CN209627251U - A kind of miniaturization High power Traction auxiliary all-in-one converter based on frame control topology - Google Patents
A kind of miniaturization High power Traction auxiliary all-in-one converter based on frame control topology Download PDFInfo
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- CN209627251U CN209627251U CN201821405085.1U CN201821405085U CN209627251U CN 209627251 U CN209627251 U CN 209627251U CN 201821405085 U CN201821405085 U CN 201821405085U CN 209627251 U CN209627251 U CN 209627251U
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Abstract
The utility model discloses a kind of, and the miniaturization High power Traction based on frame control topology assists all-in-one converter, and main circuit is made of traction convertor and AuCT, including traction convertor, AuCT and its cooling system；Wherein network voltage enters traction convertor after tractive transformer is depressured, and AuCT takes electricity from the intermediate loop of traction convertor, and output is isolated using power frequency.The utility model can be under the premise of vehicle speed of service grade be constant, reduce medium voltage grade, reduce device voltage grade, using the topological circuit form of frame control, control more traction electric machines, and traction convertor and AuCT and cooling device are integrated in a cabinet, meet the traction, braking and the requirement of auxiliary power supply of EMU, improve power density, significantly reduce volume and weight, reduce cost, meets EMU vehicle to the miniaturization of component, the requirement of economy.
Description
Technical field
The utility model belongs to Transit Equipment technical field, is related to a kind of current transformer, especially a kind of to be based on frame control
The miniaturization High power Traction of topology assists all-in-one converter.
Background technique
With flourishing for Chinese high-speed rail cause, Chinese high-speed rail already becomes one " golden business card ", from initial technology
Import, digestion and absorption, " recovery number " till now is smoothly open-minded, indicates Chinese high-speed rail entirely autonomousization, has completely certainly
Main intellectual property.Following EMU development trend is to make advanced and mature, safe and reliable, energy-saving and environment-friendly EMU series to produce
Product.Lightweight, miniaturization, economic and practical, energy conservation and environmental protection become the following EMU and its auxiliary facility critical issue to be solved.
Fig. 1 is the traction convertor circuit diagram for certain EMU that speed class is 250km/h, traction convertor
It being made of four-quadrant rectifier, intermediate loop and traction invertor, in the figure, 4QC1 and 4QC2 are two four-quadrant rectifiers,
INV1 and INV2 is two traction invertors, and two traction invertors control a traction electric machine respectively, and Lai Shixian vehicle is led
Draw and control for brake.Intermediate loop includes a series of components such as resistance, capacitor, sensor to stablize the voltage value of intermediate current.
In this existing scheme, medium voltage 3600V, power device uses the device of 6500V grade, and every power of traction motor is
650kW, the traction power of a traction convertor are 1300kW.But this existing technical solution has the following deficiencies:
1) medium voltage is high, and component stress levels are high, and volume is big, weight weight, and loss is big.
2) traction electric machine number of units is limited, and driving power is limited, causes complete machine power density low.
3) component voltage grade is high, and complete machine is at high cost.
4) heating resistor uses air-cooled, and resistance volume is big, weight weight.
5) main screw lift is excessive, and volume is big, is unable to satisfy at present to complete machine miniaturization, light-weighted technical characterstic.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of based on the small-sized of frame control topology
Change High power Traction and assists all-in-one converter.It can reduce intermediate electricity under the premise of vehicle speed of service grade is constant
Grade is pressed, device voltage grade is reduced, using the topological circuit form of frame control, controls more traction electric machines, and traction is become
Stream device and AuCT and cooling device are integrated in a cabinet, meet the traction of EMU, braking and auxiliary power supply
It is required that improving power density, hence it is evident that reduce volume and weight, reduce cost, meet EMU vehicle to component
Miniaturization, the requirement of economy.
The purpose of this utility model is achieved through the following technical solutions:
This miniaturization High power Traction based on frame control topology assists all-in-one converter, and main circuit is by traction convertor
It is constituted with AuCT, including traction convertor, AuCT and its cooling system；Wherein network voltage is through traction voltage transformation
Enter traction convertor after device decompression, AuCT takes electricity from the intermediate loop of traction convertor, and output is isolated using power frequency.
Further, above-mentioned traction convertor includes input circuit, two four-quadrant rectifiers 4QC1,4QC2, resonance electricity
Road, intermediate loop and two traction invertors INV1, INV2；Four-quadrant rectifier 4QC1 and four-quadrant rectifier 4QC2 respectively by
Two winding powers of tractive transformer, each inverter are two traction electric machine power supplies in parallel.
Further, above-mentioned four-quadrant rectifier is made of two identical four-quadrant power module parallels, each four-quadrant
It include the IGBT of several 3300V in power module；Four-quadrant rectifier is powered to traction invertor and AuCT.
Further, above-mentioned traction invertor is composed in parallel by two identical inverted power modules, each inverter power mould
It include the IGBT of several 3300V in block；Traction invertor frame control controls four asynchronous traction motors.
Further, above-mentioned resonance circuit: series resonant circuit resonance frequency is twice of fundamental frequency, for filtering out centre
The ripple that the energy stream of twice input voltage frequency generates in circuit；The structure of resonance circuit is by resonant capacitor and inductor
Composition is integrated in inside traction AuCT.
Further, above-mentioned intermediate loop is made of accumulator, measurement and protection circuit.Accumulator is by intermediate supports electricity
Container composition provides reactive power to traction electric machine, while to four-quadrant rectifier and traction to stablize intermediate circuit voltage
The higher hamonic wave that inverter generates is filtered.
Further, the miniaturization High power Traction auxiliary all-in-one converter based on frame control topology of the utility model includes
Be arranged in the intracorporal input circuit part of cabinet, resonant capacitance, intermediate loop part, two four-quadrant rectifiers being arranged symmetrically,
Two traction invertor, subordinate inverter, transformer reactance device assembly and the cooling system heat radiators and cooling system being arranged symmetrically
System ventilation blower；The transformer reactance device assembly includes power frequency isolation transformer, direct current reactor, AC reactor and resonance electricity
Sense；Cooling system also includes water pump and expansion tank, is cooled down for whole system；It further include that corresponding signal is passed into control
The measuring part of unit processed, the measuring part include voltage-current sensor, pressure sensor and temperature sensor.
Further, the chronic discharge resistance and ground resistance of the above intermediate loop part all use water-cooled resistance, water cooling
Resistance is mounted on small water-cooling base plate, is connect by quick coupling with the branch pipe of the cooling main line of water.
Further, the above quick coupling can fast insert-pull, pass through water circulating cooling band together with power module water-cooled plate
Walk the heat of heating resistor.
The utility model has the following beneficial effects:
Miniaturization High power Traction auxiliary all-in-one converter of the utility model based on frame control topology is a kind of miniaturization
The device that powerful traction auxiliary integrates, by reducing voltage class, component stress levels are reduced, and volume and weight obtains
Effective control is arrived；More traction electric machines are controlled by way of frame control, complete machine traction power increases, and driving power increases, function
Rate density increases.Resistance weight and volume is greatly reduced in the type of cooling by changing heating resistor.
Device machine volume and weight significantly reduce in the above manner, have adapted at present minimize rail traffic vehicles
With light-weighted requirement.
Detailed description of the invention
Fig. 1 is the traction convertor circuit diagram for certain EMU that the prior art is 250km/h for speed class；
Fig. 2 is the main circuit schematic diagram of the utility model；
Fig. 3 is the Water cooling resistor operation schematic diagram of the utility model；
Fig. 4 is the application schematic diagram of water-cooled resistance 13 and resistance water-cooled plate 14.
Wherein: 1 is input circuit part；2 be resonant capacitance；3 be intermediate loop part；4 be two four-quadrant rectifiers；
5 be two traction invertors；6 be subordinate inverter；7 be transformer reactance device assembly；8 be cooling system heat radiator and cooling system
System ventilation blower；9 be quick coupling；10 be cooling main line；11 be cooling branch pipe；12 be power module water-cooled plate；13 be water cooling
Resistance；14 be resistance water-cooled plate.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
The utility model assists all-in-one converter, referring to Fig. 1, main electricity based on the miniaturization High power Traction of frame control topology
It routes traction convertor and AuCT is constituted, including traction convertor, AuCT and its cooling system；Wherein power grid
Voltage enters traction convertor after tractive transformer is depressured, and AuCT takes electricity from the intermediate loop of traction convertor, defeated
It is isolated out using power frequency.
Pantograph obtains electric energy from the contact net of 25kV, supplies four quadrant convertor after being depressured by tractive transformer, and four
Secondary Side of Traction Transformer single-phase alternating current is transformed into 1800V direct current by quadrant convertor, makes traction convertor by control
Net side power factor is close to 1.The 1800V direct current of intermediate DC link is by traction invertor, in the control of traction control unit
It provides voltage, frequency adjustable power supply to traction motor under system, realizes that the traction braking of EMU and speed are adjusted.It is main
Circuit uses frame prosecutor formula, and each traction invertor frame control drives the traction electric machine of two 350kW.AuCT is become by traction
Device intermediate loop power supply is flowed, the voltage for being 3 phase 380V/50Hz by DC voltage conversion provides power supply for assistant load.
Such as Fig. 2, entire circuit includes four-quadrant rectifier 4QC1, and four-quadrant rectifier 4QC2, traction invertor INV1 are led
Draw inverter INV2, subordinate inverter INV3, resonant capacitor C31, resonant capacitor C32, resonant inductor L1, resonance electricity
Sensor L2 is power frequency isolation transformer IVTR, direct current reactor DCL, AC reactor ACL, ac filter capacitor ACC.
Wherein, in Fig. 2, the traction convertor of the utility model includes input circuit, two four-quadrant rectifier 4QC1,
4QC2, resonance circuit, intermediate loop and two traction invertors INV1, INV2；Four-quadrant rectifier 4QC1 and four-quadrant rectification
For device 4QC2 respectively by two winding powers of tractive transformer, each traction invertor is two traction electric machine power supplies in parallel.
Four-quadrant rectifier (also referred to as four-quadrant pulse rectifier) is made of two identical four-quadrant power module parallels,
It include the IGBT and related device of several 3300V in each four-quadrant power module；Four-quadrant rectifier is to traction invertor
It powers with AuCT.
Traction invertor is composed in parallel by two identical inverted power modules, includes several in each inverted power module
The IGBT and corresponding device of 3300V；Traction invertor frame control controls four asynchronous traction motors.
Resonance circuit: series resonant circuit resonance frequency is twice of fundamental frequency, for filtering out in intermediate loop twice
In the ripple that the energy stream of input voltage frequency generates；The structure of resonance circuit is made of resonant capacitor and inductor, is integrated
Inside traction AuCT.
Intermediate loop (also referred to as intermediate DC circuit) is made of accumulator, measurement and protection circuit.Accumulator is in
Between support capacitor form, to stablize intermediate circuit voltage, to traction electric machine provide reactive power, while to four-quadrant rectify
The higher hamonic wave that device and traction invertor generate is filtered.In the most preferred embodiment of the utility model, intermediate circuit voltage is
1800V, after traction convertor medium voltage reduces, the power device of four-quadrant rectifier and inverted power module will by 6500V
For 3300V, no matter from volume or in price, there is very big advantage.
Referring to Fig. 3: being based on above scheme, the miniaturization High power Traction auxiliary one based on frame control topology of the utility model
Body formula current transformer, whole device is by cabinet body and traction convertor, AuCT and its cooling system three zones part
Composition, specifically include be arranged in the intracorporal input circuit part 1 of cabinet, (resonant inductance is integrated in transformer reactance device to resonant capacitance 2
In component 7), 4, two traction invertors being arranged symmetrically 5 of the four-quadrant rectifier being arranged symmetrically of intermediate loop part 3, two,
Subordinate inverter 6, transformer reactance device assembly 7 and cooling system heat radiator and cooling system ventilation blower 8；The transformer reactance
Device assembly 7 includes power frequency isolation transformer, direct current reactor, AC reactor and resonant inductance；Cooling system also includes water pump
And expansion tank, it is cooled down for whole system；In addition, the device further includes that corresponding signal is passed to the one of control unit
Measurement series component, these measuring parts include the components such as voltage-current sensor, pressure sensor and temperature sensor.Dress
Corresponding signal can be passed to control unit when setting work, device is guaranteed by the control and protection act of a series of complex
Normal work.
Referring to fig. 4: the chronic discharge resistance and ground resistance of intermediate loop part 3 all use water-cooled resistance 13, water cooling
Resistance 13 is mounted in small resistance water-cooled plate 14, is connect by quick coupling 9 with the cooling branch pipe 11 of cooling main line 10.
Quick coupling 9 can fast insert-pull, and no leakage takes away heating electric by water circulating cooling together with power module water-cooled plate 12
The heat of resistance, to guarantee the normal work of component.The heating resistor of the utility model passes through water circulating cooling, resistance volume weight
Amount is greatly lowered, and weight reduces about 30%, and volume reduces 50%, has adapted to the miniaturization of current EMU, light-weighted has wanted
It asks.
In the most preferred embodiment of the utility model, each inverter frame control drives 2 traction electricity inside traction convertor
Machine, whole current transformer drive 4 traction electric machines, and every power of traction motor is 350kW, and complete machine power is 1400kW, and comparison is
There is the 1300kW of scheme, traction power is bigger, and device volume reduces, and power density is bigger.
Power device voltage class reduces, and intermediate circuit voltage grade reduces, entire traction convertor internal part voltage
Grade reduces, and component weight mitigates, and electric clearance reduces, and has efficiently controlled the weight of complete machine, complete machine realizes miniaturization.
Claims (9)
1. a kind of miniaturization High power Traction based on frame control topology assists all-in-one converter, main circuit by traction convertor and
AuCT is constituted, including traction convertor, AuCT and its cooling system, which is characterized in that network voltage is through leading
Enter traction convertor after drawing transformer pressure-reducing, AuCT takes electricity from the intermediate loop of traction convertor, and output uses work
Frequency is isolated.
2. the miniaturization High power Traction according to claim 1 based on frame control topology assists all-in-one converter, special
Sign is that the traction convertor includes input circuit, two four-quadrant rectifiers 4QC1,4QC2, resonance circuit, intermediate loop
With two traction invertors INV1, INV2；Four-quadrant rectifier 4QC1 and four-quadrant rectifier 4QC2 are respectively by tractive transformer
Two winding powers, each inverter is two traction electric machines power supplies in parallel.
3. the miniaturization High power Traction according to claim 2 based on frame control topology assists all-in-one converter, special
Sign is that the four-quadrant rectifier is made of two identical four-quadrant power module parallels, each four-quadrant power module
The interior IGBT including several 3300V；Four-quadrant rectifier is powered to traction invertor and AuCT.
4. the miniaturization High power Traction according to claim 2 based on frame control topology assists all-in-one converter, special
Sign is that the traction invertor is composed in parallel by two identical inverted power modules, includes in each inverted power module
The IGBT of several 3300V；Traction invertor frame control controls four asynchronous traction motors.
5. the miniaturization High power Traction according to claim 2 based on frame control topology assists all-in-one converter, special
Sign is that the resonance circuit: series resonant circuit resonance frequency is twice of fundamental frequency, for filtering out two in intermediate loop
The ripple that the energy stream of times input voltage frequency generates；The structure of resonance circuit is made of resonant capacitor and inductor, collection
At inside traction AuCT.
6. the miniaturization High power Traction according to claim 1 based on frame control topology assists all-in-one converter, special
Sign is that the intermediate loop is made of accumulator, measurement and protection circuit；Accumulator is by intermediate supports capacitor group
At to stablize intermediate circuit voltage, to traction electric machine offer reactive power, while to four-quadrant rectifier and traction invertor
The higher hamonic wave of generation is filtered.
7. the miniaturization High power Traction auxiliary integral type described in -6 any one based on frame control topology becomes according to claim 1
Flow device, which is characterized in that including being arranged in the intracorporal input circuit part of cabinet (1), resonant capacitance (2), intermediate loop part
(3), two four-quadrant rectifiers (4) being arranged symmetrically, two be arranged symmetrically traction invertor (5), subordinate inverter (6),
Transformer reactance device assembly (7) and cooling system heat radiator and cooling system ventilation blower (8)；The transformer reactance device assembly
It (7) include power frequency isolation transformer, direct current reactor, AC reactor and resonant inductance；Cooling system also includes water pump and swollen
Swollen water tank is cooled down for whole system；It further include the measuring part that corresponding signal is passed to control unit, the measurement portion
Part includes voltage-current sensor, pressure sensor and temperature sensor.
8. the miniaturization High power Traction according to claim 7 based on frame control topology assists all-in-one converter, special
Sign is that the chronic discharge resistance and ground resistance of intermediate loop part (3) all use water-cooled resistance, and water-cooled resistance is mounted on
On small water-cooling base plate, it is connect by quick coupling with the branch pipe of the cooling main line of water.
9. the miniaturization High power Traction according to claim 8 based on frame control topology assists all-in-one converter, special
Sign is, the quick coupling can fast insert-pull, pass through water circulating cooling together with power module water-cooled plate and take away heating electric
The heat of resistance.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112350587A (en) * | 2020-10-30 | 2021-02-09 | 中车永济电机有限公司 | Traction-assisted converter and device |
| CN112713785A (en) * | 2020-12-22 | 2021-04-27 | 中车永济电机有限公司 | Novel converter main circuit |
| CN112713750A (en) * | 2020-12-21 | 2021-04-27 | 中车永济电机有限公司 | Power resistance integrated component for traction auxiliary converter |
| CN112737356A (en) * | 2020-12-25 | 2021-04-30 | 中车永济电机有限公司 | High-power permanent-magnet direct-drive freight locomotive traction converter |
| CN112737354A (en) * | 2020-12-22 | 2021-04-30 | 中车永济电机有限公司 | High-power permanent-magnet direct-drive freight locomotive traction converter |
| WO2021135896A1 (en) * | 2019-12-31 | 2021-07-08 | 中车永济电机有限公司 | Electric drive system, converter control method, and electric locomotive |
| CN113147799A (en) * | 2020-01-21 | 2021-07-23 | 株洲中车时代电气股份有限公司 | Converter and traction transmission system of hybrid power locomotive applying same |
| CN113770356A (en) * | 2021-09-06 | 2021-12-10 | 广东工业大学 | Processing technology and system for preparing metal single element two-dimensional topological material |
| WO2023082442A1 (en) * | 2021-11-12 | 2023-05-19 | 中车永济电机有限公司 | Integrated power supply and multi-channel auxiliary transmission system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135896A1 (en) * | 2019-12-31 | 2021-07-08 | 中车永济电机有限公司 | Electric drive system, converter control method, and electric locomotive |
| CN113147799A (en) * | 2020-01-21 | 2021-07-23 | 株洲中车时代电气股份有限公司 | Converter and traction transmission system of hybrid power locomotive applying same |
| CN113147799B (en) * | 2020-01-21 | 2024-01-23 | 株洲中车时代电气股份有限公司 | Converter and traction transmission system of hybrid power locomotive applying same |
| CN112350587A (en) * | 2020-10-30 | 2021-02-09 | 中车永济电机有限公司 | Traction-assisted converter and device |
| CN112713750A (en) * | 2020-12-21 | 2021-04-27 | 中车永济电机有限公司 | Power resistance integrated component for traction auxiliary converter |
| CN112713785A (en) * | 2020-12-22 | 2021-04-27 | 中车永济电机有限公司 | Novel converter main circuit |
| CN112737354A (en) * | 2020-12-22 | 2021-04-30 | 中车永济电机有限公司 | High-power permanent-magnet direct-drive freight locomotive traction converter |
| CN112737356A (en) * | 2020-12-25 | 2021-04-30 | 中车永济电机有限公司 | High-power permanent-magnet direct-drive freight locomotive traction converter |
| CN113770356A (en) * | 2021-09-06 | 2021-12-10 | 广东工业大学 | Processing technology and system for preparing metal single element two-dimensional topological material |
| CN113770356B (en) * | 2021-09-06 | 2022-04-08 | 广东工业大学 | Processing method and system for preparing metal single element two-dimensional topological material |
| WO2023082442A1 (en) * | 2021-11-12 | 2023-05-19 | 中车永济电机有限公司 | Integrated power supply and multi-channel auxiliary transmission system |
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