Identification of Permanent Magnet Synchronous Motor in Autobox Environment

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Dr. Sütő Zoltán
Department of Automation and Applied Informatics

The aim of the project is to determine the electrical parameters of the Permanent Magnet Synchronous Motor (PMSM). The use of the synchronous motor can be found in many places in the industry. The investigated synchronous motor is used in practice as applied electric assistance in steering gears.

Permanent Magnet Synchronous Motor in the final project task is the part of the Electric Power Assisted Steering, which we can find nowadays in steering system of most vehicles. I dealt with other kinds of assistance methods in my thesis, and I studied the advantages and disadvantages of the power assisted steering systems lengthily.

I have studied the Electronic Control Unit (ECU) and the Permanent Magnet Synchronous Motor of the Electric Power Assisted Steering closely. Motor control can be found in my work, because the synchronous motor is controlled by Pulse Width Modulation (PWM). Identifying the exact parameters of the synchronous motor was the main purpose of my thesis, which was based on the Matlab environment and inverter drive. I made the used model in Matlab Simulink program.

In my thesis I used the AutoBox, a well-known program in the automotive industry for running motor models. The motor’s inverter is driven by the AutoBox. The three phase current and voltage is regulated by AutoBox.

After the motor control of the synchronous motor, I created the required measurements for identification on the basis of the presented arrangement. The measurements are included in my thesis. I made measuring scripts for the measurements, which are carried out in an automated measurement. My goal with the measurements was to identify the motor and to design motor control as good as possible. The comparing and evaluating of the measurement will create more precise control in the future, which promotes safer motor control, and with the implementation of the most efficient and more precise powertrains.

In the following contest I will present the result of the work at ThyssenKrupp Presta Hungary Kft.


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