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Electric drive system efficient working area simulation method, device and equipment and storage medium

A technology of electric drive system and simulation method, which is applied in design optimization/simulation, electric digital data processing, special data processing application, etc., can solve problems such as difficulty and increase large experimental time, so as to reduce research and development costs and shorten experimental time. , the result is credible effect

Active Publication Date: 2021-07-23
华域麦格纳电驱动系统有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As a result, for the traditional method of counting the proportion of qualified discrete points and the total number, it is more difficult to obtain close to the true value, and the interval between the measurement points is required to be denser, and a large amount of experimental time needs to be increased to ensure the results credibility

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  • Electric drive system efficient working area simulation method, device and equipment and storage medium
  • Electric drive system efficient working area simulation method, device and equipment and storage medium
  • Electric drive system efficient working area simulation method, device and equipment and storage medium

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Embodiment 1

[0045]For the traditional method of counting the proportion of qualified discrete points and the total number to calculate the proportion of high-efficiency working area of ​​the electric drive system, it is difficult to obtain close to the real value, and the interval between measurement points is intensive, and it needs to be increased. Due to the problem of a large amount of experimental time, this embodiment proposes a simulation method for the high-efficiency working area of ​​the electric drive system. The simulation object of the simulation method is a three-dimensional surface determined by the torque, speed and efficiency of the electric drive system. Surface fitting is performed on the test data to establish a relatively accurate mathematical model, and then a large number of quasi-random numbers are generated by the quasi-Monte Carlo method for simulation calculations to obtain the total number of points in the actual output coverage area of ​​the electric drive syste...

Embodiment 2

[0114] This embodiment provides a simulation device for an efficient working area of ​​an electric drive system, please refer to Figure 7 , the simulation device of the high-efficiency working area of ​​the electric drive system includes:

[0115] The surface fitting module 1 is used to obtain the test data of the torque, speed and efficiency of the electric drive system, and perform surface fitting on the test data to obtain the target domain;

[0116] The simulation module 2 generates a large number of quasi-random numbers for simulation calculation by using the quasi-Monte Carlo algorithm, and obtains the total number of points that the electric drive system actually outputs to cover the target domain, which is recorded as the first statistical value; statistics cover the target The total number of points in the domain that meet the requirements of the high-efficiency working area is recorded as the second statistical value; the ratio of the second statistical value to the...

Embodiment 3

[0124] The above-mentioned embodiment 2 describes in detail the simulation device of the high-efficiency working area of ​​the electric drive system of the present invention from the perspective of modularized functional entities. The simulation device of the high-efficiency work area of ​​the electric drive system of the present invention is described in detail below from the perspective of hardware processing.

[0125] Please see Figure 8 The simulation device 500 of the high-efficiency working area of ​​the electric drive system may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 510 (for example, one or more processors) And memory 520, one or more storage media 530 (such as one or more mass storage devices) for storing application programs 533 or data 532 . Wherein, the memory 520 and the storage medium 530 may be temporary storage or persistent storage. The program ...

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Abstract

The invention discloses an electric drive system efficient working area simulation method, device and equipment and a storage medium. When the proportion of the efficient working area of the electric drive system is calculated by using a traditional method of counting discrete points meeting conditions and the proportion of the total number, the difficulty of obtaining a value close to the true value is large. In order to solve the problem that a large amount of experiment time needs to be increased due to the fact that the interval requirement of measuring points is dense, the invention comprises performing curved surface fitting on limited discrete test data by simulating a three-dimensional curved surface determined by the torque, the rotating speed and the efficiency of an electric drive system; establishing a relatively accurate mathematical model, generating a large number of quasi-random numbers by using a quasi-Monte Carlo method to perform analog calculation, and obtaining the total number of actual output coverage area points of the electric drive system; meanwhile, counting points meeting target efficiency (efficient working area efficiency requirements), and the ratio of the two being the efficient working area proportion. The method meets the GB18488 standard requirement, the test time can be shortened, the research and development cost can be reduced, and meanwhile, the result is credible.

Description

technical field [0001] The invention belongs to the technical field of electric drive systems, and in particular relates to a simulation method, device, equipment and storage medium for a high-efficiency working area of ​​an electric drive system. Background technique [0002] The efficiency test of the new energy vehicle electric drive system is an important part of the drive motor type test. The drive motor system efficiency measurement includes drive controller efficiency measurement, drive motor efficiency measurement, and electric drive overall system efficiency measurement. Some of the parameters involved include: drive motor controller DC bus voltage and current; drive motor voltage, current, and electrical power; drive motor torque, speed, and mechanical power; drive motor, drive motor controller, or drive motor system efficiency . [0003] According to the requirements of GB18488.2-20157.2.5 high-efficiency work area, calculate the percentage of the work area that ...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/17G06F30/20G06F119/02
CPCG06F30/15G06F30/17G06F30/20G06F2119/02
Inventor 袁圆
Owner 华域麦格纳电驱动系统有限公司
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