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Publications

Publications by Manuel Fernando Pereira

2020

Switched Reluctance Motor Drives: Fundamental Control Methods

Authors
Fernando Sequeira Pereira, M; Mamede, A; Esteves Araújo, R;

Publication
Modelling and Control of Switched Reluctance Machines

Abstract

2020

A back-EMF estimation method for a switched reluctance motor using model predictive control

Authors
Pereira, M; Melo, P; Araujo, RE;

Publication
2020 IEEE VEHICLE POWER AND PROPULSION CONFERENCE (VPPC)

Abstract
Switched reluctance machines are simple, robust, fault-tolerant and do not use permanent magnets, which makes them a strong candidate for vehicular propulsion. Despites the advantages they still suffer from high torque pulsation and acoustic noise, which can be reduced by the controller. In this paper the concern is in having an advanced current control, so it is used the model predictive control (MPC). This requires an accurate model to estimate the future behavior of current and the back-electromotive force (emf) signal is essential. As this signal cannot be directly calculated or measured it is proposed a new algorithm to calculate its estimation in real time. The algorithm is easy to implement and the numerical results show the accuracy of the method, which permits a very low current estimation error in the MPC framework. © 2020 IEEE.

2020

Model Predictive Current Control of Switched Reluctance Motor Drive: An Initial Study

Authors
Pereira, M; Araújo, RE;

Publication
IFIP Advances in Information and Communication Technology

Abstract
A considerable amount of research within the last few decades has been focusing on controllers for switched reluctance motor drives and how they affect the torque ripple. Despite all its potentials, there are still major concerns and obstacles to overcome concerning the dependency of the magnetic characteristic of the switched reluctance motor. This work targets these concerns by proposing an initial study of the fundamentals of a drive scheme using a finite set model predictive control for a switched reluctance motor through an asymmetric bridge converter. The implementation of this scheme is the main contribution of this paper. The method uses the dynamic model of the motor to estimate the future behavior of the current for each converter state. A cost function then evaluates which switching state minimizes the current error and applies it to the motor. Some simulation results illustrate the technique. Simulation results show the good performance of the method with fast and accurate transient response. © IFIP International Federation for Information Processing 2020.