Journal
2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
Volume -, Issue -, Pages 4024-4029Publisher
IEEE
DOI: 10.1109/tia.2020.2993525
Keywords
Synchronous Reluctance Motor (SynRM); Maximum Torque Per Ampere (MTPA); Rotor Oriented Control
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This paper proposes an analytical formulation of a maximum torque per ampere (MTPA) technique, accounting for the magnetic saturation of the iron core, specifically developed for Synchronous Reluctance Motors (SynRMs). The proposed MTPA is based on a magnetic saturation model of the SynRM, which has been obtained after simplifying a more complete magnetic model, including also cross saturation effects. This simplified magnetic model, and consequently the proposed MTPA, can be easily parameterized directly starting from a unique set of tests for the off-line identification of the motor, without the need for any complex, time consuming, and cumbersome finite element analysis (FEA) of the machine under test. The proposed MTPA has been tested experimentally on a suitably developed test set-up. Results clearly show that the proposed technique permits a significant increase of the torque per ampere (TPA) with respect to the case of the classic MTPA, which does not consider magnetic saturation. TPA increase varies from 5% at 3 Nm load to 18% at 12 Nm load.
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