New energy locomotive low energy consumption control system and method

Abstract

The application provides a new energy locomotive low-energy consumption control system and method, and the method comprises the following steps: selecting the maximum value of the handle position condition frequency, the main transformer oil temperature condition frequency, the main transformer cabinet oil temperature condition frequency and the motor temperature condition frequency as the operation frequency. According to the comprehensive logical judgment of the handle position, the main transformer oil temperature, the main transformer cabinet water temperature and the traction motor temperature, the optimal operation frequency is issued to the auxiliary control unit, so that the auxiliary control unit works according to the optimal frequency in an intelligent and efficient manner.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and more particularly to a low-energy consumption control system and method for new energy locomotives. Background Technology

[0002] With the urgent global demand for a transition to green and environmentally friendly energy industries, new energy locomotives have become a new development trend in the future rail transit industry. Pure battery-powered locomotives mainly consist of a network control system, a battery management system, a traction system, and auxiliary systems. The auxiliary system includes two auxiliary control units, which control the auxiliary converter to operate at fixed or variable frequencies, supplying power to the onboard fans, compressors, pumps, and auxiliary facilities. The central control unit (CCU) of the network control system communicates with the auxiliary control units (ACU) via Ethernet. Based on the locomotive's status and relevant temperature, the CCU issues the current maximum permissible operating frequency to the ACU.

[0003] Currently, the auxiliary operating frequency of locomotives used on domestic lines is generally set and controlled according to winter / summer modes. Within a certain temperature range, the maximum allowable auxiliary operating frequency is set according to the winter / summer mode. This method is applicable to most sections of my country, but for special sections where the temperature does not change much with the seasons, it will cause the auxiliary operating frequency to be too high, wasting energy. Furthermore, it is not suitable for the operating environments of some tropical countries. In addition, for long lines, locomotives frequently stop at intermediate stations, during which time the auxiliary system will still output at the current maximum operating frequency, resulting in serious energy waste.

[0004] In view of this, the present invention provides a low-energy consumption control system and method for new energy locomotives. Summary of the Invention

[0005] To address the aforementioned issue of wasted auxiliary energy, this invention provides a low-energy-consumption control system and method for new energy locomotives. The invention primarily uses a comprehensive logical judgment based on factors such as handle position, main transformer oil temperature, main converter cabinet water temperature, and traction motor temperature to issue the optimal operating frequency to the auxiliary control unit.

[0006] The technical means employed in this invention are as follows:

[0007] This invention provides a low-energy consumption control system for new energy locomotives, comprising:

[0008] switch;

[0009] The central control unit is connected to the switch;

[0010] The first remote input / output unit is connected to the switch;

[0011] The first driver terminal includes a second remote input / output unit, which is connected to the switch.

[0012] The second driver's end includes a third remote input / output unit, which is connected to the switch;

[0013] A first temperature unit is configured corresponding to the first driver's end, and the first temperature unit is connected to the switch;

[0014] A second temperature unit is provided corresponding to the second driver end, and the second temperature unit is connected to the switch;

[0015] A first auxiliary control unit is configured corresponding to the first driver's terminal, and the first auxiliary control unit is connected to the switch;

[0016] The second auxiliary control unit is configured corresponding to the second driver's terminal, and the second auxiliary control unit is connected to the switch.

[0017] Furthermore, the switch includes a first switch and a second switch connected to each other;

[0018] The central control unit is connected to the first switch, the first remote input / output unit is connected to the first switch, the second remote input / output unit is connected to the first switch, the third remote input / output unit is connected to the second switch, the first temperature unit is connected to the first switch, the second temperature unit is connected to the second switch, the first auxiliary control unit is connected to the first switch, and the second auxiliary control unit is connected to the second switch.

[0019] Furthermore, the first driver terminal also includes a first display screen unit connected to the switch, and the second driver terminal also includes a second display screen unit connected to the switch.

[0020] Furthermore, it also includes:

[0021] The data recording unit is connected to the switch.

[0022] On the other hand, the present invention also provides a low-energy consumption control method for new energy locomotives, applied to the low-energy consumption control system for new energy locomotives as described in any one of claims 1-4, comprising:

[0023] Activate the first driver terminal or the second driver terminal;

[0024] When the central control unit receives a signal from the activated second remote input / output unit of the first driver's end or a signal from the activated third remote input / output unit of the second driver's end that is in a non-zero position, the auxiliary converter starts working and controls the activated first auxiliary control unit of the first driver's end or the activated second auxiliary control unit of the second driver's end to operate. The operating frequency is obtained as follows:

[0025] The central control unit obtains the handle position condition frequency based on the signal from the first remote input / output unit;

[0026] The central control unit obtains the main transformer oil temperature condition frequency based on the signals from the first temperature unit and the second temperature unit.

[0027] The central control unit obtains the main converter cabinet oil temperature condition frequency based on the signals from the first auxiliary control unit and the second auxiliary control unit.

[0028] The central control unit obtains the motor temperature condition frequency based on the signals from the first temperature unit and the second temperature unit.

[0029] The maximum value of the handle position condition frequency, the main transformer oil temperature condition frequency, the main converter cabinet oil temperature condition frequency, and the motor temperature condition frequency is selected as the operating frequency.

[0030] Further, the central control unit obtains the handle position condition frequency based on the signal from the first remote input / output unit, including:

[0031] The signal of the first remote input / output unit is a driver-level analog signal. The driver-level analog signal is converted into a level value. When the level value is ≤3, the handle position condition frequency is 25Hz; when 3 < the level value is ≤5, the handle position condition frequency is 40Hz; when the level value is >5, the handle position condition frequency is 50Hz.

[0032] Further, the central control unit obtains the main transformer oil temperature condition frequency based on the signals from the first temperature unit and the second temperature unit, including:

[0033] The signal of the first temperature unit includes the first main transformer oil temperature, and the signal of the second temperature unit includes the second main transformer oil temperature. The maximum value of the first main transformer oil temperature and the second main transformer oil temperature is selected as the main transformer oil temperature.

[0034] When the main transformer oil temperature is <40℃, the main transformer oil temperature condition frequency is 0Hz; when the main transformer oil temperature is >50℃, the main transformer oil temperature condition frequency is 40Hz; when the main transformer oil temperature is >70℃, the main transformer oil temperature condition frequency is 50Hz.

[0035] Further, the central control unit obtains the main converter cabinet oil temperature condition frequency based on the signals from the first auxiliary control unit and the second auxiliary control unit, including:

[0036] The signal of the first auxiliary control unit includes the water temperature of the first main converter cabinet, and the signal of the second auxiliary control unit includes the water temperature of the second main converter cabinet. The maximum value of the water temperature of the first main converter cabinet and the water temperature of the second main converter cabinet is selected as the water temperature of the main converter cabinet.

[0037] When the water temperature of the main converter cabinet is <70℃, the oil temperature condition frequency of the main converter cabinet is 0Hz; when the water temperature of the main converter cabinet is >80℃, the oil temperature condition frequency of the main converter cabinet is 40Hz; when the water temperature of the main converter cabinet is >150℃, the oil temperature condition frequency of the main converter cabinet is 50Hz.

[0038] Further, the central control unit obtains the motor temperature condition frequency based on the signals from the first temperature unit and the second temperature unit, including:

[0039] The signals from the first temperature unit and the second temperature unit include the motor temperatures of the six axes, and the highest motor temperature is selected.

[0040] When the maximum motor temperature is <70℃, the motor temperature condition frequency is 0Hz; when the maximum motor temperature is >80℃, the motor temperature condition frequency is 40Hz; when the maximum motor temperature is >150℃, the motor temperature condition frequency is 50Hz.

[0041] Compared with the prior art, the present invention has the following advantages:

[0042] The new energy locomotive low-energy consumption control system and method provided by this invention makes a comprehensive logical judgment based on factors such as handle position, main transformer oil temperature, main converter cabinet water temperature, and traction motor temperature, and issues the optimal operating frequency to the auxiliary control unit. This intelligently and efficiently controls the auxiliary control unit to work at the optimal frequency, making it suitable for various countries and regions and any operating conditions, thus significantly reducing energy consumption. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of a low-energy consumption control system for new energy locomotives provided by the present invention.

[0045] In the diagram: 1. Switch; 2. Central control unit; 3. First remote input / output unit; 4. First driver terminal; 5. Second remote input / output unit; 6. Second driver terminal; 7. Third remote input / output unit; 8. First temperature unit; 9. Second temperature unit; 10. First auxiliary control unit; 11. Second auxiliary control unit; 12. First switch; 13. Second switch; 14. First display screen unit; 15. Second display screen unit; 16. Data recording unit. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] Combination Figure 1 , Figure 1 This is a schematic diagram illustrating a structure of the low-energy consumption control system for new energy locomotives provided by the present invention, to illustrate a specific embodiment of the low-energy consumption control system for new energy locomotives provided by the present invention, including:

[0049] Switch 1;

[0050] Central control unit 2 is connected to switch 1;

[0051] The first remote input / output unit 3 is connected to the switch 1;

[0052] The first driver terminal 4 includes a second remote input / output unit 5, which is connected to the switch 1.

[0053] The second driver terminal 6 includes a third remote input / output unit 7, which is connected to the switch 1.

[0054] The first temperature unit 8 is set in correspondence with the first driver end 4, and the first temperature unit 8 is connected to the switch 1;

[0055] The second temperature unit 9 is configured corresponding to the second driver end 6, and the second temperature unit 9 is connected to the switch 1;

[0056] The first auxiliary control unit 10 is configured corresponding to the first driver terminal 4, and the first auxiliary control unit 10 is connected to the switch 1;

[0057] The second auxiliary control unit 11 is configured corresponding to the second driver end 6, and the second auxiliary control unit 11 is connected to the switch 1.

[0058] In some alternative embodiments, reference continues to be made to... Figure 1 Switch 1 includes a first switch 12 and a second switch 13 connected to each other;

[0059] The central control unit 2 is connected to the first switch 12, the first remote input / output unit 3 is connected to the first switch 12, the second remote input / output unit 5 is connected to the first switch 12, the third remote input / output unit 7 is connected to the second switch 13, the first temperature unit 8 is connected to the first switch 12, the second temperature unit 9 is connected to the second switch 13, the first auxiliary control unit 10 is connected to the first switch 12, and the second auxiliary control unit 11 is connected to the second switch 13.

[0060] In some alternative embodiments, reference continues to be made to... Figure 1 The first driver terminal 4 also includes a first display unit 14, which is connected to the switch 1. The second driver terminal 6 also includes a second display unit 15, which is connected to the switch 1.

[0061] In some alternative embodiments, reference continues to be made to... Figure 1 The new energy locomotive low energy consumption control system provided by the present invention also includes: a data recording unit 16, which is connected to the switch 1.

[0062] The present invention also provides a connection method for the low-energy consumption control system of new energy locomotives, which is Ethernet connection, but of course, it is not limited to this.

[0063] Based on the same inventive concept, the present invention also provides a low-energy consumption control method for new energy locomotives, which is applied to the low-energy consumption control system for new energy locomotives in any of the above embodiments, including:

[0064] Activate the first driver terminal or the second driver terminal;

[0065] When the central control unit receives a signal from the activated second remote input / output unit of the first driver's end or the activated third remote input / output unit of the second driver's end in a non-zero position, the auxiliary converter starts working and controls the operation of the activated first auxiliary control unit of the first driver's end or the second auxiliary control unit of the second driver's end. The operating frequency is obtained as follows:

[0066] The central control unit obtains the handle position condition frequency based on the signal from the first remote input / output unit;

[0067] The central control unit obtains the main transformer oil temperature condition frequency based on the signals from the first temperature unit and the second temperature unit.

[0068] The central control unit obtains the oil temperature condition frequency of the main converter cabinet based on the signals from the first auxiliary control unit and the second auxiliary control unit.

[0069] The central control unit obtains the motor temperature condition frequency based on the signals from the first temperature unit and the second temperature unit.

[0070] The maximum value of the handle position condition frequency, the main transformer oil temperature condition frequency, the main converter cabinet oil temperature condition frequency, and the motor temperature condition frequency is selected as the operating frequency.

[0071] Understandably, the auxiliary system package consists of an auxiliary converter system, a charger, an auxiliary load, an auxiliary control unit, and corresponding control circuits. Based on the comprehensive logic judgment of factors such as the handle position, main transformer oil temperature, main converter cabinet water temperature, and traction motor temperature, it issues the optimal operating frequency to the auxiliary control unit. The intelligent and efficient control of the auxiliary system ensures that it operates at the optimal frequency, making it suitable for various countries and regions and any operating conditions, thus significantly reducing energy consumption. The auxiliary control unit has a fixed frequency of 50Hz, while the variable frequency options are 0Hz, 25Hz, 40Hz, and 50Hz.

[0072] In some optional embodiments, the central control unit obtains the handle position condition frequency based on the signal from the first remote input / output unit, including:

[0073] The signal of the first remote input / output unit is the driver-level analog signal. The driver-level analog signal is converted into a level value. When the level value is ≤3, the handle position condition frequency is 25Hz; when 3 < level value ≤5, the handle position condition frequency is 40Hz; when the level value >5, the handle position condition frequency is 50Hz.

[0074] Specifically, when the level value is ≤3, the frequency of the handle position condition is set to 25Hz, and after the traction handle on the activated driver's side returns to 0, it continues to run for 1 minute; when 3 < level value ≤5, the frequency of the handle position condition is set to 40Hz, and after the traction handle on the activated driver's side returns to 0, it continues to run for 1 minute; when the level value is >5, the frequency of the handle position condition is set to 50Hz, and after the traction handle on the activated driver's side returns to 0, it continues to run for 1 minute.

[0075] In some optional embodiments, the central control unit obtains the main transformer oil temperature condition frequency based on the signals from the first temperature unit and the second temperature unit, including:

[0076] The signal of the first temperature unit includes the first main transformer oil temperature, and the signal of the second temperature unit includes the second main transformer oil temperature. The maximum value of the first main transformer oil temperature and the second main transformer oil temperature is selected as the main transformer oil temperature.

[0077] When the main transformer oil temperature is <40℃, the main transformer oil temperature condition frequency is 0Hz; when the main transformer oil temperature is >50℃, the main transformer oil temperature condition frequency is 40Hz; when the main transformer oil temperature is >70℃, the main transformer oil temperature condition frequency is 50Hz.

[0078] Specifically, when the main transformer oil temperature is <40℃, the main transformer oil temperature condition frequency is set to 0Hz; when the main transformer oil temperature is >50℃, the main transformer oil temperature condition frequency is set to 40Hz after 5 seconds; when the main transformer oil temperature is >70℃, the main transformer oil temperature condition frequency is set to 50Hz after 5 seconds.

[0079] In some optional embodiments, the central control unit obtains the main converter cabinet oil temperature condition frequency based on the signals from the first auxiliary control unit and the second auxiliary control unit, including:

[0080] The signal of the first auxiliary control unit includes the water temperature of the first main converter cabinet, and the signal of the second auxiliary control unit includes the water temperature of the second main converter cabinet. The maximum value of the water temperature of the first main converter cabinet and the water temperature of the second main converter cabinet is selected as the water temperature of the main converter cabinet.

[0081] When the main converter cabinet water temperature is <70℃, the main converter cabinet oil temperature condition frequency is 0Hz; when the main converter cabinet water temperature is >80℃, the main converter cabinet oil temperature condition frequency is 40Hz; when the main converter cabinet water temperature is >150℃, the main converter cabinet oil temperature condition frequency is 50Hz.

[0082] Specifically, when the main converter cabinet water temperature is <70℃, the main converter cabinet oil temperature condition frequency is 0Hz; when the main converter cabinet water temperature is >80℃, the main converter cabinet oil temperature condition frequency is set to 40Hz after 5 seconds; when the main converter cabinet water temperature is >150℃, the main converter cabinet oil temperature condition frequency is set to 50Hz after 5 seconds.

[0083] In some optional embodiments, the central control unit obtains the motor temperature condition frequency based on the signals from the first temperature unit and the second temperature unit, including:

[0084] The signals from the first temperature unit and the second temperature unit include the motor temperatures of the six axes; the highest motor temperature is selected.

[0085] When the maximum motor temperature is <70℃, the motor temperature condition frequency is 0Hz; when the maximum motor temperature is >80℃, the motor temperature condition frequency is 40Hz; when the maximum motor temperature is >150℃, the motor temperature condition frequency is 50Hz.

[0086] Specifically, when the maximum motor temperature is <70℃, the motor temperature condition frequency is 0Hz; when the maximum motor temperature is >80℃, the motor temperature condition frequency is set to 40Hz after 5 seconds; when the maximum motor temperature is >150℃, the motor temperature condition frequency is set to 50Hz after 5 seconds.

[0087] The low-energy consumption control system and method for new energy locomotives provided by this invention effectively solves the problem of ensuring locomotives operate normally with minimal energy consumption under different countries, regions, and operating conditions. On-site testing under full load showed that a single locomotive can save 476 kWh of electricity per month. If calculated based on 100 locomotives, this translates to annual savings of 571,200 kWh, approximately 450,000 yuan, demonstrating a significant energy-saving effect.

[0088] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0089] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-energy consumption control system for new energy locomotives, characterized in that, include: switch; The central control unit is connected to the switch; The first remote input / output unit is connected to the switch; The first driver terminal includes a second remote input / output unit, which is connected to the switch. The second driver's end includes a third remote input / output unit, which is connected to the switch; A first temperature unit is configured corresponding to the first driver's end, and the first temperature unit is connected to the switch; A second temperature unit is provided corresponding to the second driver end, and the second temperature unit is connected to the switch; A first auxiliary control unit is configured corresponding to the first driver's terminal, and the first auxiliary control unit is connected to the switch; A second auxiliary control unit is configured corresponding to the second driver's terminal, and the second auxiliary control unit is connected to the switch; When the central control unit receives a signal from the activated second remote input / output unit of the first driver's end or the activated third remote input / output unit of the second driver's end in a non-zero position, the auxiliary converter starts working and controls the operation of the activated first auxiliary control unit of the first driver's end or the second auxiliary control unit of the second driver's end. The operating frequency is obtained as follows: The central control unit obtains the handle position condition frequency based on the signal from the first remote input / output unit; the signal from the first remote input / output unit is a driver-level analog signal. The central control unit obtains the main transformer oil temperature condition frequency based on the signals from the first temperature unit and the second temperature unit; the signal from the first temperature unit includes the first main transformer oil temperature, and the signal from the second temperature unit includes the second main transformer oil temperature. The central control unit obtains the main converter cabinet oil temperature condition frequency based on the signals from the first auxiliary control unit and the second auxiliary control unit; the signals from the first auxiliary control unit include the first main converter cabinet water temperature, and the signals from the second auxiliary control unit include the second main converter cabinet water temperature. The central control unit obtains the motor temperature condition frequency based on the signals from the first temperature unit and the second temperature unit; the signals from the first temperature unit and the second temperature unit include the motor temperature. The maximum value of the handle position condition frequency, the main transformer oil temperature condition frequency, the main converter cabinet oil temperature condition frequency, and the motor temperature condition frequency is selected as the operating frequency.

2. The low-energy consumption control system for new energy locomotives according to claim 1, characterized in that, The switch includes a first switch and a second switch connected to each other; The central control unit is connected to the first switch, the first remote input / output unit is connected to the first switch, the second remote input / output unit is connected to the first switch, the third remote input / output unit is connected to the second switch, the first temperature unit is connected to the first switch, the second temperature unit is connected to the second switch, the first auxiliary control unit is connected to the first switch, and the second auxiliary control unit is connected to the second switch.

3. The low-energy consumption control system for new energy locomotives according to claim 1, characterized in that, The first driver terminal also includes a first display screen unit, which is connected to the switch. The second driver terminal also includes a second display screen unit, which is connected to the switch.

4. The low-energy consumption control system for new energy locomotives according to claim 1, characterized in that, Also includes: The data recording unit is connected to the switch.

5. A low-energy consumption control method for new energy locomotives, characterized in that, The low-energy consumption control system for new energy locomotives applied to any one of claims 1-4 includes: Activate the first driver terminal or the second driver terminal; When the central control unit receives a signal from the activated second remote input / output unit of the first driver's end or a signal from the activated third remote input / output unit of the second driver's end that is in a non-zero position, the auxiliary converter starts working and controls the activated first auxiliary control unit of the first driver's end or the activated second auxiliary control unit of the second driver's end to operate. The operating frequency is obtained as follows: The central control unit obtains the handle position condition frequency based on the signal from the first remote input / output unit; The central control unit obtains the main transformer oil temperature condition frequency based on the signals from the first temperature unit and the second temperature unit. The central control unit obtains the main converter cabinet oil temperature condition frequency based on the signals from the first auxiliary control unit and the second auxiliary control unit. The central control unit obtains the motor temperature condition frequency based on the signals from the first temperature unit and the second temperature unit. The maximum value of the handle position condition frequency, the main transformer oil temperature condition frequency, the main converter cabinet oil temperature condition frequency, and the motor temperature condition frequency is selected as the operating frequency.

6. The low-energy consumption control method for new energy locomotives according to claim 5, characterized in that, The central control unit obtains the handle position condition frequency based on the signal from the first remote input / output unit, including: The signal of the first remote input / output unit is a driver-level analog signal. The driver-level analog signal is converted into a level value. When the level value is ≤3, the handle position condition frequency is 25Hz; when 3 < the level value is ≤5, the handle position condition frequency is 40Hz; when the level value is >5, the handle position condition frequency is 50Hz.

7. The low-energy consumption control method for new energy locomotives according to claim 5, characterized in that, The central control unit obtains the main transformer oil temperature condition frequency based on the signals from the first temperature unit and the second temperature unit, including: The signal of the first temperature unit includes the first main transformer oil temperature, and the signal of the second temperature unit includes the second main transformer oil temperature. The maximum value of the first main transformer oil temperature and the second main transformer oil temperature is selected as the main transformer oil temperature. When the main transformer oil temperature is <40℃, the main transformer oil temperature condition frequency is 0Hz; when the main transformer oil temperature is >50℃, the main transformer oil temperature condition frequency is 40Hz; when the main transformer oil temperature is >70℃, the main transformer oil temperature condition frequency is 50Hz.

8. The low-energy consumption control method for new energy locomotives according to claim 5, characterized in that, The central control unit obtains the main converter cabinet oil temperature condition frequency based on the signals from the first auxiliary control unit and the second auxiliary control unit, including: The signal of the first auxiliary control unit includes the water temperature of the first main converter cabinet, and the signal of the second auxiliary control unit includes the water temperature of the second main converter cabinet. The maximum value of the water temperature of the first main converter cabinet and the water temperature of the second main converter cabinet is selected as the water temperature of the main converter cabinet. When the water temperature of the main converter cabinet is <70℃, the oil temperature condition frequency of the main converter cabinet is 0Hz; when the water temperature of the main converter cabinet is >80℃, the oil temperature condition frequency of the main converter cabinet is 40Hz; when the water temperature of the main converter cabinet is >150℃, the oil temperature condition frequency of the main converter cabinet is 50Hz.

9. The low-energy consumption control method for new energy locomotives according to claim 5, characterized in that, The central control unit obtains the motor temperature condition frequency based on the signals from the first temperature unit and the second temperature unit, including: The signals from the first temperature unit and the second temperature unit include the motor temperatures of the six axes, and the highest motor temperature is selected. When the maximum motor temperature is <70℃, the motor temperature condition frequency is 0Hz; when the maximum motor temperature is >80℃, the motor temperature condition frequency is 40Hz; when the maximum motor temperature is >150℃, the motor temperature condition frequency is 50Hz.

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