Método Hill Climbing Search e controle de ciclo único para rastreamento da máxima potência em sistemas de energia eólica

Abstract

The increasing technological advancement and the development of electrical energy processing techniques have made it possible to reduce the costs of many equipment and systems, making them accessible to a larger number of consumers. With incentives in renewable energy investments, the energy matrix of the world and Brazil is increasingly diversified. Wind energy is the energy coming from the force of the winds, being used for electricity generation. Tests of the different types of technology (equipment, generators, converters, and electronic devices) have as main objective to extract the maximum power. Thus, the objective of the work is the formulation and application of the Hill Climbing Search - One Cycle Control (HCS-OCC) control technique to calculate the maximum power point (MPP) in a permanent magnet synchronous generator (PMSG), used in wind energy conversion system (WECS). In the proposed method, mechanical sensors are not used. The technique under study not only measures the mechanical power without using speed sensors, but also measures the maximum electrical power (151 to 226 kW level), maintaining the unitary power factor, seen from the generator during a rotor speed range between 2.66 and 6.82 rad/s. The proposed method has advantages of simplicity of control and the elimination of speed sensors. The verification of the model is done through simulations via PSCAD software.