Power converter topologies for a high performance transformer rectifier unit in aircraft applications

This paper presents some power converter architectures and circuit topologies, which can be used to achieve the requirements of the high performance transformer rectifier unit in aircraft applications, mainly as: high power factor with low THD, high efficiency and high power density. The voltage and the power levels demanded for this application are: three-phase line-to-neutral input voltage of 115 or 115V_AC rms (360-800Hz), output voltage of 28V_DC or 270V_DC (new grid value) and the output power up to tens of kilowatts.