Compensação ativa de qualidade de energia em MEAS com filtro de kalman e controlador adaptativo por modelo de referência

Abstract

Aircrafts have undergone change with the advancement of technology. Applications that were previously performed trough mechanical, hydraulic and pneumatic systems have been supplied by the electrical system, leading to the more electric aircraft (MEA) concept. This tecnology implies the increase of electric load, more electric power consumption, more generation and energy quality demand, and the increase of nonlinear loads. Nonlinear loads generate distorted currents, which in turn compromise the voltage waveforms. This may cause interferences on the electric power system, compromising the proper operation of the airplane. In this sense, the system operates above the permitted limits, and may injure people or damage equipment. This paper contributes to the search for solutions to the harm related to the harmonic currents and reactive power that arise due nonlinear loads by using a parallel active power filter. For the generation of reference currents, a Kalman filter was used, which presents good performance to operate in the complex power system with frequency variation. For tracking references, it was used an adaptive controller by reference model.