CN206698126U - A kind of hauling power device - Google Patents
A kind of hauling power device Download PDFInfo
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- CN206698126U CN206698126U CN201720547445.0U CN201720547445U CN206698126U CN 206698126 U CN206698126 U CN 206698126U CN 201720547445 U CN201720547445 U CN 201720547445U CN 206698126 U CN206698126 U CN 206698126U
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Abstract
The utility model provides a kind of hauling power device, including：Rectifier, traction invertor and auxiliary converter unit；Wherein, rectifier is used to the single-phase alternating current of Secondary Side of Traction Transformer winding being rectified into direct current；Traction invertor is used for DC inverter into the controllable alternating current of frequency amplitude with for traction electric machine；Auxiliary converter unit includes chopper, intermediate frequency isolation DC/DC current transformers, subordinate inverter and sinusoidal filter；Chopper connects rectifier, for carrying out pressure regulation to direct current；Intermediate frequency isolation DC/DC current transformers connection chopper, the DC voltage for being exported to chopper carry out medium frequency inverter, generate the square-wave voltage of intermediate frequency, and rectification is low-voltage DC after carrying out isolation transformation to the square-wave voltage of intermediate frequency；It is three-phase main-frequency alternating current that subordinate inverter, which is used for low-voltage DC inversion,；Sinusoidal filter connects subordinate inverter, for being filtered to three-phase main-frequency alternating current, generates the AC load of the three-phase alternating current supply train of sine.
Description
Technical field
Rail transportation vehicle-mounted equipment is the utility model is related to, more particularly to EMU, the traction of intercity EMUs move
Power apparatus.
Background technology
Traction power unit is the kernel component of EMU and intercity EMUs, and it provides power and car for train
Carry power supply.Fig. 1 is the structural representation of existing traction power unit.As shown in figure 1, the input of traction power unit is traction
The single-phase alternating current of the secondary side winding of transformer, direct current is converted to by rectifier, then passes through traction invertor inversion
Into three phase variable frequency transformation alternating current, traction electric machine is given, realizes traction and electric braking.Subordinate inverter is by DC inverter into three
Cross streams electricity, transformation and isolation are realized through Industrial Frequency Transformer, after the sinusoidal filter filtering formed through inductance, electric capacity, obtain work
Frequency three-phase alternating current is powered for all alternating current equipments of train.Charger generally also can be as one of traction power unit
Point, it converts direct current by DC/DC, into 110V direct currents, the control electricity output as train.
But in the realization of existing this traction power unit, the volume and weight of Industrial Frequency Transformer is considerable,
Also it is typically the maximum single component of AuCT.Also, power grade is higher, the volume weight of Industrial Frequency Transformer is bigger,
Machine Design, installation, gravity's center control to AuCT etc. all cause to challenge.Moreover, the AuCT that weight is big
It is unfavorable for the lightweight and energy-saving and emission-reduction of vehicle.In addition, in existing this power unit, the input voltage of charger generally compares
It is higher, such as may be 1800Vdc or 3600Vdc, therefore charger is a high-tension apparatus, if it directly does DC/DC changes
110Vdc is changed to, voltage has a long way to go, and the requirement to charger is higher.
It should be noted that the introduction to technical background above is intended merely to conveniently carry out clearly the technical solution of the utility model
Chu, complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Can not merely because these schemes in this practicality
New background section is set forth and thinks that above-mentioned technical proposal is known to those skilled in the art.
Utility model content
The utility model embodiment provides a kind of hauling power device, to solve existing traction power unit volume weight
The problem of larger, and cost difficulty is higher.
In order to achieve the above object, the utility model embodiment provides a kind of hauling power device, including：Rectifier, lead
Draw inverter and auxiliary converter unit；Wherein, the Secondary Side of Traction Transformer winding on the rectifier connection train, is used for
The single-phase alternating current of the Secondary Side of Traction Transformer winding is rectified into direct current；The traction invertor connects the rectification
Device, for by the DC inverter into the controllable alternating current of frequency amplitude with for traction electric machine；The auxiliary converter unit
Including chopper, intermediate frequency isolation DC/DC current transformers, subordinate inverter and sinusoidal filter；The chopper connection is described whole
Device is flowed, for carrying out pressure regulation to the direct current；The intermediate frequency isolation DC/DC current transformers connect the chopper, for institute
The DC voltage for stating chopper output carries out medium frequency inverter, generates the square-wave voltage of intermediate frequency, and to the square-wave voltage of the intermediate frequency
Rectification is low-voltage DC after carrying out isolation transformation；The subordinate inverter connects the intermediate frequency isolation DC/DC current transformers, is used for
It is three-phase main-frequency alternating current by the low-voltage DC inversion；The sinusoidal filter connects the subordinate inverter, for pair
The three-phase main-frequency alternating current is filtered, and generates the AC load of the three-phase alternating current supply train of sine.
Further, in one embodiment, the rectifier is one or more；When the rectifier is more, and
Connection is connected to the Secondary Side of Traction Transformer winding, and each rectifier correspondingly connect a set of Secondary Side of Traction Transformer around
Group.
Further, in one embodiment, the traction invertor is one, for controlling multiple electric motors.
Further, in one embodiment, the traction invertor is more, and each traction invertor is used to control one
Platform or multiple electric motors.
Further, in one embodiment, the chopper is boost chopper or buck chopper, quantity be one or
It is multiple；When the chopper is multiple, the multiple chopper is connected in series and uses Pressure and Control.
Further, in one embodiment, the intermediate frequency isolation DC/DC current transformers include if inverter, intermediate frequency transformation
Device and intermediate frequency rectifier；The if inverter is used to carry out medium frequency inverter to the DC voltage of chopper output, raw
Into the square-wave voltage of intermediate frequency；The intermediate-frequency transformer is used to carry out isolation transformation to the square-wave voltage of the intermediate frequency；The intermediate frequency
Rectifier is used to carry out rectification to the square-wave voltage after isolation transformation, generates the low-voltage DC.
In addition to charger further, in one embodiment,；The charger connects the intermediate frequency isolation DC/DC and become
Device is flowed, for the low-voltage DC to be carried out into DC/DC conversions, the control electricity as train.
Had the beneficial effect that caused by the traction power unit of the utility model embodiment：Integrated in traction power unit
Traction convertor and intermediate frequency AuCT, level of integrated system are very high；The working frequency of AuCT is improved, significantly
It is horizontal to improve lightweight；Input voltage wide variation is tackled using chopper so that when DC voltage is relatively low or higher, auxiliary
Converter part can be with normal work；Utilize the cascade of chopper so that chopper and intermediate frequency isolation DC/DC current transformers can be with
Using the device of low voltage grade, working frequency can be further enhanced；Chopper and intermediate frequency isolation DC/DC current transformers
Cooperate, direct current is depressured to a relatively low DC voltage so that subordinate inverter and charger all into
Low-voltage equipment, significantly reduce its design difficulty and cost；AuCT uses modular design, can be easily according to not
Cut with demand or dilatation.For example, higher voltage, intermediate frequency isolation DC/DC can be adapted to by the series connection of copped wave module
Dilatation is realized in the parallel connection of current transformer, and dilatation is realized in the parallel connection of subordinate inverter.
With reference to following explanation and accompanying drawing, particular implementation of the present utility model is disclose in detail, specifies this practicality
New principle can be in a manner of adopted.It should be understood that embodiment of the present utility model in scope not thus by
Limitation.In the range of the spirit and terms of appended claims, embodiment of the present utility model includes many changes, modifications
With it is equivalent.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in individual other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those skilled in the art, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of existing hauling power device；
Fig. 2 is a kind of structural representation of hauling power device of the utility model embodiment；
Fig. 3 is the structural representation of multiple choppers input series connection of the utility model embodiment；
Fig. 4 is that the intermediate frequency of the utility model embodiment isolates the structural representation of DC/DC current transformers；
Fig. 5 is the circuit structure diagram of the specific embodiment of the hauling power device of the utility model embodiment 1；
Fig. 6 is the circuit structure diagram of the specific embodiment of the hauling power device of the utility model embodiment 2.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Below with reference to some representative embodiments of the present utility model, principle and essence of the present utility model are explained in detail
God.
The utility model discloses a kind of traction power unit, realizes the Integrated design of traction convertor and AuCT,
Realize lightweight, miniaturization and the high purpose of integration degree.
Fig. 2 is a kind of structural representation of hauling power device of the utility model embodiment.As shown in Fig. 2 including：It is whole
Flow device, traction invertor and auxiliary converter unit；
Wherein, the Secondary Side of Traction Transformer winding on rectifier connection train, for by the tractive transformer
The single-phase alternating current of secondary side winding is rectified into direct current；
The traction invertor connects the rectifier, for by the DC inverter into the controllable exchange of frequency amplitude
Electricity is with for traction electric machine；
The auxiliary converter unit includes chopper, intermediate frequency isolation DC/DC current transformers, subordinate inverter and sinusoidal filtering
Device；
The chopper connects the rectifier, for carrying out pressure regulation to the direct current；
The intermediate frequency isolation DC/DC current transformers connect the chopper, for the DC voltage exported to the chopper
Medium frequency inverter is carried out, generates the square-wave voltage of intermediate frequency, and rectification is low after carrying out isolation transformation to the square-wave voltage of the intermediate frequency
Press direct current；
The subordinate inverter connects the intermediate frequency isolation DC/DC current transformers, for being by the low-voltage DC inversion
Three-phase main-frequency alternating current；
The sinusoidal filter connects the subordinate inverter, raw for being filtered to the three-phase main-frequency alternating current
Into the AC load of the three-phase alternating current supply train of sine.
In the present embodiment, the single-phase alternating current of Secondary Side of Traction Transformer winding is rectified into direct current by rectifier.It is whole
Stream device can be one or more parallel connections, a set of Secondary Side of Traction Transformer winding of every correspondence.It can collect in rectifier
Into copped wave bridge arm, braking copped wave or over-voltage protecting function are realized.
In the present embodiment, DC inverter is used for drawing electricity by traction invertor into the controllable alternating current of frequency amplitude
Machine.Can be that 4 motors of an inverter control or two inverters control 2 motors or four respectively
Inverter, a motor is controlled respectively.
In the present embodiment, auxiliary converter unit can be largely classified into four parts, chopper, and intermediate frequency isolated converters are auxiliary
Help inverter, sinusoidal filter.
The intermediate loop nominal DC busbar voltage of power unit is usually 1800V, 3000V, 3300V or 3600V etc., is made
For traction invertor and the input direct voltage of AuCT.More complicated yet with operating condition, middle dc voltage is simultaneously
Rated voltage is not always operating at, for example, when rectifier is in uncontrollable rectifier, DC voltage is female by substantially less than nominal DC
Line voltage, such as half rated voltage；And middle dc voltage will be normally higher than rated voltage in damped condition.
Direct current input is connected to chopper and carries out pressure regulation, and output DC voltage is defeated as intermediate frequency isolation DC/DC current transformers
Enter.In DC voltage wide variation, chopper also ensures that AuCT part normal work.The utility model
In, chopper can be boost chopper, or buck chopper；Single chopper can be used, can also be used more
Level chopper input series connection.As shown in figure 3, when using the series connection of multiple choppers, using Pressure and Control, it is ensured that each unit leads to
The power crossed is impartial.
In the present embodiment, intermediate frequency isolation DC/DC current transformers working frequency can in the range of 5kHz~100kHz, according to
The ability of critical piece, generally may be configured as in the range of 18kHz~25kHz, for power frequency 50Hz or 60Hz, be referred to as
Intermediate frequency.Intermediate frequency isolated converters carry out the single-phase inversion of intermediate frequency first, are medium frequency alternating current by DC voltage inversion.By intermediate frequency
After transformer pressure-reducing, then rectification, filtering obtain low-voltage DC 600Vdc~700Vdc, can also be fixed on 650Vdc.In
Frequency isolation DC/DC current transformers use LLC harmonic technologies, while realize the soft of the semiconductor devices of inverter and rectifier therein
Switch.
As shown in figure 4, the intermediate frequency isolation DC/DC current transformers are whole including if inverter, intermediate-frequency transformer and intermediate frequency
Flow device；The if inverter is used to carry out medium frequency inverter to the DC voltage of chopper output, generates the square wave of intermediate frequency
Voltage, the intermediate-frequency transformer are used to carry out the square-wave voltage of the intermediate frequency isolation transformation, and the intermediate frequency rectifier is used for pair
The square-wave voltage isolated after transformation carries out rectification, generates the low-voltage DC.
In the present embodiment, the input direct voltage 650Vdc of subordinate inverter, three-phase is reverse into by subordinate inverter
The square-wave voltage of PWM.Because voltage class is low, so the switching frequency of inverter can improve significantly to several kHz to ten
Several kHz.By contrast, the input voltage of subordinate inverter leads in 1800Vdc or 3600Vdc, switching frequency in traditional scheme
Often in hundreds of Hz to 1.5kHz.
In the present embodiment, sinusoidal filter uses inductance, electric capacity, sinusoidal filter is formed, by the three-phase PWM side of input
After wave voltage filtering, the three-phase alternating current of sine is obtained.Sinusoidal filter can be the wave filter or LCL of LC structures
The wave filter of structure.Because the working frequency of subordinate inverter significantly improves, the demand of sinusoidal filter is significantly reduced.Therefore
The inductance and electric capacity needed is much smaller than conventional art.
In another embodiment, hauling power device also includes charger, and it, which is inputted, is connected to intermediate frequency isolation DC/DC changes
In the output for flowing device.Because the input of charger is low-voltage DC, therefore greatly reduces the design difficulty to charger,
The compactness of charger can significantly be improved.
Fig. 5 and Fig. 6 is the circuit structure diagram of two specific embodiments of the utility model hauling power device.Specific implementation
Mode is as follows：
Two sets of completely the same rectifiers 1.7 and 2.7 and two sets complete one are included in the traction power unit of the present embodiment
The inverter 1.12 and 2.12 of cause, its dc bus all links together.AuCT unit includes two sets of Hes of chopper 8
9, wherein embodiment illustrated in fig. 5 uses boost chopper, and embodiment illustrated in fig. 6 uses buck chopper, and two sets of intermediate frequencies isolate DC/
DC current transformers 12 and 13, a set of subordinate inverter 5, a set of sinusoidal filter 6, a set of charger 17.
1st, tractive transformer has two sets of secondary side windings, passes through the input interface 1.1 of cable connection to power unit respectively
With 2.1, then respectively by switch and pre-charge circuit 1.2 and 2.2, it is connected to rectifier 1.7 and exchanges input with 2.7.
Switch and pre-charge circuit 1.2 are made up of main switch 1.3, precharge switch 1.4 and pre-charge resistor 1.5.In advance
The process of charging is that rectifier 1.7 does not start, and precharge switch 1.4 closes first, and the input voltage of traction convertor passes through pre-
Charging resistor 1.5, the DC support electric capacity 1.6 of traction convertor is charged.After the completion of precharge, main contactor 1.3
Closure, pre-charge process terminate.
The composition and function of switch and pre-charge circuit 2.2 are completely the same with 1.2.
2nd, rectifier 1.7 is composed in parallel by two parts, and single-phase rectification bridge 1.8 and a braking copped wave module 1.9 are formed.It is single
Commutating phase bridge includes four switching tubes.Braking copped wave module includes two switching tubes and a braking resistor 1.10.
Four switching tube cooperatings of single-phase rectification bridge, single phase ac is inputted and carries out rectification, obtaining a stabilization can
The DC voltage of control is as output.
The function of braking copped wave module is to carry out active discharge to DC voltage.
Rectifier 2.7 and 1.7 structure functions are completely the same.Two rectifiers can cooperate, and pass through phase-shifting carrier wave skill
Art reduces the current harmonics of tractive transformer primary side.
3rd, the direct current output of rectifier 1.7 and 2.7 is all connected on DC support electric capacity 1.6, as the straight of power unit
Flow bus.The effect of DC support electric capacity 1.6 is energy storage, filtering.
4th, the direct current input of traction invertor 1.12 and 2.12 is all connected on DC support electric capacity 1.6.It is carried out respectively
Inversion exports, and the motor as unit exports 1.13 and 2.13.Each traction invertor drives two motors in parallel, realizes
" frame control ".
5th, dc bus is connected to the input of AuCT unit by DC output terminal 1.11.
6th, the boost chopper unit 8 and 9 of embodiment illustrated in fig. 5 is two identical circuit units, and it can only be adopted
With a bridge arm, more bridge arms can also be used in parallel, to improve capacity or improve equivalent switching frequency.
The bridge arm midpoint of the boost chopper unit 8 of embodiment illustrated in fig. 5, dc bus is connected to by direct current reactance 7
On 1.11 positive pole.The bridge arm negative busbar of boost chopper unit 8, is connected on the bridge arm midpoint of boost chopper unit 9.Boosting is cut
The negative busbar of ripple unit 9 is connected to the negative pole of dc bus 1.11.It is achieved thereby that the input series connection of boost chopper unit 8 and 9
Structure.
The switching tube of the boost chopper unit 8 and 9 of embodiment illustrated in fig. 5 can be realized higher etc. by interleaving technique
Switching frequency is imitated, so as to reduce the current harmonics in direct current reactance 7, so as to reduce its volume weight.
The boost chopper unit 8 and 9 of embodiment illustrated in fig. 5 realizes the pressure of its output voltage by Collaborative Control.
7th, the buck chopper unit 8 and 9 of embodiment illustrated in fig. 6 is two identical circuit units, and it can only be adopted
With a bridge arm, more bridge arms can also be used in parallel, to improve capacity or equivalent switching frequency.
The voltage of the input port 1.11 of embodiment illustrated in fig. 6 is by two identical electric capacity series average-voltages, buck chopper list
Member 8 and 9 realizes the input cascaded structure of buck chopper unit respectively using two capacitance voltages as input.
The bridge arm midpoint of the buck chopper unit 8 and 9 of embodiment illustrated in fig. 6 is connected by direct current reactance 7.1 and 7.2 respectively
Onto DC capacitor 10 and 11.
The buck chopper unit 8 and 9 of embodiment illustrated in fig. 6 realizes the pressure of output voltage by Collaborative Control.
8th, the direct current output of copped wave unit 8 is connected on DC capacitor 10, is then attached to intermediate frequency isolation DC/DC current transformers
In 12 direct current input.
The direct current output of copped wave unit 9 is connected on DC capacitor 11, is then attached to intermediate frequency isolation DC/DC current transformers 13
Direct current input on.
9th, intermediate frequency is isolated in DC/DC current transformers 12, the direct current that inverter 12.1 inputs direct current, is reverse into intermediate frequency square wave
Voltage.The primary side for being applied to resonant capacitor 12.2 and intermediate-frequency transformer 12.3 is connected on the branch road to be formed.Intermediate frequency rectifier
12.4 bridge arm midpoint, is connected on the vice-side winding of intermediate-frequency transformer 12.3, is direct current by the ac voltage rectifier of intermediate frequency
Pressure, the output as intermediate frequency isolation DC/DC current transformers 12.
The primary side leakage inductance and magnetizing inductance of intermediate-frequency transformer 12.3, and resonant capacitor 12.2, pass through inverter 12.1
The cooperation of switching frequency and two resonant frequencies so that transformer primary side inverter circuit is operated in Zero-voltage soft switch state, whole
Stream diode bridge 12.4 is operated in zero-current soft switch state, and system effectiveness is improved while voltage conversion is completed.
The operation principle of intermediate frequency isolation DC/DC current transformers 13 is identical with 12.
10th, the output bus of intermediate frequency isolation DC/DC current transformers 12 and 13 is in parallel, is then attached to low-voltage direct Support Capacitor
On 14.
11st, low-voltage direct Support Capacitor 14 constitutes the low-voltage direct bus of intermediate frequency AuCT, is connected to auxiliary
On inverter 5.DC voltage inversion is turned into three-phase main-frequency alternating current by subordinate inverter 5, is then attached to sinusoidal filter 6.
Sinusoidal filter 6 is made up of AC reactor 6.1 and ac filter capacitor 6.2.Filter condenser is connected to output contactor 7
On, the output 15 of power unit is then attached to, 380V/50Hz three-phase alternating currents are provided for load.
12nd, low-voltage direct bus is also connected in the input of charger 17.Charger 17 converts input voltage into 110V
DC voltage, the output 18 of power unit is connected to, 110V direct currents are provided for load.
Had the beneficial effect that caused by the traction power unit of the utility model embodiment：
1st, traction convertor and intermediate frequency AuCT are integrated with traction power unit, level of integrated system is very high；
2nd, the working frequency of AuCT is improved, significantly improves lightweight level；
3rd, input voltage wide variation is tackled using chopper so that when DC voltage is relatively low or higher, auxiliary converter
Device part can be with normal work；
4th, the cascade of chopper is utilized so that chopper and intermediate frequency isolation DC/DC current transformers can use low voltage etc.
The device of level, working frequency can be further enhanced；
5th, chopper and intermediate frequency isolation DC/DC current transformers cooperate, and direct current is depressured to one compared with low dc voltage
Level, so that subordinate inverter and charger significantly reduce its design difficulty and cost all into low-voltage equipment；
6th, AuCT uses modular design, easily can be cut according to different demands or dilatation.Example
Such as, higher voltage can be adapted to by the series connection of copped wave module, the parallel connection of intermediate frequency isolation DC/DC current transformer is realized dilatation, aided in inverse
Dilatation is realized in the parallel connection for becoming device.
Various illustrative logical blocks described in the utility model embodiment, or unit can pass through general procedure
Device, digital signal processor, application specific integrated circuit (ASIC), field programmable gate array or other programmable logic devices, from
The design of door or transistor logic, discrete hardware components, or any of the above described combination is dissipated come the function described by realizing or operate.It is logical
Can be microprocessor with processor, alternatively, the general processor can also be any traditional processor, controller, micro-
Controller or state machine.Processor can also be realized by the combination of computing device, such as digital signal processor and Wei Chu
Device, multi-microprocessor are managed, one or more microprocessors combine a Digital Signal Processor Core, or any other like
Configure to realize.
Specific embodiment is applied in the utility model to be set forth principle of the present utility model and embodiment, with
The explanation of upper embodiment is only intended to help and understands method and its core concept of the present utility model；Meanwhile for this area
Those skilled in the art, according to thought of the present utility model, there will be changes, comprehensive in specific embodiments and applications
Upper described, this specification content should not be construed as to limitation of the present utility model.
Claims (7)
- A kind of 1. hauling power device, it is characterised in that including：Rectifier, traction invertor and auxiliary converter unit；Wherein, the Secondary Side of Traction Transformer winding on the rectifier connection train, for the tractive transformer is secondary The single-phase alternating current of side winding is rectified into direct current；The traction invertor connects the rectifier, for by the DC inverter into the controllable alternating current of frequency amplitude with For traction electric machine；The auxiliary converter unit includes chopper, intermediate frequency isolation DC/DC current transformers, subordinate inverter and sinusoidal filter；The chopper connects the rectifier, for carrying out pressure regulation to the direct current；The intermediate frequency isolation DC/DC current transformers connect the chopper, and the DC voltage for being exported to the chopper is carried out Medium frequency inverter, the square-wave voltage of intermediate frequency is generated, and rectification is low-pressure direct after carrying out isolation transformation to the square-wave voltage of the intermediate frequency Stream electricity；The subordinate inverter connects the intermediate frequency isolation DC/DC current transformers, for being three-phase by the low-voltage DC inversion Industrial-frequency alternating current；The sinusoidal filter connects the subordinate inverter, and for being filtered to the three-phase main-frequency alternating current, generation is just The AC load of the three-phase alternating current supply train of string.
- 2. hauling power device according to claim 1, it is characterised in that the rectifier is one or more；Work as institute State rectifier for more when, be connected in parallel in the Secondary Side of Traction Transformer winding, and the corresponding connection one of each rectifier Cover Secondary Side of Traction Transformer winding.
- 3. hauling power device according to claim 1, it is characterised in that the traction invertor is one, for controlling Multiple electric motors processed.
- 4. hauling power device according to claim 1, it is characterised in that the traction invertor is more, Mei Yitai Traction invertor is used to control one or more motor.
- 5. hauling power device according to claim 1, it is characterised in that the chopper is boost chopper or decompression Chopper, quantity are one or more；When the chopper is multiple, the multiple chopper is connected in series and uses Pressure and Control.
- 6. hauling power device according to claim 1, it is characterised in that the intermediate frequency isolation DC/DC current transformers include If inverter, intermediate-frequency transformer and intermediate frequency rectifier；The if inverter is used to carry out medium frequency inverter to the DC voltage of chopper output, generates the square wave electricity of intermediate frequency Pressure；The intermediate-frequency transformer is used to carry out isolation transformation to the square-wave voltage of the intermediate frequency；The intermediate frequency rectifier is used to carry out rectification to the square-wave voltage after isolation transformation, generates the low-voltage DC.
- 7. according to the hauling power device described in claim any one of 1-6, it is characterised in that also including charger；The charger connects the intermediate frequency isolation DC/DC current transformers, for the low-voltage DC to be carried out into DC/DC conversions, Control electricity as train.
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| CN107070255A (en) * | 2017-05-17 | 2017-08-18 | 中国铁道科学研究院 | A kind of hauling power device |
| CN108819800A (en) * | 2018-06-26 | 2018-11-16 | 贾晶艳 | The processing method and processing device of the net side converter plant of multithread electric locomotive |
| CN109873571A (en) * | 2017-12-04 | 2019-06-11 | 邹晓灵 | A kind of general inverter and its control method |
| CN110808686A (en) * | 2019-10-31 | 2020-02-18 | 北京建筑大学 | Auxiliary converter, single-phase rectifier and control method of single-phase rectifier |
| CN111756269A (en) * | 2020-07-05 | 2020-10-09 | 中车永济电机有限公司 | Passenger train DC power supply device |
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