Emulation of Wind Turbines

This chapter presents the modeling, simulation, and emulation for small wind turbine (WT) systems. The main objective of the emulation system is to reproduce the WT torque dynamic behavior in the generator shaft, which must be similar to one of real horizontal WTs used for distributed generation. The aerodynamic, mechanical, and electrical models for horizontal axis wind turbines (HAWTs) are presented in detail. The models are used for simulation analysis and emulation synthesis. The emulator consists a (i) computational platform, which is based on LabVIEW® environment and runs the model of the WT and (ii) an induction motor (IM) with AC power drive with torque control. The IM shaft is directly coupled with the real small wind generator and corresponding load. Experimental waveforms are also presented to demonstrate the functionality of the system

Exploração de Paralelismo em Dispositivos Lógicos Programáveis Visando Implementação de Controladores Digitais para Filtros Ativos de Potência

The IEEE establishes a series of specifications that check the predisposition of power quality, including harmonic distortion. The concentration of non-linear loads can end deforming the waveform of the alternating current distribution. This deformation can affect the devices connected to it, causing, for example, poor operation of electronic equipment. What is proposed in this work involves the development of control structures with high processing power, using approach of performing calculations in parallel on programmable logic devices. We intend to employ a generic approach able to have their operation applied and adapted to any FPG

Digital control system using a thermoelectric cell for temperature electronic devices testing

This paper presents a temperature digital control system for performance evaluation of electronic devices under different operating temperatures. The system is based on a thermoelectric module of Peltier effect, which is used for heating or cooling the device under test (DUT). A digital PI controller is designed through simulations with an electric model of the structure, developed in Simulink®. Based on the parameters and results from simulations, the controller is implemented in Labview® and experimental results are obtained using a servo amplifier like actuator.203

Dynamic response analysis of a digital temperature controller with fiber optic sensor

The aim of this study is to analyze the dynamic response of digital temperature controller using fiber optic sensors based Bragg grating. The controller designed using a fiber Bragg grating in feedback control loop, instead of the usual thermistor. With this configuration the control system got reduced response time without oscillations in the transitional regime and zero error in steady state.FINEP, CAPES, SETI, CNPq e Fundação Araucária500