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Multiphase permanent magnet machines are becoming attractive alternative for a wide range of industry applications owing to their reliability, dynamic performances, and its greater degrees of fault tolerability compared to three-phase machines. In this context, diagnosing rotor magnets degradation at incipient stage is crucial to guaranty the required efficiency of the machines. In the present paper...
This paper presents an electric drive consisting of a multiphase induction motor fed by a multiphase inverter. The control system is similar to that of a traditional field-oriented control for three-phase motors, but the machine speed is estimated by a novel sensorless observer. Since multiphase motors with M phases (M is supposed odd) have the capability of controlling the odd spatial harmonics of...
Since late 1990s multiphase drives have become a serious alternative to three-phase drives in some particular applications such as electric ship propulsion, locomotive traction, electric vehicles and high power industrial applications. Nowadays the research activity is focused on the development of control strategies that can exploit the degrees of freedom that exist in multiphase machines. As known,...
This paper focuses on the analysis of a seven-phase voltage-source inverter for high-performance motor drives. The problem of the modulation strategy of the inverter is solved by combining the multiple space vector representation with traditional carrier-based pulsewidth modulation. This approach leads to the definition of a general modulation strategy that can be usefully utilized in multimotor drives,...
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