Active filters 1 Controller development 1 Controllers 1 Current control algorithm Current controller 1 Electric current control 1 Fuzzy filters 1 Fuzzy inference 1 Fuzzy rules 1 Harmonic and reactive power compensation 1 Proportional control 1 Reactive power 1 Reactive power compensation 1 Shunt active power filter 1 Shunt active power filter (SAPF) 1 Shunt active power filters 1 Single input single output 1 Steady state controls 1