CN204488519U - A kind of SS3 type electric locomotive auxiliary converter system - Google Patents
A kind of SS3 type electric locomotive auxiliary converter system Download PDFInfo
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- CN204488519U CN204488519U CN201420249473.0U CN201420249473U CN204488519U CN 204488519 U CN204488519 U CN 204488519U CN 201420249473 U CN201420249473 U CN 201420249473U CN 204488519 U CN204488519 U CN 204488519U
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Abstract
The utility model provides a kind of SS3 type electric locomotive auxiliary converter system, in the main circuit scheme of AuCT, adopt the circuit structure of " whole four inverse ", according to the load of subsidiary engine operating mode reasonable distribution, when having taken into account redundancy backup, fault, load switches and the many-side such as transfer, " one is whole " adopts phase control rectifier scheme, the simplest to the reforming technology of main transformer, is highly suitable for transformation on existing locomotive and implements; Also the overall technological scheme being its main circuit version with friendship-straight locomotive phase control rectifier matches; The redundancy backup that " how inverse " is inverter, during fault, auxiliary load switching, transfer provide possibility, ensure that auxiliary system reliability of operation.According to subsidiary engine operating condition, to each inverter distribution load, ensure that the high efficiency that subsidiary engine runs and reliability.
Description
Technical field
The invention belongs to electric locomotive power supply system, particularly relate to SS3 type electric locomotive auxiliary converter system.
Background technology
Along with the fast development of China's economy, also just there is change with rapid changepl. never-ending changes and improvements in the railway cause of China, the continuous expansion of railway speed increase scope, and building of the railway of more renewals, describes China railways cause and develop rapidly.While fast development, how ensureing motorcycle safety high-speed cruising and normally run in the road conditions of complexity, oneself is through becoming the focus of current railway interests.The running condition of train is not only related to the safety of passenger, and national economy is had a great impact, as the prevailing traffic mode in China's carrier, railway transportation plays very important role always, once railway or train break down, huge economic loss and societal consequence will be caused.2008 are during spring transportation because freezing disaster causes the electric locomotive traffic interruptions of Beijing-Guangzhou Railway Hunan section, cause lot cargo overstock and passenger be detained, its economic loss and social influence obvious to all.
Electric Locomotive Auxiliary System is the important component part of electric locomotive; mainly comprise ventilation and cooling system, compressor, air-conditioning etc., its Main Function is for traction and brake system provide safeguard; ensure that electric locomotive main circuit system gives full play to its power, guarantee that locomotive normally runs.Can its quality be directly connected to locomotive and normally run.The power supply mode of original Arno converter power supply mode of domestic SS3 type electric locomotive, as shown in Figure 1, accepts by Arno converter the single phase industrial frequence alternating current that electric locomotive main transformer assists winding, for auxiliary unit is powered after " splitting it " three-phase electricity.But there is shortcomings in this power supply mode:
(1) Arno converter voltage symmetry degree, degree of balance, the stability of powering to helper motor is all poor.Arno converter is only under nominal input voltage AC397V (corresponding contact system pressure 25kV) and no-load condition, just three-phase symmetrical can be formed, the AC380V power supply voltage of balance, and the actual input voltage of Arno converter is fluctuation in AC302V ~ AC460V (corresponding net pressure 19kV ~ 29kV) scope, and load is often (as traction and braking according to locomotive operation operating mode, wind etc. beaten by compressor) and change, the visible three-phase alternating voltage exported by Arno converter is often overbalance, asymmetric, fluctuation, time serious, degree of asymmetry is greater than 10%, magnitude of a voltage fluctuation is more than 30%.Asymmetric and the deficient overbalance of power supply voltage, can cause helper motor to generate heat serious, affect the service life of helper motor.In actual applications, in order to make up the degree of asymmetry of power supply voltage, often at helper motor (as traction is ventilated and braking fan motor) input side connect " drawing symmetry " power capacitor bank, also need the associated contact device of switched capacitor, device compares very complicated, have impact on helper motor reliability of operation.The voltage of Arno converter supply helper motor fluctuates with the fluctuation of its input voltage and load, and the power supply rated voltage of helper motor is AC380V, and fluctuation range is-30%-+30% about.Especially when net presses lower or heavier loads, helper motor output voltage is lower, can not fully play its power, and can not run under rating horsepower and rated speed of rotation, operating efficiency is lower.In fact the helper motor of electric locomotive is all in most of the cases that derate is run, and there is the un-reasonable phenomenon of " low load with strong power ".
(2) Arno converter machine starts complicated, and potential faults is given prominence to, and reliability is poor.Arno converter can only starting under no load, can not loaded starting, only after the complete proceed-to-send of Arno converter, just helper motor load can be dropped into one by one.The general cranking time of Arno converter, all at more than 10s, during starting in power supply mutually and the alternate access starting resistance of generating, is abutted against tentaculum again and starting resistance is cut away when proceed-to-send.Once the action of excision starting resistance was lost efficacy, or there occurs loaded starting phenomenon, all can cause Arno converter start fail, helper motor single phase power supply (being commonly called as " walking single-phase ") will be caused, can scaling loss Arno converter and helper motor time serious.Contactless switch all disjunctions under big current (about 200A) of excision starting resistance, the service life of contactless switch is also affected, and this is also potential faults.
(3) noise of Arno converter operation is large with vibrations.Arno converter belongs to motion (rotation) formula power supply, and compared with state type (as AuCT) power supply, noise and vibration is all larger, and this working environment for driver and conductor is disadvantageous.
(4) Arno converter is powered to helper motor, and starting current is large, big energy-consuming.When Arno converter is powered to helper motor, helper motor is total head full voltage starting (non-soft start), starting current large (more than 5 times for rated current).Power supply rush current large like this, can affect the service life of helper motor, consumes energy also very large.
(5) Arno converter is on station section is stopped, and should not shut down, cause energy consumption, be unfavorable for energy-conservation, increases machine running noises also to station section.Locomotive is when section of standing is stopped, and for ensureing airduct air pressure, compressor random self-starting can beat wind; start complicated, time-consuming shortcoming because Arno converter exists, so often locomotive is when section of standing stops, Arno converter can not be shut down; this both consumed energy, and increased machine running noises also to station section.
(6) because Arno converter can not be with a year full voltage starting, locomotive, when by contact system phase-splitting section, often needs to turn off each helper motor, then turns off Arno converter.After by phase-splitting section, first start Arno converter, then start each helper motor one by one, time-consuming effort, the work capacity during adding phase-splitting to department occupant.
(7) three plase alternating current of Arno converter supply helper motor determines frequency (50Hz), and the frequency control that can not realize helper motor runs (temperature as according to the required wind speed of heat radiation or exothermic body), and this is also unfavorable for energy-conservation.
(8) when locomotive shed seizure test, because locomotive general assembly is debugged without single-phase Large Copacity source of AC in storehouse, so during the seizure test of storehouse, the operation of general test helper motor, cannot do experiment to miscellaneous equipment in Arno converter and auxiliary power supply loop.
(9) quality of powering due to Arno converter and inferior quality, locomotive is that air-conditioner set needs to set up air conditioner power source and powers, and adds the investment that electromechanical appliance assisted by locomotive, adds the cost of locomotive equipment.
In sum, Arno converter power supply mode also exist noise greatly, not energy-conservation, three-phase alternating current output voltage overbalance and with shortcomings such as input voltage changes.
The object of transformation auxiliary power supply system is to use domestic and international advanced Semiconductor Converting Technology, stops in the auxiliary power supply system of Kinds of Domestic Electric Locomotives and transform, and use AuCT substitutes Arno converter for SS4B type electric locomotive auxiliary circuit and powers.And realizing, on the basis powered to ancillary system high quality, original structure of locomotive not being transformed into greatly to the situation of " pulling one hair and move the whole body ", producing unnecessary loss.
The phase control rectifier that 8K locomotive adopts is in conjunction with in GTO inverting, and inversion link is unstable, and does not form the effective management to load in rear class, causes the redundancy fault-tolerant degree of inversion link lower, easy et out of order.
The IGBT impulse commutation that Harmony CRH2 EMUs adopt adds power frequency inverter scheme, and prime adopts PWM rectifier to improve rectification effect and power factor is high.But PWM rectifier is boost rectifying circuit, in order to meet the requirement of rear class inversion, must transform the auxiliary winding of SS4B main transformer, the output voltage reducing auxiliary winding can meet actual requirement, and the cost of transformation main transformer is higher.
The high-voltage rectifying that HXD2 type motor-car adopts adds power frequency inversion scheme in conjunction with buck chopper, implements more difficult.First the auxiliary winding of SS3 type electric locomotive is without any value of service, and will increase high-voltage rectifying device at the input end of main transformer, makes locomotive environment become complicated, loses more than gain.
In the power supply plan that HXD1, HXD3, CH3 adopt, roughly similar to HXD2 auxiliary power supply mode, high-voltage rectifying is difficult to realize on SS3 locomotive, can increase the complexity of locomotive auxiliary power supply link; And introduce Industrial Frequency Transformer, bulky.
Summary of the invention
The object of the present invention is to provide a kind of SS3 type electric locomotive auxiliary converter system, be intended to solve the deficiency in above-mentioned background technology.
The present invention realizes like this, a kind of SS3 type electric locomotive auxiliary converter system, comprise the helper motor be located in electric locomotive, also comprise the first AuCT and the second AuCT replaced by two Arno converters in the electric locomotive of SS3 type, described AuCT comprises prime current transformer and the rear class current transformer of series connection, prime current transformer is single-phase control rectifier, and rear class current transformer is made up of some shunt chopper unit; Described helper motor is carried out division and combination load according to classification and operating mode, different inverters being distributed in described load, between described inverter and each load, being provided with the reprinting circuit for switching reprinting.
Preferably, described helper motor comprises traction ventilator motor, braking blower motor, compressor electric motor, transformer blower fan and air-conditioner set;
The rear class current transformer of every platform AuCT comprises U1, U2, U3 and U1B tetra-inverters, and inverter U1B is the redundancy backup unit of inverter U1, inverter U2, inverter U3;
Inverter U1, inverter U2 in first AuCT and the second AuCT, inverter U3 load are identical, inverter U1 load 2 traction ventilator motors, inverter U2 load 2 braking blower motors, inverter U3 load 1 compressor motor; Inverter U1B load transformer blower fan in first AuCT and 1 air-conditioner set, inverter U1B load 1 the transformer oil pump motor in the second AuCT and 1 air-conditioner set; Wherein,
When any fault of converter of inverter U1, inverter U2, inverter U3, the load of non-faulty inverter and its driving disconnects, and switches on inverter U1B by described reprinting circuit by its load, by all loads of U1B Driven by inverter; When inverter U1B fault, the load of non-faulty inverter and its driving disconnects, and its load is switched on inverter U1 or inverter U2 by described reprinting circuit.
Preferably, described reprinting circuit is conversion contactor.
Preferably, described traction ventilator power of motor is 37kW, and braking blower power of motor is 30kW, and compressor electric motor power is 37kW, and transformer blower fan power is 14kW, and transformer oil pump power of motor is 10kW, and air-conditioner set power is 3kW;
Two described AuCT power are substantially identical, and described single-phase control rectifier capacity is 400kVA, and inverter capacity described in every platform is 100kVA.
Preferably, described single-phase control rectifier comprises the phase control rectifier circuit for being assisted by main transformer the output of winding to carry out phase control rectifier, smoothing reactor L, and bus Support Capacitor Cd; Wherein, after described main transformer assists the output of winding to carry out phase control rectifier, the filter action through smoothing reactor L and bus Support Capacitor Cd forms bus voltage Ud.
Preferably, described rear class current transformer adopts classical three-phase inverter bridge circuit.
Preferably, described main transformer assists the output of winding to be increased to AC794V by rated voltage, and the voltage stabilizing of intermediate link vdc is to DC540V.
Preferably, the described AuCT SPWM ripple also comprised for being exported by inverter filters into the sine wave filter of sinusoidal waveform; Wherein, sine wave filter is located between described inverter and helper motor.
Preferably, this SS3 type electric locomotive auxiliary converter system also comprises control system, and described control system comprises:
Department's control platform control unit, for the collection of locomotive control command signal and the display of subsidiary engine state, is installed on the driver Consoles bottom of electric locomotive;
Auxiliary converter control unit, for completing operation control, the emergency protection and parameter acquisition etc. of rectifier and inverter, is placed in the current transformer rack of electric locomotive;
And subsidiary engine logic control element, for receiving department's control platform control unit operating instruction to command the operation of Auxiliary converter control unit; Send the running state of AuCT and helper motor to department control platform display simultaneously; Wherein,
Connected by industrial field bus successively between described department control platform control unit, subsidiary engine logic control element and Auxiliary converter control unit.
The present invention overcomes the deficiencies in the prior art, a kind of SS3 type electric locomotive auxiliary converter system is provided, in the main circuit scheme of AuCT, adopt the circuit structure of " whole four inverse ", according to the load of subsidiary engine operating mode reasonable distribution, when having taken into account redundancy backup, fault, load switches and the many-side such as transfer, and new meaning is obvious." one is whole " adopts phase control rectifier scheme, the simplest to the reforming technology of main transformer, is highly suitable for transformation on existing locomotive and implements; Also the overall technological scheme being its main circuit version with friendship-straight locomotive phase control rectifier matches.The redundancy backup that " how inverse " is inverter, during fault, auxiliary load switching, transfer provide possibility, ensure that auxiliary system reliability of operation.According to subsidiary engine operating condition, to each inverter distribution load, ensure that the high efficiency that subsidiary engine runs and reliability.
The combination of list/rectified three-phase circuit accomplished by the rectifier of AuCT, and such locomotive can carry out comprehensive testing experiment to subsidiary engine performance when storehouse seizure test, the difficulty in inspection subsidiary engine loop, the Engine on National Locomotive of overcoming over comprehensive storehouse.
In the whole add-assembly process of AuCT, adhered to only replacing Arno converter, the Other related equipment of locomotive does not change or micromodification as far as possible, should incorporate the advance of technology, have compatibility again with existing locomotive.Such locomotive equipment add-assembly thinking, as do not done any replacing and transformation to the existing helper motor of locomotive, sine wave filter has been set up at the mouth of AuCT inverter, accomplish mating completely of the existing subsidiary engine of AuCT and locomotive, reduce improvement cost, also embody the advance that AuCT is powered.
Compared with the AuCT scheme of other existing techniques in realizing, although the AuCT design plan of existing advanced person has technical advance, performance is also comparatively perfect, but improvement cost is higher, realize difficulty comparatively large, the original intention substituting Arno converter for SS3 type use for electric locomotive AuCT obviously loses more than gain.Therefore advantage of the present invention is the actual locomotive environment in conjunction with the electric locomotive of SS3 type, adheres to realizing good auxiliary power supply effect with minimum change cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of original Arno converter feed circuit of domestic SS3 type electric locomotive in prior art; Wherein, FD1 is traction ventilator 1, FD3 traction ventilator 3, ZFD1 be braking blower 1, ZFD3 be braking blower 3, BBD is transformer blower fan, and BFD is transformer oil pump, and 1YD is compressor 1;
Fig. 2 is the structural representation of SS3 type electric locomotive auxiliary converter system one embodiment of the present invention; Wherein, 1FD is ventilating set 1,3FD be ventilating set 3,1ZFD be braking blower 1,2ZFD be braking blower 3, BBD is transformer blower fan, and BFD is transformer oil pump, and 1YD is compressor 1;
Fig. 3 is SS3 auxiliary converter of electric locomotive rectification link theory of constitution figure in the embodiment of the present invention;
Fig. 4 is SS3 auxiliary converter of electric locomotive rear class inversion link theory of constitution figure in the embodiment of the present invention;
Fig. 5 is that in the embodiment of the present invention, voltage transformer assists winding to reequip front winding schematic diagram;
Fig. 6 is winding schematic diagram after voltage transformer assists winding to reequip in the embodiment of the present invention;
Fig. 7 is the theory of constitution figure of control system in SS3 type electric locomotive auxiliary converter system of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
A kind of SS3 type electric locomotive auxiliary converter system, as shown in Figure 2, comprise the helper motor be located in electric locomotive, also comprise the first AuCT and the second AuCT replaced by two Arno converters in the electric locomotive of SS3 type, described AuCT comprises prime current transformer and the rear class current transformer of series connection, prime current transformer is single-phase control rectifier, and rear class current transformer is made up of some shunt chopper unit; Described helper motor is carried out division and combination load according to classification and operating mode, different inverters being distributed in described load, between described inverter and each load, being provided with the reprinting circuit (omitting view in figure) for switching reprinting.
In embodiments of the present invention, more specifically, described helper motor comprises traction ventilator motor, braking blower motor, compressor electric motor, transformer blower fan and air-conditioner set; The rear class current transformer of every platform AuCT comprises U1, U2, U3 and U1B tetra-inverters, and inverter U1B is the redundancy backup unit of inverter U1, inverter U2, inverter U3;
Inverter U1, inverter U2 in first AuCT and the second AuCT, inverter U3 load are identical, inverter U1 load 2 traction ventilator motors, inverter U2 load 2 braking blower motors, inverter U3 load 1 compressor motor; Inverter U1B load transformer blower fan in first AuCT and 1 air-conditioner set, inverter U1B load 1 the transformer oil pump motor in the second AuCT and 1 air-conditioner set; Wherein, the inverter U1B in first, second AuCT can realize redundancy backup to other three inverter U1, inverter U2, inverter U3.By each contactless contactor that the automatic control inverter of controller is connected with load, and each contactless contactor be connected to each other between each inverter, just can realize automatic transfer and the redundancy backup thereof of inverter load.
In embodiments of the present invention, more specifically, described prime current transformer adopts single-phase phase controlled rectifier, and binistor is thyristor, and circuit structure is single-phase semi-controlling bridge, and circuit theory as shown in Figure 3.Phase control rectifier circuit belongs to step-down rectifying circuit, and after being assisted by main transformer the output of winding (former auxiliary winding exports as AC397V) to carry out phase control rectifier, the filter action through smoothing reactor L and bus Support Capacitor Cd forms bus voltage Ud.The rectifier diode brachium pontis that in Fig. 3, dotted line connects is auxiliary system when doing storehouse seizure test, uses when passing into three-phase electricity.
In embodiments of the present invention, more specifically, described rear class current transformer adopts classical three-phase inverter bridge circuit, as shown in Figure 4.
In embodiments of the present invention, more specifically, assist winding transformation to locomotive main transformer, make AuCT input rated voltage be increased to AC794V, the voltage stabilizing of intermediate link vdc is to DC540V.Consider that the fluctuation range of net pressure is :+24% ~-30%, like this in minimum net pressure, also can provide suitable power supply voltage to helper motor, the intermediate link vdc selecting DC540V is suitable.
In actual application of the present invention, two AuCTs are positioned over the position that locomotive two saves (i.e. I, II end) former Arno converter respectively.Every platform AuCT (rack) drives 7 helper motors (containing 1 air-conditioner set), two AuCTs drive 14 helper motors (containing 2 air-conditioner set) altogether, and the power of motor that every platform AuCT drives is substantially identical.These 14 helper motors are respectively: traction ventilator 4 (separate unit power 37kW), braking blower 4 (separate unit power 30kW), 2, compressor (separate unit power 37kW), transformer blower fan 1 (power 14kW), Oil pump electrical machinery 1 (power 10kW), air-conditioner set 2 (separate unit power 3kW).Every platform AuCT is made up of prime current transformer (net side converter) and rear class current transformer, prime current transformer is a phase controlled rectifier (capacity 400kVA), and rear class current transformer is made up of inverter (capacity 100kVA × 4) unit that four capacity are equivalent.Substantially be divide with combination load according to the classification of helper motor and operating mode, and these loads are assigned in different inverter units.
AuCT load distribution condition is: in figure, inverter U1 drives 2 traction ventilator motors, and power is 37kW × 2; Inverter U2 drives 2 braking blower motors, and power is 30kW × 2=60kW; Inverter U3 drives 1 compressor motor, and power is 37kW; Inverter U1B drives 1 transformer blower fan, adds 1 air-conditioner set, and power is 14kW+3kW=17kW.Be that inverter U1B drives 1 transformer oil pump motor in the situation of the locomotive other end, add 1 air-conditioner set, power is 10kW+3kW=13kW; Other inverter unit drives the situation of load, and two ends are identical.Wherein inverter U1B is the redundancy backup unit of other other three inverters (as U1, U2, U3), when any one et out of order during these three can not run, excision non-faulty inverter, inverter U1B is except getting rid of air-conditioner set load, other helper motor load to be driven, realize the redundancy backup between inverter, to improve the reliability of system cloud gray model.Due to inverter U1B flat time the load that drives less, so the allowance of this inverter capacity is comparatively large, generate heat less, reliability of operation is naturally higher, so bear the redundancy backup of other three inversion units in a rack by it; But when inverter U1B faults itself, except getting rid of air-conditioner set load, its load is transferred to inverter U1 or inverter U2, and the compressor load driven due to inverter U3 is interval work system (beating wind at random), above not to shift so the load of trouble unit is general toward it.
In embodiments of the present invention, according to the classification of helper motor and operating mode to inverter distribution load, four inverter units drive the helper motor load of different operating mode respectively, each helper motor is made to achieve variable frequency soft start like this, avoid the unexpected input of helper motor to the heavy current impact of helper motor, " the prominent throwing " of helper motor is also very large to the impact of inverter in addition, also affects the service life of inverter.Therefore according to the classification of helper motor and operating mode to inverter distribution load, " prominent throw " of helper motor can be avoided to run.
In further implementation process, due to the auxiliary winding (a6 that SS3 electric locomotive main transformer was powered to Arno converter originally, x6) voltage is AC397V, and the voltage of the auxiliary winding that the present invention proposes doubles, for AC794V, in order to conveniently transform former Arno converter voltage and reduce as required, in embodiments of the present invention, the original 6 flat type copper wire (wire gauges: ZB-0.45 of winding will be assisted, 3.28 × 13.5/3.73 × 13.95) two " two cake windings " of coiling in parallel, be connected in series by being connected in parallel to change into.Such output voltage just can double, and current-carrying capacity drop by half, but the horsepower output of winding (carrying load ability) is with originally identical, not change.And uncomplicated to the transformation of voltage transformer like this, work capacity is less, is convenient to very much implement in locomotive works.Voltage transformer assists winding to reequip front and back winding schematic diagram as shown in Figure 5 and Figure 6.From Fig. 5 and Fig. 6, this transformation is fairly simple, only need by two and winding changes serial connection into.Output voltage doubles, and outgoing current reduces half.Overall horsepower output is almost constant, and winding is without the need to brand-new.After transformation, be reduced to Arno converter if want and power, without the need to again transforming voltage transformer, only need change the connection mode of external cabling post, the exchange of Arno converter and AuCT can be realized.
In further implementation process, consider that overhaul cost can not be replaced with all helper motors comprehensively " frequency control motor (having higher stator winding turn-to-turn insulation) ", the SPWM voltage waveform that such inverter exports just directly can not supply helper motor, and (it can cause the destruction of helper motor winding insulation, reduce the operation life of helper motor), in embodiments of the present invention, as shown in Figure 2, add between inverter and helper motor " sine wave filter ", object is filtered into " sinusoidal waveform " by the SPWM ripple that inverter exports.
In further implementation process, in order to make system total digitalization and control based on network, in embodiments of the present invention, described SS3 type electric locomotive auxiliary converter system also comprises control system, and as shown in Figure 7, described control system comprises:
Department's control platform control unit, for the collection of locomotive control command signal and the display of subsidiary engine state, is installed on the driver Consoles bottom of electric locomotive;
Auxiliary converter control unit, for completing operation control, the emergency protection and parameter acquisition etc. of rectifier and inverter, is placed in the current transformer rack of electric locomotive;
And subsidiary engine logic control element (AMLCU), for receiving department's control platform control unit operating instruction to command the operation of Auxiliary converter control unit; Send the running state of AuCT and helper motor to department control platform display simultaneously; Wherein,
Connected by industrial field bus successively between described department control platform control unit, subsidiary engine logic control element and Auxiliary converter control unit.
In the actual application of the embodiment of the present invention, carry out data communication by industrial field bus (CAN) between department's control platform control unit, subsidiary engine logic control element, AuCT (containing rectifier and inverter) control unit, realize data exchange.Department's control platform control unit completes the display of collection to locomotive control command signal and subsidiary engine state, and it is installed on driver Consoles bottom; Current transformer control unit completes operation control, the emergency protection and parameter acquisition etc. of rectifier and inverter, and it is placed in current transformer rack.
Under department's control platform, set up department's control platform control unit, the locomotive state read-out on department's control platform is transformed, sets up subsidiary engine state display part and divide, also show the state of each unit of AuCT.The subsidiary engine key instruction of control platform control unit collection department of department control platform, exchange data by CAN1 bus and subsidiary engine logic control element (AMLCU), it drives the running state of read-out display subsidiary engine.
In low pressure tank, set up subsidiary engine logic control element (AMLCU), AMLCU is controlled platform control unit by CAN1 bus with department and is exchanged data, exchanges data by CAN2 bus and current transformer control unit.AMLCU forms a connecting link, and reception department control platform subsidiary engine operating instruction, commands the operation of current transformer control unit; Send the running state of current transformer and subsidiary engine to department control platform display simultaneously.
Compared to the shortcoming and defect of prior art, the present invention has following beneficial effect:
(1) the present invention is in conjunction with the actual locomotive environment of SS3 type electric locomotive, adheres to realizing good auxiliary power supply effect with minimum change cost, and reforming technology is the simplest, is highly suitable for transformation on existing locomotive and implements.
(2) the present invention is according to subsidiary engine operating condition, and to each inverter distribution load, during fault, auxiliary load switching, transfer provide possibility, ensure that the high efficiency that subsidiary engine runs and reliability.
(3) rectifier of AuCT of the present invention is the combination of list/rectified three-phase circuit, and locomotive can carry out comprehensive testing experiment to subsidiary engine performance when storehouse seizure test, the difficulty in inspection subsidiary engine loop, the Engine on National Locomotive of overcoming over comprehensive storehouse.
(4) the present invention has set up sine wave filter at the mouth of AuCT inverter, has accomplished mating completely of the existing subsidiary engine of AuCT and locomotive, has reduced improvement cost, also embodies the advance that AuCT is powered.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a SS3 type electric locomotive auxiliary converter system, comprise the helper motor be located in electric locomotive, it is characterized in that, also comprise the first AuCT and the second AuCT replaced by two Arno converters in the electric locomotive of SS3 type, described AuCT comprises prime current transformer and the rear class current transformer of series connection, prime current transformer is single-phase control rectifier, and rear class current transformer is made up of some shunt chopper unit; Described helper motor is carried out division and combination load according to classification and operating mode, different inverters being distributed in described load, between described inverter and each load, being provided with the reprinting circuit for switching reprinting.
2. SS3 type electric locomotive auxiliary converter system as claimed in claim 1, described helper motor comprises traction ventilator motor, braking blower motor, compressor electric motor, transformer blower fan and air-conditioner set;
The rear class current transformer of every platform AuCT comprises inverter U1, inverter U2, inverter U3 and inverter U1B, and inverter U1B is the redundancy backup unit of inverter U1, inverter U2, inverter U3;
Inverter U1, inverter U2 in first AuCT and the second AuCT, inverter U3 load are identical, inverter U1 load 2 traction ventilator motors, inverter U2 load 2 braking blower motors, inverter U3 load 1 compressor motor; Inverter U1B load transformer blower fan in first AuCT and 1 air-conditioner set, inverter U1B load 1 the transformer oil pump motor in the second AuCT and 1 air-conditioner set; Wherein,
When any fault of converter of inverter U1, inverter U2, inverter U3, the load of non-faulty inverter and its driving disconnects, and switches on inverter U1B, drive all loads by inverter U1B by described reprinting circuit by its load; When inverter U1B fault, the load of non-faulty inverter and its driving disconnects, and its load is switched on inverter U1 or inverter U2 by described reprinting circuit.
3. SS3 type electric locomotive auxiliary converter system as claimed in claim 2, it is characterized in that, described reprinting circuit is conversion contactor.
4. SS3 type electric locomotive auxiliary converter system as claimed in claim 3, it is characterized in that, described traction ventilator power of motor is 37kW, braking blower power of motor is 30kW, compressor electric motor power is 37kW, transformer blower fan power is 14kW, and transformer oil pump power of motor is 10kW, and air-conditioner set power is 3kW;
Two described AuCT power are substantially identical, and described single-phase control rectifier capacity is 400kVA, and inverter capacity described in every platform is 100kVA.
5. SS3 type electric locomotive auxiliary converter system as claimed in claim 4, it is characterized in that, described single-phase control rectifier comprises the phase control rectifier circuit for being assisted by main transformer the output of winding to carry out phase control rectifier, smoothing reactor L, and bus Support Capacitor Cd; Wherein, after described main transformer assists the output of winding to carry out phase control rectifier, the filter action through smoothing reactor L and bus Support Capacitor Cd forms bus voltage Ud.
6. SS3 type electric locomotive auxiliary converter system as claimed in claim 5, it is characterized in that, described rear class current transformer adopts classical three-phase inverter bridge circuit.
7. SS3 type electric locomotive auxiliary converter system as claimed in claim 6, it is characterized in that, described main transformer assists the output of winding to be increased to AC794V by rated voltage, and the voltage stabilizing of intermediate link vdc is to DC540V.
8. SS3 type electric locomotive auxiliary converter system as claimed in claim 7, it is characterized in that, the described AuCT SPWM ripple also comprised for being exported by inverter filters into the sine wave filter of sinusoidal waveform; Wherein, sine wave filter is located between described inverter and helper motor.
9. SS3 type electric locomotive auxiliary converter system as claimed in claim 8, it is characterized in that, this SS3 type electric locomotive auxiliary converter system also comprises control system, and described control system comprises:
Department's control platform control unit, for the collection of locomotive control command signal and the display of subsidiary engine state, is installed on the driver Consoles bottom of electric locomotive;
Auxiliary converter control unit, for completing the operation control of rectifier and inverter, emergency protection and parameter acquisition, is placed in the current transformer rack of electric locomotive;
And subsidiary engine logic control element, for receiving department's control platform control unit operating instruction to command the operation of Auxiliary converter control unit; Send the running state of AuCT and helper motor to department control platform display simultaneously; Wherein,
Connected by industrial field bus successively between described department control platform control unit, subsidiary engine logic control element and Auxiliary converter control unit.
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| CN201420249473.0U CN204488519U (en) | 2014-05-16 | 2014-05-16 | A kind of SS3 type electric locomotive auxiliary converter system |
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| CN201420249473.0U CN204488519U (en) | 2014-05-16 | 2014-05-16 | A kind of SS3 type electric locomotive auxiliary converter system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978902A (en) * | 2014-05-16 | 2014-08-13 | 华北科技学院 | SS3 type electric locomotive assistant conversion system |
| CN109905017A (en) * | 2017-12-11 | 2019-06-18 | 中车永济电机有限公司 | Auxiliary converter circuit, AuCT and auxiliary converter cabinet |
| CN110116634A (en) * | 2018-02-05 | 2019-08-13 | 中车株洲电力机车研究所有限公司 | Train control method and device for ground automatic passing over of neutral section |
| CN111756305A (en) * | 2020-06-21 | 2020-10-09 | 中车永济电机有限公司 | Locomotive auxiliary converter topological structure |
-
2014
- 2014-05-16 CN CN201420249473.0U patent/CN204488519U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978902A (en) * | 2014-05-16 | 2014-08-13 | 华北科技学院 | SS3 type electric locomotive assistant conversion system |
| CN103978902B (en) * | 2014-05-16 | 2017-01-04 | 华北科技学院 | A kind of SS3 type electric locomotive auxiliary converter system |
| CN109905017A (en) * | 2017-12-11 | 2019-06-18 | 中车永济电机有限公司 | Auxiliary converter circuit, AuCT and auxiliary converter cabinet |
| CN110116634A (en) * | 2018-02-05 | 2019-08-13 | 中车株洲电力机车研究所有限公司 | Train control method and device for ground automatic passing over of neutral section |
| CN111756305A (en) * | 2020-06-21 | 2020-10-09 | 中车永济电机有限公司 | Locomotive auxiliary converter topological structure |
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