Brayton cycle test bench measurement and control system and method
By using the Brayton cycle test bench measurement and control system and method, and by utilizing the control timing file and the index arrangement of the control cluster, automated measurement and control of the Brayton cycle system was achieved. This solved the problems of inaccurate equipment control and parameter measurement, and improved the system's operating efficiency and the degree of equipment automation.
Patent Information
- Application Number
- CN202511050310.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-11-14
AI Technical Summary
In the existing technology, the equipment control and parameter measurement of Brayton cycle test benches are inaccurate, have a small range, low operating efficiency, and are difficult to achieve continuous operation under multiple working conditions and integrated measurement and control.
A Brayton cycle test bench measurement and control system and method are adopted. By controlling the timing file and the index arrangement of the control cluster, combined with the precise control of the frequency converter, heater and air supply system, the automated measurement and control of the Brayton cycle system is realized, including the adjustment of the frequency converter operating frequency, the compressor inlet pressure, the turbine inlet temperature and the setting of the waiting time.
It achieves precise control and integrated measurement of multiple operating points on the Brayton cycle test bench, improves the system's operating efficiency and the degree of equipment automation, reduces manual operation, and ensures sequential control of key process steps.
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Figure CN120949644A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of thermoelectric conversion measurement and control technology, specifically relating to a Brayton cycle test bench measurement and control system and method. Background Technology
[0002] With the development of space propulsion technology, spacecraft are showing a trend of diversified payloads and more complex missions, and their energy demand is gradually developing towards the levels of hundreds, kilowatts, and even megawatts.
[0003] Therefore, there is a need to develop efficient thermoelectric conversion systems, and the Brayton cycle, with its small weight, controllability, and balance of conversion efficiency and probability density, has become the preferred thermoelectric conversion technology.
[0004] The Brayton cycle system mainly consists of a compressor, regenerator, heater, turbine, cooler, and motor. The working fluid enters the compressor for compression, converting the compressor's mechanical energy into the working fluid's internal energy, increasing its temperature and pressure. The gas exiting the compressor enters the cold end of the regenerator for preheating; the heat in this process comes from the heat released by the gas exiting the turbine entering the hot end of the regenerator. The working fluid then enters the heater for further heating, and then enters the turbine, where it expands and performs work, converting this into mechanical energy that drives the compressor and motor. The working fluid exiting the hot end of the regenerator enters the cooler, completing the cycle.
[0005] Therefore, to carry out technical research on Brayton thermoelectric conversion, it is necessary to build a corresponding Brayton test rig, and it is very important to accurately and effectively measure and control the equipment and systems in the Brayton cycle system.
[0006] Patent document CN112834699A relates to a supercritical carbon dioxide compression cycle test bench, which integrates a magnetic levitation motor module, a compressor module, a cooling module, a pressure reducing valve module, and a sensor module. The test bench controls the compressor's pressure ratio by changing the speed and load of the magnetic levitation motor through a monitoring unit within the supercritical carbon dioxide closed-loop control bench. The heat exchange effect of the cooler is controlled by changing the opening of the circulating water pump in the cooler. The pressure reducing valve simulates the isentropic expansion process of the turbine in the Brayton cycle; the pressure reducing valve can be controlled by an industrial control computer to adjust the state of the outlet working fluid. This invention, by monitoring the temperature and pressure at key measuring points, as well as the mass flow rate of supercritical carbon dioxide in the pipeline, can test the key performance of the core equipment of the supercritical carbon dioxide Brayton cycle, study its impact on the Brayton thermodynamic cycle, and monitor its operating status. However, this method, which detects temperature, pressure, and the mass flow rate of carbon dioxide, does not solve the problems of poor accuracy, limited range, and low operating efficiency in the control and parameter measurement of various system equipment in the Brayton cycle test.
[0007] This problem urgently needs to be solved. Summary of the Invention
[0008] To address the shortcomings of existing technologies, the purpose of this invention is to provide a Brayton cycle test bench control system and method.
[0009] A Brayton cycle test bench measurement and control method provided by the present invention includes:
[0010] Step S1: Load and parse the control timing file to obtain the control cluster;
[0011] Step S2: Execute the i-th control cluster and continue operating until the waiting time; the initial value of i is 1;
[0012] Step S3: Let i = i + 1, that is, increase the value of i by 1, and repeat step S2 until i is greater than N, then end; N is a preset threshold.
[0013] Preferably, in step S1, the control timing includes multiple control clusters arranged by index; the control clusters include: inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time.
[0014] Preferably, step S2 includes:
[0015] Step S2.1: Divide the control cluster into N independent control instructions according to the index;
[0016] Step S2.2: Execute the i-th independent control command and continue operating until the preset waiting time; the initial value of i is 1.
[0017] Preferably, step S2.2 includes:
[0018] The system determines whether the inverter's operating frequency is greater than or equal to 0. If the result is yes, a frequency command is sent to the host computer to the inverter to adjust the motor speed; if the result is no, no command is sent to the inverter. The inverter's operating frequency range is -1, 0 to 1000Hz. The value of "-1" is only used for conditional judgment and has no actual numerical meaning.
[0019] If the turbine inlet temperature is greater than or equal to 0, a temperature command is sent to the host computer to the heater of the Brayton cycle system to adjust the turbine inlet gas temperature; if the result is not, no heating command is sent to the heater. The numerical range of the turbine inlet temperature is -1, 0 to 1200℃.
[0020] If the compressor inlet pressure is greater than or equal to 0, a switch command is sent to the host computer to the air supply system of the Brayton cycle system to adjust the compressor inlet pressure; if the result is not, no adjustment command is sent to the air supply system. The numerical range of the compressor inlet pressure is -1, 0 to 10 MPa.
[0021] Start the timer and continue operating until the preset waiting time is reached; the waiting time ranges from 0 to 4294967265 seconds.
[0022] A Brayton cycle test bench measurement and control system according to the present invention includes:
[0023] Module M1: Loads and parses the control timing file to obtain the control cluster;
[0024] Module M2: Executes the i-th control cluster, continuing operation until the waiting time; the initial value of i is 1;
[0025] Module M3: Let i = i + 1, that is, increase the value of i by 1, and repeat step S2 until i is greater than N, then end; N is a preset threshold.
[0026] Preferably, in module M1, the control timing includes multiple control clusters arranged by index; the control clusters include: inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time.
[0027] Preferably, module M2 includes:
[0028] Module M2.1: Divides the control cluster into N independent control instructions according to the index;
[0029] Module M2.2: Executes the i-th independent control instruction and continues operating until the preset waiting time; the initial value of i is 1.
[0030] Preferably, module M2.2 includes:
[0031] The system determines whether the inverter's operating frequency is greater than or equal to 0. If the result is yes, a frequency command is sent to the host computer to the inverter to adjust the motor speed; if the result is no, no command is sent to the inverter. The inverter's operating frequency range is -1, 0 to 1000Hz; where "-1" is a preset condition criterion for the task.
[0032] If the turbine inlet temperature is greater than or equal to 0, a temperature command is sent to the host computer to the heater of the Brayton cycle system to adjust the turbine inlet gas temperature; if the result is not, no heating command is sent to the heater. The numerical range of the turbine inlet temperature is -1, 0 to 1200℃.
[0033] If the compressor inlet pressure is greater than or equal to 0, a switch command is sent to the host computer to the air supply system of the Brayton cycle system to adjust the compressor inlet pressure; if the result is not, no adjustment command is sent to the air supply system. The numerical range of the compressor inlet pressure is -1, 0 to 10 MPa.
[0034] Start the timer and continue operating until the preset waiting time is reached; the waiting time ranges from 0 to 4294967265 seconds.
[0035] According to the present invention, a computer-readable storage medium storing a computer program is characterized in that, when the computer program is executed by a processor, it implements the steps of a Brayton cycle test bench measurement and control method.
[0036] An electronic device according to the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the computer program, when executed by the processor, implements the steps of a Brayton cycle test bench measurement and control method.
[0037] Compared with the prior art, the present invention has the following beneficial effects:
[0038] 1. The Brayton test bench measurement and control system provided by this invention effectively solves the control and parameter measurement of various system equipment in Brayton cycle testing. It can be used for continuous operation under multiple working conditions of Brayton cycle and for integrated measurement and control of all equipment in Brayton cycle system.
[0039] 2. The Brayton test bench measurement and control method provided by the present invention is simple in design and can easily realize the setting of multiple working points of the Brayton cycle and the timing setting between each working point, thereby reducing manual operation and improving the operating efficiency of the entire system.
[0040] 3. The Brayton test bench measurement and control method provided by the present invention realizes the sequential control and timing control of key process links and key components in the Brayton cycle. Attached Figure Description
[0041] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0042] Figure 1 This is a schematic diagram of the measurement and control system provided by the present invention;
[0043] Figure 2 This is a schematic diagram of the measurement and control method provided by the present invention. Detailed Implementation
[0044] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.
[0045] A Brayton cycle test bench control system according to the present invention includes: a host computer, a switch, a controller, a data acquisition unit, a frequency converter, a rectifier, an electrical parameter measuring instrument, and a Brayton cycle system; wherein the Brayton cycle system is as follows: Figure 1 As shown, it includes: compressor, regenerator, heater, turbine, cooler, and motor.
[0046] The Brayton cycle system is a typical thermal cycle system that uses gas as the working fluid and achieves energy conversion through four processes: adiabatic compression, isobaric heat absorption, adiabatic expansion, and isobaric cooling.
[0047] First, the low-temperature, low-pressure working fluid enters the compressor and is raised to high pressure. Then, it absorbs the heat from the working fluid discharged from the turbine through the regenerator. Next, it enters the turbine to do work and drive the motor. The working fluid discharged from the turbine releases some heat through the regenerator and finally enters the next cycle after passing through the cooler.
[0048] The host computer, switch, controller, data acquisition unit, frequency converter, rectifier, and electrical parameter measuring instrument are interconnected through the switch and exchange data.
[0049] The data acquisition device is used to acquire target signals in the Brayton cycle system, and then to provide feedback control to the Brayton cycle system; the target signals include: pressure, flow rate, temperature, vibration, displacement, and other signals;
[0050] The controller is capable of controlling the Brayton cycle system, specifically by controlling the operation of the motor through a frequency converter and a rectifier.
[0051] The host computer can access the electrical parameter measuring instrument to measure the electrical parameters of the motor.
[0052] Specifically, the host computer can generate a control timing file, which contains multiple control clusters arranged by index. Each control cluster contains the inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time.
[0053] The control timing file is parsed, and instructions are sent to the frequency converter, heater, and gas supply system in the order of the index.
[0054] When the inverter operating frequency, turbine inlet temperature, or compressor inlet pressure is greater than or equal to 0, the corresponding equipment command is triggered; otherwise, the current state is maintained.
[0055] After the waiting time for each control cluster ends, it automatically jumps to the control cluster of the next index until all conditions are completed.
[0056] A Brayton cycle test bench measurement and control method provided by the present invention includes:
[0057] Step 1: Load the control timing file, which contains multiple control clusters arranged by index. Each control cluster includes the inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time.
[0058] Step 2: Parse the control timing file and split the control cluster into N independent control instructions according to the index;
[0059] Step 3: Execute the i-th control cluster, where i is initially set to 1;
[0060] Sub-step 31: Determine whether the operating frequency of the frequency converter is greater than or equal to 0. If the result is yes, send a frequency command to the host computer to the frequency converter to adjust the motor speed; if the result is no, do not send a command to the frequency converter.
[0061] Sub-step 32: Determine whether the turbine inlet temperature is greater than or equal to 0. If the result is yes, send a temperature command to the heater of the Brayton cycle system to the host computer to adjust the turbine inlet gas temperature; if the result is no, do not send a heating command to the heater.
[0062] Sub-step 33: Determine whether the compressor inlet pressure is greater than or equal to 0. If the result is yes, send a switch command to the host computer to the air supply system of the Brayton cycle system, thereby adjusting the compressor inlet pressure.
[0063] Step S4: Start the timer and continue executing the current working condition until the waiting time is reached;
[0064] Step S5: i = i + 1, repeat steps S3 to S4 until i > N, then end the experiment. i = i + 1 means increasing the value of i by 1.
[0065] like Figure 1 As shown, a Brayton test bench measurement and control system consists of a host computer, a switch, a controller, a data acquisition unit, a frequency converter, a rectifier, and an electrical parameter measuring instrument. These components are interconnected via a network through the switch and exchange data. Furthermore, the system controls the systems and equipment in the Brayton cycle system, thereby realizing the measurement and control of the Brayton test bench.
[0066] The controller is used to ensure the orderly operation of the Brayton cycle system; the data acquisition unit is used to acquire signals from the Brayton cycle system.
[0067] The controller is used for the process control of heaters, gas supply systems, water supply systems, coolers, vacuum systems, power supply systems, etc. in the Brayton cycle system. It also controls the operation of the motor through frequency converters and rectifiers.
[0068] The data acquisition unit collects signals such as pressure, flow rate, temperature, vibration, and displacement from the Brayton cycle system for feedback control of heaters, gas supply systems, coolers, etc. Furthermore, the electrical parameters of the motor are measured using an electrical parameter measuring instrument.
[0069] The host computer controls the frequency converter and rectifier to achieve smooth motor operation. The host computer also accesses electrical parameter measuring instruments to measure the motor's electrical parameters.
[0070] Specifically, the measurement and control system uses a combination of frequency converters and rectifiers with electrical parameter measuring instruments to achieve smooth motor operation control and electrical parameter measurement. In other words, the frequency converter and rectifier control the motor's operation, while the electrical parameter measuring instrument measures the motor's electrical parameters.
[0071] The Brayton test bench measurement and control method includes: incorporating the inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time into the control timing sequence, and driving the motor, compressor, and turbine in the Brayton cycle system to operate under the specified conditions by analyzing the timing sequence, thereby realizing the process-oriented and automated testing of the Brayton test bench.
[0072] Specifically, by controlling the operation of timing files, the editing, storage, loading, and updating of timing data can be achieved, thereby enabling data flow operations of control information.
[0073] Specifically, the control information in the control timing file exists in the form of cluster arrays. Each cluster contains the inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time. Negative numbers are only used to determine whether an action will not be executed.
[0074] The individual cluster includes: the inverter operating frequency, whose data type is: integer; its value range is -1, 0 to 1000, and the unit is: Hz; where "-1" is a pre-set condition criterion for the task;
[0075] The compressor inlet pressure is a single-precision floating-point data type; its numerical range is -1, 0 to 10, and its unit is MPa.
[0076] The turbine inlet temperature is a single-precision floating-point data type; its numerical type is -1, 0 to 1200, and its unit is ℃.
[0077] The waiting time is of data type: long integer; its value range is 0 to 4294967265, and its unit is seconds (S).
[0078] During control, the control timing cluster array is parsed one by one according to the index number until the last cluster is parsed and executed, and the last timing point is completed; thus, the automatic control of the Brayton cycle test bench is realized.
[0079] Specifically, the operating frequency of the frequency converter is controlled by commands set by the host computer. When the frequency is ≥0, the host computer sends a frequency command to the frequency converter to drive the motor operation; when the frequency is <0, no operation is performed.
[0080] Specifically, the turbine inlet temperature is controlled by a host computer sending commands to the heater. When the temperature is ≥0, the host computer sends a temperature control command to the heater to set the turbine inlet temperature; when the temperature is <0, no operation is performed.
[0081] Specifically, the compressor inlet pressure is controlled by commands from the host computer. When the pressure is ≥0, the host computer sends an open command to the air supply system to set the compressor inlet pressure; when the pressure is <0, no operation is performed.
[0082] Specifically, this invention controls the change or maintenance of the operating conditions of the frequency converter, heater, and gas supply system by setting the frequency, temperature, and pressure values respectively; and by setting the waiting time, it forms the timing control of the frequency converter, heater, and gas supply system, thereby realizing the operating condition control of the working fluid thermal cycle of the Brayton test bench.
[0083] The timing cluster array is parsed one by one according to the index number until the last cluster is parsed and executed, and the last timing point is completed; then the automatic control of the Brayton test bench is realized.
[0084] like Figure 2 As shown, the control method of the present invention is performed according to the following steps:
[0085] S1. When the program starts, it accesses the S2 control timing file and loads the control timing into the program.
[0086] S3. Determine whether timing settings need to be performed. If yes, proceed to step S4; otherwise, proceed to step S5.
[0087] S4. Edit the control timing sequence. The edited content is the content in the control timing cluster array of S6, namely the inverter operating frequency, compressor inlet pressure, turbine inlet temperature and waiting time. Then proceed to step S7 to update the control timing file, that is, update the control timing file of S2, and then load the updated control timing sequence.
[0088] S5. Parse the S1 control timing file, decompose the control timing cluster array into N control timing clusters according to the index number, and parse the control timing into control code.
[0089] S8. Execute the control timing cluster 1 in S7 of the parsing, and simultaneously proceed to steps S9, S10, and S11;
[0090] S9. Perform step S12 to determine the inverter's operating frequency 1. If the frequency is ≥0, proceed to step S15; otherwise, no action is taken.
[0091] S10. Perform step S13 to determine the turbine inlet temperature 1. If the temperature is ≥0, proceed to step S16; otherwise, no action is taken.
[0092] S11. Perform step S14 to determine the compressor inlet pressure 1. If the pressure is ≥0, proceed to step S17; otherwise, no action is taken.
[0093] S15. Send frequency 1 to the inverter and proceed to step S18;
[0094] S16. Send the temperature to the heater controller and proceed to step S19;
[0095] S17. Issue a switch command to control the pressure regulation of the high-pressure gas source and proceed to step S20;
[0096] S18. The frequency converter operates at frequency 1, driving the motor to run.
[0097] S19. The heater controls the turbine inlet temperature according to the turbine inlet temperature 1;
[0098] S20. The high-pressure gas source regulates the compressor inlet pressure by switching the solenoid valve. That is, the compressor inlet pressure is increased by opening the inlet valve and closing the exhaust valve, and the compressor inlet pressure is decreased by closing the inlet valve and opening the exhaust valve.
[0099] S21, execute the operating condition 1 corresponding to the control timing to perform the Brayton heat cycle;
[0100] S22. The Brayton thermal cycle under operating condition 1 is timed for a duration of T1.
[0101] After the timing of steps S23 and S22 is completed, execute control timing cluster 2 in sequence... execute control timing cluster 2N, repeat steps S23 to S37, refer to S8 to S22, until all operating conditions are completed, and end the test.
[0102] The present invention also provides a Brayton cycle test bench measurement and control system, which can be implemented by executing the process steps of the Brayton cycle test bench measurement and control method. That is, those skilled in the art can understand the Brayton cycle test bench measurement and control method as a preferred embodiment of the Brayton cycle test bench measurement and control system.
[0103] A Brayton cycle test bench measurement and control system according to the present invention includes:
[0104] Module M1: Loads and parses the control timing file to obtain the control cluster;
[0105] Module M2: Executes the i-th control cluster, continuing operation until the waiting time; the initial value of i is 1;
[0106] Module M3: Let i = i + 1, that is, increase the value of i by 1, and repeat step S2 until i is greater than N, then end; N is a preset threshold.
[0107] Specifically, in module M1, the control timing includes multiple control clusters arranged by index; the control clusters include: inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time.
[0108] Specifically, module M2 includes:
[0109] Module M2.1: Divides the control cluster into N independent control instructions according to the index;
[0110] Module M2.2: Executes the i-th independent control instruction and continues operating until the preset waiting time; the initial value of i is 1.
[0111] Specifically, module M2.2 includes:
[0112] The system determines whether the inverter's operating frequency is greater than or equal to 0. If the result is yes, a frequency command is sent to the host computer to the inverter to adjust the motor speed; if the result is no, no command is sent to the inverter. The inverter's operating frequency range is -1, 0 to 1000Hz; where "-1" is a preset condition criterion for the task.
[0113] If the turbine inlet temperature is greater than or equal to 0, a temperature command is sent to the host computer to the heater of the Brayton cycle system to adjust the turbine inlet gas temperature; if the result is not, no heating command is sent to the heater. The numerical range of the turbine inlet temperature is -1, 0 to 1200℃.
[0114] If the compressor inlet pressure is greater than or equal to 0, a switch command is sent to the host computer to the air supply system of the Brayton cycle system to adjust the compressor inlet pressure; if the result is not, no adjustment command is sent to the air supply system. The numerical range of the compressor inlet pressure is -1, 0 to 10 MPa.
[0115] Start the timer and continue operating until the preset waiting time is reached; the waiting time ranges from 0 to 4294967265 seconds.
[0116] According to the present invention, a computer-readable storage medium storing a computer program is characterized in that, when the computer program is executed by a processor, it implements the steps of a Brayton cycle test bench measurement and control method.
[0117] An electronic device according to the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the computer program, when executed by the processor, implements the steps of a Brayton cycle test bench measurement and control method.
[0118] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
Claims
1. A method for measuring and controlling a Brayton cycle test bench, characterized in that, include: Step S1: Load and parse the control timing file to obtain the control cluster; Step S2: Execute the i-th control cluster and continue operating until the waiting time; the initial value of i is 1; Step S3: Let i = i + 1, that is, increase the value of i by 1, and repeat step S2 until i is greater than N, then end; N is a preset threshold.
2. The Brayton cycle test bench measurement and control method according to claim 1, characterized in that, In step S1, the control timing includes multiple control clusters arranged by index; the control clusters include: inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time.
3. The Brayton cycle test bench measurement and control method according to claim 1, characterized in that, Step S2 includes: Step S2.1: Divide the control cluster into N independent control instructions according to the index; Step S2.2: Execute the i-th independent control command and continue operating until the preset waiting time; the initial value of i is 1.
4. The Brayton cycle test bench measurement and control method according to claim 3, characterized in that, Step S2.2 includes: Determine if the inverter's operating frequency is greater than or equal to 0. If yes, send a frequency command to the host computer to the inverter to adjust the motor speed; if no, do not send a command to the inverter. The inverter's operating frequency range is -1, 0 to 1000Hz; where "-1" is a preset condition criterion for the task. If the turbine inlet temperature is greater than or equal to 0, a temperature command is sent to the host computer to the heater of the Brayton cycle system to adjust the turbine inlet gas temperature; if the result is not, no heating command is sent to the heater. The numerical range of the turbine inlet temperature is -1, 0 to 1200℃. If the compressor inlet pressure is greater than or equal to 0, a switch command is sent to the host computer to the air supply system of the Brayton cycle system to adjust the compressor inlet pressure; if the result is not, no adjustment command is sent to the air supply system. The numerical range of the compressor inlet pressure is -1, 0 to 10 MPa. Start the timer and continue operating until the preset waiting time is reached; the waiting time ranges from 0 to 4294967265 seconds.
5. A Brayton cycle test bench control system, characterized in that, include: Module M1: Loads and parses the control timing file to obtain the control cluster; Module M2: Executes the i-th control cluster, continuing operation until the waiting time; the initial value of i is 1; Module M3: Let i = i + 1, that is, increase the value of i by 1, and repeat step S2 until i is greater than N, then end; N is a preset threshold.
6. The Brayton cycle test bench measurement and control system according to claim 5, characterized in that, In module M1, the control timing includes multiple control clusters arranged by index; the control clusters include: inverter operating frequency, compressor inlet pressure, turbine inlet temperature, and waiting time.
7. The Brayton cycle test bench control system according to claim 1, characterized in that, The module M2 includes: Module M2.1: Divides the control cluster into N independent control instructions according to the index; Module M2.2: Executes the i-th independent control instruction and continues operating until the preset waiting time; the initial value of i is 1.
8. The Brayton cycle test bench control system according to claim 7, characterized in that, The module M2.2 includes: Determine if the inverter's operating frequency is greater than or equal to 0. If yes, send a frequency command to the host computer to the inverter to adjust the motor speed; if no, do not send a command to the inverter. The inverter's operating frequency range is -1, 0 to 1000Hz; where "-1" is a preset condition criterion for the task. If the turbine inlet temperature is greater than or equal to 0, a temperature command is sent to the host computer to the heater of the Brayton cycle system to adjust the turbine inlet gas temperature; if the result is not, no heating command is sent to the heater. The numerical range of the turbine inlet temperature is -1, 0 to 1200℃. If the compressor inlet pressure is greater than or equal to 0, a switch command is sent to the host computer to the air supply system of the Brayton cycle system to adjust the compressor inlet pressure; if the result is not, no adjustment command is sent to the air supply system. The numerical range of the compressor inlet pressure is -1, 0 to 10 MPa. Start the timer and continue operating until the preset waiting time is reached; the waiting time ranges from 0 to 4294967265 seconds.
9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the Brayton cycle test bench measurement and control method as described in any one of claims 1 to 4.
10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the computer program is executed by the processor, it implements the steps of the Brayton cycle test bench measurement and control method as described in any one of claims 1 to 4.
Citation Information
Patent Citations
Supercritical carbon dioxide compression cycle test bench
CN112834699A