dynamic voltage restorer maximum power point динамічний відновник напруги 20D10 20D2 20D35 H∞ controller H∞ контролер Sylow \(p\)-subgroup \(p\)-nilpotent group attitude regulation conventional particle swarm optimization demand side management dynamic economic emission dispatch economic emission energy consumption pattern finite group flower pollination algorithm genetic algorithm home energy management system hybrid optimization technique maximum power point error meta-heuristic optimization multi-objective problem nearly \(S\Phi\)-normal subgroup nonlinear system opposition based particle swarm optimization algorithm power quality improvement power quality issues ramp rate