presented an optimal APF filter design method to compensate current harmonics and the reactive power of a nonlinear load simultaneously

This paper presents an innovative active power filter design method to compensate simultaneously the current harmonics andreactive power of a nonlinear load. The power filter integrates a passive power filter, which is an RL low-pass filter placed in series with the load,and an active power filter, which comprises of an RL in series with an IGBT based voltage source converter. The filter is supposed to inject acurrent into the connection node of the load and grid to eliminate current harmonics and its reactive part. The voltage source converter is placedin a hysteresis feedback control loop to generate a harmonic current. The bandwidth and output amplitude of the hysteresis controller are optimizedwith the inductance of RL filters. Three objective functions are considered in the optimization problem, which include minimizing current totalharmonic distortion, maximizing power factor, and minimizing the IGBT bridge current. For solving the optimization problem, four well-knownmulti-objective evolutionary algorithms are applied, namely, non-dominated sorting genetic algorithm-II (NSGA-II), Strength Pareto EvolutionaryAlgorithm ۲ (SPEA۲), Suppaptinarm Multiobjective Simulated Annealing Algorithm (SMOSA) and Multi-Objective Particle Swarm Optimization(MOPSO). The test results showed that the MOPSO technique exhibited the better performance against NSGA-II, SPEA۲ and SMOSA relativeto the objectives.

کلیدواژه ها:

power filter ، multi-objective optimization ، NSGA-II ، SPEA۲ ، MOPSO ، SMOSA ، harmonic filtering ، power factor correction