KR-20260067502-A - SYSTEM AND METHOD FOR CONTROLLING THE AUXILIARY POWER SUPPLY FOR EQUALIZING THE REMAINING AMOUNT OF HYDROGEN IN A NUMBER OF HYDROGEN STORAGE TANKS MOUNTED ON A HYDROGEN RAILWAY VEHICLE AND COMPUTER PROGRAM FOR THE SAME

KR20260067502AKR 20260067502 AKR20260067502 AKR 20260067502AKR-20260067502-A

Abstract

The present invention relates to an auxiliary power device control system and method for equalizing the remaining amount of hydrogen in a hydrogen storage tank within a hydrogen railway vehicle, and a computer program for the same. It comprises a power control unit that is respectively placed in a plurality of hydrogen railway vehicles and connected to a hydrogen fuel cell of each hydrogen railway vehicle, a hydrogen storage tank that supplies hydrogen to the hydrogen fuel cell, and an auxiliary power device that receives power from the hydrogen fuel cell and drives a vehicle load. Based on the remaining amount of hydrogen in the hydrogen storage tank of another hydrogen railway vehicle connected to each other through extended power supply, the output power amount between the connected auxiliary power devices is adjusted to equalize the remaining amount of hydrogen in the connected hydrogen storage tanks.

Inventors

정신명
류준형
이준희
김의진
오용국

Assignees

한국철도기술연구원

Dates

Publication Date: 20260513
Application Date: 20241105

Claims (18)

A power control unit (110) is configured to be placed in each of a plurality of hydrogen railway vehicles and is connected to a hydrogen fuel cell of each hydrogen railway vehicle, a hydrogen storage tank that supplies hydrogen to the hydrogen fuel cell, and an auxiliary power supply unit that receives power from the hydrogen fuel cell and drives a vehicle load. The above power control unit (110) is, A method of equalizing the remaining hydrogen amount in the interconnected hydrogen storage tanks by adjusting the output power amount between interconnected auxiliary power units based on the remaining hydrogen amount in the hydrogen storage tanks of other hydrogen railway vehicles interconnected through extended power dispatch. Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
In paragraph 1, The above power control unit (110) is, A battery connected to the above hydrogen fuel cell and a propulsion control device, additionally connected to monitor the output power of the battery and the output power to a load connected to the propulsion control device. Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
In paragraph 2, The above power control unit (110) is, A system to which either a TCMS (Train Control and Monitoring System) or an Energy Management System (EMS) is applied Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
In paragraph 3, The above power control unit (110) is, Monitoring the operating status of the above hydrogen fuel cell, the above hydrogen storage tank, the above battery, the above propulsion control device, and the above auxiliary power device in real time. Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
In paragraph 4, The above power control unit (110) is, The output power amount between auxiliary power devices connected to each other is shared based on wired/wireless network communication with the power control unit (110) deployed in other hydrogen railway vehicles. Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
In paragraph 5, The above power control unit (110) is, Based on the results of monitoring the power generation of the hydrogen fuel cell, the remaining hydrogen amount in the hydrogen storage tank, and the SOC status of the battery for each interconnected hydrogen railway vehicle, If it is determined that there is a difference in the remaining hydrogen amount between each hydrogen storage tank, the output power of the auxiliary power unit using a smaller amount of hydrogen is reduced, and the output power of the auxiliary power unit using a larger amount of hydrogen is increased in proportion to the reduced output power. Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
In paragraph 6, The above power control unit (110) is, Based on the results of monitoring the power generation of the hydrogen fuel cell, the remaining hydrogen amount in the hydrogen storage tank, and the SOC status of the battery for each interconnected hydrogen railway vehicle, If it is determined that there is a difference in the amount of remaining hydrogen between each hydrogen storage tank, the output power of the auxiliary power unit on the side of the hydrogen storage tank with less remaining hydrogen is reduced, and the output power of the auxiliary power unit on the side of the hydrogen storage tank with more remaining hydrogen is increased in proportion to the reduced output power. Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
In Paragraph 7, The above power control unit (110) is, The method of adjusting the output power between interconnected auxiliary power supplies while ensuring that the total amount of power output through the interconnected auxiliary power supplies remains constant. Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
A power control unit, each disposed of in a plurality of hydrogen railway vehicles and connected to a hydrogen fuel cell of each hydrogen railway vehicle, a hydrogen storage tank supplying hydrogen to the hydrogen fuel cell, and an auxiliary power unit that receives power from the hydrogen fuel cell and drives a vehicle load, comprising the step of equalizing the amount of remaining hydrogen in the connected hydrogen storage tanks by adjusting the amount of output power between the connected auxiliary power units based on the amount of remaining hydrogen in the hydrogen storage tanks of other hydrogen railway vehicles connected to each other through extended power supply. Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
In Paragraph 9, The step of equalizing the amount of remaining hydrogen in the interconnected hydrogen storage tanks is, A step comprising: monitoring the output power of the battery and the output power to the load connected to the propulsion control device in the power control unit additionally connected to the battery and the propulsion control device connected to the hydrogen fuel cell; Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
In Paragraph 10, The above power control unit is one to which either a TCMS (Train Control and Monitoring System) or an Energy Management System (EMS) is applied. Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
In Paragraph 11, The step of equalizing the amount of remaining hydrogen in the interconnected hydrogen storage tanks is, The method further comprises the step of monitoring the operating status of the hydrogen fuel cell, the hydrogen storage tank, the battery, the propulsion control device, and the auxiliary power supply device in real time in the power control unit. Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
In Paragraph 12, The step of equalizing the amount of remaining hydrogen in the interconnected hydrogen storage tanks is, The method further comprises the step of sharing the output power amount between interconnected auxiliary power devices based on wired/wireless network communication with a power control unit deployed in another hydrogen railway vehicle from the power control unit above. Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
In Paragraph 13, The step of equalizing the amount of remaining hydrogen in the interconnected hydrogen storage tanks is, The method further comprises the step of, based on the results of monitoring the power generation amount of a hydrogen fuel cell, the remaining hydrogen amount of a hydrogen storage tank, and the SOC status of a battery for each of the interconnected hydrogen railway vehicles in the power control unit, if it is determined that there is a difference in the remaining hydrogen amount between each hydrogen storage tank, reducing the output power of an auxiliary power unit using a smaller amount of hydrogen and increasing the output power of an auxiliary power unit using a larger amount of hydrogen in proportion to the reduced output power. Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
In Paragraph 14, The step of equalizing the amount of remaining hydrogen in the interconnected hydrogen storage tanks is, Based on the results of monitoring the power generation amount of the hydrogen fuel cell, the remaining hydrogen amount in the hydrogen storage tank, and the SOC status of the battery for each of the interconnected hydrogen railway vehicles in the above power control unit, If it is determined that there is a difference in the amount of remaining hydrogen between each hydrogen storage tank, the method further comprises the step of reducing the output power of the auxiliary power unit on the side of the hydrogen storage tank with less remaining hydrogen, and increasing the output power of the auxiliary power unit on the side of the hydrogen storage tank with more remaining hydrogen in proportion to the reduced output power. Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
In paragraph 15, The step of equalizing the amount of remaining hydrogen in the interconnected hydrogen storage tanks is, The method further comprises the step of adjusting the output power amount between interconnected auxiliary power supply units in the power control unit above, while ensuring that the total amount of power output through the interconnected auxiliary power supply units is maintained constant. Method for controlling an auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle.
A hydrogen storage tank (210) for storing hydrogen, which is arranged for each of the multiple hydrogen railway vehicles; A hydrogen fuel cell (220) connected to the above hydrogen storage tank (210) to receive hydrogen and produce electricity; A battery (230) connected to the above hydrogen fuel cell (220) to receive power; A propulsion control device (240) that is connected to the above hydrogen fuel cell (220) to receive power and supplies power to a connected traction motor; An auxiliary power supply unit (250) that is connected to the above hydrogen fuel cell (220) to receive power and supplies power to the connected vehicle load; Extended power supply (260) for sharing power by connecting to the auxiliary power supply unit (250) of another hydrogen railway vehicle; and It includes a power control unit (270) connected to the above hydrogen storage tank (210), the above hydrogen fuel cell (220), the above battery (230), the above propulsion control device (240), and the above auxiliary power device (250); The above power control unit (270) is, Based on the amount of hydrogen remaining in the hydrogen storage tank (210) of another hydrogen railway vehicle connected to each other through the above extended power supply (260), the amount of output power between the connected auxiliary power supply units (250) is adjusted to equalize the amount of hydrogen remaining in the connected hydrogen storage tank (210). Auxiliary power supply control system for equalizing the remaining hydrogen in a hydrogen storage tank within a hydrogen railway vehicle.
A computer program stored on a computer-readable recording medium comprising a sequence of instructions for providing a control function for an auxiliary power supply unit for equalizing the remaining amount of hydrogen in a hydrogen storage tank within a hydrogen railway vehicle, When the above computer program is executed by a computing device, A sequence of instructions including a hydrogen fuel cell of each hydrogen railway vehicle, a hydrogen storage tank supplying hydrogen to the hydrogen fuel cell, and an auxiliary power unit connected to the hydrogen fuel cell to drive a vehicle load, wherein the output power between the connected auxiliary power units is adjusted based on the amount of remaining hydrogen in the hydrogen storage tanks of other hydrogen railway vehicles connected to each other through extended power supply to equalize the amount of remaining hydrogen in the connected hydrogen storage tanks. Computer program.

Description

System and method for controlling the auxiliary power supply for equalizing the remaining amount of hydrogen in a hydrogen storage tank within a hydrogen railway vehicle, and a computer program for the same. The present invention relates to an auxiliary power device control system and method for equalizing the remaining amount of hydrogen in a hydrogen storage tank within a hydrogen railway vehicle, and a computer program for the same. More specifically, the invention relates to an auxiliary power device control system and method for equalizing the remaining amount of hydrogen in a hydrogen storage tank within a hydrogen railway vehicle and a computer program for the same, which allows the hydrogen railway vehicle to be operated more efficiently by adjusting the output power between connected auxiliary power devices based on the remaining amount of hydrogen within the connected hydrogen railway vehicle and equalizing the remaining amount of hydrogen within the connected hydrogen storage tanks, thereby efficiently controlling the amount of power supplied from the hydrogen fuel cell and actively controlling the amount of hydrogen consumed. Generally, hydrogen railway vehicles require power supply for in-vehicle heating and cooling systems, broadcasting equipment, doors, and motors for operation, and to this end, multiple hydrogen fuel cells are used as a power source. At this time, the power generated by the hydrogen fuel cell is supplied to the vehicle's major electrical components, such as the secondary battery, propulsion control unit, and auxiliary power unit, to enable the railway vehicle to operate smoothly, and for this purpose, hydrogen is supplied from a hydrogen storage tank. Depending on the amount of power used by the major electrical components, the hydrogen fuel cell adjusts the amount of hydrogen supplied to produce appropriate power, and as the amount of power consumed increases, the amount of hydrogen used also increases. Meanwhile, the auxiliary power supply unit of a hydrogen railway vehicle is a device that generates the power required inside the vehicle; two or more are used to supply power to localized parts of the vehicle and to prepare for failures. However, the operating conditions of the devices connected as loads (heating and cooling systems, broadcasting equipment, lighting, etc.) differ, and accordingly, the amount of power consumed by each auxiliary power supply unit varies. This results in differences in the amount of electricity generated by hydrogen fuel cells connected to auxiliary power units. Consequently, this leads to differences in the hydrogen consumption of the fuel cells, and over time, discrepancies in the remaining hydrogen in the storage tanks cause problems such as reduced driving range and the inability to operate continuously, making it difficult to achieve efficient operation of hydrogen railway vehicles. In particular, in the case of conventional hydrogen railway vehicles, the power supplied by hydrogen fuel cells can vary depending on the vehicle's operating conditions. For example, the vehicle loads connected to the auxiliary power supply are devices necessary for vehicle operation, such as air conditioners, heaters, lights, and compressors; however, since the connected devices are not uniform across different zones, the amount of power consumed also varies. As a result, there are differences in the amount of electricity produced by hydrogen fuel cells, and since hydrogen consumption varies accordingly, differences may occur during operation even if the same amount of hydrogen is initially charged. Ultimately, if the vehicle continues to operate without recharging the hydrogen, one system may eventually run out of hydrogen and cease operation, leading to a problem where stable operation is not possible. Figure 1 is a conceptual diagram showing the power supply system of a conventional hydrogen railway vehicle. FIG. 2 is a schematic diagram showing the configuration of an auxiliary power supply control system (100) for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle according to one embodiment of the present invention. Figure 3 is a conceptual diagram illustrating the process of adjusting the output power between connected auxiliary power devices in the power control unit (110) when the remaining hydrogen amount between connected hydrogen storage tanks is similar. FIG. 4 is a conceptual diagram illustrating the process of adjusting the output power amount between connected auxiliary power devices in the power control unit (110) when a difference in the remaining amount of hydrogen occurs between connected hydrogen storage tanks. FIG. 5 is a schematic diagram showing the configuration of an auxiliary power supply control system (200) for equalizing the remaining amount of hydrogen in a hydrogen storage tank in a hydrogen railway vehicle according to another embodiment of the present invention. Hereinafter, s