CN212332640U - Hybrid shunting locomotive control system based on four-quadrant rectification - Google Patents
Hybrid shunting locomotive control system based on four-quadrant rectification Download PDFInfo
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- CN212332640U CN212332640U CN202021651259.XU CN202021651259U CN212332640U CN 212332640 U CN212332640 U CN 212332640U CN 202021651259 U CN202021651259 U CN 202021651259U CN 212332640 U CN212332640 U CN 212332640U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The utility model discloses a hybrid shunting locomotive control system based on four-quadrant rectification, a serial communication port, shunting locomotive control system includes at least: the system comprises a power battery, a diesel generator set, a four-quadrant rectification module, a pre-charging module and a traction motor; the power battery is electrically connected with the traction motor through a pre-charging module; the diesel generator set is respectively connected with a pre-charging module and a power battery through the four-quadrant rectification module and is electrically connected with a traction motor through the pre-charging module; and supplying power to the traction motor through the power battery and/or the diesel generator set. The control system solves the problems of complex control strategy and high control difficulty in the traditional technology through the structural arrangement.
Description
Technical Field
The utility model belongs to the technical field of the new forms of energy shunting locomotive, especially, relate to a hybrid shunting locomotive control system based on four-quadrant rectification.
Background
The existing shunting locomotives are basically diesel engine-based electric transmission or hydraulic transmission shunting locomotives and have no control logic in the aspect of hybrid power. A part of new energy hybrid shunting locomotives are based on a special diesel engine and a main generator and are mainly matched according to a diesel engine characteristic curve and a main generator characteristic curve, so that the control strategy is complex and the control difficulty is high.
Therefore, a shunting control system for hybrid power is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art defect, provide a hybrid shunting locomotive control system based on four-quadrant rectification, solved in the conventional art control strategy complicacy through this control system's structure setting, the big problem of the control degree of difficulty.
The purpose of the utility model is realized through the following technical scheme:
a hybrid shunting locomotive control system based on four-quadrant rectification, the shunting locomotive control system comprising at least: the system comprises a power battery, a diesel generator set, a four-quadrant rectification module, a pre-charging module and a traction motor; the power battery is electrically connected with the traction motor through a pre-charging module; the diesel generator set is respectively connected with a pre-charging module and a power battery through the four-quadrant rectification module and is electrically connected with a traction motor through the pre-charging module; and supplying power to the traction motor through the power battery and/or the diesel generator set.
According to a preferred embodiment, the shunting locomotive control system further comprises an industrial generator set, and the industrial generator set is respectively connected with the power battery and the traction motor through the four-quadrant rectification module.
According to a preferred embodiment, the shunting locomotive control system further comprises a locomotive auxiliary system, and the power battery is connected with the locomotive auxiliary system through the four-quadrant rectification module and supplies power to the locomotive auxiliary system; the diesel generator set and the industrial generator set are connected with the locomotive auxiliary system to supply power to the locomotive auxiliary system; the locomotive auxiliary system includes at least a traction motor ventilator and an air conditioning/life power unit.
According to a preferred embodiment, when the shunting locomotive control system is in a pure electric working condition, the power battery supplies power to the traction motor, and meanwhile, the power battery supplies power to the auxiliary system through the four-quadrant rectification module.
According to a preferred embodiment, when the shunting locomotive control system is in a pure electric working condition, the four-quadrant rectification module works in an inversion mode, the four-quadrant rectification module is used as an inverter to output 380V/50Hz alternating current, and the alternating current is supplied to an auxiliary system for power consumption after being subjected to sine wave filtering.
According to a preferred embodiment, when the shunting locomotive control system is in a pure diesel working condition, the power battery is disconnected with the pre-charging module, the diesel generator set supplies power to the traction motor through a four-quadrant rectification module,
according to a preferred embodiment, when the shunting locomotive control system is in a pure diesel condition, the four-quadrant rectification module works in a PWM rectification mode and outputs a constant DC608V DC voltage.
According to a preferred embodiment, when the shunting locomotive control system is in a mixed working condition, when the shunting locomotive is in a low handle position, the power battery preferentially supplies power to the traction motor, when the SOC of the power battery is lower than 30%, the diesel generator set is started to supply power to the traction motor, and when the diesel generator set meets the traction power requirement, the residual power charges the power battery; when the shunting locomotive is at a high handle position, the diesel generator is started, and the output of the four-quadrant rectification module is controlled to realize the mixing of the diesel generator set and the power battery to supply power to the traction motor.
According to a preferred embodiment, when the shunting locomotive control system is in a mixed working condition and the shunting locomotive is in a low handle position, the four-quadrant rectification module works in a PWM rectification mode, and the four-quadrant rectification module controls to output constant current to charge the power battery until the SOC of the power battery is higher than 95%, and the diesel generator set stops working.
According to a preferred embodiment, when the shunting locomotive control system is in a ground charging mode, the industrial generator set charges the power battery through the four-quadrant rectification module, the four-quadrant rectification module operates in a PWM rectification mode, and the four-quadrant rectification module controls to output constant current to charge the power battery.
The main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; and the utility model discloses also can the independent assortment between (each non-conflict selection) selection and between other choices. The technical solutions to be protected by the present invention, which are various combinations that can be known to those skilled in the art based on the prior art and the common general knowledge after understanding the present invention, are not exhaustive herein.
The utility model has the advantages that: the utility model provides a four-quadrant rectifier module has two kinds of mode, can regard as the PWM rectifier, can regard as the dc-to-ac converter again to simplified system configuration, be favorable to overhauing and maintaining. And a perfect software control strategy is adopted, so that perfect mixed operation of the diesel generating set and the power battery is realized.
Drawings
FIG. 1 is a system topology diagram of a shunting locomotive control system of the present invention;
FIG. 2 is a schematic diagram of the power logic on the power battery in the shunting locomotive control system of the present invention;
fig. 3 is a schematic diagram of the start logic of the diesel engine in the control system of the shunting locomotive of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship that the utility model is usually placed when using, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Additionally, the utility model discloses it is pointed out that, in the utility model, if do not write out structure, connection relation, positional relationship, power source relation etc. that concretely relates to very much, then the utility model relates to a structure, connection relation, positional relationship, power source relation etc. are technical personnel in the field on prior art's basis, can not learn through creative work.
Example 1:
referring to fig. 1, the utility model discloses a hybrid shunting locomotive control system based on four-quadrant rectification. The shunting locomotive control system comprises: the system comprises a power battery, a diesel generating set, an industrial generating set, a four-quadrant rectifier module, a pre-charging module, a traction motor and a locomotive auxiliary system. The industrial generator set includes, but is not limited to, a hydroelectric generator set, a wind turbine generator set, a thermal power generator set and the like.
Preferably, the power battery is electrically connected with the traction motor through a pre-charging module. The diesel generator set is respectively connected with the pre-charging module and the power battery through the four-quadrant rectification module and is electrically connected with the traction motor through the pre-charging module. And supplying power to the traction motor through the power battery and/or the diesel generator set.
Preferably, the industrial generator set is respectively connected with the power battery and the traction motor through the four-quadrant rectification module.
Preferably, the power battery is connected with the locomotive auxiliary system through the four-quadrant rectification module to supply power to the locomotive auxiliary system.
Preferably, the diesel generator set and the industrial generator set are connected with the locomotive auxiliary system to supply power to the locomotive auxiliary system.
Preferably, the locomotive auxiliary system includes at least a traction motor ventilator and an air conditioning/utility power unit.
The shunting locomotive control system adopts a four-quadrant rectification module to boost the electricity generated by an industrial general generator set and a diesel generator set and then independently supply power to a traction circuit or supply power to the traction circuit together with a power battery; when the industrial generator set and the diesel generator set do not work, the four-quadrant rectification module is used as an inverter to output 380V/50Hz alternating current, and the alternating current is supplied to an auxiliary system for power consumption after being subjected to sine wave filtering. Namely, the four-quadrant rectifier module has two working modes, can be used as a PWM rectifier and an inverter, simplifies system configuration and is beneficial to overhaul and maintenance.
Preferably, when the shunting locomotive control system is in a pure electric working condition, the power battery supplies power to the traction motor, and meanwhile, the power battery supplies power to the auxiliary system through the four-quadrant rectification module.
Further, when the shunting locomotive control system is in a pure electric working condition, the four-quadrant rectification module works in an inversion mode, outputs 380V/50Hz alternating current as an inverter, and supplies power to an auxiliary system after sine wave filtering.
Preferably, under the pure electric working condition, the power battery directly supplies power to the traction loop or the traction motor, the power is supplied to the traction inverter during traction, the locomotive control unit gives torque according to the position of the handle of the locomotive, and the frequency converter controls the torque of the motor. During regenerative braking, the locomotive control unit gives the braking power of the traction inverter according to the position of the locomotive handle, and limits the regenerative braking current through controlling the power.
Preferably, the lowest available SOC of the power battery under the pure electric working condition is limited to 15%. Meanwhile, the locomotive control unit controls the four-quadrant rectification module to work in an inversion mode, the four-quadrant rectification module serves as an inverter to output 380V/50Hz alternating current, and the alternating current is supplied to an auxiliary system for power consumption after being filtered by sine waves.
Preferably, as shown with reference to fig. 2. Power battery power-on logic: after the control power supply is powered on, the locomotive sends a wake-up signal to the BMS system under the condition that the locomotive control unit normally works, and the BMS management system starts to work. When the key switch is turned on, the locomotive control unit receives a master control key switch signal, the locomotive control unit system outputs a power-on signal to the BMS system, and the BMS management system closes the high-voltage box contactor. When the locomotive control unit monitors a BMS system high-voltage box contactor closing signal, the locomotive control unit controls a power battery pre-charging contactor to be closed, a power battery charges a middle direct current loop capacitor through a pre-charging resistor, when the middle direct current loop voltage is larger than 480V, a discharging contactor is switched on, and the power battery starts to supply power to a middle direct current loop, so that power supply to a traction motor is realized.
Furthermore, during the power battery power-on process, the locomotive control unit detects whether the relevant system has a fault with an upper voltage influence. The locomotive control unit is communicated with the BMS, the BMS sends self-checking state data, if the fault data of the upper high voltage is not influenced, the relevant system of the locomotive control unit also does not influence the existence of the fault of the upper high voltage, and the locomotive control unit sends a signal of the upper high voltage to the BMS. The locomotive control unit detects whether a fault of high voltage needing to be cut off exists in a related system, and the locomotive control unit and the BMS communication receiving BMS system detect whether a fault of high voltage needing to be cut off exists. If a fault needing to lower the high voltage exists, the locomotive control unit firstly controls the locomotive to unload, stops the work of discharging or charging the power battery, and cancels the 'high voltage signal' after the relevant contactor is disconnected.
Preferably, when the shunting locomotive control system is in a pure diesel working condition, the power battery is disconnected with the pre-charging module, and the diesel generator set supplies power to the traction motor through the four-quadrant rectification module. And the pure diesel oil working condition prohibits the regenerative braking.
Further, when the shunting locomotive control system is in a pure diesel oil working condition, the four-quadrant rectification module works in a PWM rectification mode and outputs constant DC608V direct-current voltage.
Preferably as shown in fig. 3. When the shunting locomotive control system is in a mixed working condition. When the shunting locomotive is in a low handle position, for example, the handle position is lower than 5. The power battery preferentially supplies power to the traction motor, when the SOC of the power battery is lower than 30%, the diesel generator set is started to supply power to the traction motor, and the residual power of the diesel generator set charges the power battery under the condition that the traction power requirement is met. When the shunting locomotive is in the high handle position, for example, the handle position is higher than 5. And starting the diesel generator, and controlling the output of the four-quadrant rectification module to realize the mixing of the diesel generator set and the power battery to supply power to the traction motor. Wherein, high handle position and low handle position refer to the driver's controller's that the driver operates high gear and low gear position, and high handle position means the locomotive is accelerating.
Further, when the shunting locomotive control system is in a mixed working condition and the shunting locomotive is in a low handle position, the four-quadrant rectification module works in a PWM rectification mode, the four-quadrant rectification module controls to output constant current to charge the power battery, and the diesel generator set stops working until the SOC of the power battery is higher than 95%.
Preferably, when the shunting locomotive control system is in a ground charging mode, the industrial generator set charges the power battery through the four-quadrant rectification module, the four-quadrant rectification module works in a PWM rectification mode, and the four-quadrant rectification module controls to output a constant current to charge the power battery.
The utility model provides a four-quadrant rectifier module has two kinds of mode, can regard as the PWM rectifier, can regard as the dc-to-ac converter again to simplified system configuration, be favorable to overhauing and maintaining. And a perfect software control strategy is adopted, so that perfect mixed operation of the diesel generating set and the power battery is realized.
The aforesaid the utility model discloses basic embodiment and each further alternative can the independent assortment in order to form a plurality of embodiments, is the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will. Numerous combinations will be known to those skilled in the art.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A hybrid shunting locomotive control system based on four-quadrant rectification, characterized in that the shunting locomotive control system at least comprises: the system comprises a power battery, a diesel generator set, a four-quadrant rectification module, a pre-charging module and a traction motor;
the power battery is electrically connected with the traction motor through a pre-charging module;
the diesel generator set is respectively connected with a pre-charging module and a power battery through the four-quadrant rectification module and is electrically connected with a traction motor through the pre-charging module;
and supplying power to the traction motor through the power battery and/or the diesel generator set.
2. The control system of claim 1, further comprising an industrial generator set, wherein the industrial generator set is connected to the power battery and the traction motor via the four-quadrant rectification module.
3. The hybrid shunting locomotive control system based on four-quadrant rectification of claim 2, wherein the shunting locomotive control system further comprises a locomotive auxiliary system,
the power battery is connected with the locomotive auxiliary system through the four-quadrant rectification module to supply power to the locomotive auxiliary system;
the diesel generator set and the industrial generator set are connected with the locomotive auxiliary system to supply power to the locomotive auxiliary system;
the locomotive auxiliary system includes at least a traction motor ventilator and an air conditioning/life power unit.
4. The hybrid shunting locomotive control system based on four-quadrant rectification of claim 3, wherein when the shunting locomotive control system is in a pure electric operating condition, the traction motor is powered by the power battery, and the power battery simultaneously powers an auxiliary system through the four-quadrant rectification module.
5. The hybrid shunting locomotive control system based on four-quadrant rectification of claim 4, wherein when the shunting locomotive control system is in a pure electric operating condition, the four-quadrant rectification module operates in an inversion mode, and the four-quadrant rectification module is used as an inverter to output 380V/50Hz alternating current, and the alternating current is supplied to an auxiliary system for power consumption after being subjected to sine wave filtering.
6. The control system of claim 4, wherein the power battery is disconnected from the pre-charge module when the locomotive control system is in a pure diesel condition, and the diesel generator set supplies power to the traction motor via the four-quadrant rectification module.
7. The control system of claim 6, wherein the four-quadrant rectification module operates in a PWM rectification mode and outputs a constant DC608V DC voltage when the locomotive control system is in a pure diesel condition.
8. The control system of claim 6, wherein when the locomotive control system is in a hybrid mode,
when the shunting locomotive is at a low handle position, the power battery preferentially supplies power to the traction motor, when the SOC of the power battery is lower than 30%, the diesel generator set is started to supply power to the traction motor, and the residual power of the diesel generator set charges the power battery under the condition of meeting the traction power requirement;
when the shunting locomotive is at a high handle position, the diesel generator is started, and the output of the four-quadrant rectification module is controlled to realize the mixing of the diesel generator set and the power battery to supply power to the traction motor.
9. The control system of claim 8, wherein when the locomotive control system is in a hybrid mode and the locomotive is in a low handle position,
the four-quadrant rectification module works in a PWM rectification mode, the four-quadrant rectification module controls output constant current to charge the power battery, and the diesel engine generator set stops working until the SOC of the power battery is higher than 95%.
10. The control system of claim 8, wherein the power battery is charged by the industrial genset via the four quadrant rectification module when the shunting locomotive control system is in a ground charging mode,
and the four-quadrant rectification module works in a PWM rectification mode, and the four-quadrant rectification module controls output constant current to charge the power battery.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113291329A (en) * | 2021-06-11 | 2021-08-24 | 中车大连机车研究所有限公司 | Hybrid power mechanical transmission system for industrial and mining railway shunting locomotive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113291329A (en) * | 2021-06-11 | 2021-08-24 | 中车大连机车研究所有限公司 | Hybrid power mechanical transmission system for industrial and mining railway shunting locomotive |
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