Analysis of overload and sensorless control capability of PM-assisted synchronous reluctance machines
| Autor: | Francesco Cupertino, Paolo Cagnetta, Simone Ferrari, Paolo Pescetto, Gianmario Pellegrino, Riccardo Leuzzi |
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| Rok vydání: | 2017 |
| Předmět: |
Engineering
synchronous reluctance motor permanent magnet motor Magnetic reluctance business.industry Stator overload 020208 electrical & electronic engineering Control engineering 02 engineering and technology Switched reluctance motor Automotive engineering Reluctance motor law.invention high-frequency voltage injection Direct torque control law demagnetization sensorless control 0202 electrical engineering electronic engineering information engineering Torque demagnetization high-frequency voltage injection overload permanent magnet motor sensorless control synchronous reluctance motor Synchronous motor business Induction motor |
| Zdroj: | 2017 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD). |
| DOI: | 10.1109/wemdcd.2017.7947743 |
| Popis: | Synchronous reluctance machines are a valid alternative to induction motors for industrial applications requiring variable speed regulation. To mitigate the well-known downside of their lower power factor, permanent-magnet-assisted topologies are adopted. Both high-strength rare-earth magnets and low cost ferrite magnets can be used in such machines. Their design and optimization procedures have been discussed in related literature. This paper compares synchronous reluctance machines assisted with NdFeB and ferrite magnets, focusing on torque overload capability and feasibility of saliency-based position estimation algorithms. Three prototypes were realized and tested. They all have the stator of a commercial induction motor, and three custom synchronous reluctance rotors with same laminations: one has no magnets, the other two have NdFeB and ferrite magnets respectively, designed to give the same torque at rated current. Results from simulations and experiments are presented, focusing on torque and demagnetization limits in the over-current loading range. Moreover, the feasibility of saliency-based sensorless methods is investigated, both at high and low current loads. The results of the paper suggest that the ferrite-assisted solution is the candidate solution for replacing induction motors in variable speed applications. |
| Databáze: | OpenAIRE |
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