Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 37, Issue 6, Pages 6290-6304Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2021.3133793
Keywords
Torque; Harmonic analysis; Circuit faults; PI control; Fault tolerant systems; Fault tolerance; Rotors; Adaptive linear neuron; fault-tolerant control; multiphase machine; nonsinusoidal electromotive force; reduced-order transformation; seven-phase machine
Categories
Funding
- CE2I Project
- European Union
- European Regional Development Fund
- French State
- French Region of Hauts-de-France
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This article proposes a new strategy and control scheme for nonsinusoidal electromotive force (NS-EMF) multiphase machines to ensure smooth torque under an open-phase fault. The strategy is based on reduced-order transformations and the control scheme utilizes a simple artificial intelligence algorithm. Numerical and experimental results demonstrate the feasibility of the proposed strategy and control scheme.
For nonsinusoidal electromotive force (NS-EMF) multiphase machines, this article proposes a new strategy and control scheme to guarantee smooth torque under an open-phase fault. Notably, the conventional proportional-integral controllers implemented for vector control in healthy mode can be used in the faulty mode. The strategy is based on reduced-order transformations while the control scheme applies a simple artificial intelligence algorithm using a specific online-trained adaptive linear neuron (ADALINE). Indeed, the inputs of ADALINE require the knowledge of rotor position and NS-EMF harmonic rank to optimize the learning time. The proposed strategy and control scheme are tested on a seven-phase machine with a strong total harmonic distortion (THD) of NS-EMFs, containing numerous harmonics Hk (THD = 38% with 100% H1, 32.3% H3, 9.4% H7, 12.5% H9, 10.3% H11). Numerical and experimental results are presented in this article. This article is accompanied by a video demonstrating the experimental results.
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