Publications Scientifiques
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Item Design optimization of PMU Anti-Aliasing filters using taguchi method(2020) Dekhandji, Fatma ZohraA Phasor Measurement Unit (PMU) is a monitoring device, which serves in checking the power system condition by measuring voltage and current phasors along with frequency at a particular node. The basic structure of PMU consists of Synchronization Unit, Measurement Unit and Data Transmission Unit. The Measurement Unit has three components: Anti-aliasing filters, Analog-to-Digital Converter and Phasor measurement Unit/ Processor. An anti-aliasing filter ensures that all the analog signals have the same phase shift and attenuation thus assuring that the phase angle differences and relative magnitudes of the different signals are unchanged. Anti-aliasing filters made up of an analog front end and a digital decimation filter are far more stable as far as aging and temperature variations are concerned. IEEE C37.118 standard stipulates that it is mandatory to use the filter for avoiding any aliasing errors. Out of various analog filters, the Butterworth has been preferred due to its flat response in pass-band as compared to other filters. In this work, it is attempted to design anti-aliasing filters to be used in PMUs. The design problem is formulated as an optimization task that is solved using the Taguchi method. The results show better performance in terms characteristics compared to the conventional filters. The designed filters may be employed as building blocks in modern PMUsItem Hardware and software load power control in smart home applications based on Taguchi optimisation technique(Inderscience, 2018) Azzougui, Yasmina; Recioui, AbdelmadjidPower control is one of the concerns in smart grid implementation. The balance between the supplied power and the demand must be maintained so that blackouts are avoided. Smart metres play an important role in establishing this balance. On the other hand, power control implementation is a challenge as one would have to find the right mix between the hardware and the software parts. The purpose of this work is to optimise and implement a small power control system of home appliances. The objective of the optimisation is to reschedule some tasks if the power demand exceeds a certain peak level. The optimisation is based on Taguchi method which is known of its robustness and relatively fast convergence. The system casts a real life situation and can be considered as a small-scale prototype that can be extended to larger systemsItem Capacity optimization of MIMO wireless communication systems using a hybrid Genetic-Taguchi algorithm(Springer, 2013) Recioui, Abdelmadjid; Bentarzi, HamidItem Application of a hybrid taguchi-genetic algorithm to the multiobjective design optimization of Yagi-Uda antennas(Springer, 2013) Recioui, AbdelmadjidItem Null steering of Dolph-Chebychev arrays using taguchi method(2013) Recioui, Abdelmadjid; Bentarzi, HamidDolph-Chebychev arrays are known to exhibit the best compromise between sidelobe level and directivity. However, they place a constraint on the null locations. Any attempt to impose nulls or get them deeper will impact the directivity/sidelobe level trade-off. In this work, null placement in Dolph-Chebychev arrays through element position perturbation is carried out based on Taguchi method while preserving the array aperture. Several examples are considered for single, double, multiple and broad null placement to demonstrate the ability of the Taguchi method to explore the search space and reach the global optimumItem Design of an IIR digital filter for phasor measurement improvement based on a hybrid optimization algorithm(IEEE, 2013) Recioui, Abdelmadjid; Ouadi, A.; Bentarzi, HamidItem Pattern synthesis of nonuniformly spaced arrays based on unit circle representation and Taguchi method(Springer, 2014) Recioui, AbdelmadjidItem Optimization of antenna arrays using different strategies based on taguchi method(Springer, 2014) Recioui, AbdelmadjidItem Pattern nulling of linear array antennas with mutual coupling effects using taguchi method(IEEE, 2012) Recioui, Abdelmadjid; Bentarzi, HamidThe purpose of the present work is to employ the Taguchi's optimization technique, which is a relatively new optimization technique, for null steering in the antenna radiation pattern by controlling only the element positions of a nonuniform linear array for a specified beamwidth and minimum achievable sidelobe level. As a practical part, an array of parallel dipoles is designed to account for the mutual coupling effects on the performance of the array in terms of directivity, sidelobe level and null placement. Illustrative examples are considered to impose single or multiple nulls in the antenna pattern at specific interference directions with the maximum side lobe level reduction of array antenna design