CN103192726B - Alternating-current transmission diesel locomotive power supply system - Google Patents

Alternating-current transmission diesel locomotive power supply system Download PDF

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Publication number
CN103192726B
CN103192726B CN201310152904.1A CN201310152904A CN103192726B CN 103192726 B CN103192726 B CN 103192726B CN 201310152904 A CN201310152904 A CN 201310152904A CN 103192726 B CN103192726 B CN 103192726B
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described
module
traction
power supply
inversion
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CN201310152904.1A
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CN103192726A (en
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何良
饶沛南
张义
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株洲南车时代电气股份有限公司
中国铁路总公司
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Abstract

The embodiment of the invention discloses an alternating-current transmission diesel locomotive power supply system. The system comprises a main generator, a first traction power supply unit, a second traction power supply unit, a first traction generator system module, a second traction generator system module, a first isolation transformer, a first alternating/direct current converter, an auxiliary inversion unit, a selective switch, an auxiliary motor module, a charger module and an excitation control module. The system supplies power through an intermediate loop, an auxiliary diesel generating set is omitted, locomotive space is saved, and the weight is reduced; and the auxiliary motor adopts the same frequency, which is convenient for platform design. Thus, alternating-current transmission diesel locomotive power supply system provided by the invention is high in integration level, light in weight and convenient to maintain, so as to enhance the practical applicability of an alternating-current transmission diesel locomotive.

Description

A kind of AC drive diesel locomotive electric power system

Technical field

The present invention relates to railway locomotive field, particularly relate to a kind of AC drive diesel locomotive electric power system.

Background technology

Diesel locomotive type of drive has three kinds: mechanical drive, hydraulic transmission and electric transmission.Wherein, mechanical drive is generally used on low power local railway and industry control locomotive; Hydraulic transmission comprises two kinds of modes: mechanical commutation hydraulic transmission and hydraulic changeover hydraulic transmission; Electric transmission comprises three kinds of modes: DC drive, alternating current-direct current transmission, the transmission of friendship orthogonal, wherein, hand over orthogonal transmission referred to as AC Drive, due to AC drive locomotive there is simple structure, reliability is high, efficiency is high, use that alerting ability is strong, power and deceleration and stopping performance advantages of higher, passenger traffic need raise speed, shipping need raise speed, shipping need improve load carrying ability current demand under, High-power AC drives diesel locomotive become China railways traction freight train main type.

Due to the starting of AC system major decision locomotive, braking and the performance such as high operating rate, therefore, AC system is the core component of High-power AC drives diesel locomotive, and at present, the development concentrated reflection of locomotive technology is in AC system.The developing goal of AC system is: small-sized, light weight, energy-saving and environmental protection, reliable, economic dispatch.The Alternating Current Power Supply scheme that existing AC Drive combustion engine adopts generally adopts diesel powerplant, unreliable rectifier, inverter module, this diesel locomotive adopts the mode of Separation of main work and non-main work to power in the entire system, due to the restriction of diesel locomotive inner space, the mode of Separation of main work and non-main work can cause the system integration more complicated, add drain on manpower and material resources that parts install and safeguard, also can deposit commonality problem between the parts simultaneously.Existing combustion engine AC system cannot meet compact conformation, lightweight requirement.

Based on above-mentioned technical matters, in the urgent need to provide a kind of novel AC drive diesel locomotive electric power system be locomotive make the integrated level of locomotive high, lightweight, be convenient to safeguard, to strengthen the practicality of AC drive diesel locomotive.

Summary of the invention

In order to solve the problems of the technologies described above, provide in the embodiment of the present application a kind of novel AC drive diesel locomotive electric power system be locomotive make the integrated level of locomotive high, lightweight, be convenient to safeguard, to strengthen the practicality of AC drive diesel locomotive.

The embodiment of the invention discloses following technical scheme:

A kind of AC drive diesel locomotive electric power system, comprising:

Main generator, the first traction power supply unit, the second traction power supply unit, the first traction electric machine group module, the second traction electric machine group module, the first isolating transformer, the first AC-DC converter, auxiliary inversion unit, select switch, helper motor module, battery charger module, excitation con-trol module;

Described first traction power supply unit is identical with the structure of described second traction power supply unit; Described first traction power supply unit comprises: line contactor, rectification module, intermediate dc loop, three tractions inversion module, auxiliary inversion modules; Wherein, an auxiliary inversion unit and three draw inversion unit and share intermediate dc loop;

Described first traction power supply unit, exports to described first traction electric machine group module for the three plase alternating current being voltage and frequency-adjustable by the vdc inversion that described main generator exports under traction working condition according to inversion output command;

Described second traction power supply unit, exports to described second traction electric machine group module for the three plase alternating current being voltage and frequency-adjustable by the vdc inversion that described main generator exports under traction working condition according to inversion output command;

Vdc inversion is the three plase alternating current output isolation transformer of voltage and frequency-adjustable respectively by change-over swith by the auxiliary inversion module in the auxiliary inversion unit in described first traction power supply unit and described second traction power supply unit, and described first isolating transformer is used for that high pressure is converted to low pressure and exports to described first AC-DC converter;

Described AC/DC changeover switch is used for that alternating-current voltage/AC voltage is converted to direct current (DC) and exports to described auxiliary inversion unit;

Described auxiliary inversion unit, for the DC inverter of reception is alternating current and by described change-over switch be described helper motor module, described battery charger and described excitation con-trol unit power;

Described battery charger module is locomotive storage batteries charging for alternating current being converted to direct current (DC);

Described excitation con-trol module, for controlling the voltage in described intermediate dc loop according to the exciting current of main generator.

Preferably, described intermediate dc loop comprises:

Earthing detection unit, medium voltage detecting unit and filter capacitor;

Described earthing detection unit is made up of two resistant series, and described resistance is used for the release of filter capacitor remaining capacity;

Described medium voltage detecting unit, for detecting intermediate dc loop voltage, so that system held intermediate dc loop voltage is stable;

Described filter capacitor, for carrying out the energy storage in filtering process and intermediate dc loop to the high order harmonic of middle DC loop.

Preferably, described helper motor module comprises: air compressor motor, main blower motor, traction ventilator motor, cooling fan motor, dusting fan, pump motor, described motor all adopts identical frequency.

Preferably, described generator set can adopt simplex winding or duplex winding according to locomotive power hierarchical selection.

Preferably, also comprise: braking resistor unit, for consuming described first traction power supply unit or the braking energy of described second traction power supply unit under damped condition.

Preferably, under varying frequency starting operating mode, locomotive storage batteries charges to middle DC loop, any one traction inversion unit in described first traction power supply unit or described second traction power supply unit, for powering to electrical generator, excitation is carried out to electrical generator, to realize varying frequency starting by copped wave unit.

Preferably, under damped condition, described first traction electric machine group module and described second traction electric machine group module, convert direct current (DC) for the three-phase electricity exported by traction electric machine to by traction inversion unit, export to auxiliary inversion module or consume in braking resistor.

Preferably, also comprise: direct-current-alternating-current converter, for DC voltage conversion is become household electricity; Described direct-current-alternating-current converter and described battery charger module direct-coupling.

Preferably, described auxiliary inversion unit comprises three auxiliary inversion modules; Described select switch, for when in described three auxiliary inversion modules when any one or any two module et out of orders, disconnect the line breaker of corresponding malfunctioning module, carry out constant potential constant frequency power so that remaining two or module are described helper motor.

Preferably, the auxiliary inversion module in described first traction power supply unit, for being voltage and the frequency of change by the DC inverter that described intermediate dc loop inputs according to inversion control instruction, for described AC-DC converter is powered.

Preferably, the auxiliary inversion module in described second traction power supply unit, for being constant voltage and frequency according to inversion control instruction by the DC inverter that described intermediate dc loop inputs, for described AC-DC converter is powered.

Preferably, also comprise: train power supply module, the second isolating transformer and the second AC-DC converter, described train power supply module, the vdc inversion for being provided in described intermediate dc loop is that the three plase alternating current of voltage and frequency-adjustable exports to the second isolating transformer; Described second isolating transformer, for being converted to low pressure by high pressure and exporting to the second AC-DC converter; Described second AC-DC converter, exports to other consumers in locomotive for the interchange received being converted to direct current.

As can be seen from the above-described embodiment, a kind of AC drive diesel locomotive electric power system of the application, comprising: main generator, the first traction power supply unit, the second traction power supply unit, the first traction electric machine group module, the second traction electric machine group module, isolating transformer, AC/DC changeover switch, three subordinate inverter, select switch, cooling fan module, masters send out blower fan and current transformer ventilation module, traction electric machine ventilating set module, battery charger, excitation controller; Powered by intermediate loop, eliminate auxiliary diesel generater set, save locomotive space expendable weight, helper motor adopts same frequency, be convenient to hardware and software platform design, as seen the integrated level of this system high, lightweight, be convenient to safeguard, to strengthen the practicality of AC drive diesel locomotive.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the system construction drawing of a kind of AC drive diesel locomotive electric power system that the embodiment of the present application one discloses;

Fig. 2 is the circuit diagram of a kind of duplex winding AC drive diesel locomotive electric power system that the application discloses;

Fig. 3 is the circuit diagram of a kind of simplex winding AC drive diesel locomotive electric power system that the application discloses;

Fig. 4 is the system construction drawing of the another kind of AC drive diesel locomotive electric power system that the application discloses;

Fig. 5 is the circuit diagram of the another kind of AC drive diesel locomotive electric power system shown in Fig. 4;

Fig. 6 is the system circuit diagram of the another kind of AC drive diesel locomotive electric power system that the embodiment of the present application two discloses;

Fig. 7 is the system circuit diagram of the another kind of AC drive diesel locomotive electric power system that the embodiment of the present application three discloses;

Fig. 8 is the system circuit diagram of the another kind of AC drive diesel locomotive electric power system that the application discloses.

Detailed description of the invention

For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the embodiment of the present invention below in conjunction with accompanying drawing.

Embodiment one

Refer to Fig. 1, it is the system construction drawing of a kind of AC drive diesel locomotive electric power system that the embodiment of the present application one discloses, and this system comprises: main generator 1, first traction power supply unit 2A, the second traction power supply unit 2B, the first traction electric machine group module 3A, the second traction electric machine group module 3B, isolating transformer 4, AC/DC changeover switch 5, auxiliary inversion unit 6, select switch 7, helper motor module 8, battery charger module 9, excitation controller 10.Principle of work below in conjunction with this system introduces its inner structure and annexation further.

Described first traction power supply unit 2A is identical with the structure of described second traction power supply unit 2B; Described first traction power supply unit 2A comprises: line contactor A1, rectification module A2, intermediate dc loop A3, three traction inversion modules (traction inversion module 1 ~ 3), an auxiliary inversion module (auxiliary inversion module 1); Wherein, an auxiliary inversion module and three draw inversion module and share intermediate dc loop;

Described second traction power supply unit 2B comprises: line contactor B1, rectification module B2, intermediate dc loop B3, three traction inversion modules (traction inversion module 4 ~ 6), an auxiliary inversion module (auxiliary inversion module 2); Wherein, an auxiliary inversion module and three draw inversion module and share intermediate dc loop;

Described first traction power supply unit, exports to described first traction electric machine group module 3A for the three plase alternating current being voltage and frequency-adjustable by the vdc inversion that described main generator exports under traction working condition according to inversion output command;

Described second traction power supply unit, exports to described second traction electric machine group module 3B for the three plase alternating current being voltage and frequency-adjustable by the vdc inversion that described main generator exports under traction working condition according to inversion output command;

Auxiliary inversion unit in described first traction power supply unit is connected with isolating transformer 4 respectively by change-over swith (KM1 with KM2) with the auxiliary inversion module in the second traction power supply unit, and described first isolating transformer 4 exports to described first AC-DC converter 5 for high pressure being converted to low pressure;

Described AC/DC changeover switch 5 exports to described auxiliary inversion unit (auxiliary inversion module 3 ~ 5) for alternating-current voltage/AC voltage being converted to direct current (DC);

Described auxiliary inversion unit, for the DC inverter of reception is alternating current and by described change-over switch be described helper motor module 8, described battery charger 9 and described excitation con-trol module 10 power;

Described battery charger module 9 is locomotive storage batteries charging for alternating current being converted to direct current (DC);

Described excitation con-trol module 10, for controlling the voltage in described intermediate dc loop according to the exciting current of main generator.

The structure of the traction inversion module 1 ~ 6 in described system is identical, and the structure of auxiliary inversion module 1 ~ 5 is identical.

Preferably, described intermediate dc loop comprises: earthing detection unit, medium voltage detecting unit and filter capacitor; Described earthing detection unit is made up of two resistant series, and described resistance is used for the release of filter capacitor remaining capacity; Described medium voltage detecting unit, for detecting intermediate dc loop voltage, so that system held intermediate dc loop voltage is stable; Described filter capacitor, for carrying out the energy storage in filtering process and intermediate dc loop to the high order harmonic of middle DC loop.

Preferably, described helper motor module comprises: air compressor motor, main blower motor, traction ventilator motor, cooling fan motor, dusting fan, pump motor, described motor all adopts identical frequency.

Preferably, described cooling fan motor adopts AC blower fan.

Certainly in order to meet the demand of locomotive, the type of helper motor is diversified, then described helper motor module can also comprise other motors according to the current demand of locomotive, is correspondingly powered to helper motor by auxiliary inversion module.

Different locomotive power demands varies in size, and in order to the power demands of satisfied different locomotive, preferably, described generator set can adopt simplex winding or duplex winding according to locomotive power hierarchical selection.

When adopting duplex winding, refer to the circuit diagram of a kind of duplex winding AC drive diesel locomotive electric power system shown in Fig. 2;

When adopting simplex winding, refer to the circuit diagram of a kind of simplex winding AC drive diesel locomotive electric power system shown in Fig. 3;

Preferably, under starting duty, locomotive storage batteries charges to middle DC loop, any one traction inversion unit in described first traction power supply unit or described second traction power supply unit, for powering to electrical generator, by copped wave unit, excitation is carried out to electrical generator, to realize varying frequency starting.Specifically refer to the electric power system circuit diagram shown in Fig. 2, wherein, for the traction inversion unit 4 in the second traction power supply unit, this traction inversion unit has dual-use function, switch CTS change-over swith by control signal, realize the power and energy between locomotive traction and train starting two functions.Certainly, just give to draw the electric power system circuit diagram that inversion unit 4 is example at Fig. 2, can also be, any one traction inversion unit in described first traction power supply unit or described second traction power supply unit, namely can be any one module in traction inversion module 1 ~ 6, switch CTS change-over swith by control signal, realize the power and energy between locomotive traction and train starting two functions.At this, which traction inversion unit in system is not specifically limited.

Be described to draw inversion module 4, under traction working condition, traction inversion module 4 is that coupled traction electric machine is powered, and maintains locomotive traction function.Under starting duty, the varying frequency starting of locomotive can be realized, detailed process is: close locomotive accumulator switch BJ+, BJ-by control signal, charge to intermediate dc loop, by the auxiliary inversion module belonging to traction inversion module 4, electrical generator is powered, by the copped wave unit of self, excitation is carried out to electrical generator, realize varying frequency starting.

Preferably, under damped condition, described first traction electric machine group module and described second traction electric machine group module, convert direct current (DC) for the three-phase electricity exported by traction electric machine to by traction inversion module, export to auxiliary inversion module or consume in braking resistor.First traction electric machine group as shown in Figure 2 exports three-phase electricity and exports three-phase electricity to traction inversion module 4 ~ 6 to traction inversion module 1 ~ 3, second traction electric machine group, and direct current (DC) consumes on braking resistor BR1 and BR2 by traction inversion module respectively.Or direct current (DC) is exported to auxiliary inversion module 1 and auxiliary inversion module 2.

As shown in the circuit diagram of Fig. 2, when under damped condition, described first traction electric machine group module 3A and described second traction electric machine group module 3B, three-phase electricity for being exported by traction electric machine TM1 ~ TM6 exports to each self-corresponding traction inversion module, the correspondence of TM1 shown in figure traction inversion module 1, TM2 correspondence traction inversion module 2, TM3 correspondence traction inversion module 3, TM4 correspondence traction inversion module 4, TM5 correspondence traction inversion module 5, TM6 correspondence traction inversion module 6, direct current (DC) is converted to by traction inversion module, export to auxiliary inversion module or consume in braking resistor.

Preferably, the auxiliary inversion module in described first traction power supply unit, for being voltage and the frequency of change by the DC inverter that described intermediate dc loop inputs according to inversion control instruction, for described AC-DC converter is powered.

Preferably, the auxiliary inversion module in described second traction power supply unit, for being constant voltage and frequency according to inversion control instruction by the DC inverter that described intermediate dc loop inputs, for described AC-DC converter is powered.

Described auxiliary inversion unit comprises three auxiliary inversion modules; Then described select switch 7, for when in described auxiliary inversion module (auxiliary inversion module 6A ~ 6B) when any one or any two module et out of orders, disconnect the line breaker of corresponding malfunctioning module, carry out constant potential constant frequency power so that remaining two or module are described helper motor.In normal operation, as shown in Figure 2, KM3, KM5, KM7 in select switch 7 are in closure state, and KM4, KM6 are in off-state; When wherein any one or two module et out of orders, disconnect the line breaker of corresponding failure, closed KM4, KM6, now all loads provide the power supply centrally connected power supply of constant pressure constant frequency by one or two auxiliary inversion modules.

When locomotive also has household electricity demand to be that said system also comprises: direct-current-alternating-current converter 12, for DC voltage conversion is become household electricity, to other electric power supplies such as air-conditionings; Described direct-current-alternating-current converter and described battery charger module direct-coupling.The system diagram of concrete another kind of AC drive diesel locomotive electric power system as shown in Figure 4; This system comprises: main generator 1, first traction power supply unit 2A, the second traction power supply unit 2B, the first traction electric machine group module 3A, the second traction electric machine group module 3B, isolating transformer 4, AC/DC changeover switch 5, three auxiliary inversion module 6A ~ 6C, select switch 7, helper motor module 8, battery charger module 9, excitation con-trol module 10, direct-current-alternating-current converters 12.The physical circuit figure of electric power system shown in Fig. 4 is as shown in the another kind of AC drive diesel locomotive electric power system circuit diagram of Fig. 5.

In order to make excitation con-trol speed of response faster, make the performance of whole electric power system more excellent, the invention process two additionally provides another AC drive diesel locomotive electric power system, specifically as shown in the constructional drawing of Fig. 6, described main generator exports the input direct-coupling of winding by voltage transformer and excitation con-trol module; The three plase alternating current that main generator exports is transformed into the voltage needed for field system by voltage transformer, and the self-exitation carrying out field system controls.Except excitation con-trol module and the direct annexation of other modules convert, the interrelation between other modules remains unchanged, and concrete annexation and effect are described in detail in above-described embodiment one, do not repeat them here.

In order to realize the conversion between freight locomotive and passenger locomotive, the embodiment of the present invention three additionally provides another AC drive diesel locomotive electric power system, when train et out of order, the power demands of train still can be met, specifically as shown in the constructional drawing of Fig. 7, the basis of the electric power system that described system provides in enforcement one adds train power supply module 13, second isolating transformer 14 and the second AC-DC converter 15, described train power supply module, vdc inversion for being provided in described intermediate dc loop is that the three plase alternating current of voltage and frequency-adjustable exports to the second isolating transformer, described second isolating transformer, for being converted to low pressure by high pressure and exporting to the second AC-DC converter, described second AC-DC converter, exports to other consumers in locomotive for the interchange received being converted to direct current.Except increasing these three modules, the interrelation between other modules remains unchanged, and concrete annexation and effect are described in detail in above-described embodiment one, do not repeat them here.

Said system is also by changing the quantity of the traction inversion unit in the first traction power supply unit and the second traction power supply unit, realize the conversion between four axle modes and six axle modes, two kinds of modes, specifically the traction inversion unit 3 in former electric power system as shown in Figure 7 and traction inversion unit 6 are removed, make in the first traction power supply unit and the second traction power supply unit, all to only have two to draw inversion module to power to corresponding traction electric machine group respectively, can realize the conversion of six axles to four axles, four axles realizing locomotive control.Specifically refer to Fig. 8, its another kind of AC drive diesel locomotive electric power system circuit diagram disclosed for the application.

The electric power system provided in above-mentioned three embodiments can realize different functions, can add according to actual functional capability demand or delete corresponding module in actual applications, carry out independent assortment and realize corresponding function.

Can be found out by above-described embodiment, a kind of AC drive diesel locomotive electric power system that the application provides, intermediate loop is adopted to power to AC system, make major-minor circuit level high, eliminate auxiliary diesel generater set, save locomotive space and alleviate locomotive weight, adopt the helper motor of same nominal frequency, make electric power system integrated level better, be convenient to Platform Designing, modular design is easy to safeguard, the compatible high universalizable of module is strong, therefore, this electric power system makes the integrated level of locomotive high, lightweight, be convenient to safeguard, to strengthen the practicality of AC drive diesel locomotive.

Between each embodiment in this specification sheets, identical similar part is the difference with other embodiments mutually see, the explanation in each embodiment.System embodiment described above is only schematic, and the wherein said unit that illustrates as separating component or module, or can may not be and physically separate.Some or all of module wherein can be selected according to the actual needs to realize the object of technical scheme in the present embodiment.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.

Above a kind of AC drive diesel locomotive electric power system provided by the present invention is described in detail, apply specific embodiment herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (11)

1. an AC drive diesel locomotive electric power system, is characterized in that, comprising:
Main generator, the first traction power supply unit, the second traction power supply unit, the first traction electric machine group module, the second traction electric machine group module, the first isolating transformer, the first AC-DC converter, auxiliary inversion unit, select switch, helper motor module, battery charger module, excitation con-trol module;
Described first traction power supply unit is identical with the structure of described second traction power supply unit; Described first traction power supply unit comprises: line contactor, rectification module, intermediate dc loop, three tractions inversion module, auxiliary inversion modules; Wherein, an auxiliary inversion unit and three draw inversion unit and share intermediate dc loop;
Described first traction power supply unit, exports to described first traction electric machine group module for the three plase alternating current being voltage and frequency-adjustable by the vdc inversion that described main generator exports under traction working condition according to inversion output command;
Described second traction power supply unit, exports to described second traction electric machine group module for the three plase alternating current being voltage and frequency-adjustable by the vdc inversion that described main generator exports under traction working condition according to inversion output command;
Vdc inversion is the three plase alternating current output isolation transformer of voltage and frequency-adjustable respectively by change-over swith by the auxiliary inversion module in the auxiliary inversion unit in described first traction power supply unit and described second traction power supply unit, and described first isolating transformer is used for that high pressure is converted to low pressure and exports to described first AC-DC converter;
Described first AC-DC converter, exports to described auxiliary inversion unit for alternating-current voltage/AC voltage being converted to direct current (DC);
Described auxiliary inversion unit, for being alternating current by the DC inverter of reception and be described helper motor module, described battery charger module and described excitation con-trol module for power supply by described select switch;
Described battery charger module is locomotive storage batteries charging for alternating current being converted to direct current (DC);
Described excitation con-trol module, for controlling the voltage in described intermediate dc loop according to the exciting current of main generator;
Under varying frequency starting operating mode, locomotive storage batteries charges to middle DC loop, any one traction inversion unit in described first traction power supply unit or described second traction power supply unit, for powering to electrical generator, excitation is carried out to electrical generator, to realize varying frequency starting by copped wave unit.
2. system according to claim 1, is characterized in that, described intermediate dc loop comprises:
Earthing detection unit, medium voltage detecting unit and filter capacitor;
Described earthing detection unit is made up of two resistant series, and described resistance is used for the release of filter capacitor remaining capacity;
Described medium voltage detecting unit, for detecting intermediate dc loop voltage, so that system held intermediate dc loop voltage is stable;
Described filter capacitor, for carrying out the energy storage in filtering process and intermediate dc loop to the high order harmonic of middle DC loop.
3. system according to claim 1, it is characterized in that, described helper motor module comprises: air compressor motor, main blower motor, traction ventilator motor, cooling fan motor, dusting fan, pump motor, described motor all adopts identical frequency.
4. system according to claim 1, is characterized in that, described generator set can adopt simplex winding or duplex winding according to locomotive power hierarchical selection.
5. system according to claim 1, is characterized in that, also comprises: braking resistor unit, for consuming described first traction power supply unit or the braking energy of described second traction power supply unit under damped condition.
6. system according to claim 1, it is characterized in that, under damped condition, described first traction electric machine group module and described second traction electric machine group module, three-phase electricity for being exported by traction electric machine converts direct current (DC) to by traction inversion unit, exports to auxiliary inversion module or consumes in braking resistor.
7. system according to claim 1, is characterized in that, also comprises: direct-current-alternating-current converter, for DC voltage conversion is become household electricity; Described direct-current-alternating-current converter and described battery charger module direct-coupling.
8. system according to claim 1, is characterized in that, described auxiliary inversion unit comprises three auxiliary inversion modules; Described select switch, for when in described three auxiliary inversion modules when any one or any two module et out of orders, disconnect the line breaker of corresponding malfunctioning module, carry out constant potential constant frequency power so that remaining two or module are described helper motor.
9. system according to claim 1, it is characterized in that, auxiliary inversion module in described first traction power supply unit, for being voltage and the frequency of change by the DC inverter that described intermediate dc loop inputs according to inversion control instruction, for described AC-DC converter is powered.
10. system according to claim 1, it is characterized in that, auxiliary inversion module in described second traction power supply unit, for being constant voltage and frequency according to inversion control instruction by the DC inverter that described intermediate dc loop inputs, for described AC-DC converter is powered.
11. systems according to claim 1, is characterized in that, also comprise:
Train power supply module, the second isolating transformer and the second AC-DC converter, described train power supply module, the vdc inversion for being provided in described intermediate dc loop is that the three plase alternating current of voltage and frequency-adjustable exports to the second isolating transformer; Described second isolating transformer, for being converted to low pressure by high pressure and exporting to the second AC-DC converter; Described second AC-DC converter, exports to other consumers in locomotive for the interchange received being converted to direct current.
CN201310152904.1A 2013-04-27 2013-04-27 Alternating-current transmission diesel locomotive power supply system CN103192726B (en)

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