Fault-tolerant Control for Non-sinusoidal Multiphase Drives with Minimum Torque Ripple

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Vu, Duc Tan | Nguyen, Ngac Ky | Semail, Eric

Edité par HAL CCSD ; Institute of Electrical and Electronics Engineers

International audience. For non-sinusoidal electromotive force (NS-EMF) multiphase machines, this paper proposes a new strategy and control scheme to guarantee smooth torque under an open-phase fault. Notably, the conventional proportional-integral (PI) 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-trainedAdaptive Linear Neuron (ADALINE). Indeed, the inputs of ADALINE require the knowledge of rotor position and NS-EMFharmonic rank to optimize the learning time. The proposed strategy and control scheme are tested on a seven-phase machinewith 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 paper. This paper isaccompanied by a video demonstrating the experimental results.

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