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Two approaches are presented in this paper to estimate the state of an induction motor and detect faults: a geometric approach, assuming only that the perturbations belong to known bounded sets with no hypothesis on their distributions inside these sets, and a stochastic approach by Kalman filtering. Recursive and explicit algorithms are presented and(More)
The paper presents an electrical reduced-order model for real-time purposes. This model allows taking easily into account iron losses. Several model extensions for a Kalman filter are defined, in the objective of the thermal monitoring of the induction machine, in real-time. An accurate experimental set-up is presented and machine model identification is(More)
This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, redistribution , reselling , loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents(More)
Proving the stability of a discrete{time implementation of the standard eld{oriented control (FOC) of induction motors is an open problem of great practical and theoretical signiicance. In a recent paper a modiication to the FOC was introduced to rigourously establish global asymptotic speed regulation and rotor ux norm tracking for current{fed machines. In(More)
This paper highlights the energy errors made for the design of supercapacitors used as a main energy source. First of all, the paper presents the two definitions of capacitance of a capacitance-voltage dependent material. The number of supercapacitors is important for the application purchasing cost. That is why the paper introduces an analytical model and(More)
A sensorless control of a high-speed synchronous reluctance motor is proposed in this paper. The control of high-speed motors requires very short sampling periods. Therefore a classical Extended Kalman Filter (EKF) would require an excessive calculation power. To minimize this computational power, an original EKF based on a particular motor model is(More)
This paper deals with the use of an extended Kalman filter (EKF) for the temperature observation of an induction starter generator. At first, we remind considerations about temperature supervision. Then we present a classical method based on a parameter observer. Problems encountered with such an observer are presented in the framework of our application.(More)