Five-Phase Permanent Magnetic Synchronous Motor Fed by Fault Tolerant Five Phase Voltage Source Inverter

Multiphase machines have gained attention in numerous fields of pplications such as Aircraft, ship propulsion, petrochemical and automobiles, where high reliability is required. The additional number of phases guarantees that the system continues to operate in faulty conditions compared to the traditional three-phase machine due to the high degree of freedom. Among faults able to affect multiphase system, break between a machine phase and the voltage source inverter (VSI) degrade the performance of the control. In this paper, a five-phase permanent magnet synchronous machine (PMSM) is fed through a fault tolerant voltage source inverter with new structure to ensure drive continuity when open circuit occurs. The five phase PMSM is controlled with fuzzy logic regulator to minimize disturbance impact that can arise fault condition. Paper is accomplished with real time simulations using MATLAB-Simulink in order to validate the new topology and show the effectiveness of the proposed solution

Fault tolerant control strategy of a five-phase permanent magnet synchronous motor drive

This paper deals with fault tolerant control strategy of a five-phase permanent magnet synchronous motor (PMSM) drive. The fault tolerant control enables the machine to operate without additional hardware during post fault condition. The solution is to keep an unchanged MMF under open circuit fault by controlling currents in healthy phases. 2015 IEEE.Scopu

Sensorless indirect rotor flux oriented control of a five-phase induction motor based on sliding mode observer

In this paper, a new sliding mode observer is developed for the indirect rotor flux oriented control (IRFOC) of a Five-phase Induction motor drive. Numerous observer structures for Five-phase induction motor drive is presented in the literature with acceptable performances. However, the objective of this work is to develop and test another family of observers based on the sliding mode approach. This structure is considered as a high gain observer which gives firstly good dynamic performance and secondly high robustness. The shortcoming of the sliding mode observer (SMO) is the chattering phenomena. It seems that the chattering problem can be reduced by replacing the signum function by saturation function in the observer structure. To grantee the closed-loop stability of the proposed observer control, stability analysis based on the Lyapunov theory is presented. Simulations results demonstrate and justify the validity of the proposed structure observer. 2015 IEEE.Scopu

An improved sensorless sliding mode control/adaptive observer of a five-phase permanent magnet synchronous motor drive

This paper presents a new sliding mode observer (SMO) for sensorless sliding mode control (SMC) of five-phase permanent magnet synchronous motor (PMSM) with online stator resistance estimation. The proposed approach is shown to guarantee stability in the sense of Lyapunov context. The sliding mode controller considers the nonlinearities of the system. The sliding mode control strategy is developed using an integral switching surface. A sliding mode observer is proposed for the rotor speed and stator resistance estimation under assumptions that only the stator currents and voltages are available for measurement. The effectiveness of the proposed strategy has been successfully verified through simulation results. 1 2017, Springer-Verlag London.Scopu

Experimental validation of a numerical 3-D finite model applied to wind turbines design under vibration constraints: TREVISE platform

With the advancement of wind turbines towards complex structures, the requirement of trusty structural models has become more apparent. Hence, the vibration characteristics of the wind turbine components, like the blades and the tower, have to be extracted under vibration constraints. Although extracting the modal properties of blades is a simple task, calculating precise modal data for the whole wind turbine coupled to its tower/foundation is still a perplexing task. In this framework, this paper focuses on the investigation of the structural modeling approach of modern commercial micro-turbines. Thus, the structural model a complex designed wind turbine, which is Rutland 504, is established based on both experimental and numerical methods. A three-dimensional (3-D) numerical model of the structure was set up based on the finite volume method (FVM) using the academic finite element analysis software ANSYS. To validate the created model, experimental vibration tests were carried out using the vibration test system of TREVISE platform at ECAM-EPMI. The tests were based on the experimental modal analysis (EMA) technique, which is one of the most efficient techniques for identifying structures parameters. Indeed, the poles and residues of the frequency response functions (FRF), between input and output spectra, were calculated to extract the mode shapes and the natural frequencies of the structure. Based on the obtained modal parameters, the numerical designed model was up-dated