CN104467589A - Diesel locomotive alternating current-direct current transmission system and excitation control method of diesel locomotive alternating current-direct current transmission system - Google Patents
Diesel locomotive alternating current-direct current transmission system and excitation control method of diesel locomotive alternating current-direct current transmission system Download PDFInfo
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- CN104467589A CN104467589A CN201410620074.5A CN201410620074A CN104467589A CN 104467589 A CN104467589 A CN 104467589A CN 201410620074 A CN201410620074 A CN 201410620074A CN 104467589 A CN104467589 A CN 104467589A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/38—Self-excitation by current derived from rectification of both output voltage and output current of generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/44—Control of frequency and voltage in predetermined relation, e.g. constant ratio
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a diesel locomotive alternating current-direct current transmission system and an excitation control method of the diesel locomotive alternating current-direct current transmission system. The diesel locomotive alternating current-direct current transmission system comprises a main-auxiliary integrated generator, a main generator excitation device and an auxiliary generator excitation device, wherein the main-auxiliary integrated generator comprises a main rectifier, a main generator and an auxiliary generator, the main generator and the auxiliary generator are coaxially arranged, and the main generator drives a direct current traction motor to run through the main rectifier; the main generator excitation device is electrically connected with an excitation coil of the main generator to conduct excitation on the excitation coil of the main generator; the auxiliary generator excitation device is electrically connected with an excitation coil of the auxiliary generator to conduct excitation on the excitation coil of the auxiliary generator. The diesel locomotive alternating current-direct current transmission system only includes the three critical components including the main-auxiliary integrated generator, the main generator excitation device and the auxiliary generator excitation device, the number of the components is small, the weight is small, the space volume is small, the integration degree is high, the structure is simple, convenience is brought to overall layout of a locomotive, the overhauling work is less, and the overhauling work of an electric transmission system is facilitated.
Description
Technical field
The present invention relates to diesel locomotive drive technology field, particularly relate to a kind of diesel locomotive and hand over straight electric drive system and excitation control method thereof.
Background technology
Fig. 1 shows the structural representation that straight electric drive system handed over by diesel locomotive in prior art, as shown in Figure 1, in prior art, diesel locomotive hands over straight electric drive system to comprise main excitation controller 8, exciter 4, field rectifier 3, main generator 1, main converter 2, auxiliary excitation controller 14 and auxiliary generator 12, wherein, main generator 1 is for brushing hair motor, and auxiliary generator 12 is brushless generator.The front output of diesel engine 11 drives main generator 1 to run by the first power transmission shaft 101, and the rear output of diesel engine 11 drives auxiliary generator 12 to run by second driving shaft 102 simultaneously.Main excitation controller 8 of sending out is powered to the magnet exciting coil 6 of exciter 4, the direct current that the three-phase alternating current that exciter 4 exports obtains after field rectifier 3 rectification is powered to the magnet exciting coil 5 of main generator 1, the three-phase alternating current that main generator 1 exports obtains a main direct current after main converter 2 rectification, and this master sends out a DC powered DC traction motor 9 and runs.In said structure, described exciter 4, field rectifier 3 and main generator 1 three can be replaced by a brushless main generator 7, namely a main excitation controller 8 of sending out controls brushless main generator 7 and runs, the three-phase alternating current that brushless main generator 7 exports obtains a main direct current after main converter 2 rectification, sends out DC traction motor 9 described in DC powered run by this master.In addition, auxiliary generator 12 is brushless generator, and auxiliary excitation controller 14 controls the operation of auxiliary generator 12, and the three-phase alternating current that auxiliary generator 12 exports is powered directly to other load 13 of diesel locomotive.
In prior art, diesel locomotive hands over the defect of straight electric drive system to be: diesel locomotive hands over the parts of straight electric drive system many, and weight is large, and spatial volume is large, and maintenance workload is large, is extremely unfavorable for the service work of electric drive system.
Summary of the invention
Technical problem to be solved by this invention is that diesel locomotive of the prior art hands over the parts of straight electric drive system many, and weight is large, and spatial volume is large, and maintenance workload is large, is extremely unfavorable for the service work of electric drive system.
In order to solve the problems of the technologies described above, the invention provides that a kind of parts are few, lightweight, spatial volume is little, be conducive to the diesel locomotive of service work hands over straight electric drive system and excitation control method thereof.
Technical scheme of the present invention is:
Straight electric drive system handed over by a kind of diesel locomotive, comprising:
Major-minor power integrated generator, the auxiliary generator comprise main generator, coaxially arranging with described main generator and the main converter be electrically connected with the three-phase alternating current output of described main generator; The output shaft of diesel engine drives and is the described main generator and described auxiliary generator synchronous operation that brush hair motor, and the DC powered DC traction motor that described main converter exports runs;
A main excitation unit, is electrically connected with the magnet exciting coil of described main generator, to carry out excitation to the magnet exciting coil of described main generator; And
Auxiliary excitation unit, is electrically connected with the magnet exciting coil of described auxiliary generator, to carry out excitation to the magnet exciting coil of described auxiliary generator.
Preferably, described master sends out excitation unit and comprises and main send out excitation chopper and mainly send out excitation controller; Described master sends out excitation chopper and comprises:
Rectification circuit, is electrically connected with the three-phase alternating current output of described auxiliary generator, carries out rectification, obtain the first direct current with auxiliary the three-phase voltage exported described auxiliary generator; And
DC chopper circuit, the magnet exciting coil sending out excitation controller and described main generator respectively with described rectification circuit, described master is electrically connected, the PWM duty ratio exported to send out excitation controller according to described master carries out DC-to-DC conversion to described first direct current, obtain the second direct current, and utilize described second direct current to carry out excitation to the magnet exciting coil of described main generator.
Preferably, described DC chopper circuit is DC boosting chopper circuit.
Preferably, described auxiliary excitation unit comprises:
Storage battery; And
Auxiliary excitation controller, be electrically connected with the magnet exciting coil of described storage battery and described auxiliary generator respectively, carry out DC-to-DC conversion with the direct current exported described storage battery, obtain the 3rd direct current, and utilize described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
Preferably, described auxiliary excitation unit comprises:
Storage battery;
Diverter switch; And
Auxiliary excitation controller, is electrically connected with the three-phase alternating current output of described auxiliary generator and the magnet exciting coil of described auxiliary generator respectively, and described auxiliary excitation controller is also connected with described storage battery by described diverter switch;
Before auxiliary the three-phase voltage foundation that described auxiliary generator exports, described diverter switch is in closure state, described auxiliary excitation controller carries out DC-to-DC conversion to the direct current that described storage battery exports, obtain the 3rd direct current, and utilize described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator;
After auxiliary the three-phase voltage foundation that described auxiliary generator exports, described diverter switch is in off-state, described auxiliary excitation controller carries out rectification to auxiliary the three-phase voltage that described auxiliary generator exports, obtain the 5th direct current, and utilize described 5th direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
Preferably, described auxiliary excitation unit also comprises battery charger, and described battery charger is connected with described storage battery, with to described charge in batteries.
Preferably, described battery charger is also electrically connected with the three-phase alternating current output of described auxiliary generator, carry out rectification with auxiliary the three-phase voltage exported described auxiliary generator, obtain the 4th direct current, and utilize described 4th direct current to described charge in batteries.
Preferably, the three-phase alternating current output of described auxiliary generator is also electrically connected with the electrical load of described diesel locomotive.
An excitation control method for straight electric drive system handed over by diesel locomotive, and its auxiliary generator excitation control method comprises:
The rotational frequency of auxiliary three-phase voltage of auxiliary generator described in Real-time Obtaining and the output shaft of described diesel engine;
Calculate the ratio of described auxiliary three-phase voltage and described rotational frequency, obtain voltage-frequency ratio;
Described auxiliary excitation controller than constant principle, carries out DC-to-DC conversion to the direct current that described storage battery exports according to described voltage-frequency, obtains the 3rd direct current, and utilizes described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
An excitation control method for straight electric drive system handed over by diesel locomotive, and its auxiliary generator excitation control method comprises:
The rotational frequency of auxiliary three-phase voltage of auxiliary generator described in Real-time Obtaining and the output shaft of described diesel engine;
Calculate the ratio of described auxiliary three-phase voltage and described rotational frequency, obtain voltage-frequency ratio;
Judge whether described auxiliary three-phase voltage is set up;
If not, then control described diverter switch and be in closure state, and according to described voltage-frequency than constant principle, DC-to-DC conversion is carried out to the direct current that described storage battery exports, obtain the 3rd direct current, and utilize described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator;
If, then control described diverter switch and be in off-state, and according to described voltage-frequency than constant principle, rectification is carried out to auxiliary three-phase voltage of described auxiliary generator, obtain the 5th direct current, and utilize described 5th direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
Compared with prior art, the one or more embodiments in such scheme can have the following advantages or beneficial effect by tool:
Straight electric drive system handed over by the diesel locomotive that the application embodiment of the present invention provides, forming this diesel locomotive hands over the critical component of straight electric drive system to only have three, i.e. major-minor power integrated generator, main excitation unit and auxiliary excitation unit, parts are few, lightweight, spatial volume is little, integrated level is high, structure is simple, be convenient to locomotive integral layout, maintenance workload is little, extremely be conducive to the service work of electric drive system, thoroughly solve diesel locomotive in prior art hand over straight electric drive system due to parts many, weight is large, the defect of the service work of electric drive system that what spatial volume caused greatly be unfavorable for.
Other features and advantages of the present invention will be set forth in the following description, and partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, with embodiments of the invention jointly for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 shows the structural representation that straight electric drive system handed over by diesel locomotive in prior art;
Fig. 2 shows a kind of structural representation that straight electric drive system handed over by embodiment of the present invention diesel locomotive;
Fig. 3 shows the main corresponding relation schematic diagram sending out excitation chopper PWM input and output in the embodiment of the present invention;
Fig. 4 shows the another kind of structural representation that straight electric drive system handed over by embodiment of the present invention diesel locomotive;
Fig. 5 shows a kind of flow chart that the excitation control method of straight electric drive system handed over by embodiment of the present invention diesel locomotive;
Fig. 6 to show in the embodiment of the present invention voltage-frequency than the schematic diagram of constant principle;
Fig. 7 shows the another kind of flow chart that the excitation control method of straight electric drive system handed over by embodiment of the present invention diesel locomotive.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
Hand over the parts of straight electric drive system many for solving diesel locomotive in prior art, weight is large, and spatial volume is large, and maintenance workload is large, extremely be unfavorable for the defect of the service work of electric drive system, embodiments provide a kind of diesel locomotive and hand over straight electric drive system and excitation control method thereof.
As shown in Figure 2, be a kind of structural representation that straight electric drive system handed over by the diesel locomotive of the embodiment of the present invention, described diesel locomotive hands over straight electric drive system to comprise major-minor power integrated generator 17, mainly send out excitation unit and an auxiliary excitation unit.
Particularly, described major-minor power integrated generator 17, comprise main generator, auxiliary generator and main converter 2, wherein, main generator and auxiliary generator have been and have brushed hair motor, main generator and auxiliary generator are coaxially arranged, and synchronously driven operation by the power transmission shaft of diesel engine 11, the three-phase alternating current output of main generator connects the direct current input of DC traction motor 9 by main converter 2, the master that the main converter 2 pairs of main generators export sends out after three-phase voltage carries out rectification, and the DC powered DC traction motor 9 obtained after utilizing rectification runs.Main generator and the auxiliary generator of coaxial setting integrate, form the main and backup generator 18 shown in Fig. 2, main generator, auxiliary generator and main converter 2 three be arranged in common frame, also be provided with brush and the slip ring of the brush of the magnet exciting coil 16 of corresponding main generator and the magnet exciting coil 20 of slip ring and corresponding auxiliary generator in framework, thus respectively excitation carried out to the magnet exciting coil 16 of main generator and the magnet exciting coil 20 of auxiliary generator.Here, what deserves to be explained is, because the structure of major-minor power integrated generator 17 itself is state of the art, so no longer carry out expansion explanation to the concrete structure of major-minor power integrated generator 17 inside in this article.
A main excitation unit, is electrically connected with the magnet exciting coil 16 of described main generator, for carrying out excitation to the magnet exciting coil 16 of main generator; Similarly, auxiliary excitation unit, is electrically connected with the magnet exciting coil 20 of described auxiliary generator, for carrying out excitation to the magnet exciting coil 20 of auxiliary generator.
In the present embodiment, forming diesel locomotive hands over the critical component of straight electric drive system to only have three, i.e. major-minor power integrated generator 17, main excitation unit and auxiliary excitation unit, parts are few, lightweight, spatial volume is little, integrated level is high, structure is simple, and be convenient to locomotive integral layout, maintenance workload is little, extremely be conducive to the service work of electric drive system, thoroughly solve diesel locomotive in prior art hand over straight electric drive system due to parts many, weight is large, the defect of the service work of electric drive system that what spatial volume caused greatly be unfavorable for.
Further, in the present invention one preferred embodiment, send out excitation unit done further improvement to described master, particularly, referring again to Fig. 2, a main excitation unit comprises a main excitation chopper 19 and a main excitation controller 8.
Wherein, described master sends out excitation chopper 19 and comprises rectification circuit and DC chopper circuit (attached not shown), described rectification circuit is electrically connected with the three-phase alternating current output of auxiliary generator, auxiliary the three-phase voltage for exporting auxiliary generator carries out rectification, obtains the first direct current.Described DC chopper circuit respectively with rectification circuit, the main magnet exciting coil 16 sending out excitation controller 8 and main generator is electrically connected, main excitation controller 8 of sending out is according to the power requirement of DC traction motor in actual condition 9, export corresponding PWM duty ratio, by multiple IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) DC chopper circuit that combines sends out the PWM duty ratio that excitation controller 8 exports and carries out DC-to-DC conversion (DC-DC conversion) according to main to the first direct current that rectification circuit exports, obtain the second direct current, then DC chopper circuit utilizes the magnet exciting coil 16 of the second direct current to main generator to carry out excitation.Especially, described DC chopper circuit is preferably DC boosting chopper circuit, now the function of described DC chopper circuit is equivalent to power amplifier, as shown in Figure 3, it is the main corresponding relation schematic diagram sending out excitation chopper 19PWM input and output in the embodiment of the present invention, solid line in figure represents the corresponding relation of PWM input and output in normal control situation, and under the dotted line in figure represents Failure Control situation, it is zero that PWM exports unification.In the figure, DC chopper circuit amplifies according to linear ratio relation the first direct current that rectification circuit exports, and obtains the second direct current, here, using the second direct current than the first direct current TV university as the exciting current of main generator.
In the present embodiment, main excitation chopper 19 of sending out is adopted to carry out excitation with the main magnet exciting coil 16 sending out excitation controller 8 pairs of main generators, more traditional carries out excitation by exciter to the magnet exciting coil of main generator, the exciting current produced is wider, more easily meet the demanded power output of main generator, such as adopt above-mentioned excitation unit, more easily reach the exciting current of the main generator of such as maximum 200A; Control more flexible, real-time is good, is conducive to improving the service behaviour that straight electric drive system handed over by whole diesel locomotive.
Further, in the present invention one preferred embodiment, done further improvement to described auxiliary excitation unit, particularly, referring again to Fig. 2, described auxiliary excitation unit comprises storage battery 21 and auxiliary excitation controller 14.
Wherein, auxiliary excitation controller 14 is electrically connected with the magnet exciting coil 20 of described storage battery 21 and described auxiliary generator respectively, utilization is stored in the magnet exciting coil 20 of the direct current in storage battery 21 to auxiliary generator and carries out excitation, in detail, after auxiliary excitation controller 14 first carries out DC-to-DC conversion to the direct current of storage battery 21 output, obtain the 3rd direct current, then utilize the magnet exciting coil 20 of the 3rd direct current to auxiliary generator to carry out excitation.The excitation control method that auxiliary excitation controller 14 is concrete, will set forth by composition graphs 5 hereinafter in detail.
In the present embodiment, the exciting current of auxiliary generator comes from storage battery 21 all the time, in the starting stage, the pre-excitation electric energy that the electric energy stored in storage battery 21 starts as major-minor power integrated generator 17, can normally start to make major-minor power integrated generator 17, in follow-up phase, in order to whole system simplicity structurally, the exciting current of described auxiliary generator still comes from this storage battery 21.In the present invention one preferred embodiment, described auxiliary excitation unit also comprises the battery charger 22 be electrically connected with storage battery 21, for charging to storage battery 21.Especially, the electric energy of described battery charger 22 comes from the auxiliary three-phase voltage of auxiliary generator output, namely, described battery charger 22 is also preferably electrically connected with the three-phase alternating current output of described auxiliary generator, rectification is carried out with auxiliary the three-phase voltage exported described auxiliary generator, obtain the 4th direct current, and utilize described 4th direct current to charge to described storage battery 21, indirectly achieve the self-excitation of auxiliary generator.
In another preferred embodiment of the present invention, also done further improvement to described auxiliary excitation unit, particularly, with reference to Fig. 4, described auxiliary excitation unit comprises storage battery 21, diverter switch 23 and auxiliary excitation controller 14.
Wherein, auxiliary excitation controller 14 is electrically connected with the three-phase alternating current output of described auxiliary generator and the magnet exciting coil 20 of described auxiliary generator respectively, described auxiliary excitation controller 14 is also electrically connected with described storage battery 21 by described diverter switch 23, thus before realizing auxiliary the three-phase voltage foundation exported at auxiliary generator, the magnet exciting coil 20 of electric energy to auxiliary generator that auxiliary excitation controller 14 utilizes storage battery 21 to store carries out excitation, after auxiliary three-phase voltage is set up, auxiliary excitation controller 14 utilizes the magnet exciting coil 20 of this auxiliary three-phase voltage to auxiliary generator to carry out excitation.In detail, before auxiliary the three-phase voltage foundation that described auxiliary generator exports, described diverter switch 23 is in closure state, described auxiliary excitation controller 14 carries out DC-to-DC conversion to the direct current that described storage battery 21 exports, obtain the 3rd direct current, and utilize the magnet exciting coil 20 of described 3rd direct current to described auxiliary generator to carry out excitation.After auxiliary the three-phase voltage foundation that described auxiliary generator exports, described diverter switch 23 is in off-state, described auxiliary excitation controller 14 carries out rectification to auxiliary the three-phase voltage that described auxiliary generator exports, obtain the 5th direct current, and utilize the magnet exciting coil 20 of described 5th direct current to described auxiliary generator to carry out excitation.The excitation control method that auxiliary excitation controller 14 is concrete, will set forth by composition graphs 7 hereinafter in detail.
In the present embodiment, in the starting stage, namely before auxiliary three-phase voltage of auxiliary generator is not set up, the exciting current of auxiliary generator comes from storage battery 21, the pre-excitation electric energy that the electric energy stored in storage battery 21 starts as major-minor power integrated generator 17, can normally start to make major-minor power integrated generator 17.In follow-up phase, namely after auxiliary three-phase voltage of auxiliary generator is set up, consider the size of the capacity of storage battery 21 and the capacity of storage battery 21 power supply and auxiliary rib exciter current of generator, the exciting current of auxiliary generator comes from auxiliary three-phase voltage, avoids because storage battery 21 repeats the problem that discharge and recharge result in the loss battery-operated life-span.In the present invention one preferred embodiment, described auxiliary excitation unit also comprises the battery charger 22 be electrically connected with storage battery 21, for charging to storage battery 21 when the above-mentioned starting stage.Especially, the electric energy of described battery charger 22 comes from the auxiliary three-phase voltage of auxiliary generator output, namely, described battery charger 22 is also preferably electrically connected with the three-phase alternating current output of described auxiliary generator, rectification is carried out with auxiliary the three-phase voltage exported described auxiliary generator, obtain the 4th direct current, and utilize described 4th direct current to charge to described storage battery 21, be combined in described follow-up phase, auxiliary excitation controller 14 utilizes the magnet exciting coil 20 of auxiliary three-phase voltage to auxiliary generator to carry out excitation, achieve the self-excitation of auxiliary generator.
In a preferred embodiment of the present invention, the three-phase alternating current output of described auxiliary generator is also electrically connected with the electrical load 13 of described diesel locomotive, thus utilize auxiliary three-phase voltage to be also used for powering to other electrical load 13 (cooling fan, air compressor, driver's air-conditioning, dedusting fan etc. of such as traction ventilator, diesel engine 11) of locomotive, like this, the electricity that most main generator exports may be used to drive DC traction motor 9, improves the runnability of whole diesel locomotive.In addition, by regulating the mode of the exciting current of auxiliary generator, auxiliary generator can be made to export auxiliary three-phase voltage of different brackets, so that the application of other electrical load 13 auxiliary.
The embodiment of the present invention additionally provides the excitation control method handing over straight electric drive system for the diesel locomotive shown in Fig. 2, as shown in Figure 5, be a kind of flow chart that the excitation control method of straight electric drive system handed over by embodiment of the present invention diesel locomotive, the auxiliary generator excitation control method of described excitation control method comprises the following steps:
Step S1: the rotational frequency of auxiliary three-phase voltage of auxiliary generator described in Real-time Obtaining and the output shaft of described diesel engine 11.
Particularly, because the apparatus and method gathering three-phase voltage and axis of rotation frequency in this step all belong to this area routine techniques means, therefore no longer expansion explanation is carried out in this article.
Step S2: the ratio calculating described auxiliary three-phase voltage and described rotational frequency, obtains voltage-frequency ratio.
Step S3: described auxiliary excitation controller 14 according to described voltage-frequency than constant principle, DC-to-DC conversion is carried out to the direct current that described storage battery 21 exports, obtain the 3rd direct current, and utilize the magnet exciting coil 20 of described 3rd direct current to described auxiliary generator to carry out excitation.
Particularly, based on voltage-frequency than the principle (Fig. 6 shows the schematic diagram of voltage-frequency than constant principle) equaling the constant set, auxiliary excitation controller 14 regulates the exciting voltage/electric current of auxiliary generator by the mode that the direct current exported storage battery 21 carries out DC-DC conversion, and the 3rd direct current is the exciting voltage of described auxiliary generator here.In detail, when the rotating speed of the output shaft of diesel engine 11 increases, the rotational frequency of the output shaft of diesel engine 11 also synchronously increases, now, for ensureing that voltage-frequency is than constant, need by regulating exciting voltage/electric current to make auxiliary three-phase voltage increase, due to well-known to those skilled in the art: the increase of exciting voltage/electric current can cause the increase of auxiliary three-phase voltage, so in such cases should the exciting voltage/electric current of corresponding increase auxiliary generator.
In the present embodiment, auxiliary excitation controller 14 regulates the exciting voltage/electric current of auxiliary generator than constant principle according to voltage-frequency, diesel engine coaxially drives major-minor power integrated generator 17, diesel engine speed is higher, auxiliary the three-phase voltage that auxiliary generator exports is larger, by voltage-frequency more auxiliary than constant control three-phase voltage, the demand of assistant load as traction ventilator, cooling fan must be met simultaneously; Diesel engine 11 combines a main excitation controller 8 regulates main generator exciting voltage/electric current according to the power requirement of DC traction motor in actual condition 9, an independently main excitation chopper 19, amplify one-level master according to linear ratio relation and send out exciting current, be convenient to locomotive and control fast.Adopt independently auxiliary excitation controller 14 and a main excitation chopper 19 to achieve the conservative control of major-minor power integrated generator 17 power, control simple, fast response time simultaneously; Highly versatile, is convenient to the application of other association area.
The embodiment of the present invention additionally provides the excitation control method handing over straight electric drive system for the diesel locomotive shown in Fig. 4, as shown in Figure 7, be the another kind of flow chart that the excitation control method of straight electric drive system handed over by embodiment of the present invention diesel locomotive, the auxiliary generator excitation control method of described excitation control method comprises the following steps:
Step S1: the rotational frequency of auxiliary three-phase voltage of auxiliary generator described in Real-time Obtaining and the output shaft of described diesel engine 11.
Step S2: the ratio calculating described auxiliary three-phase voltage and described rotational frequency, obtains voltage-frequency ratio.
Step S4: judge whether described auxiliary three-phase voltage is set up.
Particularly, judge that the method whether auxiliary three-phase voltage is set up can be: judge whether auxiliary the three-phase voltage that auxiliary generator exports is greater than zero, also for judge whether this auxiliary three-phase voltage is greater than or equal to the magnitude of voltage of setting, if so, then can think that this auxiliary three-phase voltage is set up.
Step S5: if not, then control described diverter switch 23 and be in closure state, and according to described voltage-frequency than constant principle, DC-to-DC conversion is carried out to the direct current that described storage battery 21 exports, obtain the 3rd direct current, and utilize the magnet exciting coil 20 of described 3rd direct current to described auxiliary generator to carry out excitation.
Particularly, when auxiliary the three-phase voltage determining that auxiliary generator exports is not set up, control diverter switch 23 is in and is in closure state all the time, the magnet exciting coil 20 of the electric energy utilizing storage battery 21 to store to auxiliary generator carries out excitation, regulate the exciting voltage/electric current of auxiliary generator than the principle equaling the constant set based on voltage-frequency simultaneously, the method of concrete adjustment, with the particular content of step S3, does not repeat them here.
Step S6: if, then control described diverter switch 23 and be in off-state, and according to described voltage-frequency than constant principle, rectification is carried out to auxiliary three-phase voltage of described auxiliary generator, obtain the 5th direct current, and utilize the magnet exciting coil 20 of described 5th direct current to described auxiliary generator to carry out excitation.
Particularly, after determining auxiliary the three-phase voltage foundation that auxiliary generator exports, control diverter switch 23 to disconnect, the magnet exciting coil 20 of auxiliary three-phase voltage to auxiliary generator is utilized to carry out excitation, regulate the exciting voltage/electric current of auxiliary generator than the principle equaling the constant set based on voltage-frequency simultaneously, the method of concrete adjustment, with the particular content of step S3, does not repeat them here.
In the present embodiment, first whether auxiliary excitation controller 14 set up the source of the exciting voltage/electric current determining auxiliary generator according to auxiliary three-phase voltage, then regulate the exciting voltage/electric current of auxiliary generator than constant principle according to voltage-frequency, send out the exciting voltage/electric current of excitation controller 8 device according to the power requirement adjustment main generator of DC traction motor in actual condition 9 in conjunction with main, achieve the conservative control of major-minor power integrated generator 17 power.
Although execution mode disclosed in this invention is as above, the execution mode that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite not departing from spirit and scope disclosed in this invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (10)
1. a straight electric drive system handed over by diesel locomotive, it is characterized in that, comprising:
Major-minor power integrated generator, the auxiliary generator comprise main generator, coaxially arranging with described main generator and the main converter be electrically connected with the three-phase alternating current output of described main generator; The output shaft of diesel engine drives and is the described main generator and described auxiliary generator synchronous operation that brush hair motor, and the DC powered DC traction motor that described main converter exports runs;
A main excitation unit, is electrically connected with the magnet exciting coil of described main generator, to carry out excitation to the magnet exciting coil of described main generator; And
Auxiliary excitation unit, is electrically connected with the magnet exciting coil of described auxiliary generator, to carry out excitation to the magnet exciting coil of described auxiliary generator.
2. straight electric drive system handed over by diesel locomotive according to claim 1, it is characterized in that, described master sends out excitation unit and comprises a main excitation chopper and a main excitation controller; Described master sends out excitation chopper and comprises:
Rectification circuit, is electrically connected with the three-phase alternating current output of described auxiliary generator, carries out rectification, obtain the first direct current with auxiliary the three-phase voltage exported described auxiliary generator; And
DC chopper circuit, the magnet exciting coil sending out excitation controller and described main generator respectively with described rectification circuit, described master is electrically connected, the PWM duty ratio exported to send out excitation controller according to described master carries out DC-to-DC conversion to described first direct current, obtain the second direct current, and utilize described second direct current to carry out excitation to the magnet exciting coil of described main generator.
3. straight electric drive system handed over by diesel locomotive according to claim 2, it is characterized in that, described DC chopper circuit is DC boosting chopper circuit.
4. straight electric drive system handed over by the diesel locomotive according to Claims 2 or 3, it is characterized in that, described auxiliary excitation unit comprises:
Storage battery; And
Auxiliary excitation controller, be electrically connected with the magnet exciting coil of described storage battery and described auxiliary generator respectively, carry out DC-to-DC conversion with the direct current exported described storage battery, obtain the 3rd direct current, and utilize described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
5. straight electric drive system handed over by the diesel locomotive according to Claims 2 or 3, it is characterized in that, described auxiliary excitation unit comprises:
Storage battery;
Diverter switch; And
Auxiliary excitation controller, is electrically connected with the three-phase alternating current output of described auxiliary generator and the magnet exciting coil of described auxiliary generator respectively, and described auxiliary excitation controller is also connected with described storage battery by described diverter switch;
Before auxiliary the three-phase voltage foundation that described auxiliary generator exports, described diverter switch is in closure state, described auxiliary excitation controller carries out DC-to-DC conversion to the direct current that described storage battery exports, obtain the 3rd direct current, and utilize described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator;
After auxiliary the three-phase voltage foundation that described auxiliary generator exports, described diverter switch is in off-state, described auxiliary excitation controller carries out rectification to auxiliary the three-phase voltage that described auxiliary generator exports, obtain the 5th direct current, and utilize described 5th direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
6. straight electric drive system handed over by the diesel locomotive according to claim 4 or 5, it is characterized in that, described auxiliary excitation unit also comprises battery charger, and described battery charger is connected with described storage battery, with to described charge in batteries.
7. straight electric drive system handed over by diesel locomotive according to claim 6, it is characterized in that, described battery charger is also electrically connected with the three-phase alternating current output of described auxiliary generator, rectification is carried out with auxiliary the three-phase voltage exported described auxiliary generator, obtain the 4th direct current, and utilize described 4th direct current to described charge in batteries.
8. straight electric drive system handed over by the diesel locomotive according to any one of claims 1 to 3, it is characterized in that, the three-phase alternating current output of described auxiliary generator is also electrically connected with the electrical load of described diesel locomotive.
9. an excitation control method for straight electric drive system handed over by the diesel locomotive according to any one of claim 4,6 and 7, it is characterized in that, its auxiliary generator excitation control method comprises:
The rotational frequency of auxiliary three-phase voltage of auxiliary generator described in Real-time Obtaining and the output shaft of described diesel engine;
Calculate the ratio of described auxiliary three-phase voltage and described rotational frequency, obtain voltage-frequency ratio;
Described auxiliary excitation controller than constant principle, carries out DC-to-DC conversion to the direct current that described storage battery exports according to described voltage-frequency, obtains the 3rd direct current, and utilizes described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
10. an excitation control method for straight electric drive system handed over by the diesel locomotive according to any one of claim 5 to 7, it is characterized in that, its auxiliary generator excitation control method comprises:
The rotational frequency of auxiliary three-phase voltage of auxiliary generator described in Real-time Obtaining and the output shaft of described diesel engine;
Calculate the ratio of described auxiliary three-phase voltage and described rotational frequency, obtain voltage-frequency ratio;
Judge whether described auxiliary three-phase voltage is set up;
If not, then control described diverter switch and be in closure state, and according to described voltage-frequency than constant principle, DC-to-DC conversion is carried out to the direct current that described storage battery exports, obtain the 3rd direct current, and utilize described 3rd direct current to carry out excitation to the magnet exciting coil of described auxiliary generator;
If, then control described diverter switch and be in off-state, and according to described voltage-frequency than constant principle, rectification is carried out to auxiliary three-phase voltage of described auxiliary generator, obtain the 5th direct current, and utilize described 5th direct current to carry out excitation to the magnet exciting coil of described auxiliary generator.
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| CN201410620074.5A CN104467589A (en) | 2014-11-05 | 2014-11-05 | Diesel locomotive alternating current-direct current transmission system and excitation control method of diesel locomotive alternating current-direct current transmission system |
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| CN201410620074.5A CN104467589A (en) | 2014-11-05 | 2014-11-05 | Diesel locomotive alternating current-direct current transmission system and excitation control method of diesel locomotive alternating current-direct current transmission system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857321A (en) * | 2016-05-28 | 2016-08-17 | 中车永济电机有限公司 | 1,000 KW heavy motor trolley alternating current transmission system |
| CN107472269A (en) * | 2017-09-15 | 2017-12-15 | 宝鸡中车时代工程机械有限公司 | Railways driven type integrates inspection car |
| CN110001672A (en) * | 2019-05-10 | 2019-07-12 | 中车资阳机车有限公司 | A kind of power concentration formula direct current Diesel Multiple Unit power supply system of train |
| CN110994758A (en) * | 2019-11-26 | 2020-04-10 | 中车大连机车车辆有限公司 | Diesel locomotive and power generation system thereof |
| CN113472268A (en) * | 2021-06-04 | 2021-10-01 | 中国人民解放军海军工程大学 | High-power motor excitation device and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5759499A (en) * | 1980-09-27 | 1982-04-09 | Seikosha Seisakusho:Kk | Generator apparatus |
| CN202073067U (en) * | 2011-05-09 | 2011-12-14 | 南车戚墅堰机车有限公司 | Ice and snow remover electrical system |
| CN102916640A (en) * | 2012-11-12 | 2013-02-06 | 株洲南车时代电气股份有限公司 | Phase-control excitation control device and method for internal combustion locomotive |
| CN103192726A (en) * | 2013-04-27 | 2013-07-10 | 株洲南车时代电气股份有限公司 | Alternating-current transmission diesel locomotive power supply system |
-
2014
- 2014-11-05 CN CN201410620074.5A patent/CN104467589A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5759499A (en) * | 1980-09-27 | 1982-04-09 | Seikosha Seisakusho:Kk | Generator apparatus |
| CN202073067U (en) * | 2011-05-09 | 2011-12-14 | 南车戚墅堰机车有限公司 | Ice and snow remover electrical system |
| CN102916640A (en) * | 2012-11-12 | 2013-02-06 | 株洲南车时代电气股份有限公司 | Phase-control excitation control device and method for internal combustion locomotive |
| CN103192726A (en) * | 2013-04-27 | 2013-07-10 | 株洲南车时代电气股份有限公司 | Alternating-current transmission diesel locomotive power supply system |
Non-Patent Citations (1)
| Title |
|---|
| 郭元梅等: "东风8CJ型交流传动货运内燃机车辅助传动系统选型与设计", 《铁道机车车辆》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857321A (en) * | 2016-05-28 | 2016-08-17 | 中车永济电机有限公司 | 1,000 KW heavy motor trolley alternating current transmission system |
| CN107472269A (en) * | 2017-09-15 | 2017-12-15 | 宝鸡中车时代工程机械有限公司 | Railways driven type integrates inspection car |
| CN110001672A (en) * | 2019-05-10 | 2019-07-12 | 中车资阳机车有限公司 | A kind of power concentration formula direct current Diesel Multiple Unit power supply system of train |
| CN110001672B (en) * | 2019-05-10 | 2023-05-30 | 中车资阳机车有限公司 | Power centralized type direct-current internal combustion motor train unit train power supply system |
| CN110994758A (en) * | 2019-11-26 | 2020-04-10 | 中车大连机车车辆有限公司 | Diesel locomotive and power generation system thereof |
| CN110994758B (en) * | 2019-11-26 | 2024-02-02 | 中车大连机车车辆有限公司 | Diesel locomotive and power generation system thereof |
| CN113472268A (en) * | 2021-06-04 | 2021-10-01 | 中国人民解放军海军工程大学 | High-power motor excitation device and control method |
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Application publication date: 20150325 |