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Control of a Permanent Magnet Synchronous Motor with Non-Sinusoidal Flux Density Distribution

Oskar Wallmark (Institutionen för elkraftteknik, Kraftelektronik och vindenergi)
[Examensarbete på avancerad nivå]

This thesis discusses various aspects of controlling a permanent magnet synchronous machine with a non-sinusoidal rotor flux density distribution. The transient model of the machine in the rotor oriented dq-frame is derived, including the non-sinusoidal effects. The design of current and speed controllers is also discussed. The current controller is implemented in a permanent magnet machine, intended for hybrid electric vehicle applications, yielding good results. An algoritm to estimate the rotor position, based on high frequency signal injection and a non linear observer, is also implemented with good results. The flux linkage harmonics are measured and the predicted torque and current ripple are verified by measurements.

Nyckelord: Current control, non-sinusoidal flux density, permanent magnet, sensorless control, signal injection, speed control, synchronous machine, torque ripple

Denna post skapades 2012-10-09. Senast ändrad 2013-04-04.
CPL Pubid: 164528


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Institutioner (Chalmers)

Institutionen för elkraftteknik, Kraftelektronik och vindenergi (1900-2004)



Chalmers infrastruktur

Ingår i serie

Examensarbete - Chalmers tekniska högskola, Institutionen för elteknik 59E