Torque optimization of seven phase BLDC machines in normal and degraded modes with constraints on current and voltage
Conférence invitée
Date
2018Résumé
This paper proposes several easy-to-implement control strategies when seven-phase axial flux brushless DC machines with trapezoidal back electromotive forces operate in normal and faulty modes by taking into account constraints on voltage and current. The constraints are related to the converter and machine design in terms of maximum values of current and voltage. The considered faults are cases in which one or two phases of the machine are open-circuited. Numerical computations based on analytical formulations are applied to obtain torque-speed characteristics, including the fluxweakening operation. The methods determine current references to ensure the torque optimizations while currents and voltages are within their limits. The usefulness of the methods is verified by numerical results.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Article dans une revue avec comité de lectureVU, Duc Tan; DOS SANTOS MORAES, Tiago Jose; SEMAIL, Eric; NGUYEN, Ngac Ky (Institution of Engineering and Technology, 2019)In the context of future Permanent Magnet Synchronous Machines (PMSMs) with a high number of phases (>7) in integrated drives, this paper proposes several control strategies when multiphase PMSMs with non-sinusoidal back ...
-
Conférence invitéeZHANG, Hao; ZHAO, Benteng; GONG, Jinlin; XU, Yanliang; VU, Duc Tan; SEMAIL, Eric; DOS SANTOS MORAES, Tiago José; NGUYEN, Ngac Ky (IEEE, 2019)Compared to sinusoidal machines, a bi-harmonic machine (with only two harmonics of similar value in the electromotive force spectrum) can develop torque of comparable values under three kinds of supply: with only first or ...
-
Communication avec acteTorque density is usually improved by injecting the third current harmonic for five-phase permanent magnet synchronous machine (PMSM). It increases the degrees of freedom of a multiphase drive. However, it also separates ...
-
Communication avec acteYANAGIHARA, Keitaro; VU, Duc Tan; GONG, Jinlin; SEMAIL, Eric; DOS SANTOS MORAES, Tiago José; NGUYEN, Ngac Ky (IEEE, 2019)This paper presents new fault-tolerant control strategies for field-oriented control of 7-phase non-sinusoidal permanent magnet (PM) machines supplied by voltage source inverters (VSI). Single phase open-circuit fault is ...
-
Communication avec acteDOS SANTOS MORAES, Tiago José; MEINGUET, Fabien; GUERIN, Mael; SEMAIL, Eric; NGUYEN, Ngac Ky (SGE 2016, 2016)Dans le cadre d’une commande en mode dégradé d’un entrainement comprenant deux machines polyphasées connectées en série et pilotées de façon indépendante, l’article s’intéresse à analyser la performance de l’entrainement ...