Study of regeneration power control inverter for DC traction with active power filter ability

This paper proposes a regeneration inverter system, which can regenerate the excessive power from the DC bus line to the AC source for traction systems. The proposed regeneration inverter system for DC traction can reduce harmonics which is a characteristic of the AC current source. The regeneration inverter operates in two modes. First, in the regeneration inverter mode, it can recycle regeneration energy generated by decelerating traction. Second, in active power filter mode, it can compensate for harmonic distortion caused by the rectifier substations. In the paper, a regeneration inverter was used a PWM DC/AC converter algorithm and an active power filter used p-q theory. The parameters of simulation were composed of a prototype model [3.7 kW], Simulation results show that two algorithms can be used in real model [100 kW]. Finally, it is shown that the inverter can successfully operate in regeneration mode.