Methods, devices, equipment, and media for determining the energy efficiency parameters of generator motors

Abstract

This invention discloses a method, apparatus, device, and medium for determining the energy efficiency parameters of a generator-motor. The method involves acquiring the stator voltage and stator current of the generator-motor under the target operating condition for which the energy efficiency parameters are to be determined; predicting the stator current phase angle of the generator-motor under the target operating condition based on the stator voltage and stator current; performing iterative calculations based on the current phase angle to determine the target stator current phase angle of the generator-motor under the target operating condition that conforms to the motor flux linkage relationship; and determining the target energy efficiency parameters of the generator-motor based on the target current phase angle. This invention can effectively improve the efficiency of determining the energy efficiency parameters of a generator-motor.

Description

Technical Field

[0001] This invention relates to the field of energy storage equipment technology, specifically to a method, apparatus, equipment, and medium for determining the energy efficiency parameters of a generator motor. Background Technology

[0002] When calculating energy efficiency parameters such as losses and temperature rise of pumped-storage generators, considering the limited computing power of computers, only some structural components of the pumped-storage equipment are modeled. Therefore, passive load circuits that conform to the operating principles of motors cannot be used for calculation; instead, active load circuits are used. Active load circuits calculate and apply different currents to the stator and rotor of the generator, iteratively finding the energy efficiency parameters such as losses and temperature rise of some structural components of the generator that conform to the motor's magnetic flux relationship. However, the starting point for iteration is generally set from zero, requiring multiple iterations to find the desired result, resulting in low efficiency in determining the energy efficiency parameters of the generator. Summary of the Invention

[0003] This invention provides a method, apparatus, device, and medium for determining the energy efficiency parameters of a generator motor, aiming to effectively improve the efficiency of determining the energy efficiency parameters of a generator motor.

[0004] In a first aspect, embodiments of the present invention provide a method for determining the energy efficiency parameters of a generator motor, comprising:

[0005] Obtain the stator voltage and stator current of the generator motor under the target operating conditions for the energy efficiency parameters to be determined;

[0006] Based on the stator voltage and the stator current, predict the stator current phase angle of the generator motor under the target operating condition;

[0007] Based on the current phase angle, an iterative calculation is performed to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship.

[0008] The target energy efficiency parameters of the generator motor are determined based on the target current phase angle.

[0009] Optionally, predicting the stator current phase angle of the generator motor under the target operating condition based on the stator voltage and the stator current includes:

[0010] Based on the stator voltage and the stator current, determine the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition;

[0011] Based on the phase difference and the operating mode of the generator motor under the target operating condition, the current phase angle of the stator of the generator motor under the target operating condition is predicted.

[0012] Optionally, determining the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition based on the stator voltage and the stator current includes:

[0013] Based on the stator voltage, the stator current, and the corresponding phase difference derivation formula under the target operating condition, the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition is determined.

[0014] Optionally, the operating phase includes a delayed phase or an advanced phase, and the derivation formula for the phase difference of the delayed phase is as follows:

[0015] ;

[0016] The corresponding phase difference derivation formula is as follows:

[0017] ;

[0018] in, The stator current, The stator voltage is... The quadrature-axis reactance of the generator motor is... The power factor angle of the generator motor is given.

[0019] Optionally, predicting the stator current phase angle of the generator motor under the target operating condition based on the phase difference and the operating mode of the generator motor under the target operating condition includes:

[0020] When the operating mode is generator mode, the difference between the phase difference and the right angle is used as the predicted current phase angle;

[0021] When the operating mode is motor mode, the difference between the phase difference and the right angle is used as the predicted current phase angle.

[0022] Optionally, the step of iteratively calculating based on the current phase angle to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship, includes:

[0023] Calculate the simulated torque of the generator motor when an alternating current corresponding to the current phase angle is applied to the stator and a DC excitation current is applied to the rotor of the generator motor;

[0024] When the simulated torque of the generator motor does not reach the rated torque, the calculation is re-executed by adjusting the current phase angle and applying the AC current corresponding to the current phase angle to the stator and the DC excitation current to the rotor of the generator motor, thus resuming the simulated torque of the generator motor.

[0025] When the simulated torque of the generator motor reaches the rated torque, the latest current phase angle is obtained as the target current phase angle.

[0026] Secondly, embodiments of the present invention provide an energy efficiency parameter determination device for a generator motor, the energy efficiency parameter determination device for a generator motor comprising:

[0027] The acquisition module is used to acquire the stator voltage and stator current of the generator motor under the target operating conditions of the energy efficiency parameters to be determined;

[0028] The prediction module is used to predict the current phase angle of the stator of the generator motor under the target operating condition based on the stator voltage and the stator current.

[0029] An iterative module is used to perform iterative calculations based on the current phase angle to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship.

[0030] The determination module is used to determine the target energy efficiency parameters of the generator motor based on the target current phase angle.

[0031] Thirdly, embodiments of the present invention also provide an electronic device, including a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the method for determining the energy efficiency parameters of any of the generator motors provided in the embodiments of the present invention.

[0032] Fourthly, embodiments of the present invention also provide a computer-readable storage medium, which includes a computer program. When the computer program is run on an electronic device, the computer program is used to cause the electronic device to perform the steps of the method for determining the energy efficiency parameters of any of the generator motors provided in the embodiments of the present invention.

[0033] This invention obtains the stator voltage and stator current of a generator-motor under target operating conditions for which energy efficiency parameters need to be determined; predicts the stator current phase angle of the generator-motor under the target operating conditions based on the stator voltage and stator current; performs iterative calculations based on the current phase angle to determine the target current phase angle of the generator-motor under the target operating conditions that conforms to the motor flux linkage relationship; and determines the target energy efficiency parameters of the generator-motor based on the target current phase angle. By predicting the stator current phase angle of the generator-motor under the target operating conditions using the stator voltage and stator current, and using the predicted current phase angle as a starting point for iterative calculations, the target current phase angle of the generator-motor under the target operating conditions that conforms to the motor flux linkage relationship is quickly determined. Therefore, the target energy efficiency parameters of the generator-motor can be quickly determined based on the target current phase angle, improving the efficiency of determining the energy efficiency parameters of the generator-motor. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a flowchart illustrating one embodiment of the method for determining the energy efficiency parameters of a generator motor provided in this invention.

[0036] Figure 2 This is a schematic diagram of motor vectors under different operating conditions provided in an embodiment of the present invention;

[0037] Figure 3 This is another schematic diagram of motor vector under different operating conditions provided in this embodiment of the invention;

[0038] Figure 4 This is a schematic diagram of a two-dimensional calculation model provided in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the application process of a method for determining the energy efficiency parameters of a generator motor provided in an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of a three-dimensional simulation model provided in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of the device for determining the energy efficiency parameters of a generator motor provided in an embodiment of the present invention;

[0042] Figure 8This is a schematic diagram of the structure of the electronic device provided in the embodiment of the present invention. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, in the description of the embodiments of the present invention, the terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, "multiple" means two or more, unless otherwise explicitly specified.

[0044] This invention provides a method, apparatus, equipment, and medium for determining the energy efficiency parameters of a generator motor.

[0045] Specifically, this embodiment will be described from the perspective of the device for determining the energy efficiency parameters of the generator motor. This device can be integrated into a terminal device. That is, the method for determining the energy efficiency parameters of the generator motor in this embodiment can be executed by the terminal device, which can be a generator motor, a computer, a mobile phone, or other devices.

[0046] The following detailed description is provided in conjunction with the accompanying drawings. In this embodiment, the execution subject is a terminal device as an example. It should be noted that the order of description in the following embodiments is not intended to limit the preferred order of the embodiments. Although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown in the accompanying drawings.

[0047] When calculating energy efficiency parameters such as losses and temperature rise of pumped-storage generators, considering the limited computing power of computers, only some structural components of the pumped-storage equipment are modeled. Therefore, passive load circuits that conform to the operating principles of motors cannot be used for calculation; instead, active load circuits are used. Active load circuits calculate and apply different currents to the stator and rotor of the generator, iteratively finding the energy efficiency parameters such as losses and temperature rise of some structural components of the generator that conform to the motor's magnetic flux relationship. However, the starting point for iteration is generally set from zero, requiring multiple iterations to find the desired result, resulting in low efficiency in determining the energy efficiency parameters of the generator.

[0048] Specifically, when using 3D finite element software to calculate the losses of the end structure components of a generator motor, the computing power of the computer is usually insufficient to build a complete model of the generator motor, so only the end structure components can be modeled separately.

[0049] When calculating the end structure components in isolation, the model cannot be treated as a normal motor model. Therefore, a passive load circuit that conforms to the operating principles of a motor cannot be used for calculation. Instead, an active load circuit is used. The active load circuit assigns currents corresponding to different operating conditions to the stator and rotor, and determines the appropriate current through iterative settings. When the magnetic field generated by these currents is consistent with the motor's flux linkage relationship for these operating conditions, the energy efficiency parameters such as eddy current losses induced in the end structure components will be consistent, thus allowing the calculation of the losses in the generator-motor end structure components. However, iteratively setting the current generally starts from zero, requiring many iterations to find the appropriate current, resulting in low efficiency in determining the energy efficiency parameters of the generator-motor.

[0050] To address the aforementioned problems, this invention discloses a method for determining the energy efficiency parameters of a generator motor. Please refer to [reference needed]. Figure 1 The specific process for determining the energy efficiency parameters of the generator motor can be summarized in steps S10 to S40, where:

[0051] Step S10: Obtain the stator voltage and stator current of the generator motor under the target operating conditions for the energy efficiency parameters to be determined;

[0052] In this embodiment, the generator motor can be a pumped-storage generator motor, which operates under various conditions during normal operation. These conditions include generator lagging-phase operation, generator leading-phase operation, motor lagging-phase operation, and motor leading-phase operation. For different operating conditions, the energy efficiency parameters of the generator motor under different conditions can be determined. Energy efficiency parameters can include the energy efficiency parameters of some structural components of the generator motor, such as losses and temperature rise of the end structural components. The generator motor includes a stator and a rotor, which can be winding coils. Stator voltage refers to the voltage across the stator, i.e., the output or input voltage of the generator motor, and stator current refers to the current flowing through the stator. The target operating condition refers to the operating condition under which energy efficiency parameters are to be calculated. Obtaining the stator voltage and stator current of the generator motor under the target operating condition under which the energy efficiency parameters are to be determined allows for the prediction of the initial current phase angle of the stator, accelerating the determination of energy efficiency parameters.

[0053] Step S20: Based on the stator voltage and the stator current, predict the stator current phase angle of the generator motor under the target operating condition;

[0054] In this embodiment, based on the stator voltage and stator current, the stator current phase angle of the generator motor under the target operating condition can be predicted. This step is a rough calculation of the target current phase angle of the stator when the generator motor meets the motor flux linkage relationship under the target operating condition.

[0055] In one embodiment, predicting the stator current phase angle of the generator motor under the target operating condition based on the stator voltage and the stator current includes:

[0056] Based on the stator voltage and the stator current, determine the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition;

[0057] Based on the phase difference and the operating mode of the generator motor under the target operating condition, the current phase angle of the stator of the generator motor under the target operating condition is predicted.

[0058] In this embodiment, the internal power factor angle under the target operating condition is determined based on the stator voltage and stator current under the target operating condition. This parameter is used to characterize the magnetomotive force of the generator motor under target operating conditions. With stator current The phase angle difference between them. Based on the magnetomotive force. With stator current The phase angle difference between the phase angles and the operating mode of the generator motor under the target operating condition can be used to predict the stator current phase angle of the generator motor under the target operating condition.

[0059] In one embodiment, determining the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition based on the stator voltage and the stator current includes:

[0060] Based on the stator voltage, the stator current, and the corresponding phase difference derivation formula under the target operating condition, the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition is determined.

[0061] In this embodiment, based on the vector diagrams of different operating conditions of the generator motor, the phase difference derivation formulas corresponding to different operating conditions can be derived, thereby obtaining the internal power factor angle under different operating conditions. This refers to the phase difference between the magnetomotive force (EMF) and stator current of the generator motor under various operating conditions. When calculating the phase difference between the magnetomotive force and stator current under the target operating condition, a pre-derived phase difference derivation formula for the corresponding operating condition is obtained. The stator voltage and stator current under the target operating condition are substituted into this formula to determine the phase difference between the magnetomotive force and stator current under the target operating condition, which is also the internal power factor angle of the generator motor under the target operating condition. .

[0062] In one embodiment, the operating phase includes a delayed phase or an advancing phase, and the derivation formula for the phase difference of the delayed phase is as follows:

[0063] ;

[0064] The corresponding phase difference derivation formula is as follows:

[0065] ;

[0066] in, The stator current, The stator voltage is... The quadrature-axis reactance of the generator motor is... This is the power factor angle of the generator motor.

[0067] In this embodiment, the voltage equation of the synchronous motor is:

[0068] in, Stator voltage; Stator current; For magnetomotive force; This refers to the stator winding resistance. This is the equivalent reactance of the stator winding. For example... Figure 2 The diagram shows the motor parameter vector diagram under different operating conditions of the generator motor. The power angle δ in the diagram is... and The angle between them, the power factor angle φ Stator voltage and stator current The angle between the two sides, due to the stator resistance Much smaller than the stator reactance, its effect is usually negligible. Combined with... Figure 3 Vector diagrams are used to obtain data under different working conditions. Derivation formula for the value:

[0069] Under the condition of delayed phase: (1);

[0070] Under the condition of leading phase: (2);

[0071] in, The quadrature-axis reactance of the generator motor is... This is the power factor angle of the generator motor.

[0072] If the operating condition is generator delayed phase operation or motor delayed phase operation, formula (1) can be used. The derivation of the value can be performed using formula (2) if the operating condition is generator leading phase operation or motor leading phase operation. Derivation of the value.

[0073] In one embodiment, predicting the stator current phase angle of the generator motor under the target operating condition based on the phase difference and the operating mode of the generator motor under the target operating condition includes:

[0074] When the operating mode is generator mode, the difference between the phase difference and the right angle is used as the predicted current phase angle;

[0075] When the operating mode is motor mode, the difference between the phase difference and the right angle is used as the predicted current phase angle.

[0076] In this embodiment, according to Figure 2 The stator current shown With stator voltage By determining the phase relationship, we can first identify different operating modes under various working conditions, and then predict the stator current phase angle of the generator motor under the target operating condition based on the phase difference. The generator motor includes two operating modes: motor mode and generator mode. In motor mode, the stator windings are energized with three-phase alternating current, generating a rotating magnetic field that drives the rotor to rotate. In generator mode, when the rotor rotates, the magnetic field cuts the stator windings, inducing a three-phase alternating voltage and outputting electrical energy.

[0077] When the operating mode is generator mode, the formula for predicting the stator current phase angle of the generator motor based on the phase difference is as follows:

[0078] ；

[0079] This formula is applicable to both generator lagging-phase operation and generator leading-phase operation.

[0080] When the operating mode is motor mode, the formula for predicting the stator current phase angle of the generator motor based on the supplementary angle of the phase difference is as follows:

[0081] ;

[0082] This formula is applicable to both delayed-phase and advanced-phase motor operation.

[0083] Based on the above embodiments, the stator current phase angle predicted by the formula in the above embodiments is very close to the target stator current phase angle of the generator motor under the target operating condition that conforms to the motor flux relationship when the simulation is in operation. Substituting this into the iterative calculation will effectively reduce the number of iterations required by the computer and greatly improve the calculation efficiency.

[0084] Step S30: Based on the current phase angle, perform iterative calculations to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship.

[0085] In this embodiment, the current phase angle of the stator is close to the target current phase of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship. The current phase angle of the stator can be used as the initial current phase angle for iterative calculation to determine the target current phase angle of the stator of the generator motor under the target operating condition that conforms to the motor flux linkage relationship.

[0086] In some embodiments, the step of iteratively calculating based on the current phase angle to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship, includes:

[0087] Calculate the simulated torque of the generator motor when an alternating current corresponding to the current phase angle is applied to the stator and a DC excitation current is applied to the rotor of the generator motor;

[0088] When the simulated torque of the generator motor does not reach the rated torque, the calculation is re-executed by adjusting the current phase angle and applying the AC current corresponding to the current phase angle to the stator and the DC excitation current to the rotor of the generator motor, thus resuming the simulated torque of the generator motor.

[0089] When the simulated torque of the generator motor reaches the rated torque, the latest current phase angle is obtained as the target current phase angle.

[0090] In some embodiments, iterative calculations based on the current phase angle can be performed using a two-dimensional finite element method. First, a two-dimensional calculation model of the generator motor is established, such as... Figure 4As shown, the stator circuit is divided into three phases, and the rotor deflection angle is adjusted to align the rotor's d-axis (rotor magnetic field centerline) as closely as possible with the centerline of the stator A-phase band. The stator windings are symmetrical three-phase windings with a phase difference of 120°. The A-phase band refers to the distribution of the stator A-phase windings, which can be simply understood as aligning the magnetic field centerlines of the stator and rotor. If the target operating condition is a leading-phase condition, the DC excitation current for the leading-phase condition needs to be obtained through multiple iterations using a passive load coupling circuit. If the target operating condition is a lagging-phase condition, the current phase angle is directly iterated.

[0091] For the iteration of the current phase angle, in the coupling circuit, a DC excitation current is applied to the rotor, based on the current phase angle. Given an alternating current applied to the inductor, the alternating current includes I A 、I B and I C Three-phase current, of which , 、 Then, according to the principle of three-phase equal distribution, in sequence of By reducing the value by 120° and 240°, the simulated torque of the generator motor is calculated when the AC current corresponding to the current phase angle is applied to the stator and the DC excitation current is applied to the rotor of the generator motor. If the simulated torque of the generator motor does not reach the rated torque, the current phase angle is adjusted. Repeat the above steps to iterate the current phase angle. , The value needs to be continuously iterated to make the generator motor reach its rated torque. When the simulated torque of the generator motor reaches the rated torque In this case, the coupling circuit simulation is the correct circuit that conforms to the motor flux linkage relationship, and the latest current phase angle is obtained as the target current phase angle of the stator of the generator motor under the target operating condition.

[0092] Step S40: Determine the target energy efficiency parameters of the generator motor based on the target current phase angle.

[0093] In this embodiment, the target current phase angle is the current phase angle that conforms to the motor flux linkage relationship. By performing simulation calculations using the target current phase angle, the accurate target energy efficiency parameters of the generator motor can be determined.

[0094] In one embodiment, determining the target energy efficiency parameters of the generator motor based on the target current phase angle includes:

[0095] Obtain a three-dimensional simulation model of the generator motor;

[0096] The target current phase angle is applied to the coupling circuit of the three-dimensional simulation model for calculation to obtain the target energy efficiency parameters of the generator motor.

[0097] In this embodiment, a three-dimensional simulation model of the generator motor is obtained. This three-dimensional simulation model can be a three-dimensional simulation model of some structural components of the generator motor. The AC current corresponding to the target current phase angle is applied to the coupling circuit of the three-dimensional simulation model for calculation to obtain the target energy efficiency parameters of the generator motor.

[0098] In some embodiments, the DC excitation current of the rotor may be iterated under certain operating conditions. If it is necessary to iterate the DC excitation current of the rotor, the target DC excitation current after iteration is used. Phase angle with target current The target energy efficiency parameters of the generator motor are obtained by applying the coupling circuit to the three-dimensional simulation model.

[0099] In one example, such as Figure 5 As shown, the target operating condition of the generator-motor is determined, and a rough prediction of the stator current phase angle is performed. If the target operating condition is a late-phase condition, the current phase angle is directly iterated to determine if the rated torque is reached, thus outputting the target current phase angle. If the target operating condition is a leading-phase condition, the rotor's DC excitation current needs to be iterated first to determine if the rated torque is reached, thus outputting the target DC excitation current. In generator-motor simulation calculations, due to insufficient computing power, it is often impossible to build a complete generator-motor model; only the end structural components of the generator-motor are modeled separately, such as... Figure 6 As shown, the target DC excitation current Phase angle with target current A three-dimensional simulation model of the end structure of the generator motor is applied, and the three-dimensional end magnetic field and loss are calculated to obtain the loss of the end structure under the target operating conditions. Then, the temperature rise of the end structure under the target operating conditions is calculated through the three-dimensional temperature field.

[0100] This embodiment also provides a device for determining the energy efficiency parameters of a generator motor, which can be integrated into an electronic device, such as a terminal device or a generator motor. For example, Figure 7 As shown, the device for determining the energy efficiency parameters of the generator motor may include:

[0101] The acquisition module 701 is used to acquire the stator voltage and stator current of the generator motor under the target operating conditions of the energy efficiency parameters to be determined;

[0102] Prediction module 702 is used to predict the current phase angle of the stator of the generator motor under the target operating condition based on the stator voltage and the stator current;

[0103] The iteration module 703 is used to perform iterative calculations based on the current phase angle to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux relationship.

[0104] The determination module 704 is used to determine the target energy efficiency parameters of the generator motor based on the target current phase angle.

[0105] Optionally, the prediction module 702 is further configured to determine the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition based on the stator voltage and the stator current;

[0106] Based on the phase difference and the operating mode of the generator motor under the target operating condition, the current phase angle of the stator of the generator motor under the target operating condition is predicted.

[0107] Optionally, the prediction module 702 is further configured to determine the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition based on the stator voltage, the stator current, and the phase difference derivation formula corresponding to the operation under the target operating condition.

[0108] Optionally, the operating phase includes a delayed phase or an advanced phase, and the derivation formula for the phase difference of the delayed phase is as follows:

[0109] ;

[0110] The operating phase includes a delayed phase or an advancing phase, and the derivation formula for the phase difference corresponding to the delayed phase is as follows:

[0111] ;

[0112] in, The stator current, The stator voltage is... The quadrature-axis reactance of the generator motor is... The power factor angle of the generator motor is given.

[0113] The operating phase includes a late phase or a leading phase. When the operating mode is generator mode, the difference between the phase difference and the right angle is used as the predicted current phase angle.

[0114] When the operating mode is motor mode, the difference between the phase difference and the right angle is used as the predicted current phase angle.

[0115] Optionally, the iteration module 703 is further configured to calculate the simulated torque of the generator motor when an alternating current corresponding to the current phase angle is applied to the stator and a DC excitation current is applied to the rotor of the generator motor.

[0116] When the simulated torque of the generator motor does not reach the rated torque, the calculation is re-executed by adjusting the current phase angle and applying the AC current corresponding to the current phase angle to the stator and the DC excitation current to the rotor of the generator motor, thus resuming the simulated torque of the generator motor.

[0117] When the simulated torque of the generator motor reaches the rated torque, the latest current phase angle is obtained as the target current phase angle.

[0118] Optionally, the determining module 704 is also used to obtain a three-dimensional simulation model of the generator motor;

[0119] The target current phase angle is applied to the coupling circuit of the three-dimensional simulation model for calculation to obtain the target energy efficiency parameters of the generator motor.

[0120] This embodiment obtains the stator voltage and stator current of the generator-motor under the target operating condition for which the energy efficiency parameters to be determined; predicts the stator current phase angle of the generator-motor under the target operating condition based on the stator voltage and stator current; performs iterative calculations based on the current phase angle to determine the target current phase angle of the generator-motor under the target operating condition that conforms to the motor flux linkage relationship; and determines the target energy efficiency parameters of the generator-motor based on the target current phase angle. By predicting the stator current phase angle of the generator-motor under the target operating condition using the stator voltage and stator current, and using the predicted current phase angle as a starting point for iterative calculations, the target current phase angle of the generator-motor under the target operating condition that conforms to the motor flux linkage relationship is quickly determined. Therefore, the target energy efficiency parameters of the generator-motor can be quickly determined based on the target current phase angle, improving the efficiency of determining the energy efficiency parameters of the generator-motor.

[0121] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0122] like Figure 8 As shown, Figure 8This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. The electronic device 800 includes a processor 801 with one or more processing cores, a memory 802 with one or more computer-readable storage media, and a computer program stored on the memory 802 and executable on the processor. The processor 801 and the memory 802 are electrically connected. Those skilled in the art will understand that the electronic device structure shown in the figure does not constitute a limitation on the electronic device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0123] The processor 801 is the control center of the electronic device 800. It connects various parts of the electronic device 800 via various interfaces and lines. By running or loading software programs and / or units stored in the memory 802, and by calling data stored in the memory 802, it executes various functions and processes data of the electronic device 800, thereby providing overall monitoring of the electronic device 800. The processor 801 can be a CPU, GPU, network processor (NP), etc., and can implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of this invention.

[0124] In this embodiment of the invention, the processor 801 in the electronic device 800 loads the instructions corresponding to the processes of one or more application programs into the memory 802 according to the following steps, and the processor 801 runs the application programs stored in the memory 802 to realize various functions, such as:

[0125] Obtain the full characteristic curve dataset of the electronic device to be optimized. The full characteristic curve dataset includes multiple first operating point data of the electronic device, and the first operating point data includes multiple operating parameters.

[0126] Obtain the stator voltage and stator current of the generator motor under the target operating conditions for the energy efficiency parameters to be determined;

[0127] Based on the stator voltage and the stator current, predict the stator current phase angle of the generator motor under the target operating condition;

[0128] Based on the current phase angle, an iterative calculation is performed to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship.

[0129] The target energy efficiency parameters of the generator motor are determined based on the target current phase angle.

[0130] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0131] Optional, such as Figure 8 As shown, the electronic device 800 further includes an input unit 803 and a power supply 804. The processor 801 is electrically connected to both the input unit 803 and the power supply 804. Those skilled in the art will understand that... Figure 8 The electronic device structure shown does not constitute a limitation on the electronic device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0132] The input unit 803 can be used to receive input numbers, characters, or user characteristic information (such as fingerprints, iris, facial information, etc.), and to generate keyboard, mouse, joystick, optical, or trackball signal inputs related to user settings and function control.

[0133] Power supply 804 is used to supply power to various components of electronic device 800. Optionally, power supply 804 can be logically connected to processor 801 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. Power supply 804 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0134] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0135] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0136] To this end, embodiments of the present invention provide a computer-readable storage medium storing a plurality of computer programs, which can be loaded by a processor to execute any of the energy efficiency parameter determination methods for generator-motors provided in the embodiments of the present invention. The computer program can execute the following steps of the energy efficiency parameter determination method for generator-motors:

[0137] Obtain the full characteristic curve dataset of the electronic device to be optimized. The full characteristic curve dataset includes multiple first operating point data of the electronic device, and the first operating point data includes multiple operating parameters.

[0138] Obtain the stator voltage and stator current of the generator motor under the target operating conditions for the energy efficiency parameters to be determined;

[0139] Based on the stator voltage and the stator current, predict the stator current phase angle of the generator motor under the target operating condition;

[0140] Based on the current phase angle, an iterative calculation is performed to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship.

[0141] The target energy efficiency parameters of the generator motor are determined based on the target current phase angle.

[0142] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0143] The computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0144] Since the computer program stored in the computer-readable storage medium can execute any of the energy efficiency parameter determination methods for generator motors provided in the embodiments of the present invention, the beneficial effects that the energy efficiency parameter determination methods for generator motors provided in the embodiments of the present invention can achieve can be realized. For details, please refer to the previous embodiments, which will not be repeated here.

[0145] In the above embodiments of the generator-motor energy efficiency parameter determination device, computer-readable storage medium, electronic device, and computer program product, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process and beneficial effects of the generator-motor energy efficiency parameter determination device, computer-readable storage medium, computer program product, electronic device, and their corresponding units described above can be referred to the description of the generator-motor energy efficiency parameter determination method in the above embodiments, and will not be repeated here.

[0146] The foregoing has provided a detailed description of the method for determining the energy efficiency parameters of a generator motor, the device for determining the energy efficiency parameters of a generator motor, the electronic device, the computer-readable storage medium, and the computer program product provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for determining the energy efficiency parameters of a generator motor, characterized in that, include: Obtain the stator voltage and stator current of the generator motor under the target operating conditions for the energy efficiency parameters to be determined; Based on the stator voltage and the stator current, predict the stator current phase angle of the generator motor under the target operating condition; Based on the current phase angle, an iterative calculation is performed to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship. The target energy efficiency parameters of the generator motor are determined based on the target current phase angle. The step of predicting the stator current phase angle of the generator motor under the target operating condition based on the stator voltage and the stator current includes: Based on the stator voltage and the stator current, determine the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition; Based on the phase difference and the operating mode of the generator motor in the target operating condition, the current phase angle of the stator of the generator motor under the target operating condition is predicted; The step of iteratively calculating based on the current phase angle to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship, includes: When the three-phase alternating current corresponding to the current phase angle is applied to the stator of the generator motor and the DC excitation current is applied to the rotor of the generator motor, the simulated torque of the generator motor is calculated. If the simulated torque of the generator motor does not reach the rated torque, the step of calculating the simulated torque of the generator motor is performed again when the current phase angle is adjusted and the three-phase AC current corresponding to the current phase angle is applied to the stator of the generator motor and the DC excitation current is applied to the rotor of the generator motor. When the simulated torque of the generator motor reaches the rated torque, the latest current phase angle is obtained as the target current phase angle; Determining the target energy efficiency parameters of the generator motor based on the target current phase angle includes: Obtain a three-dimensional simulation model of the generator motor; The target current phase angle is applied to the coupling circuit of the three-dimensional simulation model for calculation to obtain the target energy efficiency parameters of the generator motor.

2. The method as described in claim 1, characterized in that, Determining the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition based on the stator voltage and the stator current includes: Based on the stator voltage, the stator current, and the corresponding phase difference derivation formula under the target operating condition, the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition is determined.

3. The method as described in claim 2, characterized in that, The target operating condition includes either a delayed phase or a leading phase, and the derivation formula for the phase difference corresponding to the delayed phase is as follows: ； The corresponding phase difference derivation formula is as follows: ； in, The stator current, The stator voltage, The quadrature-axis reactance of the generator motor is... The power factor angle of the generator motor is given.

4. The method as described in claim 1, characterized in that, The method of predicting the stator current phase angle of the generator motor under the target operating condition based on the phase difference and the operating mode of the generator motor under the target operating condition includes: When the operating mode is generator mode, the sum of the phase difference and the right angle is used as the predicted current phase angle; When the operating mode is motor mode, the sum of the phase difference and the right angle is used as the predicted current phase angle.

5. A device for determining the energy efficiency parameters of a generator motor, characterized in that, The device for determining the energy efficiency parameters of the generator motor includes: The acquisition module is used to acquire the stator voltage and stator current of the generator motor under the target operating conditions of the energy efficiency parameters to be determined; The prediction module is used to predict the current phase angle of the stator of the generator motor under the target operating condition based on the stator voltage and the stator current. An iterative module is used to perform iterative calculations based on the current phase angle to determine the target current phase angle of the stator of the generator motor under the target operating condition, which conforms to the motor flux linkage relationship. The determining module is used to determine the target energy efficiency parameters of the generator motor based on the target current phase angle; The prediction module is further used for: Based on the stator voltage and the stator current, determine the phase difference between the magnetomotive force and the stator current of the generator motor under the target operating condition; Based on the phase difference and the operating mode of the generator motor in the target operating condition, the current phase angle of the stator of the generator motor under the target operating condition is predicted; The iteration module is also used for: When the three-phase alternating current corresponding to the current phase angle is applied to the stator of the generator motor and the DC excitation current is applied to the rotor of the generator motor, the simulated torque of the generator motor is calculated. If the simulated torque of the generator motor does not reach the rated torque, the step of calculating the simulated torque of the generator motor is performed again when the current phase angle is adjusted and the three-phase AC current corresponding to the current phase angle is applied to the stator of the generator motor and the DC excitation current is applied to the rotor of the generator motor. When the simulated torque of the generator motor reaches the rated torque, the latest current phase angle is obtained as the target current phase angle; The determining module is also used for: Obtain a three-dimensional simulation model of the generator motor; The target current phase angle is applied to the coupling circuit of the three-dimensional simulation model for calculation to obtain the target energy efficiency parameters of the generator motor.

6. An electronic device, characterized in that, It includes a processor and a memory, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the method for determining the energy efficiency parameters of any of the generator motors described in claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a computer program that, when run on an electronic device, causes the electronic device to perform the steps of the method for determining the energy efficiency parameters of any one of the generator motors described in claims 1-4.

Images