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This paper investigates the performance of an asymmetrical six-phase induction machine fed by a six-phase nine-switch voltage source inverter under both healthy and open motor phase cases. In the literature, the nine-switch inverter topology is proposed as a suitable reduced switch-count converter topology for six-phase drives, where each pair of phases share the same converter leg. First, a brief...
In this paper, a speed-sensorless direct torque control (DTC) drive for induction motor (IM) is developed using three-level inverter and a comprehensive study is presented. Firstly, three-level neutral-point clamped (NPC) inverter is handled and the switching vectors used in DTC based on switching table are defined. Second, the adaptive flux observer is utilized to estimate the rotor speed and load...
In this paper, sliding mode controlled Buck-Boost DC/DC converter powered by Photovoltaic (PV) module for battery charge system is given. The general design of the system is simulated using the Matlab/Simulink software and performed experimentally using Digital Signal Processing (DSP) and necessary circuits. The sliding mode control is realized based on the inductance current and the output voltage...
Multilevel inverters brought a tremendous revolution in high power superior performance industrial drive applications. Minimizing harmonic distortion is a challenging issue for power electronic drive. This problem can be solved by developing suitable modulation technique. There are number of modulation techniques established in the last decade. Among them, the space vector pulse width modulation (SVPWM)...
This paper proposes a design close loop for series resonant converter based on generalized state space averaging modeling for the resonant converter. In addition, this study covers both the steady state analysis and small signal modeling for the series resonant converter, working under zero voltage switching conditions. The proposed closed loop system, which uses PID controller and the Observable...
In this study small signal analyses of a buck boost converter for a renewable energy applications is performed and hardware implementation is realized. State equations are solved for different study conditions and transfer function of uncontrolled system is obtained for stability analyses. Experimental hardware of buck boost converter realized with a MOSFET driver circuit which is designed for high...
This paper will analyze and compare the performance of a 12/8 switched reluctance (SR) machine with a higher number of rotor poles machine in terms of the power being generated. It will also highlight a new approach to maximize the power generated by the SR machine operating as a generator. There are many variables which affect the power generated by the SR machine such as: firing angles, reference...
Wireless networks are progressively becoming more affordable, due to its vulnerability to Jamming (DOS attack) which disrupt the operation of broadcasting system, this paper aims to implement NS-2 simulator by adding new layer named "Multi-Radio Layer" to support multi-radio multichannel in order to increase network capacity and implement jamming defender model to improve the resiliency...
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