axle-controlled diesel locomotive and main transmission system and method thereof
阅读说明：本技术 一种轴控内燃机车及其主传动系统和方法 (axle-controlled diesel locomotive and main transmission system and method thereof ) 是由 温吉斌 赵刚 徐朝林 鲁渝玲 陈俊杰 权庆东 于 2019-11-05 设计创作，主要内容包括：一种轴控内燃机车及其主传动系统和方法,包括主发电机,所述主发电机包括多个定子输出绕组,每个所述定子输出绕组连接一个牵引电机回路。本发明每个定子输出绕组连接一个牵引电机回路,从主发电机至牵引电机都采用彼此独立的回路,保证每个牵引电机从电源至中间变流环节都电气隔离、彼此独立,保证了任何一个环节发生故障时,只会影响到该回路,机车只损失一个轴的动力,提高了机车的冗余性。(axle control diesel locomotive and its main transmission system and method, including the main generator, the said main generator includes multiple stator output winding, each said stator output winding connects traction motor return circuits, every stator output winding of the invention connects traction motor return circuits, all adopt the independent return circuit each other from main generator to traction motor, guarantee each traction motor from power to middle current transformation link all electric isolation, each is independent each other, when any links break down, can only influence this return circuit, the power of axles of locomotive only losses, have raised the redundancy of the locomotive.)
The main transmission system of the shaft-controlled diesel locomotive is characterized by comprising a main generator, wherein the main generator comprises a plurality of stator output windings, and each stator output winding is connected with traction motor loops.
2. The main drive system of the axle-controlled diesel locomotive according to claim 1, wherein said traction motor circuit comprises a three-phase rectifier circuit, an intermediate dc circuit, a traction inverter and a traction motor connected in sequence, wherein said three-phase rectifier circuit is connected to said stator output winding.
3. The main drive system of a shaft controlled diesel locomotive according to claim 1, wherein a plurality of said traction motor circuits are electrically isolated from each other.
4. The main drive system of a shaft controlled diesel locomotive according to claim 1, wherein said main generator further comprises an auxiliary stator winding, said auxiliary stator winding being connected to an auxiliary system to provide electrical power to said auxiliary system.
5. The main drive system of a shaft controlled diesel locomotive according to claim 4, wherein said auxiliary system comprises a DC auxiliary system and an AC auxiliary system, said AC auxiliary system is directly connected with said auxiliary stator winding, said DC auxiliary system is connected with said auxiliary nail winding through a rectifying circuit.
6. The main drive system of a shaft controlled diesel locomotive according to claim 1, wherein said stator output windings are four and said traction motors are also four.
An axle controlled diesel locomotive, 7, , comprising the main drive system of any of claims 1-6, .
8, A main transmission method of shaft-controlled internal combustion engine, characterized in that, the main generator is provided with a plurality of stator output windings, each stator output winding is connected with traction motor loops.
9. The main drive method for an axle controlled internal combustion engine according to claim 8, characterized in that the main generator is provided with auxiliary stator windings for supplying power to the auxiliary system.
10. The method of claim 9, wherein the auxiliary stator winding provides ac power directly to an auxiliary system requiring ac power, and wherein the auxiliary stator system is rectified to provide dc power to the auxiliary system requiring dc power.
Technical Field
The invention relates to the technical field of diesel locomotives, in particular to an axle-controlled diesel locomotive and a main transmission system thereof, and a main transmission method of the axle-controlled diesel locomotive.
Background
As shown in figure 1, a 4-shaft locomotive is taken as an example, a stator winding of a main generator sends out three-phase alternating current which is rectified into direct current through a three-phase rectifying circuit and is output to a middle direct current loop, and the direct current of the middle direct current loop is respectively inverted into three-phase alternating current to be supplied to 4 traction motors.
In order to avoid that the locomotive loses all power, the prior art also discloses a shaft control locomotive main transmission system scheme, as shown in the following figure 2, a main generator is provided with two sets of stator windings, each set of stator winding is rectified into direct current through a three-phase rectifying circuit I and a three-phase rectifying circuit II respectively to supply two sets of independent intermediate direct current loops I and II, a traction motor I and a traction motor II are connected to the intermediate direct current loop I through a traction inverter I and a traction inverter II respectively, and a traction motor III and a traction motor IV are connected to the intermediate direct current loop II through a traction inverter III and a traction inverter IV respectively.
Based on this, the prior art still remains to be improved.
Disclosure of Invention
In order to solve the above technical problems, the embodiment of the present invention provides axle-controlled diesel locomotives, main transmission systems thereof, and main transmission methods.
The main transmission system of the axle-controlled diesel locomotive disclosed by the embodiment of the invention comprises a main generator, wherein the main generator comprises a plurality of stator output windings, and each stator output winding is connected with traction motor loops.
, the traction motor loop comprises a three-phase rectification circuit, an intermediate direct current loop, a traction inverter and a traction motor which are sequentially connected in sequence, wherein the three-phase rectification circuit is connected with the stator output winding.
, the three-phase rectification circuit is disposed inside the main generator.
, electrically isolating a plurality of the traction motor circuits.
, the main generator further includes an auxiliary stator winding coupled to an auxiliary system to provide electrical power to the auxiliary system.
, the auxiliary system comprises a DC auxiliary system and an AC auxiliary system, the AC auxiliary system is directly connected with the auxiliary stator winding, and the DC auxiliary system is connected with the auxiliary nail winding through a rectification circuit.
, the number of stator output windings is four, and the number of traction motors is also four.
In another aspect, the invention discloses a axle controlled diesel locomotive, which includes the main transmission system.
In a third aspect of the main transmission methods of the shaft-controlled internal combustion engine disclosed by the embodiment of the invention, a main generator is provided with a plurality of stator output windings, and each stator output winding is connected with traction motor loops.
, the main generator sets auxiliary stator windings to power the auxiliary system.
, the auxiliary stator winding directly provides AC power to the auxiliary system requiring AC power, and the auxiliary stator system rectifies the AC power to provide DC power to the auxiliary system requiring DC power.
By adopting the technical scheme, the invention at least has the following beneficial effects:
according to the invention, each stator output winding is connected with traction motor loops, and mutually independent loops are adopted from the main generator to the traction motors, so that each traction motor is electrically isolated and mutually independent from a power supply to an intermediate current transformation link, and the situation that only the loop is influenced when any links are in fault is ensured, the locomotive only loses -axis power, and the redundancy of the locomotive is improved.
The auxiliary system is independently powered by sets of windings, so that the traction transmission system and the auxiliary system are independent and do not influence each other, and the scheme of independently powering sets of windings can reduce the rated voltage of the windings for supplying power to the auxiliary system due to low power consumption of the auxiliary system, reduce the voltage reduction conversion link in the middle of power consumption of the auxiliary system, reduce the voltage withstanding grade of the auxiliary system and improve the reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic illustration of a conventional diesel locomotive transmission system of the prior art;
FIG. 2 is a schematic diagram of a prior art AC transmission diesel locomotive power supply system;
FIG. 3 is a schematic diagram of the main transmission system of the axle-controlled diesel locomotive of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings.
It should be noted that all expressions using "" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is to be noted that "" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and no is described in the following embodiments.
As shown in FIG. 3, the embodiment of the invention discloses shaft-controlled diesel locomotives and a main transmission system thereof, which comprise a main generator, wherein the main generator 10 comprises a plurality of stator output windings, each stator output winding is connected with traction motor loops, each traction motor loop comprises a three-phase rectifying circuit, an intermediate direct current loop, a traction inverter and a traction motor which are sequentially connected, the three-phase rectifying circuit is connected with the stator output windings, and the traction motor loops are electrically isolated.
In the embodiment, each stator output winding is connected with traction motor loops, and the loops independent from each other are adopted from the main generator 10 to the traction motors, so that each traction motor is electrically isolated from a power supply to an intermediate current transformation link and is independent from each other, and the situation that when any links break down, the loop is only influenced is ensured, the locomotive only loses -axis power, and the redundancy of the locomotive is improved.
The main transmission system of the shaft-controlled internal combustion locomotive disclosed by embodiments of the invention is characterized in that on the basis of the above embodiments, three-phase rectification circuits are arranged in the main generator 10, since three-phase rectification circuits are independently adopted by each stator winding, the power required by each three-phase rectification circuit is smaller, and the space requirement required by ventilation and heat dissipation is smaller, so that the occupied volume is smaller.
The main transmission system of the axle-controlled diesel locomotive disclosed by embodiments of the invention is characterized in that the main generator 10 further comprises an auxiliary stator winding 105, the
preferred embodiments of the present invention, based on the above embodiments, the
As shown in fig. 3, in the shaft-controlled internal combustion locomotive and the main transmission system thereof disclosed in the embodiments of the present invention, 5 sets of independent stator output windings are provided inside the synchronous main generator 10, which are respectively the stator winding i 101, the stator winding ii 102, the stator winding iii 103, the
Specifically, a three-phase rectification circuit I11 rectifies three-phase alternating current output by a stator winding I101 into direct current to be supplied to an intermediate direct current loop I12, and a traction inverter I13 inverts the direct current of the intermediate direct current loop I12 into three-phase alternating current to be supplied to a traction motor I14;
the three-phase rectification circuit II 21 rectifies the three-phase alternating current output by the stator winding II 102 into direct current to be supplied to the intermediate direct current circuit II 22, and the traction inverter II 23 inverts the direct current of the intermediate direct current circuit II 22 into three-phase alternating current to be supplied to the traction motor II 24;
the three-phase rectifying circuit III 31 rectifies the three-phase alternating current output by the stator winding III 103 into direct current to be supplied to the intermediate direct current circuit III 32, and the traction inverter III 33 inverts the direct current of the intermediate direct current circuit III 32 into three-phase alternating current to be supplied to the traction motor III 34;
the three-phase rectifying circuit IV 41 rectifies the three-phase alternating current output by the stator winding IV 104 into direct current to be supplied to the intermediate direct current loop IV 42, and the traction inverter IV 43 inverts the direct current of the intermediate direct current loop IV 42 into three-phase alternating current to be supplied to the traction motor IV 44;
the three-phase alternating current output by the
When any main generator stator windings, three-phase rectifying circuit or middle direct current loop fail, other loops and systems are not affected, and power of shafts is lost, the locomotive
The embodiment of the invention also discloses an axle-controlled internal combustion engine main transmission method, wherein a main generator is provided with a plurality of stator output windings, each stator output winding is connected with traction motor loops, the main generator is provided with an auxiliary stator winding for supplying power to an auxiliary system, the auxiliary stator winding directly provides alternating current for the auxiliary system needing alternating current, and the auxiliary stator system provides direct current for the auxiliary system needing direct current after rectification.
In conclusion, the shaft-control internal combustion locomotive adopts mutually independent loops from the power generation side of the main generator to the traction motor side, adopts a plurality of sets of windings for output in the main generator of the shaft-control internal combustion locomotive according to the quantity of the traction motors, adopts independent stator windings for power supply in the auxiliary system, ensures that each traction motor is electrically isolated and mutually independent from a power supply to an intermediate current conversion link, ensures that only the loop is influenced when any link fails, only shaft power is lost by the locomotive, improves the redundancy of the locomotive, adopts sets of windings for power supply in the auxiliary system, ensures that a traction transmission system and the auxiliary system are mutually independent and not influenced.
It should be particularly noted that the various components or steps in the above embodiments can be mutually intersected, replaced, added or deleted, and therefore, the combination formed by the reasonable permutation and combination conversion shall also belong to the protection scope of the present invention, and the protection scope of the present invention shall not be limited to the embodiments.
The above is an exemplary embodiment of the present disclosure, and the order of disclosure of the above embodiment of the present disclosure is only for description and does not represent the merits of the embodiment. It should be noted that the discussion of any embodiment above is exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to those examples, and that various changes and modifications may be made without departing from the scope, as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
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