The Influence of the Time Phase Sequence of a Five-Phase Winding on the Formation of a Resultant Voltage Vector

Autor: I. L. Aitov, I. A. Makulov, D. A. Grishin, V. M. Tereshkin
Rok vydání: 2020
Předmět:
Zdroj: Russian Electrical Engineering. 91:786-791
ISSN: 1934-8010
1068-3712
Popis: The formation of a resultant voltage vector of a symmetrical five-phase ABCDE winding is considered when it is connected to a symmetrical five-phase voltage with an ACEBD time phase sequence. It is found that, with the ACEBD phase sequence, the space–time resultant voltage vector is a third harmonic vector, and the modulus of the space–time resultant voltage vector in the first harmonic is equal to zero. The rotation speed of the resultant voltage vector is three times greater than the frequency of the converter. Switching the AEDCB phase sequence to ACEBD leads to a discrete increase in the rotation speed of the resultant voltage vector by three times at a constant switching frequency of the converter keys. Using control algorithms of the converter, to which a symmetrical five-phase winding is connected, it is possible to amplify the third time harmonic of the phase voltage and to weaken the first time harmonic. The implementation of the algorithm amplifying the third phase voltage harmonic requires an increase in the number of commutations per period, while the switching frequency of the keys decreases.
Databáze: OpenAIRE
Externí odkaz: