Designing a Three Phase Inverter for a Permanent Magnet Synchronous Motor
Dautermann, Lars (2013)
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2013090114870
https://urn.fi/URN:NBN:fi:amk-2013090114870
Tiivistelmä
The motivation for this thesis is to provide a three phase inverter for an electric car in the Formula Student. Designing an inverter is a challenge that requires combined
knowledge in microcontroller programming, pcb layout, electric analysis and the principals of how to control a motor.
The theory of electrical motors and especially permanent magnet synchronous motors is shortly introduced. The physical and electrical characteristics were studied to understand how the motor can be controlled with a three phase inverter.
The schematics, the design of drivers and safety features for the switching elements in the inverter are shown.
The software to control the inverter and to communicate with other devices in a car to obtain the information about the desired torque and power is explained.
A model of a space vector control in Matlab is simulated.
The advantages and disadvantages of different control methods like direct torque control and field oriented control are discussed.
During the study of the thesis two inverter designs were designed. A low voltage, low power version to study the concept and a high voltage, high power version for the
practical usage in the car. Due to the limitation of time only the low voltage inverter is built and demonstrated.
knowledge in microcontroller programming, pcb layout, electric analysis and the principals of how to control a motor.
The theory of electrical motors and especially permanent magnet synchronous motors is shortly introduced. The physical and electrical characteristics were studied to understand how the motor can be controlled with a three phase inverter.
The schematics, the design of drivers and safety features for the switching elements in the inverter are shown.
The software to control the inverter and to communicate with other devices in a car to obtain the information about the desired torque and power is explained.
A model of a space vector control in Matlab is simulated.
The advantages and disadvantages of different control methods like direct torque control and field oriented control are discussed.
During the study of the thesis two inverter designs were designed. A low voltage, low power version to study the concept and a high voltage, high power version for the
practical usage in the car. Due to the limitation of time only the low voltage inverter is built and demonstrated.