AEG HPI combines management of THD and power factor, low cost of ownership and power protection in a highly reliable solution. It uses a completely new IGBT input rectifier design, encompassing an advanced PFC (Power Factor Control) which is capable of keeping input current THDi (Total Harmonic Distortion) at a level of less than 3 % and input power factor within 1 % of unity, even when only small loads are applied.