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Nine-Phase Six-Terminal Induction Machine Modeling Using Vector Space Decomposition
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DOI：10.1109/TIE.2018.2833041.png)
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The nine-phase six-terminal induction machine (IM) has been recently proposed as a promising contender to the conventional asymmetrical six-phase type in terms of torque density, stator winding simplicity, and fault-tolerant capability. The stator is composed of nine phases, which are connected in a fashion to only provide six stator terminals. Therefore, this connection combines the high performance of a nine-phase winding with the terminal behavior of a six-phase machine. This paper introduces the machine mathematical model based on the vector space decomposition (VSD) modeling approach. The required current and voltage sequence transformation matrices are derived such that the machine is mathematically regarded as an equivalent six-phase IM with only three decoupled sub-spaces. This way, the same VSD-based controller structures conventionally applied to six-phase-based systems can be preserved. A 1.5-hp prototype IM is used to experimentally validate the machine model under both healthy and open-phase conditions.
Keyword:
Asymmetrical six-phase winding
dynamic modeling
fault-tolerant operation
high-power machines
nine-phase machine
vector space decomposition (VSD)
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7.2
论文数:
1.8W
被引数:
9.8W
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