CN114337313B - Integrated power supply and multichannel auxiliary transmission system - Google Patents
Integrated power supply and multichannel auxiliary transmission system Download PDFInfo
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- CN114337313B CN114337313B CN202111337483.0A CN202111337483A CN114337313B CN 114337313 B CN114337313 B CN 114337313B CN 202111337483 A CN202111337483 A CN 202111337483A CN 114337313 B CN114337313 B CN 114337313B
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- 239000003990 capacitor Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
The invention belongs to the technical application field of rail transit, and discloses a double-input integrated power supply and multichannel auxiliary transmission system for taking power from a middle bus of a traction system. The integrated power supply and multichannel auxiliary transmission system is suitable for a two-to-two whole-to-two inverse traction system structure of two middle buses; the integrated auxiliary power supply system comprises a traction system middle bus, wherein the integrated auxiliary power supply system comprises a train power supply unit and an auxiliary unit, the train power supply unit is connected with the traction system middle bus and is used for providing direct current with a required voltage level for a rear stage, the rear stage is connected with a charging interface and the auxiliary unit, the auxiliary unit is used for providing electric energy conversion for a rear stage auxiliary reluctance motor, and the reluctance motor drives a fan to provide power for a water pump, a heat dissipation system and the like.
Description
Technical Field
The invention belongs to the technical application field of rail transit, and discloses a double-input integrated power supply and multichannel auxiliary transmission system for taking power from a middle bus of a traction system.
Background
The variable flow systems in the rail transit field are divided into two types, one type is a traction system, and the other type is an auxiliary transmission system; the auxiliary transmission system has two main circuit topological structures, one is that the secondary side of the transformer is powered, and the auxiliary transmission system is provided with intermediate voltage with required level after rectification; the other is to adopt the middle bus of the traction system to take electricity, and the form directly takes electricity from the traction system, so that an independent rectifier is omitted, and the power supply has the characteristics of small volume and light weight and is mainly used in the field of motor vehicles with higher weight requirements.
In practical application, a two-level topological structure is formed by adopting silicon devices such as IGBT (insulated gate bipolar transistor) and the like, under the normal condition, the two-level structure has higher switching frequency, more serious electromagnetic interference and larger heating value for an auxiliary power supply system, a larger radiator design is required, and the buck chopper needs inductance for filtering, so that the volume and the weight are relatively larger. Specifically, the two-level step-down chopper series supply and auxiliary power supply system described in the prior art has the following disadvantages:
The switching frequency is high, the electromagnetic interference is high, the loss is high, and the train supply and the auxiliary power supply system are separated; the auxiliary power supply system usually takes power from one middle bus of the traction system, if the traction system is abnormal, the whole auxiliary power supply system is completely stopped, so that the traction system is completely stopped, and the reliability and redundancy of the scheme need to be improved.
Disclosure of Invention
The invention discloses an integrated power supply and multichannel auxiliary transmission system, which omits a step-down chopper inductor, can realize the characteristics of two levels under high switching frequency under lower switching frequency, simultaneously reduces the influence of electromagnetic interference, has better harmonic characteristic and dynamic performance, has higher adaptability and flexibility, and simultaneously has double-input characteristic, namely, for a traction system with two integral and two inverse buses, the power taking mode of an intermediate bus adopts the power taking mode of two intermediate buses with double inputs, thereby improving the running reliability of the whole system.
The invention is realized by adopting the following technical scheme: an integrated power supply and multichannel auxiliary transmission system comprises a whole train power supply system and an auxiliary unit; the train power supply system of the whole train consists of two train power supply units, wherein the power supply input ends of the two train power supply units are mutually independent, power is taken from two groups of different middle buses of the traction converter respectively, and the output ends are connected through a circuit breaker, so that independent power supply and parallel power supply can be realized; the output ends of the two train supply units respectively supply power to the auxiliary units and the train direct current load, and the auxiliary units supply power to the three fans; the auxiliary unit comprises a three-phase inverter, a filtering loop and a protection loop; the protection loop of the auxiliary unit is a series-parallel protection cabinet formed by three-phase circuit breakers, and the series-parallel protection cabinet is formed by five circuit breakers, wherein the three circuit breakers are respectively connected in series on three fan loops, and the two circuit breakers are connected in parallel on the three fan loops. When one of the two column supply units is damaged, a circuit breaker between the output ends of the two column supply units is closed, and one column supply unit supplies power for the two groups of loads.
The technical scheme adopts a double-input design with redundancy design, and solves the problems that after a group of traction systems are in failure, an auxiliary power supply system is stopped, the traction systems are stopped completely, and power loss is caused.
Further, the single column supply unit is composed of four parts, namely a primary protection unit, a primary inverter unit, a high-frequency transformer unit and a secondary rectifier unit; the primary protection unit is connected in series with the positive bus by a diode, and when electricity is taken from the traction middle bus, the primary protection unit can only flow forward, but cannot feed energy reversely.
The primary inverter unit consists of two voltage dividing resistors R1 and R2, capacitors C1 and C2 and 6 IGBTs, wherein the C1 and C2 are connected in series, the capacitance values of the C1 and C2 are the same, and the R1 and the R2 are equal and are respectively connected in parallel with the C1 and C2; the 6 IGBTs form a bridge arm, wherein four IGBTs are connected in series to form an outer loop, the other two IGBTs are connected in series to form an inner loop, and the middle points of the two IGBTs in the inner loop are connected with the middle points of the divider resistors R1 and R2 and the capacitors C1 and C2; the midpoint of the inner loop and the midpoint of the outer loop are led out to serve as output points and are connected with the high-frequency transformer unit;
The high-frequency transformer unit is composed of one high-frequency transformer Tr; the secondary rectifier consists of two parts, wherein one part consists of a bridge circuit consisting of 4 IGBTs and a rectifying circuit consisting of a capacitor C3 and a resistor R3; the other part is connected in series with the positive electrode of the power output end of the column supply unit by a diode, and the diode is used for forward current flow and reverse cut-off to protect the whole column supply unit.
The secondary rectifier comprises two methods, under normal working conditions, the IGBT is used as a diode, and only a reverse diode of the IGBT is used to form a circuit topology structure without rectification control; under special working conditions, the IGBT is used as a normal switching tube, and particularly when the primary side voltage level of the transformer is low, the secondary rectifier is combined with the secondary side leakage inductance of the transformer, and a boosting rectification control mode is adopted to supply power to the auxiliary units of the later stage, so that the power supply reliability is improved.
The three-phase inverter of the auxiliary unit is connected to the output end of the secondary rectifier through two serially connected supporting resistors, and each supporting resistor is connected with a supporting capacitor in parallel; the inverter consists of three bridge arms, each bridge arm consists of an outer loop formed by connecting four IGBTs in series and an inner loop formed by connecting two IGBTs in series, wherein the midpoint position of the two IGBTs in the inner loop is connected with the midpoint of the supporting resistor and the supporting capacitor;
the middle point of the outer loop of each bridge arm is an output point position of the three-phase bridge arm, namely, the taps of the three middle points are output ports of the three-phase inverter; the rear end of the output port is connected with a filter loop.
The filtering loop of the auxiliary unit is composed of three inductors LA, LB and LC respectively connected to three output ports of the three-phase inverter and three capacitors Cf1, cf2 and Cf3 which are mutually connected in parallel, wherein the three inductors LA, LB and LC have the same inductance value, and the capacitors Cf1, cf2 and Cf3 have the same capacitance value; the LA output end is connected with the midpoints of Cf1 and Cf3, the LB output end is connected with the midpoints of Cf1 and Cf2, and the LC output end is connected with the midpoints of Cf2 and Cf 3.
The fan adopts a synchronous reluctance motor as power.
The technical scheme solves the following technical problems:
1. Auxiliary column supply is integrated, a main circuit topological structure can supply power to a column supply system and an auxiliary system at the same time, and the system is more integrated and modularized;
2. By adopting a main circuit topological structure, the performance of the two-level high switching frequency can be realized under the lower switching frequency, and the influence of system loss and electromagnetic interference is reduced;
3. The auxiliary system adopts an auxiliary synchronous reluctance motor as the power of the fan, and is more energy-saving and efficient compared with the traditional asynchronous motor.
The technical scheme of the invention has the beneficial effects that:
1. an integrated power supply and auxiliary transmission system and an auxiliary train supply system for bidirectionally taking power from an intermediate bus are designed;
2. The double-row power supply unit can expand power supply and improve power supply reliability;
3. Under the lower switching frequency, the power supply quality of the auxiliary unit is improved, the fan voltage has better harmonic characteristic, and the fan loss is reduced;
4. each unit of the integrated power supply and auxiliary transmission system has corresponding protection measures, so that the expansion and influence of faults are effectively avoided.
Drawings
Figure 1 shows a traction converter main circuit topology.
Fig. 2 is a schematic diagram of a cell master circuit.
Fig. 3 is a main circuit topology of the auxiliary unit.
Detailed Description
1. The control method belongs to the technical application field of rail transit, and introduces a double-input integrated power supply and auxiliary transmission system for taking power from a middle bus of a traction system, wherein the system is applicable to a two-to-two whole-to-two inverse traction system structure of two middle buses; the integrated auxiliary power supply system comprises a traction system middle bus, wherein the integrated auxiliary power supply system comprises a train power supply unit and an auxiliary unit, the train power supply unit is connected with the traction system middle bus and is used for providing direct current with a required voltage level for a rear stage, the rear stage is connected with a charging interface and the auxiliary unit, the auxiliary unit is used for providing electric energy conversion for a rear stage auxiliary reluctance motor, and the reluctance motor drives a fan to provide power for a water pump, a heat dissipation system and the like.
2. As shown in fig. 2, the whole train power supply system is composed of two train power supply units, namely a train power supply unit 1 and a train power supply unit 2, wherein the input ends of the two train power supplies are mutually independent, power is respectively taken from two groups of different middle buses of the traction converter, and the output ends are connected through a circuit breaker, so that independent power supply and parallel power supply can be realized; when one of the row supply units 1 or the row supply units 2 is damaged, the circuit breaker is closed, and one of the row supply units supplies power for two groups of loads, so that the whole vehicle power supply system is guaranteed to have high reliability; the whole vehicle power supply load is divided into two types, one is used for supplying power to the auxiliary unit, and the other is used for directly providing stable direct current for the train direct current load.
3. The single column supply unit consists of four parts, namely a primary protection unit, a primary inverter unit, a high-frequency transformer unit and a secondary rectifier unit.
4. The primary protection unit mainly comprises a diode D01/D02 which is connected in series on a positive bus, and when electricity is taken from a traction middle bus, the primary protection unit can only flow forward, but cannot feed energy reversely, so that the influence on the voltage fluctuation of the side of the traction middle bus is reduced.
5. The primary inverter units of the two groups are identical, the primary inverter unit mainly comprises two voltage dividing resistors, capacitors which are connected in series and parallel and 6 IGBTs, R1 and R2 are equal and are respectively connected in parallel to C1 and C2, and the capacitance values of C1 and C2 are identical.
6. The high-frequency transformer unit mainly comprises a high-frequency transformer Tr, and mainly comprises the isolation and step-down functions of the output voltage of a primary inverter.
7. The secondary rectifier consists of two parts, wherein one part is provided with a bridge circuit formed by 4 IGBTs and a rectifying circuit formed by C3 and R3; the other part is connected with the positive electrode of the power supply in series by a D12/D12 diode, and the diode is utilized to forward flow and reverse cut off the current so as to protect the power supply of the whole row; the secondary rectifier comprises two methods, under normal working conditions, the IGBT is used as a diode, and only a reverse diode of the IGBT is used to form a circuit topology structure which does not control rectification; under special working conditions, the IGBT is used as a normal switching tube, and particularly when the primary side voltage level of the transformer is low, the secondary rectifier is combined with the secondary side leakage inductance of the transformer, and a boosting rectification control mode is adopted to supply power to the auxiliary units of the later stage, so that the power supply reliability is improved.
8. The load of the train supply unit is divided into two parts, wherein one part is a train supply load without secondary electric energy conversion, and the other part is a fan load subjected to secondary electric energy conversion by the auxiliary unit; the auxiliary unit is composed of three parts, namely a three-phase inverter, a protection loop and a permanent magnet blower, as shown in fig. 3. The three-phase inverter is provided with two series resistors R4 and R5 which are connected to the output end of the secondary rectifier, and each resistor is connected with a supporting capacitor C4 and C5 in parallel; the inverter is composed of three bridge arms, each bridge arm is composed of an outer loop composed of four IGBTs in series connection and an inner loop composed of two IGBTs in series connection, wherein the midpoint position of the two IGBTs in the inner loop is connected with the midpoint of the supporting resistor and the supporting capacitor.
9. The middle point of the outer loop of each bridge arm is an output point position of the three-phase bridge arm, namely, the taps of the three middle points are output ports of the three-phase inverter; the rear end of the output port is connected with a filter loop.
10. The filtering loop mainly comprises series inductors LA, LB and LC and parallel capacitors Cf1, cf2 and Cf3, the three-phase inverter adopts a novel topological structure, the filtering inductors and the capacitors can be designed to be smaller, and the volume and the cost of equipment are reduced; connected to the filter circuit is a protection circuit for the auxiliary unit.
11. The protection loop of the auxiliary unit is a series-parallel protection cabinet consisting of three-phase circuit breakers; the device is composed of five circuit breakers, wherein the three circuit breakers are connected in series with three fan loops, and the two circuit breakers are connected in parallel with the three fan loops. When the circuit breakers of the three series circuits have clamping faults, the fans can be normally powered by the closing of other circuit breakers, so that the fans can be ensured to normally work, and the operation reliability of the auxiliary fans is improved.
12. The protection of the whole vehicle power supply system is divided into three types, including transformer isolation, circuit breakers, diodes and the like, and modes of high-voltage isolation, single-phase current flow isolation, main topology circuit breaking and the like are respectively used; wherein, the input end of the auxiliary unit is provided with an auxiliary breaker; the train power supply load input end is provided with a train power supply breaker.
The key points of the technology of the invention are as follows:
1. the integrated power supply and auxiliary transmission system comprises a main topology circuit;
2. the design, the composition and the working condition switching method of a main topology loop of the train supply unit and the auxiliary power supply unit are adopted;
3. And the protection design of the row supply unit and the auxiliary unit and the power supply function expansion are adopted.
Claims (8)
1. An integrated power supply and multichannel auxiliary transmission system is characterized by comprising a whole train power supply system and an auxiliary unit; the train power supply system of the whole train consists of two train power supply units, wherein the power supply input ends of the two train power supply units are mutually independent, power is taken from two groups of different middle buses of the traction converter respectively, and the output ends are connected through a circuit breaker, so that independent power supply and parallel power supply can be realized; when one of the two column supply units is damaged, a circuit breaker between the output ends of the two column supply units is closed, and one column supply unit supplies power for the two groups of loads; the output ends of the two train supply units respectively supply power to the auxiliary units and the train direct current load, and the auxiliary units supply power to the three fans; the auxiliary unit comprises a three-phase inverter, a filtering loop and a protection loop; the protection loop of the auxiliary unit is a series-parallel protection cabinet formed by three-phase circuit breakers, and the series-parallel protection cabinet is formed by five circuit breakers, wherein the three circuit breakers are respectively connected in series on three fan loops, and the two circuit breakers are connected in parallel on the three fan loops.
2. An integrated power supply and multichannel auxiliary transmission system as claimed in claim 1, characterized in that the single train supply unit is composed of four parts, namely a primary protection unit, a primary inverter unit, a high-frequency transformer unit and a secondary rectifier unit; the primary protection unit is connected in series with the positive bus by a diode, and when electricity is taken from the traction middle bus, the primary protection unit can only flow forward, but cannot feed energy reversely.
3. The integrated power supply and multichannel auxiliary transmission system of claim 2, wherein the primary inverter unit consists of two divider resistors R1 and R2, capacitors C1 and C2 and 6 IGBTs, wherein the capacitors C1 and C2 are connected in series, the capacitance values of the capacitors C1 and C2 are the same, and the resistors R1 and R2 are equal and are respectively connected in parallel with the capacitors C1 and C2; the 6 IGBTs form a bridge arm, wherein four IGBTs are connected in series to form an outer loop, the other two IGBTs are connected in series to form an inner loop, and the middle points of the two IGBTs in the inner loop are connected with the middle points of the divider resistors R1 and R2 and the capacitors C1 and C2; the middle point of the inner loop and the middle point of the outer loop are led out as output points and are connected with the high-frequency transformer unit.
4. An integrated power and multi-channel auxiliary transmission system as claimed in claim 3, wherein the high-frequency transformer unit is constituted by a high-frequency transformer Tr; the secondary rectifier consists of two parts, wherein one part consists of a bridge circuit consisting of 4 IGBTs and a rectifying circuit consisting of a capacitor C3 and a resistor R3; the other part is connected in series with the positive electrode of the power output end of the column supply unit by a diode, and the diode is used for forward current flow and reverse cut-off to protect the whole column supply unit.
5. An integrated power supply and multichannel auxiliary transmission system as claimed in any of claims 2-4, characterized in that the three-phase inverter of the auxiliary unit is connected to the output of the secondary rectifier by two series-connected supporting resistors, each of which is connected in parallel with a supporting capacitor; the inverter consists of three bridge arms, each bridge arm consists of an outer loop formed by connecting four IGBTs in series and an inner loop formed by connecting two IGBTs in series, wherein the midpoint position of the two IGBTs in the inner loop is connected with the midpoint of the supporting resistor and the supporting capacitor;
the middle point of the outer loop of each bridge arm is an output point position of the three-phase bridge arm, namely, the taps of the three middle points are output ports of the three-phase inverter; the rear end of the output port is connected with a filter loop.
6. The integrated power supply and multichannel auxiliary transmission system according to claim 5, wherein the filter loop of the auxiliary unit is composed of three inductors LA, LB, LC and three capacitors Cf1, cf2, cf3 connected in parallel with each other and respectively connected to three output ports of the three-phase inverter, wherein the inductors LA, LB, LC have the same inductance value, and the capacitors Cf1, cf2, cf3 have the same capacitance value; the LA output end is connected with the midpoints of Cf1 and Cf3, the LB output end is connected with the midpoints of Cf1 and Cf2, and the LC output end is connected with the midpoints of Cf2 and Cf 3.
7. An integrated power and multi-channel auxiliary transmission system according to any one of claims 1-4, wherein the auxiliary unit input is provided with an auxiliary breaker; the train power supply load input end is provided with a train power supply breaker.
8. An integrated power and multi-channel auxiliary transmission system according to any of claims 1-4 wherein said fan is powered by a synchronous reluctance motor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111337483.0A CN114337313B (en) | 2021-11-12 | 2021-11-12 | Integrated power supply and multichannel auxiliary transmission system |
| PCT/CN2021/142192 WO2023082442A1 (en) | 2021-11-12 | 2021-12-28 | Integrated power supply and multi-channel auxiliary transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111337483.0A CN114337313B (en) | 2021-11-12 | 2021-11-12 | Integrated power supply and multichannel auxiliary transmission system |
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| Publication Number | Publication Date |
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| CN114337313A CN114337313A (en) | 2022-04-12 |
| CN114337313B true CN114337313B (en) | 2024-05-14 |
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| CN202111337483.0A Active CN114337313B (en) | 2021-11-12 | 2021-11-12 | Integrated power supply and multichannel auxiliary transmission system |
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| WO (1) | WO2023082442A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110834550A (en) * | 2019-11-07 | 2020-02-25 | 中车永济电机有限公司 | Vehicle AC transmission system |
| CN111092553A (en) * | 2019-10-21 | 2020-05-01 | 华中科技大学 | Bidirectional DC/DC converter based on isolated full-bridge ANPC and H bridge |
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| DE102008009512A1 (en) * | 2008-02-15 | 2009-09-03 | Bombardier Transportation Gmbh | Supply of auxiliary operations in a rail vehicle with electrical energy |
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| CN109450285B (en) * | 2018-11-01 | 2023-10-31 | 北京交通大学 | Main and auxiliary integrated mode energy bidirectional flow auxiliary power supply system for rail transit vehicle |
| CN109606112A (en) * | 2019-01-23 | 2019-04-12 | 山东朗进科技股份有限公司 | A kind of rail traffic vehicles indoor air supply system |
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- 2021-11-12 CN CN202111337483.0A patent/CN114337313B/en active Active
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| CN102969920A (en) * | 2012-12-12 | 2013-03-13 | 北京动力机械研究所 | Bidirectional inverter with dual operating modes |
| CN104648169A (en) * | 2015-01-27 | 2015-05-27 | 株洲南车时代电气股份有限公司 | Power supplying device for electric locomotive and train |
| CN206727910U (en) * | 2017-05-17 | 2017-12-08 | 中国铁道科学研究院 | One kind traction AuCT |
| CN109905048A (en) * | 2017-12-08 | 2019-06-18 | 台达电子企业管理（上海）有限公司 | Tri-level circuit neutral-point voltage balance method |
| CN109167518A (en) * | 2018-10-16 | 2019-01-08 | 东北大学 | A kind of vehicle power supply bidirectional DC-DC converter and its control method |
| CN112542830A (en) * | 2019-09-20 | 2021-03-23 | 深圳中瀚云科技股份有限公司 | Power supply system |
| CN111092553A (en) * | 2019-10-21 | 2020-05-01 | 华中科技大学 | Bidirectional DC/DC converter based on isolated full-bridge ANPC and H bridge |
| CN110834550A (en) * | 2019-11-07 | 2020-02-25 | 中车永济电机有限公司 | Vehicle AC transmission system |
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| WO2023082442A1 (en) | 2023-05-19 |
| CN114337313A (en) | 2022-04-12 |
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