Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 69, Issue 10, Pages 9721-9730Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2021.3135631
Keywords
Torque; Harmonic analysis; Rotors; Mathematical models; Voltage; Electromagnetics; Standards; Losses minimization; maximum torque per ampere (MTPA); multiphase machines; synchronous reluctance machines
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This article presents a maximum torque per ampere strategy for a five-phase synchronous reluctance drive, which is developed based on general machine parameters and formalized as a constrained optimization problem. The optimal solution is found analytically using Lagrange's multipliers method and is based on the computation of the eigenvalues and eigenvectors of the inductance derivatives matrix. The proposed strategy is evaluated both numerically and experimentally, and it effectively reduces the machine rms currents for the same developed torque, showing its superiority over other current references control strategies. This approach can also be extended to machines with a different number of phases.
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.
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