785 results about "Inlet temperature" patented technology

The invention relates to the technical field of energy storage management, in particular to a high-energy-density liquid cooling energy storage system based on thermal management optimization, which comprises a thermal response calculation module, a thermal risk area identification module, a cooling resource allocation module, a thermal decoupling state judgment module and a charging and discharging power limiting module. According to the method, the inlet temperature, the outlet temperature and the cooling liquid flow speed of the high-energy-density energy storage equipment are obtained, the unit thermal load conversion rate is calculated, the unit thermal response deviation degree is determined, the thermal risk area higher than the standard limit is clearly recognized in the energy storage equipment, the corresponding liquid cooling channel is accurately selected, and the cooling liquid pulse flow frequency is optimized; the pertinence and timeliness of the cooling liquid in actual use are effectively improved, the local overheating hidden danger is avoided, the lag response is marked in time by monitoring the cooling liquid pressure difference and the temperature rise change in real time, the decoupling state between the cooling liquid and the thermal load is judged, the charge and discharge power dynamic reduction measure is implemented, and the trend of abnormal and continuous accumulation of the local thermal load is restrained.

The invention relates to the technical field of battery thermal management, in particular to a liquid-cooled fuel cell thermal management subsystem and a control method thereof.The liquid-cooled fuel cell thermal management subsystem comprises a fuel cell body, a cooling liquid circulation system, a temperature sensor, a flow sensor and a thermal management system controller; the heat management system controller is electrically connected with the temperature sensor, the flow sensor, the water pump, the radiator, the heater and the control valve, calculates the pile temperature of the fuel cell main body through load current, and continuously monitors the inlet temperature and the outlet temperature of the fuel cell main body and the outlet flow of the water pump at the same time; and the working state of the cooling liquid circulation system is controlled according to the monitored and calculated data, so that the temperature of the fuel cell main body is accurately controlled.

The invention discloses a condensation-free efficient heat exchange control method and system for a full-premixing water heater, and the method comprises the steps: collecting the multi-source information, such as air inlet temperature, humidity, gas flow, flue gas oxygen concentration and wall temperature, in real time, calculating a predicted dew point based on a dynamic dew point prediction model, and setting a dynamic safety boundary; the condensation risk is judged by comparing the wall temperature with the safety boundary, and active intervention is carried out in a staged cooperation mode that fuel gas and air volume are continuously adjusted firstly and then a partial combustion zone sectioning valve is rapidly turned off; the system comprises a main controller, a mesh-shaped infrared radiation burner, a sectional valve assembly, a gas proportional valve, a frequency conversion fan and related sensors. According to the invention, the system runs close to the condensation boundary through intelligent control, and the advantage of high operation heat efficiency is realized on the premise of ensuring high reliability.

The invention discloses an intelligent control method and system for an automobile air conditioner, and relates to the technical field of intelligent sensing control of air conditioners. The intelligent control method and system for the automobile air conditioner comprise the steps that S1, multi-source data are collected and preprocessed, and a standardized data set is constructed; s2, multi-path temperature difference coupling characteristics are evaluated based on the standardized data set, and the cold and hot air mixing proportion and the air door opening degree are dynamically adjusted; s3, the adjustment adaptability of the multi-source temperature difference and the air outlet speed is analyzed, and opening and closing of an air door and the air supply flow are adjusted; s4, evaluating the thermal response coordination and execution stability of the channels, and adjusting the proportion and control priority of the cold and hot channels; and S5, air door adjustment and response consistency is monitored, the airflow adjustment track is corrected, and mismatch response is analyzed. The problems that most current automobile air conditioning systems cannot dynamically adjust the mixed airflow proportion according to the air inlet temperature change, the evaporator outlet temperature difference and the air blowing opening real-time temperature gradient, so that frequent manual intervention of a user is caused, and comfort and energy efficiency are affected are solved.

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A bypass valve, positioned on a bypass pipeline connecting the supply pipeline to the return pipeline, may be adjusted to a position sufficient to maintain temperature of the flow of gas above a threshold based on the inlet and outlet temperature.

The invention provides an automobile radiator performance test system and method, and the method comprises the steps: fixing a to-be-tested radiator in a radiator clamp before testing; the first, second, third and fourth electric control water valve switches are sequentially connected, so that the cooling liquid circulates; when testing starts, the rotating speed of a water pump and the opening degree of a second electric control water valve switch are adjusted, and the resistance of a circulating waterway is adjusted to simulate different testing working conditions; a water inlet temperature value, a water outlet temperature value and a digital display flowmeter flow value are collected; inputting the temperature value of the water outlet and the flow value of the digital display flowmeter into a trained flow data correction model to obtain a corrected flow value; and based on the water inlet temperature value, the water outlet temperature value and the corrected flow value, calculating the heat dissipating capacity of the radiator under different test conditions. According to the invention, by introducing the rotating speed opening combination-waterway resistance relation model and the flow data correction model, the diversity and accuracy of the performance test of the radiator are improved on the basis of ensuring the universality of the test system.

The invention discloses an automatic control method for the air introduction amount of a dry quenching furnace, and relates to the technical field of dry quenching, and the method comprises the following steps: collecting CO and H concentration distribution data and dust concentration gradient data in an annular flue of the dry quenching furnace, and boiler inlet temperature and circulating gas flow in real time; establishing a multi-parameter coupled dynamic prediction model, and predicting coke burn-out rates and boiler thermal efficiency under different air introduction amounts; an optimal air introduction amount threshold value is calculated through a model prediction control algorithm; on the basis of the optimal air introduction amount threshold value, the opening degree of an electric valve of an air introduction pipe is dynamically adjusted, meanwhile, displacement compensation of a servo mechanism at the position of an introduction opening in the annular flue is triggered, and an introduction point is made to be located in the optimization interval of the CO concentration, the Hconcentration and the dust concentration all the time; and a self-adaptive correction module is established, when it is detected that coke maturity is abnormal and coke discharge temperature fluctuation is abnormal, a compensation control mode based on deep reinforcement learning is automatically switched, and dynamic prediction model parameters are updated.

The present application relates to a warming-up control method for a fuel cell system in a starting process and a fuel cell system, applied to the technical field of fuel cells. The method includes: starting the fuel cell system, turning on a small-cycle cooling circuit, and pull-loading an output power to a first power; in response to an inlet temperature of a stack reaching a first temperature, rotating a three-way valve at a first rotating rate; calculating a variance of a cell voltage value; in response to the variance being smaller than a third threshold and reducing the variance to be within the first threshold, returning to the rotating the three-way valve at the first rotating rate until all turn-on of a large-cycle cooling circuit and all turn-off of the small-cycle cooling circuit; pull-loading the output power to a rated power.

The invention provides a heavy duty gas turbine control system which comprises a signal conditioning module and a plurality of parameter control modules, and a rotating speed control module, a load control module, a temperature limit control module and an acceleration control module in the parameter control modules are all used for achieving closed-loop control according to the deviation between a set value and a corresponding observation value; the starting control module is used for acquiring a starting fuel quantity instruction through a designed control strategy; the IGV and VGVs control module obtains an IGV and VGVs angle instruction according to the turbine inlet temperature set value, the turbine outlet temperature set value and the deviation maximum value of the corresponding observation value; the fuel quantity control module obtains a total fuel quantity instruction based on a full working condition range fuel quantity control strategy; the fuel gas distribution control module is used for obtaining an opening degree instruction of each fuel valve according to the total fuel quantity instruction; the adaptability, the reliability and the usability of the control system in application scenes such as autonomous design and technical improvement are improved.

The invention discloses a gas turbine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and an operation method, and relates to the technical field of combined cycle unit energy conservation, the system comprises a waste heat recovery module, an air inlet temperature regulation and control module, an energy conversion module and a control module; high-temperature exhaust smoke of the waste heat boiler is used as a heat source to heat a flue gas heat exchanger at the tail of the waste heat boiler of the combined cycle unit to generate hot water, and the hot water is used for directly heating inlet air of a gas turbine, driving an absorption heat pump to generate cold water to cool the inlet air of the gas turbine or driving an organic Rankine cycle module to generate power to be connected into auxiliary power, so that multipurpose utilization of waste heat of the unit is realized; in addition, the invention provides an operation method for synergistically improving the efficiency of the system and the combined cycle unit, the wide-load operation capacity and the partial-load energy utilization capacity of the unit can be effectively improved, meanwhile, the waste heat recovery capacity under the high-temperature condition is guaranteed, and the energy consumption efficiency of the unit is comprehensively improved.

The invention relates to the technical field of new energy automobile heat management, and discloses a battery inlet water temperature-based dual-threshold decision-making method, which is realized through the following components: an intelligent collaborative decision-making center module, a multi-source data sensing acquisition module, a waste heat recovery and efficient heat exchange module, a precise execution driving module and a multi-level safety guarantee module. The intelligent collaborative decision center module comprises a heat management controller and an AI intelligent control unit; the multi-source data sensing and collecting module comprises a battery management system, a whole vehicle controller, an air conditioner controller and a full-dimension parameter monitoring sub-module. The waste heat recovery and efficient heat exchange module comprises a double-effect Chiller, an electronic expansion valve, a three-way valve and a four-way valve; the invention aims to solve the problems that energy consumption is increased and efficient circulation of energy cannot be realized due to the fact that waste heat generated in the operation process of components such as a motor cannot be fully excavated and reused and temperature control requirements are met by depending on additional heating or refrigerating components in the heat management of the existing new energy automobile.

The invention provides a finish rolling inlet temperature forecast control method and device, electronic equipment and a storage medium, and relates to the technical field of steel rolling, and the method comprises the following steps: firstly, constructing a temperature forecast control model based on historical data in the hot rolling cooling process of different plates, and then according to the temperature data collected at the real temperature and the output result of the temperature forecast control model, calculating the temperature forecast control value; dynamically adjusting parameters of the temperature forecast control model; based on the deviation between the temperature distribution predicted by the temperature forecast control model and the target temperature distribution, parameters of a cooling system are adjusted so as to control the cooling temperature of a finish rolling inlet; through the method, the technical problem that the cooling temperature control precision is low in the hot rolling production process is solved, and the technical effects of improving the temperature stability of a finish rolling inlet, and improving the cooling efficiency and the product quality stability are achieved.

The invention relates to the technical field of liquid cooling water tower control, in particular to a liquid cooling water tower control method and system.The control method comprises the steps that the water inlet temperature Tin, the water outlet temperature Tout and the environment temperature Tenv of a cooling water tower are collected in real time, and a dynamic adjustment model is established based on the water inlet temperature Tin, the water outlet temperature Tout and the environment temperature Tenv to calculate the target cooling efficiency eta target; and according to the difference value between the eta target and the real-time cooling efficiency eta real, the cooling water flow Q and the fan rotating speed N are dynamically adjusted, and the optimal ratio of Q to N is determined through an energy efficiency optimization algorithm to reduce energy consumption. And when the cooling load is suddenly changed, a feedforward-feedback composite control mode is started. A multi-stage safety control strategy is set, and a thermal runaway prediction model is adopted to prevent risks in advance. The corresponding system comprises a distributed temperature sensing array, a frequency conversion speed regulation module, an edge calculation unit and an emergency cooling execution mechanism. The cooling efficiency can be improved, the energy consumption can be reduced, and the system stability and safety can be enhanced.

The invention provides heat exchange equipment and a control method based on the heat exchange equipment, the heat exchange equipment comprises a shell, the shell is provided with a first end and a second end which deviate from each other, the first end faces a first space and is provided with a fresh air port and an exhaust port, and the second end faces a second space and is provided with an air supply port and an air return port; the detection device is configured to obtain the air inlet temperature of the fresh air opening; the control device is configured to calculate the dew point temperature of the second space in the state that the air inlet temperature is higher than the preset temperature; the detection device is further configured to obtain the air supply temperature of the air supply outlet, and the control device is further configured to compare the air supply temperature with the dew point temperature.

The invention relates to a fuel cell thermal management system for a heavy-load change working condition, and belongs to the technical field of fuel cells. According to the system, a galvanic pile unit comprises a galvanic pile cooling path inlet temperature sensor, a galvanic pile cooling path outlet temperature sensor, a current output sensor and a voltage output sensor which are used for collecting galvanic pile cooling path inlet and outlet temperature and output current and voltage respectively; the controller is used for presetting the target temperature of the cooling liquid at the outlet of the electric pile and calculating the opening value of the electronic thermostat through a cascade internal model control algorithm in combination with the inlet and outlet temperatures so as to control the opening of the electronic thermostat; an optimal working temperature threshold value is preset, outlet temperature grades are divided, and a heat dissipation unit is controlled according to the outlet temperature grades; working current is preset, the required cooling liquid flow is calculated through a measuring and calculating model in combination with output voltage and inlet and outlet temperatures, rotating speed data is calculated according to the flow-efficiency-rotating speed characteristics of the electronic centrifugal pump, rotating speed grades are divided, and operation of the electronic centrifugal pump is controlled; and controlling the PTC heater to start and stop according to the target and outlet temperature judgment result. And efficient fuel cell thermal management control is realized.

A power extraction system for a gas turbine engine can include a low spool transmission, a high spool transmission, a low spool motor-generator mechanically connected to the low spool transmission, a high spool motor-generator mechanically connected to the high spool transmission and electrically connected to the low spool motor-generator, and a controller in operable communication with the low spool motor-generator and the high spool motor-generator. The controller can be configured to command the high spool motor-generator to push power to the low spool motor-generator in response to a ratio of the fan inlet temperature to a combustor outlet temperature being less than a threshold fan-inlet-temperature-to-combustor-outlet-temperature ratio.

Disclosed in the present invention are a fuel cell system operating condition detection method, an automatic test method, and a test system. The fuel cell system operating condition detection method comprises: firstly, on the basis of main operating conditions of a fuel cell system, selecting a current, a hydrogen inlet pressure, an air inlet pressure, a coolant inlet temperature and a coolant outlet temperature as determination references for operating condition detection; then, performing interpolation on the basis of the current value of the current, so as to acquire control target values of the remaining parameters; and finally, determining a system state on the basis of signal features of the current combined with whether the remaining parameters are within threshold ranges of the control target values, so as to complete operating condition identification. The method is applicable to a fuel cell test system, and has the advantages of facilitating calculation, requiring no training, allowing online operation, involving an automatic test sequence, etc. An automatic test procedure can also avoid the problem of the next group of new test conditions being automatically triggered due to latency-induced erroneous determination during operating condition detection, thereby improving the stability and reliability of the system.

The invention relates to a method for determining performance degradation of a gas turbine according to real-time operating parameters, which comprises the following steps of: based on the real-time operating parameters, selecting the rotating speed of a high-pressure compressor and the rear air pressure of the high-pressure compressor under rated working conditions at different air inlet temperatures for real-time conversion, and further calculating the performance degradation index variable of the gas turbine according to the performance degradation index variable of the gas turbine. The thermal efficiency under different indexes is obtained by using the linear relation between the decline index variable and the thermal efficiency, so that the performance decline value is obtained, and the cleaning time of the through-flow part is determined. According to the method, the performance degradation index variable of the gas turbine is provided by utilizing the characteristics that after the performance degradation of the gas turbine, the rotating speed of the high-pressure compressor is increased and the air pressure behind the high-pressure compressor is reduced, the problem that the thermal efficiency cannot be measured due to objective condition limitation is avoided, and the method is easy to operate and has important significance on the operation of the gas turbine.

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A flow of working fluid may be adjusted to a percentage sufficient to maintain temperature of the flow of compressed gas within the selected operating temperature range.

The invention provides a vehicle diesel engine bench simulation emission test method, system, device and medium, and belongs to the bench test technology field, a test bench and a test device are configured, a flowmeter and an analyzer are calibrated through a linear regression equation, and a mapping relation between a measured value and an output quantity is established; an engine transient working condition model is constructed based on real vehicle data, and mapping of the rack control process and the real vehicle operation working condition is achieved; configuring the rotating speed, the torque, the air inlet temperature and the air inlet humidity controlled by the rack as boundary conditions, evaluating the control following performance through a correlation coefficient calculation mode, and verifying the environmental parameter consistency based on a mean value deviation; calculating the exhaust flow, and configuring measurement data based on the intake flow and the fuel consumption; executing a transient test, and obtaining real-time data of an engine running state and discharged pollutants; and under the condition that the double boundary condition constraints are met, carrying out equivalence analysis on a rack and a real vehicle emission result.

The invention relates to the technical field of thermal power generation, in particular to a closed circulation cold end optimization method, device and system, and the method comprises the following steps: obtaining the historical operation data of a unit from a power plant monitoring information system, the data comprises circulating water flow, circulating water inlet temperature, circulating water outlet temperature, condenser backpressure water pump motor current, generator power, medium and low pressure heat supply steam flow, condenser steam-water temperature and condenser water inlet and outlet pressure; s2, performing abnormal value processing on the data obtained in the step S1, namely screening out an abnormal value, and repairing and filling the abnormal value by using an interpolation method; based on the actual condition of the power plant, the unit load and the steam admission amount of the condenser are fitted through a large amount of historical data in the step S2; the total power for starting different numbers of circulating water pumps and fans and the water flow corresponding to the circulating water pumps are determined according to the historical data in the step S2; respectively establishing a condenser model and a cooling tower model; constructing a circulating cooling system model, coupling the condenser model and the cooling tower model, carrying out iterative calculation until convergence or reaching the maximum number of iterations, and obtaining the condenser outlet water temperature, the cooling tower outlet water temperature, the condenser back pressure, the vacuum degree and the power generation power; fitting a correction coefficient curve by referring to the technical specification of a power plant and combining the historical data in the step S2 with the condenser backpressure-generated power correction coefficient graph; and calculating the generated power and the net output power according to the unit load and the auxiliary machine consumption, and outputting an auxiliary machine configuration scheme corresponding to the maximum net power.

A gas turbine control device including: a fuel flow rate calculation unit that calculates a fuel flow rate indicating an amount of fuel entering a combustor; an air flow rate calculation unit that calculates an air flow rate; a turbine inlet temperature calculation unit that calculates a turbine inlet temperature, on the basis of the fuel flow rate, the air flow rate, and a physical model formula for thermal energy balance about the combustor; a heat balance computation unit that performs computation to satisfy the heat balance of the gas turbine; a state detection unit that detects the state of the gas turbine; and a correction processing unit that, on the basis of the computation result output by the heat balance computation unit, corrects one or both of the fuel flow rate and the air flow rate, and gives the corrected flow rate to the turbine inlet temperature calculation unit.

The invention discloses a catalyst addition test correction method, system, equipment and medium, and belongs to the technical field of power system energy storage equipment, and the method comprises the steps: obtaining boiler operation parameters, and constructing a boiler efficiency model; a load-coal consumption correction curve is generated through the boiler efficiency model in combination with blank period test data and used for correcting load differences; based on the adding period test conditions, the blank period boiler efficiency is corrected, and corrected blank reference coal consumption is obtained; and the heat loss calculation is adjusted by correcting the air inlet temperature, the feed water temperature, the fuel characteristics and the air moisture deviation design value, and the boiler efficiency under the corrected condition is obtained. By correcting key parameters such as the air inlet temperature, the feed water temperature, the fuel characteristics and the air moisture, boiler efficiency fluctuation caused by operation condition differences is eliminated, and the comparability of test results in the blank period and the adding period is ensured.

The invention provides a system and a method for dynamically utilizing cold energy of a gas storage of a million-cube compressed air energy storage system. The method comprises the following steps: acquiring multi-source monitoring data to construct a basic data set; establishing an internal space-time dynamic model of the gas storage by applying a multi-scale thermal flow constraint space reconstruction method; a hierarchical control framework is developed to realize cooperative control of a throttle valve and a cold energy recovery device; and a working condition similarity enhancement method based on cold energy characteristics and a cold energy recovery control strategy self-adaptive generation method are constructed. According to the method, the technical problems of temperature field accurate modeling in the large gas storage, cold energy characteristic working condition identification, throttling-cold energy recovery cooperative control and the like are solved, the cold energy recovery efficiency is improved by 20-30%, and turbine inlet temperature fluctuation is reduced.

The invention provides a control method and device of a heat pump unit, the heat pump unit and a storage medium, the method is applied to the heat pump unit, the heat pump unit comprises a compressor and a water side heat exchanger, and the method comprises the steps that the target temperature difference value of the water side heat exchanger and the environment temperature of the environment space where the heat pump unit is located are obtained; the target temperature difference value is the temperature difference needed by the water inlet temperature and the water outlet temperature of the water side heat exchanger, the maximum operation frequency of the compressor is determined based on the target temperature difference value, the environment temperature and the water inlet temperature, the compressor is controlled to operate at the target operation frequency, and the target operation frequency is smaller than or equal to the maximum operation frequency. According to the method, the operation frequency of the compressor can be adjusted to be matched with the opening of the electronic expansion valve, and frequent starting and stopping of the heat pump unit are avoided.

The invention provides a steady-state temperature distortion inlet temperature test layout method, and belongs to the field of aero-engine tests, and the method comprises the steps: S10, constructing a temperature field mathematical model of a measurement cross section in a steady-state temperature distortion test and a test layout mathematical model employing a fixed total temperature probe for temperature measurement; s20, temperature field parameters used for describing temperature field distortion characteristics are determined, the relative error sum of the temperature field parameters in the prior flow field and the temperature field parameters at the corresponding coordinates of the test layout is calculated, and therefore the optimization target of the test layout is determined; and S30, taking the circumferential angle of the fixed total temperature probe in the test layout as an optimization parameter, taking the relative error sum of the temperature field parameters as an optimization target, and adopting an optimization algorithm to optimize the circumferential angle of the fixed total temperature probe in the test layout. Therefore, the circumferential optimal angles of the fixed total temperature probes with different circumferential numbers in the steady-state temperature distortion test are obtained. The method is good in convergence and high in calculation precision.

The invention relates to the technical field of fuel cell control, in particular to a staged optimization control method for a fuel cell cold start-up process, which comprises the following steps of: acquiring output voltage and current of an electric pile and a cooling liquid inlet temperature signal in real time at the initial start-up stage, calculating a dynamic load impedance amplitude and inputting the dynamic load impedance amplitude into a polarization characteristic coupling estimation model; ohm, activation and concentration polarization voltage drop estimation values are obtained. And comparing the three types of estimated values with a preset polarization threshold to determine a polarization dominant stage, and calling corresponding temperature and humidity control parameters from a preset control strategy mapping table in combination with the cooling liquid inlet temperature. According to the method, polarization stages are accurately divided through polarization decoupling estimation, the control parameters are matched based on the mapping relation, the cold start control logic of the fuel cell is optimized, and the suitability of the cold start control of the stack and the actual operation state is improved.

The invention discloses a converter dry dedusting blowing control method and related equipment, and relates to the technical field of converter steelmaking processes, the method comprises the steps that converter blowing parameters are obtained, and the converter blowing parameters comprise the molten iron silicon content and the converter tonnage; determining blowing oxygen flow based on the converter blowing parameters; the inlet temperature and flue gas components of the evaporative cooler are monitored in real time; and based on the blowing oxygen flow, when the oxygen content in the flue gas components is lower than a preset first threshold value and the inlet temperature is higher than a preset second threshold value, the blowing starting stage is completed, and the main blowing control stage is started. According to the method, the oxygen flow is dynamically determined by obtaining the converter blowing parameters, the end condition of the blowing starting stage is accurately judged in combination with the evaporative cooler inlet temperature and the flue gas components monitored in real time, and the production efficiency and the process stability of converter steelmaking are improved.

The invention discloses a starting method, device and equipment of a fuel cell engine and a storage medium. The starting method comprises the steps that when the fuel cell engine is in a cold engine starting state with the environment temperature larger than 0 DEG C, the fuel cell engine is controlled to execute a heat engine mode; when the pile cooling liquid outlet temperature reaches a first target temperature, obtaining an intercooler cooling liquid inlet temperature and an intercooler cooling liquid outlet temperature; and when the temperature of the intercooler cooling liquid inlet is lower than the temperature of the intercooler cooling liquid outlet, the fuel cell engine is controlled to enter a load pulling mode. According to the technical scheme, it is ensured that the temperature condition of the fuel cell engine rapidly reaches the target value before rapid load pulling, the fault that the fuel cell engine directly enters the load pulling mode and liquid water forms pile flooding due to current increase is avoided, rapid engine heating is achieved, and meanwhile normal work of the fuel cell engine is ensured.

The invention discloses a fault diagnosis method and system of an electric drive system and a readable storage medium. The fault diagnosis method comprises the following steps: acquiring multi-dimensional data in real time; wherein the multi-dimensional data comprises at least two of water inlet temperature, controller temperature, voltage, current, rotating speed and torque; motor temperature prediction is carried out by using the target prediction model in combination with the multi-dimensional data, and corresponding multi-dimensional data segments when the predicted motor temperature is greater than a preset temperature threshold are obtained; performing feature engineering processing on the multi-dimensional data fragments by using a singular value decomposition technology to obtain a target data matrix; performing clustering analysis on the target data matrix by using a Gaussian mixture model to obtain a classification result; and obtaining a fault diagnosis result according to the classification result. In this way, the real-time performance, accuracy and reliability of fault detection of the electric drive system can be improved.