Generate idiq table based on MTPA/MTPV algorithm for PMSM permanent magnet synchronous motor for electric vehicles

nuaa168

Generate idiq table based on MTPA/MTPV algorithm for PMSM permanent magnet synchronous motor for electric vehicles [Copy link]

 

It is mainly aimed at the vector control of built-in permanent magnet synchronous motors for new energy electric vehicles, and mainly provides a solution for how to obtain the core algorithm MTPA/MTPV current reference instruction. In actual engineering applications, since the inductance parameters of permanent magnet synchronous motors change significantly with current, several groups of motor inductance parameters are first calibrated offline (or several groups of inductance parameters are provided by motor electromagnetic simulation engineers), and then this case is used to generate an idiq table that meets MTPA/MTPV control. That is, the current idref/iqref table lookup method is the most effective method, and the solution using a weak magnetic ring will always have a dynamic adjustment process, and the motor output current overcurrent phenomenon will occur, especially when the voltage utilization rate of the DC side is insufficient at high speed weak magnetic field. This solution uses pure MATLAB M scripts to automatically solve the high-efficiency (id, iq) working point, and generate a current reference instruction table to meet MTPA/MTPV curve control. At the same time, it can also reduce the workload of engineers for motor calibration. Note: This case has been experimentally verified on a real vehicle, and the output external characteristics of the motor can meet customer needs and meet product-level development.

In addition: This case can also be applied flexibly, using only idmap, iq instructions to calculate through the motor torque equation, but pay special attention to the torque output capacity under different speeds and voltages.

Note: Added explanation of the corresponding relationship between the generated id/iqmap and the MTPA/MTPV curve to help learners understand the optimal control of automotive PMSM.

Built-in permanent magnet motor drive control solution:

Input of raw data of built-in permanent magnet motor:

Run related M scripts

Solve and generate MTPA/MTPV ID and iq Map

The generated raw data files are idmap.csv and iqmap.csv.

Finally, the data table is converted into idmap.c and iqmap.c files. These two .c map files can be applied to MCU software program development based on the interpolation table lookup algorithm, or the .csv file can be directly imported into the lookuptable module in simulink for MTPA/MTPV model simulation.

newdrive

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liang007

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nuaa168

PMSM MTPA_MTPV simulation model uses R2017a

chitu832

Thanks for sharing

zhanwt168

chitu832 posted on 2018-6-25 10:52 Thank you for sharing

Keep up the good work!

dengxiangxi

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PCB制作

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chenfu0814

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generalcircuits

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bhddl

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qliuxing

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毛先森

Hello, can you share a program to generate a query table? Thank you 1678337443@qq.com

毛先森

Hi, can you share the program?

guilinziyu

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zxdragon

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ronalback

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Darren52

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jianyun2009

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huafeixue8

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