PQFA Instructions ManualAsea Brown Boveri Jumet S.A. 134. Components description and identification4.1. Components descriptionAs already explained, the active filter is basically composed of two parts: thecurrent generator and the control system.4.1.1. PQF current generator.The power circuit of the ABB active filter PQF is represented hereafter.OutputFilterPWM inverterMain BreakerPowerLines+-PWM ReactorsPreloadThe main components are:- PWM inverter- PWM reactors- Output filer- Preloading circuitThe current generator is physically organised in power modules, eachincluding a PWM inverter, three PWM reactors and the output filter.Each PQFA cubicle may contain one or two power modules. There is onebreaker and one preloading circuit per cubicle.Non-linear load(s)(three-phase orsingle-phase)PQF DigitalControlCompensationcurrentCurrentmeasurementPQF currentgenerator
