One of the most efficient lighting technology is based on light-emitting diodes (LEDs). Common LED drivers with AC-input (50-60Hz) usually require a bulk electrolytic capacitor to decrease low-frequency ripple in the output. However, the critical element that limits the lifespan of the LED driver is the electrolytic capacitor. An isolated off-line LED driver is proposed in this paper, in which ...

The objective of this paper is to construct a wind generator system (WGS) loss model that addresses the loss of the wind turbine and the generator. It aims to optimize the maximum effective output power and turbine speed. Given that the wind generator system has inertia and is nonlinear, the dynamic model of the wind generator system takes the advantage of the duty of the Buck converter and emp...

This paper presents a proposal for potential bioelectrochemical power to gas stations. It consists of two-level voltage source converter interfacing the electrical grid on AC side and an electromethanogenesis based system (EMG-BES) working as stacked module DC side. The proposed converts CO2 energy into methane, using wastewater additional chemical input. storage can contribute dampening variab...

this paper introduces an indirect adaptive fuzzy sliding mode controller as a power system stabilizer for damping local and inter-area modes of oscillations of multi-machine power systems. this controller is designed based on the combination of sliding mode controller and the fuzzy logic systems. the fuzzy systems are used to approximate the unknown functions of power system model. generator sp...

This paper proposes a new technique of using Axial Flux Induction Machines (AFIMs) for wind energy conversion systems. The Power Generation by wind is found to be enhanced by using a Twin Rotor Axial Flux Induction Machine (TRAFIM). By using Axial Flux Induction Machines, the gear box ratio can be reduced. The Single air gap and TRAFIM have been mathematically modeled in the environment of MATL...

We proposed a speaking aid system using statistical voice conversion for laryngectomees, whose vocal folds have been removed. This paper investigates the influence of various small sound sources on the voice conversion accuracy. Spectral envelopes and power of sound sources are controlled independently. In total 8 different kinds of sound source signals, e.g. pulse train, sierra wave and so on,...