Field-oriented control of a nine-phase cage induction generator with large speed changes and variable load
Autor
Cholewa, Dariusz
Drozdowski, Piotr
Opublikowane w
Energies
Numeracja
17(4), 790
Data wydania
2024
Miejsce wydania
Basel, Switzerland
Wydawca
MDPI AG
Język
angielski
DOI
https://doi.org/10.3390/en17040790
Słowa kluczowe
multiphase cage induction generator. DC output voltage field-oriented control. stator supply sequence switching. wind turbine mechanical characteristics. multiphase converter control
Abstrakt
This paper presents a voltage control system for multiphase squirrel-cage induction generators operating at a high variability of speed and variable load. Field-oriented vector control was used with a change in the sequence of the stator phase currents what changes the number of poles of the magnetic field produced by nine-phase stator winding. At low speeds, the current sequence is changed so that the number of poles increases allowing for the desired voltage to be obtained with greater efficiency. The task of the automatic control system was to control the DC voltage to a desired value at the output of the multiphase PWM converter. This is an alternative control method to the scalar control of voltage and frequency presented in a previous work. The control method and parameters of the automatic control system result from the mathematical model of the multiphase induction machine. The results of the laboratory tests were compared with the effects of the operation of the same nine-phase scalar controlled generator.
