Mobile power van with medium and low voltage double motors

Abstract

The invention discloses a mobile power van with medium and low voltage double motors. The mobile power van comprises a compartment body, a partition plate, a power generation system and a control system. The partition plate is arranged in the compartment body and divides the compartment body into a first mounting cavity and a second mounting cavity, and the power generation system and the control system are located in the first mounting cavity; the power generation system comprises a medium-voltage generator, a low-voltage generator and an engine, the medium-voltage generator and the low-voltage generator are located on the two sides of the engine respectively, and the engine is connected with the medium-voltage generator and the low-voltage generator. The control system comprises a controller, a communication unit, a control panel and a sensor unit, the controller is electrically connected with the power generation system, the communication unit, the control panel and the sensor unit, and the sensor unit is connected with the medium-voltage generator, the low-voltage generator and the engine. According to the invention, the controller controls the medium-voltage generator and the low-voltage generator to be started simultaneously or separately according to actual requirements, so that intelligence and high reliability of dual-motor cooperative control are embodied.

Description

Technical Field

[0001] This invention relates to the field of mobile power supply vehicle technology, and more specifically, to a mobile power supply vehicle equipped with medium and low voltage dual motors. Background Technology

[0002] Mobile power supply vehicles, as flexible emergency power supply equipment, are widely used in power system emergency repairs, power supply for large-scale events, natural disaster relief, petrochemicals, mining, and temporary power supply in remote areas. Traditional mobile power supply vehicles are usually equipped with generators of only a single voltage level, either low voltage (such as AC380V) or medium voltage (such as AC6kV or AC10kV). However, in many practical applications, there is often a simultaneous demand for both medium and low voltage power. For example, during urban power grid fault repairs, on the one hand, it is necessary to provide AC10kV power to important medium-voltage users (such as large medical equipment in hospitals, UPS inputs in data centers, etc.), and on the other hand, it is also necessary to provide AC380V / 220V low-voltage power to on-site lighting, small tools, office equipment, etc. In this case, if traditional single-voltage level mobile power supply vehicles are used, at least two vehicles, one providing medium voltage and the other low voltage, need to work together. This not only increases equipment procurement costs, transportation costs, and maintenance costs, but also occupies more space, complicates coordination and scheduling, and reduces the efficiency of emergency response.

[0003] Furthermore, some large construction sites or temporary camps may require both large machinery and equipment with medium-voltage power supply and living and office facilities with low-voltage power supply. Mobile power supply vehicles with a single voltage level cannot meet these diverse needs simultaneously.

[0004] Therefore, how to provide a mobile power supply vehicle with dual medium and low voltage motors has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a new technology solution for a mobile power supply vehicle equipped with dual medium and low voltage motors.

[0006] According to a first aspect of the present invention, a mobile power vehicle equipped with medium and low voltage dual motors is provided, comprising: a vehicle body, a partition, a power generation system, and a control system;

[0007] The partition is disposed inside the carriage body and divides the carriage body into a first mounting cavity and a second mounting cavity, wherein the power generation system and the control system are located in the first mounting cavity;

[0008] The power generation system includes a medium-voltage generator, a low-voltage generator, and an engine. The medium-voltage generator and the low-voltage generator are located on both sides of the engine, and the engine is connected to the medium-voltage generator and the low-voltage generator respectively.

[0009] The control system includes a controller, a communication unit, a control panel, and a sensor unit. The control panel is disposed on the inner wall of the first mounting cavity. The controller is electrically connected to the power generation system, the communication unit, the control panel, and the sensor unit. The sensor unit is connected to the medium-voltage generator, the low-voltage generator, and the engine. The controller is used to control the operation of the medium-voltage generator and the low-voltage generator.

[0010] Optionally, the power generation system further includes a power distribution box and a belt drive unit. The power distribution box is equipped with an electromagnetic clutch, which is connected to the controller, the medium-voltage generator, and the engine respectively. The belt drive unit is connected to the low-voltage generator and the engine respectively.

[0011] Optionally, the sensor unit includes a magnetoelectric speed sensor, a pressure sensor, a coolant temperature sensor, a liquid level sensor, a voltage transmitter, and a current transmitter. The magnetoelectric speed sensor, the pressure sensor, the coolant temperature sensor, and the liquid level sensor are mounted on the engine to detect the engine speed, pressure, coolant temperature, and diesel fuel level, respectively. The voltage transmitters are mounted on the medium-voltage generator and the low-voltage generator to detect the output voltage of the medium-voltage generator and the low-voltage generator, respectively.

[0012] Optionally, the inner wall of the first mounting cavity is made of a multi-layer steel plate sandwiched with sound-absorbing cotton. The carriage body is provided with an air inlet and an air outlet communicating with the first mounting cavity. The air inlet and the air outlet are respectively provided with an air inlet silencer and an air outlet silencer.

[0013] Optionally, the first mounting cavity is also equipped with LED lighting, emergency lighting, and a small maintenance tool cabinet.

[0014] Optionally, the mobile power vehicle equipped with medium and low voltage dual motors further includes a medium voltage power distribution unit and a low voltage power distribution unit. The medium voltage power distribution unit is connected to the medium voltage generator and the controller, and is used to provide power distribution, equipment protection, status monitoring and safety isolation for the medium voltage generator. The low voltage power distribution unit is connected to the low voltage generator and the controller, and is used to distribute and control power.

[0015] Optionally, the mobile power vehicle equipped with medium and low voltage dual motors further includes an actuator group, which includes an electronic speed governor and an excitation regulator. The electronic speed governor is connected to the engine, and the excitation regulator is connected to the medium voltage generator and the low voltage generator, respectively.

[0016] Optionally, the mobile power vehicle equipped with medium and low voltage dual motors further includes a fuel tank and a closed-loop water cooling system. The fuel tank and the closed-loop water cooling system are disposed in the second mounting cavity. The fuel tank is connected to the engine, and the closed-loop water cooling system is connected to the engine for cooling the engine.

[0017] Optionally, the mobile power vehicle equipped with medium and low voltage dual motors further includes a hydraulic support leg, which is disposed on the second mounting cavity, with the first end of the hydraulic support leg connected to the bottom of the oil tank and the second end of the hydraulic support leg penetrating through the second mounting cavity.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention divides the vehicle body into a first mounting cavity and a second mounting cavity using a partition plate. The power generation system and control system are located in the first mounting cavity. The high-voltage generator and low-voltage generator are located on either side of the engine. The engine is connected to the high-voltage generator and low-voltage generator respectively. The control panel is located on the inner wall of the first mounting cavity. The controller is electrically connected to the power generation system, communication unit, control panel, and sensor unit respectively. The sensor unit is connected to the high-voltage generator, low-voltage generator, and engine respectively. In use, the operator adjusts the output power of the high-voltage generator and low-voltage generator through the control panel. The controller can also control the high-voltage generator and low-voltage generator to start simultaneously or separately according to actual needs. The remote monitoring platform synchronously receives the dynamic adjustment records of the high-voltage generator, low-voltage generator, and engine through the communication unit, facilitating maintenance personnel to analyze the equipment's health status.

[0020] This invention can output power at two voltage levels simultaneously or output one voltage level separately according to actual needs, meeting the power needs of different loads. It reflects the intelligence and high reliability of dual-motor collaborative control. It can supply power to medium-voltage large-capacity equipment as well as low-voltage conventional equipment. It can be widely used in various scenarios such as power emergency repair, power supply for large-scale events, engineering construction, and field operations.

[0021] This invention can also meet the mixed voltage power supply requirements in complex scenarios, reduce the number of devices, simplify the scheduling process, and improve emergency response speed and power supply reliability.

[0022] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0024] Figure 1 This is a structural diagram of the mobile power supply vehicle equipped with medium and low voltage dual motors according to the present invention;

[0025] Figure 2 This is a top view of the mobile power supply vehicle equipped with medium and low voltage dual motors according to the present invention.

[0026] The diagram shows the following: 1. Carriage body; 11. First mounting cavity; 12. Second mounting cavity; 13. Hydraulic support leg; 14. Intake silencer; 15. Exhaust silencer; 16. Smoke exhaust silencer; 2. Partition plate; 3. Power generation system; 31. Medium-voltage generator; 32. Low-voltage generator; 33. Engine; 34. Power distribution box; 35. Belt drive unit; 4. Control system; 41. Control panel; 42. Sensor unit; 5. Medium-voltage power distribution unit; 6. Low-voltage power distribution unit; 7. Actuator assembly; 8. Oil tank; 9. Closed-loop circulating water cooling system. Detailed Implementation

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0030] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0031] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a mobile power vehicle equipped with medium and low voltage dual motors, including: a vehicle body 1, a partition 2, a power generation system 3, and a control system 4.

[0032] A partition 2 is installed inside the vehicle body 1, dividing the vehicle body 1 into a first mounting cavity 11 and a second mounting cavity 12. The power generation system 3 and the control system 4 are located in the first mounting cavity 11. Specifically, the mobile power vehicle equipped with medium and low voltage dual motors also includes a vehicle chassis. The vehicle body 1 is mounted on the vehicle chassis, which is a special Class II chassis with strong load-bearing capacity. Alternatively, a suitable commercial vehicle chassis or a special vehicle chassis can be selected, possessing good driving performance and load-bearing capacity.

[0033] The power generation system 3 includes a medium-voltage generator 31, a low-voltage generator 32, and an engine 33. The medium-voltage generator and the low-voltage generator 32 are located on both sides of the engine 33, and the engine 33 is connected to the medium-voltage generator 31 and the low-voltage generator 32 respectively.

[0034] Specifically, the rated output voltage of the medium-voltage generator 31 is set to AC10.5kV, which is a commonly used medium-voltage level in power systems and can meet the power supply needs of large-capacity equipment. The medium-voltage generator 31 is a three-phase AC synchronous generator with a rated power of 1600kW and a rated output voltage of AC10.5kV. The rated output voltage of the low-voltage generator 32 is set to AC380V, which is the most commonly used low-voltage distribution voltage level in industrial and civil fields. The low-voltage generator 32 is a three-phase AC synchronous generator with a rated power of 200kW and a rated output voltage of AC380V. This allows the mobile power supply vehicle equipped with medium and low-voltage dual motors of the present invention to output electrical energy at two different voltage levels simultaneously or independently, improving the flexibility and applicability of power supply. The engine 33 is a 16-cylinder V-type diesel engine with a rated power of 1800kW.

[0035] The control system 4 includes a controller, a communication unit, a control panel 41, and a sensor unit 42. The control panel 41 is located on the inner wall of the first mounting cavity 11. The controller is electrically connected to the power generation system 3, the communication unit, the control panel 41, and the sensor unit 42. The sensor unit 42 is connected to the medium-voltage generator 31, the low-voltage generator 32, and the engine 33. The controller is used to control the operation of the medium-voltage generator and the low-voltage generator 32.

[0036] Specifically, the controller is a PLC controller, and the control panel 41 is equipped with a 10-inch touchscreen, which serves as a human-machine interface for easy operation. The communication unit is a 4G remote communication module, which can upload operating data to a remote monitoring platform and receive remote control commands.

[0037] The control panel 41 also has buttons, indicator lights, etc., to realize control functions such as starting, stopping, speed regulation (thereby regulating the output frequency), and excitation regulation (thereby regulating the output voltage) of medium-voltage generators and low-voltage generators.

[0038] The controller collects real-time operating parameters such as speed, oil temperature, water temperature, oil pressure, output voltage, output current, and output frequency of the medium-voltage generator 31 and low-voltage generator 32 through sensor unit 42, as well as the status of each circuit breaker, bus voltage, and load current. It also performs automatic protection based on preset protection logic (such as overvoltage, undervoltage, overcurrent, overload, short circuit, engine failure, etc.) to ensure the safe and stable operation of the system.

[0039] Sensor unit 42 can collect the output power of medium-voltage generator 31 and low-voltage generator 32 in real time and transmit the data to the controller. The controller calculates the optimal power distribution ratio and transmits the control signal to engine 33, causing the electronic speed governor of engine 33 to stabilize the speed at the corresponding value, thereby adjusting the output power of medium-voltage generator 31 and low-voltage generator 32 accordingly. At the same time, the remote monitoring platform receives the dynamic adjustment records of medium-voltage generator 31, low-voltage generator 32 and engine 33 through the communication unit, including power change curves, speed regulation response time and voltage stability data, which facilitates the analysis of equipment health status by maintenance personnel.

[0040] This invention divides the carriage body 1 into a first mounting cavity 11 and a second mounting cavity 12 using a partition plate 2. The power generation system 3 and the control system 4 are located within the first mounting cavity 11. A medium-voltage generator 31 and a low-voltage generator 32 are located on either side of the engine 33. The engine 33 is connected to both the medium-voltage generator 31 and the low-voltage generator 32. A control panel 41 is mounted on the inner wall of the first mounting cavity 11. The controller is electrically connected to the power generation system 3, the communication unit, the control panel 41, and the sensor unit 42. The sensor unit 42 is connected to the medium-voltage generator 31, the low-voltage generator 32, and the engine 33. During use, the operator adjusts the output power of the medium-voltage generator 31 and the low-voltage generator 32 via the control panel 41. The controller can also control the simultaneous or separate startup of the medium-voltage generator 31 and the low-voltage generator 32 according to actual needs. The remote monitoring platform synchronously receives dynamic adjustment records from the medium-voltage generator 31, the low-voltage generator 32, and the engine 33 via the communication unit, facilitating maintenance personnel's analysis of equipment health status.

[0041] This invention can output power at two voltage levels simultaneously or output one voltage level separately according to actual needs, meeting the power needs of different loads. It reflects the intelligence and high reliability of dual-motor collaborative control. It can supply power to medium-voltage large-capacity equipment as well as low-voltage conventional equipment. It can be widely used in various scenarios such as power emergency repair, power supply for large-scale events, engineering construction, and field operations.

[0042] This invention can also meet the mixed voltage power supply requirements in complex scenarios, reduce the number of devices, simplify the scheduling process, and improve emergency response speed and power supply reliability.

[0043] In one embodiment of the mobile power vehicle equipped with medium and low voltage dual motors of the present invention, the power generation system 3 further includes a power distribution box 34 and a belt drive unit 35. The power distribution box 34 is equipped with an electromagnetic clutch, which is connected to the controller, the medium voltage generator 31 and the engine 33 respectively. The belt drive unit 35 is connected to the low voltage generator 32 and the engine 33 respectively.

[0044] Specifically, the output shaft of engine 33 is connected to the input shaft of medium-voltage generator 31 via a power distribution box 34, and the belt drive unit 35 is connected to the input shaft of low-voltage generator 32. An electromagnetic clutch controls the transmission of mechanical energy from engine 33 to medium-voltage generator 31, and the belt drive unit 35 is equipped with a tensioning device to ensure transmission stability.

[0045] The controller can control the engagement and disengagement of the electromagnetic clutch, as well as the start and stop of the belt drive unit 35, enabling: the engine 33 to simultaneously drive the medium-voltage generator 31 and the low-voltage generator 32; or, the engine 33 to drive only the medium-voltage generator 31; or, the engine 33 to drive only the low-voltage generator 32. These three operating modes can be flexibly switched according to the on-site load requirements, achieving efficient energy utilization.

[0046] The present invention connects the electromagnetic clutch to the controller, the medium-voltage generator 31, and the engine 33 respectively, so that the electromagnetic clutch can realize the flexible connection between the engine 33 and the medium-voltage generator 31 through electronic control, thereby improving the system efficiency and reliability. The belt drive unit 35 is connected to the low-voltage generator 32 and the engine 33 respectively, and the belt drive unit 35 ensures the stability of the transmission.

[0047] In one embodiment of the mobile power vehicle equipped with medium and low voltage dual motors of the present invention, the sensor unit 42 includes a magnetoelectric speed sensor, a pressure sensor, a cooling water temperature sensor, a liquid level sensor, a voltage transmitter, and a current transmitter. The magnetoelectric speed sensor, pressure sensor, cooling water temperature sensor, and liquid level sensor are mounted on the engine 33 to detect the engine speed, pressure, cooling water temperature, and diesel fuel level, respectively. The voltage transmitters are mounted on the medium-voltage generator 31 and the low-voltage generator 32 to detect the output voltage of the medium-voltage generator 31 and the low-voltage generator 32, respectively.

[0048] Specifically, the sensor unit 42 also includes a PT100 thermal resistor, which is used to measure the temperature of the stator winding.

[0049] This invention places a magnetoelectric speed sensor, a pressure sensor, a cooling water temperature sensor, and a liquid level sensor on the engine 33, and voltage transmitters on the medium-voltage generator 31 and the low-voltage generator 32, respectively. During operation, the controller continuously monitors the temperature, current, and transmission status of the medium-voltage generator 31, the low-voltage generator 32, and the engine 33 to ensure a balanced distribution of heat load and prevent belt drive from overloading, thus effectively improving the safety of the system.

[0050] In one embodiment of the mobile power supply vehicle with medium and low voltage dual motors of the present invention, the inner wall of the first mounting cavity 11 adopts a multi-layer steel plate sandwiched with sound-absorbing cotton structure, and the vehicle body 1 is provided with an air inlet and an air outlet communicating with the first mounting cavity 11. The air inlet and the air outlet are respectively provided with an air inlet silencer 14 and an air outlet silencer 15.

[0051] Specifically, the air inlet and the air outlet are respectively located at opposite ends of the first mounting cavity 11, and a smoke exhaust silencer 16 is also provided on the top of the first mounting cavity 11.

[0052] The air intake silencer 14 and the exhaust silencer 15 can reduce the aerodynamic noise generated when the equipment draws in air, prevent noise from being transmitted through the air intake path, maintain ventilation and heat dissipation efficiency, and avoid poor heat dissipation or extra energy consumption caused by noise problems.

[0053] The present invention adopts a multi-layer steel plate sandwiched with sound-absorbing cotton structure for the inner wall of the first mounting cavity 11, which effectively reflects and absorbs high-frequency noise. In addition, the elastic properties of the sound-absorbing cotton can buffer equipment vibration and reduce resonance transmission. The multi-layer steel plate stacking significantly improves the rigidity of the inner wall, avoids deformation of thin steel plates, and disperses vibration energy. An air inlet silencer 14 and an air outlet silencer 15 are respectively installed at the air inlet and air outlet, which can effectively control noise while taking into account system performance and equipment protection.

[0054] In one embodiment of the mobile power supply vehicle equipped with medium and low voltage dual motors of the present invention, an LED lighting lamp, an emergency light and a small maintenance tool cabinet are also provided in the first mounting cavity 11.

[0055] Specifically, the small repair tool cabinet has adjustable drawer dividers to enable tool organization and reduce search time.

[0056] The present invention significantly improves equipment maintenance efficiency, ensures operational safety, and optimizes the working environment by installing LED lighting, emergency lights, and a small maintenance tool cabinet in the first mounting cavity 11.

[0057] In one embodiment of the mobile power vehicle equipped with medium and low voltage dual motors of the present invention, the mobile power vehicle equipped with medium and low voltage dual motors further includes a medium voltage power distribution unit 5 and a low voltage power distribution unit 6. The medium voltage power distribution unit 5 is connected to the medium voltage generator 31 and the controller, and is used to provide power distribution, equipment protection, status monitoring and safety isolation for the medium voltage generator 31. The low voltage power distribution unit 6 is connected to the low voltage generator 32 and the controller, and is used to distribute and control power.

[0058] Specifically, the medium-voltage distribution unit 5 includes a 10kV vacuum circuit breaker (rated current 630A), a disconnecting switch, a voltage transformer, a current transformer, a surge arrester, a 10kV cable plug-in interface, and a cable reel (with a 30-meter long 10kV high-voltage cable). The input terminal of the medium-voltage distribution unit 5 is electrically connected to the output terminal of the medium-voltage generator 31 via a high-voltage cable or copper busbar, and is used for the on / off control, protection, metering, and insulation monitoring of medium-voltage power. It also outputs AC 10.5kV power through a medium-voltage output interface (such as a plug-in interface, cable reel, or fixed terminal block).

[0059] The low-voltage distribution unit 6 includes an MCCB molded case circuit breaker (main switch, rated current 400A, three-phase four-wire), several MCB miniature circuit breakers (branch outgoing switches), surge protectors, current transformers, active / reactive energy meters, and output interfaces: two 32A three-phase four-pole industrial sockets, two 16A three-phase four-pole industrial sockets, four 10A single-phase two-pole + grounded sockets, and one set of 380V / 220V terminal blocks. The input terminal of the low-voltage distribution unit 6 is electrically connected to the output terminal of the low-voltage generator 32 for the distribution, protection, and metering of low-voltage power, and outputs AC380V and AC220V (through a three-phase four-wire system) power through multiple low-voltage output interfaces (such as industrial sockets of different specifications and terminal blocks).

[0060] In one embodiment of the mobile power vehicle equipped with medium and low voltage dual motors of the present invention, the mobile power vehicle equipped with medium and low voltage dual motors further includes an actuator group 7, which includes an electronic speed controller and an excitation regulator. The electronic speed controller is connected to the engine 33, and the excitation regulator is connected to the medium voltage generator 31 and the low voltage generator 32 respectively.

[0061] Specifically, the electronic speed governor can precisely control the speed of engine 33 to ensure that engine 33 can operate stably at the set target speed under various operating conditions. The excitation regulator monitors the generator's output voltage in real time and can precisely control the generator's output voltage to ensure that it is stable at the set rated value, unaffected by load changes and minor fluctuations in prime mover speed.

[0062] This invention connects the electronic speed governor to the engine 33 and the excitation regulator to the medium-voltage generator 31 and the low-voltage generator 32 respectively. The electronic speed governor and the excitation regulator can ensure the stability of the medium-voltage and low-voltage power output of the mobile power vehicle, prevent damage to the electrical equipment due to excessive voltage or failure of the equipment to work properly due to excessive voltage, and also prevent the generator from burning out due to overvoltage or overload operation due to undervoltage, thus protecting the generator.

[0063] In one embodiment of the mobile power vehicle equipped with medium and low voltage dual motors of the present invention, the mobile power vehicle equipped with medium and low voltage dual motors further includes an oil tank 8 and a closed-loop circulating water cooling system 9. The oil tank 8 and the closed-loop circulating water cooling system 9 are disposed in the second mounting cavity 12. The oil tank 8 is connected to the engine 33, and the closed-loop circulating water cooling system 9 is connected to the engine 33 for cooling the engine 33.

[0064] Specifically, the oil tank 8 has a capacity of 3000L. The closed-loop circulating water cooling system 9 includes a radiator, water pump, fan, etc.

[0065] This invention connects a closed-loop circulating water cooling system 9 to an engine 33. The cooling water is driven by a water pump to absorb heat from the equipment, and then the heat is transferred to a secondary cooling medium through a heat exchanger. This ensures that the equipment operates stably at a suitable temperature, avoids scaling and corrosion, greatly reduces water consumption, and reduces maintenance costs.

[0066] Furthermore, mobile power vehicles equipped with dual medium and low voltage motors also include a generator cooling system, which can be an air-cooled or water-cooled system.

[0067] In one embodiment of the mobile power vehicle equipped with medium and low voltage dual motors of the present invention, the mobile power vehicle equipped with medium and low voltage dual motors further includes a hydraulic support leg 13. The hydraulic support leg 13 is disposed on the second mounting cavity 12, and the first end of the hydraulic support leg 13 is connected to the bottom of the oil tank 8, and the second end of the hydraulic support leg 13 passes through the second mounting cavity 12.

[0068] After the vehicle arrives at the work site, the hydraulic support legs 13 are extended to stabilize the vehicle and prevent it from shaking during operation.

[0069] The present invention connects the first end of the hydraulic support leg 13 to the bottom of the oil tank 8, and the second end of the hydraulic support leg 13 passes through the second mounting cavity 12. In use, the support leg is extended outward by hydraulic drive, thereby directly transmitting the weight of the equipment and the working load to the ground, avoiding excessive stress on the chassis. Furthermore, on rugged or uneven ground, the equipment can be quickly adjusted to a horizontal state by independently controlling the extension and retraction of each hydraulic support leg 13, ensuring that the working platform is vertical and stable.

[0070] The dual-motor coordinated control is as follows: Assume that in a certain emergency scenario, the medium-voltage load demand is 1200kW (accounting for 75% of its rated power of 1600kW), the low-voltage load demand is 150kW (accounting for 75% of its rated power of 200kW), and the total load is 1350kW (lower than the rated power of the main power source of 1800kW).

[0071] The control system 4 collects the output power of the medium-voltage generator 31 and the low-voltage generator 32 in real time through sensors. The controller calculates the optimal power distribution ratio: 1200kW is allocated to the medium-voltage generator 31 (gear transmission engagement of the power distribution box 34), and 150kW is allocated to the low-voltage generator 32 (belt drive tension of the belt drive unit 35). At this time, the electronic speed governor of the engine 33 stabilizes the speed at 1500rpm (corresponding to 50Hz output), the electromagnetic clutch maintains the medium-voltage transmission engagement, and the belt drive unit 35 maintains appropriate tension. When the low-voltage load suddenly increases to 180kW (+20%), the controller adjusts the power input ratio of the belt drive unit 35, simultaneously fine-tunes the engine 33 speed within a range of 1500rpm ±1% to supplement the total power, and fine-tunes the excitation current of the medium-voltage generator 31 to ensure that the medium-voltage output voltage is stable within a range of 10.5kV ±5%, achieving a smooth transition of load changes without voltage fluctuations or shutdown.

[0072] Once the load surge is stabilized and suppressed, the system returns to steady-state operation within a set time. The output power of the medium-voltage generator 31 remains at 1200kW, and the output power of the low-voltage generator 32 increases to 180kW, bringing the total load to 1380kW. The controller continuously monitors the temperature, current, and transmission status of the medium-voltage generator 31 and the low-voltage generator 32 to ensure a balanced distribution of heat load and prevent belt drive overload.

[0073] The remote monitoring platform receives the dynamic adjustment record synchronously through the communication unit, which includes power change curves, speed regulation response time and voltage stability data, making it easier for maintenance personnel to analyze the health status of the equipment.

[0074] The entire control process requires no manual intervention, fully demonstrating the intelligence and high reliability of dual-motor collaborative control. The system can also automatically adjust the cooling fan speed based on ambient temperature, further reducing energy consumption and noise. The system possesses a comprehensive energy management strategy, dynamically optimizing the engine's operating point based on load demand to improve fuel economy. Under low-load conditions, it automatically activates energy-saving mode, shutting down unnecessary modules to reduce standby power consumption.

[0075] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A mobile power supply vehicle equipped with dual medium- and low-voltage motors, characterized in that, include: Car body, partitions, power generation system, and control system; The partition is disposed inside the carriage body and divides the carriage body into a first mounting cavity and a second mounting cavity, wherein the power generation system and the control system are located in the first mounting cavity; The power generation system includes a medium-voltage generator, a low-voltage generator, and an engine. The medium-voltage generator and the low-voltage generator are located on both sides of the engine, and the engine is connected to the medium-voltage generator and the low-voltage generator respectively. The control system includes a controller, a communication unit, a control panel, and a sensor unit. The control panel is disposed on the inner wall of the first mounting cavity. The controller is electrically connected to the power generation system, the communication unit, the control panel, and the sensor unit. The sensor unit is connected to the medium-voltage generator, the low-voltage generator, and the engine. The controller is used to control the operation of the medium-voltage generator and the low-voltage generator.

2. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 1, characterized in that, The power generation system also includes a power distribution box and a belt drive unit. The power distribution box is equipped with an electromagnetic clutch, which is connected to the controller, the medium-voltage generator, and the engine. The belt drive unit is connected to the low-voltage generator and the engine.

3. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 1, characterized in that, The sensor unit includes a magnetoelectric speed sensor, a pressure sensor, a coolant temperature sensor, a liquid level sensor, a voltage transmitter, and a current transmitter. The magnetoelectric speed sensor, the pressure sensor, the coolant temperature sensor, and the liquid level sensor are mounted on the engine to detect the engine speed, pressure, coolant temperature, and diesel fuel level, respectively. The voltage transmitters are mounted on the medium-voltage generator and the low-voltage generator to detect the output voltage of the medium-voltage generator and the low-voltage generator, respectively.

4. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 1, characterized in that, The inner wall of the first mounting cavity is made of a multi-layer steel plate sandwiched with sound-absorbing cotton. The carriage body is provided with an air inlet and an air outlet that communicate with the first mounting cavity. The air inlet and the air outlet are respectively provided with an air inlet silencer and an air outlet silencer.

5. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 1, characterized in that, The first installation cavity is also equipped with LED lighting, emergency lights, and a small maintenance tool cabinet.

6. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 1, characterized in that, The mobile power vehicle equipped with dual medium- and low-voltage motors further includes a medium-voltage power distribution unit and a low-voltage power distribution unit. The medium-voltage power distribution unit is connected to the medium-voltage generator and the controller, and is used to provide power distribution, equipment protection, status monitoring and safety isolation for the medium-voltage generator. The low-voltage power distribution unit is connected to the low-voltage generator and the controller, and is used to distribute and control power.

7. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 1, characterized in that, The mobile power vehicle equipped with medium and low voltage dual motors also includes an actuator group, which includes an electronic speed governor and an excitation regulator. The electronic speed governor is connected to the engine, and the excitation regulator is connected to the medium voltage generator and the low voltage generator, respectively.

8. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 1, characterized in that, The mobile power vehicle equipped with medium and low voltage dual motors also includes a fuel tank and a closed-loop water cooling system. The fuel tank and the closed-loop water cooling system are disposed in the second mounting cavity. The fuel tank is connected to the engine, and the closed-loop water cooling system is connected to the engine for cooling the engine.

9. The mobile power supply vehicle equipped with medium and low voltage dual motors according to claim 8, characterized in that, The mobile power supply vehicle equipped with medium and low voltage dual motors also includes a hydraulic support leg. The hydraulic support leg is disposed on the second mounting cavity, and the first end of the hydraulic support leg is connected to the bottom of the oil tank, while the second end of the hydraulic support leg passes through the second mounting cavity.

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