Single phase parallel active filter for aircraft applications

摘要

Aircraft electrical power generation are moving towards variable frequency systems rather than constant frequency systems. A parallel active filter arrangement provides reactive power compensation and reduced harmonics in the input current of a nonlinear load in the electrical system. The sum of the harmonic and reactive currents is used as a reference signal for a proportional-integral controller which controls the PWM of the voltage source inverter. A simulation shows satisfactory results in the range of 350 800 Hz.