance meets the utilization requirement of train.When high-frequency isolating device normally starts, output voltage is set by control software design and linearly rises, because two-stage can both soft, the impact to inversion convertor assembly and battery charger input circuit therefore can be effectively reduced.
4, vehicle-mounted accessory power supply high-frequency isolating device of the present utility model; control unit realizes the digital quantity of whole system, analog quantity and start and stop logic control; possesses the function such as fault self-diagnosis and protection, failure logging and fault download simultaneously; and by the exchanges data of Ethernet interface and host computer, realize the functions such as real time data supervision, waveform recording.High-frequency isolating device has perfect defencive function; these defencive functions can make high-frequency isolating device when not adding any peripheral protective device; orderly shutdown system; also there is self-diagnostic function simultaneously; can by the running status of control unit light-emitting diode display inquiry high-frequency isolating device; people and connection interface are very friendly, by network, the running status of high-frequency isolating device are sent to host computer simultaneously, self also will carry out record to fault simultaneously.
Accompanying drawing explanation
Fig. 1 is application principle schematic diagram of the present utility model.
Fig. 2 is the structural principle schematic diagram of the utility model in embody rule example.
Fig. 3 is the circuit theory schematic diagram of the utility model in embody rule example.
Fig. 4 is the topological structure schematic diagram of the utility model control unit in embody rule example.
Marginal data:
1, copped wave unit; 2, high-frequency isolation unit; 201, high-frequency inversion unit; 202, secondary rectification unit; 203, output filtering unit; 3, transducer detecting unit; 4, isolation drive unit; 5, control unit.
Embodiment
Below with reference to Figure of description and specific embodiment, the utility model is described in further details.
Vehicle-mounted accessory power supply high-frequency isolating device of the present utility model, adopts high-frequency isolation technology, and to meet the entrucking requirement of train accessory power supply, embody the advance of vehicle power technology, its unfailing performance meets the utilization requirement of train; It is for the defect of resonant circuit difficult design, proposes a kind of high-frequency isolating device adopting Buck circuit voltage stabilizing+Sofe Switch resonant circuit high-frequency isolation.As shown in Figure 1, the input of vehicle-mounted accessory power supply high-frequency isolating device of the present utility model and precharge and filter, input power are connected, output through inverter with exchange assistant load and be connected, be connected with direct current assistant load through battery charger.As shown in Figures 2 and 3, vehicle-mounted accessory power supply high-frequency isolating device of the present utility model, comprise copped wave unit 1, high-frequency isolation unit 2, transducer detecting unit 3, isolation drive unit 4 and control unit 5, that is: high-frequency isolating device of the present utility model is the scheme adopting two-stage circuit, prime stable-pressure device adopts copped wave unit 1 to carry out voltage stabilizing, simplify the operating mode of late-class circuit, after buck chopper voltage stabilizing, effectively can reduce rear class power tube stress, and directly be connected with direct current assistant load through battery charger; Rear class then adopts the high-frequency isolation unit 2 being connected to prime stable-pressure device to realize the electrical isolation of accessory power supply, and after inverter with exchange assistant load be connected; Like this, two-stage stable-pressure device, by regulating the voltage of two-stage stable-pressure device, can adapt to the power model of late-class circuit various criterion.Wherein:
Copped wave unit 1, is used for converting the input voltage that scope is very wide to stable VD, or the VD of output area approximately constant.This example comprises Q5, Db, Lb and Cin.
High-frequency isolation unit 2, is used for converting copped wave unit 1 output voltage to high-frequency rectangular pulse ripple.By adopting soft switch technique in this example, improve switching tube frequency, to reduce the volume and weight of isolating transformer, realizing the electrical isolation of constrained input.It comprises high-frequency inversion unit 201, secondary rectification unit 202 and output filtering unit 203, and high-frequency inversion unit 201 comprises full bridge inverter and high frequency transformer; In this example, full bridge inverter adopts IGBT as power conversion components and parts, Q1 and Q2 adopts Zero-voltage soft switch mode to realize improving the object of switching tube switching frequency, Q3 and Q4 adopts the mode of zero-current soft switch to reach the object improving switching tube switching frequency.High frequency transformer is used for realizing input and output electrical isolation, secondly interchange rectangular pulse is rectified into direct current rectangular pulse by limit D5-D12, Cc, Dc, Dd and Cc1, Dc1, Dd1 then mainly participate in former limit circuit resonance, can realize former limit Q3 and Q4 zero-current soft switch.As can be seen here, the secondary of whole full-bridge high-frequency buffer circuit adopts the mode of series connection, conveniently can export high pressure on the one hand, improve system effectiveness, can reduce the auxiliary electric stress becoming road again on the other hand.Output filtering unit 203 adopts and exports LC filter circuit, the pulsating direct current of secondary limit is used for be filtered into more level and smooth output dc voltage, participate in circuit resonance simultaneously, power device Q1 and Q2 on the former limit of high frequency transformer is made conveniently to realize Sofe Switch, reach raising switching frequency, reduce the object of system bulk.The soft switch technique of above-mentioned employing transformer secondary clamper, secondary adopts the mode of series connection, when can ensure that system is run under high-power high-voltage operating mode, effectively can reduce the voltage stress in secondary auxiliary resonance loop, improve system reliability.
In the present embodiment, full bridge inverter unit adopts the connected mode of composite bus bar, and to facilitate modularized design, each function blockization design, is convenient to product seriation.
Isolation drive unit 4, is used for the pulse drive signal from control unit 5 to be converted to IGBT switching signal, the IGBT fault detected is fed back to control unit 5 simultaneously.
Control unit 5, is used for completing various protection, logic control and self-diagnostic function according to various feedback quantity and state information, and produces IGBT trigger impulse.Microcomputer control unit is adopted according to actual needs in this example.In addition, the start and stop of the utility model high-frequency isolating device, the action etc. of contactor are all controlled by microcomputer control unit, and such high-frequency isolating device can realize soft start function.Simultaneously; also can realize the defencive functions such as input and output overvoltage/undervoltage, output overcurrent, short circuit, radiator be overheated; high-frequency isolating device of the present utility model by Ethernet and host computer transmission of information, can detect high-frequency isolating device data by man-machine interface easily.As shown in Figure 4, be the hardware topology schematic diagram of the utility model microcomputer control unit in embody rule example.
As from the foregoing, vehicle-mounted accessory power supply high-frequency isolating device of the present utility model, for adapting to wide range input, and is input as the high power D C/DC high frequency isolation type device of high pressure.Wherein, high frequency transformer time limit series system, effectively reduces the stress of system device, realizes the object of the convenient design of resonator system parameter.High-frequency inversion device adopts high-frequency soft switch implementation, and switching frequency is at least greater than 10k.Output voltage is high pressure constant voltage or is output voltage approximate constant voltage (fluctuation range is far smaller than input power fluctuation range), to facilitate late-class circuit modularization, and seriation.Whole system adopts digital Control Technology, and can facilitate the output voltage of amendment system, directly can be connected from the inverter/converter of different electric pressure, system suitability is wide.Microcomputer control unit has very perfect on-line monitoring and fault logging function, can know the running status of spacer assembly all parts easily.The voltage stabilizing of full-bridge circuit prime, effectively can simplify the resonant parameter design on the road of full-bridge, and the components selection of full-bridge circuit.
Below be only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, not departing from the some improvements and modifications under the utility model principle prerequisite, protection range of the present utility model should be considered as.
Claims (7)
1. a vehicle-mounted accessory power supply high-frequency isolating device, it is characterized in that, comprise copped wave unit (1), high-frequency isolation unit (2), transducer detecting unit (3), isolation drive unit (4) and control unit (5), described copped wave unit (1) is directly connected with direct current assistant load through battery charger as prime stable-pressure device; Described high-frequency isolation unit (2), as rear class stable-pressure device, is connected to prime stable-pressure device, and after inverter with exchange assistant load be connected.
2. vehicle-mounted accessory power supply high-frequency isolating device according to claim 1, is characterized in that, described copped wave unit (1) is used for converting the input voltage that scope is very wide to stable VD, or the VD of output area approximately constant.
3. vehicle-mounted accessory power supply high-frequency isolating device according to claim 1 and 2, is characterized in that, described high-frequency isolation unit (2) is used for converting copped wave unit (1) output voltage to high-frequency rectangular pulse ripple.
4. vehicle-mounted accessory power supply high-frequency isolating device according to claim 3, it is characterized in that, described high-frequency isolation unit (2) comprises high-frequency inversion unit (201), secondary rectification unit (202) and output filtering unit (203), described high-frequency inversion unit (201) comprises full bridge inverter and high frequency transformer, described full bridge inverter adopts IGBT as power conversion components and parts, and described high frequency transformer is used for realizing input and output electrical isolation.
5. vehicle-mounted accessory power supply high-frequency isolating device according to claim 4, is characterized in that, described full bridge inverter unit adopts the connected mode of composite bus bar.
6. vehicle-mounted accessory power supply high-frequency isolating device according to claim 1 and 2, it is characterized in that, described isolation drive unit (4) is used for the pulse drive signal from control unit (5) to be converted to IGBT switching signal, the IGBT fault detected is fed back to control unit (5) simultaneously.
7. vehicle-mounted accessory power supply high-frequency isolating device according to claim 1 and 2; it is characterized in that; described control unit (5) is used for completing various protection, logic control and self-diagnostic function according to various feedback quantity and state information, and produces IGBT trigger impulse.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520293720.1U CN204993063U (en) | 2015-05-08 | 2015-05-08 | On -vehicle auxiliary electrical power source high frequency isolating device |
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| CN201520293720.1U CN204993063U (en) | 2015-05-08 | 2015-05-08 | On -vehicle auxiliary electrical power source high frequency isolating device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070255A (en) * | 2017-05-17 | 2017-08-18 | 中国铁道科学研究院 | A kind of hauling power device |
| CN107086824A (en) * | 2017-05-17 | 2017-08-22 | 中国铁道科学研究院 | One kind traction AuCT |
| CN107623363A (en) * | 2017-09-13 | 2018-01-23 | 嘉善中正新能源科技有限公司 | A kind of consolidation circuit of DC/DC converters and Vehicular charger |
| CN111541374A (en) * | 2020-04-30 | 2020-08-14 | 北京理工大学 | Power electric box |
| CN111969855A (en) * | 2019-11-01 | 2020-11-20 | 西安爱科赛博电气股份有限公司 | Auxiliary power supply device for guide rail electric locomotive, guide rail electric locomotive and power supply method thereof |
-
2015
- 2015-05-08 CN CN201520293720.1U patent/CN204993063U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070255A (en) * | 2017-05-17 | 2017-08-18 | 中国铁道科学研究院 | A kind of hauling power device |
| CN107086824A (en) * | 2017-05-17 | 2017-08-22 | 中国铁道科学研究院 | One kind traction AuCT |
| CN107623363A (en) * | 2017-09-13 | 2018-01-23 | 嘉善中正新能源科技有限公司 | A kind of consolidation circuit of DC/DC converters and Vehicular charger |
| CN111969855A (en) * | 2019-11-01 | 2020-11-20 | 西安爱科赛博电气股份有限公司 | Auxiliary power supply device for guide rail electric locomotive, guide rail electric locomotive and power supply method thereof |
| CN111541374A (en) * | 2020-04-30 | 2020-08-14 | 北京理工大学 | Power electric box |
| CN111541374B (en) * | 2020-04-30 | 2021-09-03 | 北京理工大学 | Power electric box |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |