Pmsm phd thesis format

As it known, these types of here depend on a 3-phase time-dependent voltage source 3-Phase Pmsm phd thesis format supply voltages that generates a magnetic flux in the air-gap of the machine.

This generated magnetic flux interacts with the permanent magnetic flux on the rotor, to generate the required torque. The mathematical model thesis format this motor is pmsm phd thesis format non-linear time-varying system.

Sensorless Pmsm Thesis

To apply different control techniques, we transform this model to an equivalent linear time-invariant system. These transformations not only yield a linear time-varying model, but also, reduce the number of states in the model. Classical control techniques, such format PI control, can provide a speed tracking of this type of motors with some limitations. In general, the performance of the motor is limited in term of the range of speed and the range of applied load pmsm phd thesis format. Also, the performance is affected by parameter variations or the high frequency, un-modeled states.

In this project, a sliding-mode controller is used due to its pmsm phd thesis format to the variations of the parameters. These types of controllers employ sliding surface, passing pmsm phd thesis format the origin on the system trajectories plane.

Once the system trajectory hits the sliding surface, they remain on it, and exhibiting stable operation. The conventional sliding pmsm phd thesis format are gained by a fixed constant which makes the control input exhibit a chattering phenomena.

The proposed gain in this project thesis format a smooth function, depending on the pmsm phd thesis format value to eliminate the chattering phenomena soft switching mechanism.

The primary problem with this design is source steady state error when a full-load torque is applied motor.

Sensorless Pmsm Thesis

This is overcome by designing an observer to estimate the load torque. Committee Malcolm Daniels, Ph.

Advisor Raul Ordonez, Ph. Committee Member John Loomis, Ph. Subject Headings Electrical Engineering.

Electronic Thesis pmsm phd thesis Dissertation. University of Thesis format,