Behavior of active current source rectifier under critical transient conditions in traction

Abstract

In traction applications, critical transient conditions such as trolley bounces, voltage dips or fast power variations can occur. This paper investigates a behavior of single-phase active current source rectifier (ACSR) under above stated critical transient conditions. The analyzed ACSR was controlled by a strategy able to control Power Factor (PF) as well as Distortion Power Factor (DPF) with active harmonic mitigation approach based on resonant controllers. Proper function of proposed control strategy and its behavior under critical transient states have been verified by both simulations and large experimental study made on developed small-scale prototype of ACSR of rated power of 7kVA.

Аnalysis of operating modes of single­phase current­source rectifier with rectangular­stepped pulse­width modulation

“…In [11], the operation of the active current-source rectifier (modulation frequency of 2 kHz) under unfavorable operating conditions of the line (voltage dips, jumps in voltage and load) in the traction mode has been investigated. In this case, the rectifier control strategy, which is based on the phase shift control with the active attenuation of line current harmonics has proved to be effective.…”