Effect of circulating current on input line current of 12‐pulse rectifier with active inter‐phase reactor

Abstract

This study analyses quantitatively the effect of circulating current's amplitude and phase on the input line current of 12-pulse rectifier with active inter-phase reactor. The input line current and its total harmonic distortion (THD) are calculated under different amplitudes and phases of circulating current, and according to the calculation results, the effect of circulating current is analysed. Different from the previous results, it is obtained that the system has better performance when the amplitude of circulating current is slightly less than, but not equal to the half of load current. Both phase lagging and leading increase the THD of input line current. Some simulation and experiment are carried out to validate the theoretical analysis.

Archives of Electrical Engineering

“…In [10], a boost converter is installed at the secondary side of the inter-phase reactor of a 12-pulse rectifier to generate triangular loop currents, which can decrease the THD of the grid-side current of the rectifier to 2.64%, approximately. References [11,12] have improved the DC side by adding a zero-sequence current suppressor to deliver the power supply to the active inverter from the load. In [13], a method using an active inter-phase reactor to suppress the input current harmonics is presented for the large current rectifier based on a star-connected autotransformer.…”

Analysis of Magnetic Field of the New Phase-Shifting Transformer

“…The literature [1] on the status of multi-pulse rectifier technology to do a detailed introduction summarizes the many deficiencies of the existing multi-pulse rectifier technology in practical applications exist, looking for a low-capacity, can AC and DC side of the electrical isolation of the new shift phase transformer topology is the future direction of a multi-pulse rectifier technology. The new phase-shifting transformer shown in Fig.…”