Open loop low speed control for PMSM in high dynamic applications

Student thesis: Master thesis (including HD thesis)

  • Cristian Busca
4. term, Energy Engineering, Master (Master Programme)
Nowadays sensor-less motor control is a hot topic for re-
searchears due to its numerous advantages. The focus of
this project is the sensor-less control of a surface mounted
PMSM (SMPMSM) for low speed in high dynamic ap-
plications. First the literature is searched for a suitable
sensor-less control strategy and then the selected strategy
is implemented and tested in simulations. The sensor-less
control strategy is then validated in the laboratory. For
all the simulation Matlab=Simulink and Plecs is used.
For the laboratory work a dSpace setup is used. Even if
the topic of the project is sensor-less control, simulations
and laboratory work is carried out for both sensored and
sensor-less control of the SMPMSM in order to compare
the results. Moreover the control of the loading machine
is realized in order to be able to test the SMPMSM con-
trol under loading conditions. The performance of the
selected sensor-less control strategy is tested and com-
pared with the sensored control in ve dierent study
cases. Promising results are obtained in the laboratory
at zero and low speeds. The rotor position estimation er-
ror becomes larger as the load torque and speed increases.
Good results were obtained at speeds up to 200rpm.
Publication date2 Jun 2010
Number of pages111
Publishing institutionAalborg University, IET
ID: 32306483