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Propulsors with outboard drives (PODs) are propeller propulsion units situated under the hull of a marine vessel. They contain an electric motor which is directly connected to the propeller. With the absence of the gearbox, higher efficiency, lower noise and vibration can be achieved. Presently, the wound rotor synchronous motors dominate a large share of the podded propulsion market due to their...
This paper explores some of the characteristics and limitations of the series configuration of hybrid excitation synchronous machine (HESM) compared to the wound field synchronous machine (WFSM). It also explores the influence of magnet excitation to field excitation ratio on their performances. The WFSM is a conventional salient pole synchronous motor, and the HESM consists of conventional salient...
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