Control of Permanent Magnet Synchronous Machine/BLDC in generator mode

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Supervisor:
Dr. Stumpf Péter Pál
Department of Automation and Applied Informatics

The various types of electrical drives have seen a significant growth in their usage in the automotive industry in the recent years. Permanent magnet synchronous machines and brushless direct current motors are used in both servo applications and in the vehicle’s powertrain in case of hybrid or fully electrical cars. This growth was mainly made possible by the significant developments in the power electronics field, which reduced the price of electrical converters and substantially improved their quality. These converters are crucial for the efficient control of these type of machines. Electric motors have several advantages over regular internal combustion engines, both from an economical and technical point of view, which also accelerated their growth. Hybrid vehicles could help the transition from today’s cars with internal combustion engines to fully electric vehicles by combining the familiar engines with the new technology, and showing the possibilities provided by the electric drives.

The aim of this project is to create a control for the electrical part of a go-kart’s hybrid drive and test it using computer simulations. The paper starts from creating the motor model and shows the steps of the development, supported by the theoretical background. The simulation results are presented in detail and compared to the theory. Special attention is paid to the generator mode of the motor. The laboratory measurements of the motor are also presented and the possibilities for implementing the control algorithm on a real hardware setup are briefly investigated. Future plans and further development possibilities are mentioned at the end.

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