Maximum Torque Per Ampere Algorithm for Five-Phase Synchronous Reluctance Machines

This article presents a maximum torque per ampere strategy for a five-phase synchronous reluctance drive. The approach is developed considering general machine parameters and is formalized as a constrained optimization problem. The optimal solution is found analytically by using Lagrange's mult...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2022-10, Vol.69 (10), p.9721-9730
Main Authors: Cervone, Andrea, Dordevic, Obrad
Format: Article
Language:English
Subjects:
Algorithms
Eigenvalues
Eigenvectors
Electromagnetics
Harmonic analysis
Inductance
Losses minimization
Mathematical models
maximum torque per ampere (MTPA)
multiphase machines
Optimization
Reluctance machinery
Rotors
synchronous reluctance machines
Torque
Voltage
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Summary:This article presents a maximum torque per ampere strategy for a five-phase synchronous reluctance drive. The approach is developed considering general machine parameters and is formalized as a constrained optimization problem. The optimal solution is found analytically by using Lagrange's multipliers method and is based on the computation of the eigenvalues and eigenvectors of the inductance derivatives matrix. The proposed approach is evaluated both numerically and experimentally. It is also compared with other current references control strategies, effectively showing a reduction of the machine rms currents for the same developed torque. The same approach can also be extended to machines with a different number of phases.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2021.3135631