Electrical and Computer Engineering Commons^™

Deployable Tightly Coupled Dipole Arrays For Small Satellites, Maxence Carvalho

FIU Electronic Theses and Dissertations

This dissertation presents the theory, design, fabrication, and verification of several critical components for a novel class of origami-based and deployable Tightly Coupled Dipole Arrays (TCDAs) suitable for small satellite applications. This work introduces a new approach to enhance the bandwidth of TCDAs by incorporating a semi-resistive Frequency Selective Surface (FSS) network within the substrate. The integration of this FSS network within a dual-polarized TCDA led to an increased impedance bandwidth of 28:1 from 0.20 GHz to 5.6 GHz. Concurrently, losses above 2.5 GHz are reduced to achieve a radiation efficiency of 83% on average. A major component of the …

Condition Monitoring And Fault Tolerant Control Techniques In Electric Vehicle Drives, Hassan H. Eldeeb

FIU Electronic Theses and Dissertations

With the growth in the electric vehicles (EV) use, transportation electrification methodologies ensure improved reliability and security of the EVs and its powertrain as significant factors to consider. Any failure in the EV’s motor drive system or any of its components will directly impact the powertrain's reliability and passenger safety. Due to their robustness and mature design, EV powertrains utilize vector-controlled power inverter-fed induction motor (IM) as their drive system. Therefore, fast, reliable, non-destructive, and non-invasive fault diagnosis (FD) and condition monitoring (CM) techniques are required to detect faults in EV drive systems at their development stage.

Two novel real-time …