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This paper presents a bridgeless SEPIC topology with Power Factor Correction (PFC) to charge electric vehicle battery. The converter offers a few advantages such as reduce total component count and reduction of conduction loss during the conversion AC to DC, hence higher overall system efficiency. The PFC converter operated under continuous conduction mode (CCM) with average current mode control strategy...
This paper discusses a simple vector control technique for vector control of faulty 3-phase Induction Motor (3-phase IM under open-phase fault) based on Rotor Flux-Oriented Control (RFOC). It is shown in the adapted system for vector control of the faulty IM, it is essential for the speed PI controller coefficients to modify. For this reason, Genetic Algorithm (GA) is employed for tuning of speed...
This research discusses d-q model and Rotor Flux-Oriented Control (RFOC) technique for faulty three-phase Induction Motor (three-phase IM when one of the stator phases is opened). In the controlling technique, two transformation matrixes are applied to the equations of faulty three-phase IM. As a result, the equations of faulty three-phase IM become similar to the balanced IM. Therefore, by employing...
This paper presents a new technique for Rotor Field-Oriented Control (RFOC) of a single-phase induction motor (IM) with two asymmetrical main and auxiliary windings. Using this technique, transformation matrices are introduced and applied to the equations of single-phase IM. It is shown that by applying these transformation matrices to the equations of singlephase IM, asymmetrical equations of RFOC...
This paper proposes a new computer based method for transient and steady state solution of n-dimensional coupled transmission line networks or communication circuits with distributed parameters. In this method, a novel approach has been developed for formulating and computing the n-dimensional generalized ABCD parameter matrices, as well as for developing and solving the equivalent n-dimensional coupled...
This paper presents a stochastic subspace identification algorithm dedicated to subspace-based closed-loop system identification. The preliminary algorithm is based on the ordinary subspace technique followed by a modification in which a new proposed method based on orthogonal decomposition method is used to reconstruct the past input and past output data of the instrumental variables. The noise model...
This paper presents some of the methods under subspace-based family to perform closed-loop system identification. Three methods have been observed, those are the ORT method, MOESP method and CCA method. The performance of these models is evaluated by identifying the same experimental systems. Three performance evaluation tests according to mean square errors, variance accounted for and best fit are...
Starting a free-piston linear engine-generator (LG) involves reciprocating a freely moving piston-magnet-translator assembly between two oppositely placed engine cylinders for combustion to occur. The machine is operated as a brushless linear motor to produce the required motion. However, due to the very large peak compression force during starting, limited current rating of stator coils and insufficient...
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