Five-Phase Converter Control Algorithms for Implementing Space-Vector Modulation
DOI:
https://doi.org/10.24160/1993-6982-2021-4-86-94Keywords:
five-phase winding, phase time sequence, five-phase winding vector spaceAbstract
Multiphase (five-phase) motors can be considered as an alternative to three-phase motors in implementing electric traction with vector control.
The subject of the study is the five-phase winding voltage vector space formed by various control algorithms of a five-phase converter.
Thirty logical states of the converter form three types of the vector voltage space of a symmetrical five-phase winding. Each of the vector space types forms the resulting vector of a certain value. The resulting (generalized) voltage vector can take three different values.
With the phase time sequence ABCDE of a symmetrical five-phase winding ABCDE with the spatial phase shift equal to 72 electrical degrees, the fundamental harmonic vector is the resulting working voltage vector.
With the phase time sequence ACEBD of a symmetrical five-phase winding ABCDE with the spatial phase shift equal to 72 electrical degrees, the resulting voltage vector of the third harmonic is the resulting working vector.
The rotation frequency of the resulting third harmonic vector is three times the rotation frequency of the fundamental harmonic vector, and the rotation direction is opposite to the rotation direction of the fundamental harmonic vector. With one of the phase voltage forms and the phase time sequence ACEBD, the modulus of the resulting voltage vector of the third harmonic component is equal to the modulus of the resulting vector of the fundamental harmonic component. There are two converter control algorithms that form the resulting voltage vectors that are equal in modulus, but with different rotation speeds multiple of three.
An approach to studying the multiphase phase winding voltage vector space has been elaborated, which can be applied in implementing vector control.
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Для цитирования: Терешкин В.М., Гришин Д.А., Терешкин В.В., Балгазин И.И. Алгоритмы управления пятифазного преобразователя, реализующие пространственно-векторную модуляцию // Вестник МЭИ. 2021. № 4. С. 86—94. DOI: 10.24160/1993-6982-2021-4-86-94.
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For citation: Tereshkin V.M., Grishin D.A., Tereshkin V.V., Balgazin I.I. Five-Phase Converter Control Algorithms for Implementing Space-Vector Modulation. Bulletin of MPEI. 2021;4:86—94. (in Russian). DOI: 10.24160/1993-6982-2021-4-86-94.
