A single phase inverter-zigzag transformer hybrid filter to suppress neutral harmonic currents in three-phase four-wire systems

To eliminate the negative effects caused by three-phase unbalanced distribution, a novel soft-switching system based on single-phase inverter is proposed. The system achieves three-phase equilibrium distribution by adjusting the power supply of the electric equipments. This paper presents a track strategy named regulating frequency to promise no impulse current, which means regulating the output frequency of the inverter to make the output voltage of the inverter synchronize with the grid voltage. Firstly, make the output voltage of the inverter synchronize with the voltage of original access phase, then switch the electric equipment to the inverter. Secondly, make the output voltage of the inverter synchronize with the voltage of alternative access phase, then switch the electric equipment to the alternative access phase to accomplish the soft-switching. MATLAB software and experiment are used to carry out verification for this system. The result shows that the impulse current is practically zero when the electric equipments are switching. The system achieves soft-switching.

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Single-phase inverter-based neutral-current suppressor for attenuating neutral current of three-phase four-wire distribution power system

IET Generation Transmission & Distribution ◽

10.1049/iet-gtd.2011.0125 ◽

2012 ◽

Vol 6 (6) ◽

pp. 577 ◽

Cited By ~ 14

Author(s):

J.-C. Wu ◽

H.-L. Jou ◽

K.-D. Wu ◽

S.-T. Xiao

Keyword(s):

Power System ◽

Single Phase ◽

Neutral Current ◽

Phase Inverter ◽

Three Phase ◽

Single Phase Inverter

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Co-simulation and hardware implementation of multi-port rectifier for power system and renewable energy applications

Wind Engineering ◽

10.1177/0309524x18780389 ◽

2018 ◽

Vol 43 (2) ◽

pp. 162-174

Author(s):

Karthikrajan Senthilnathan ◽

K Iyswarya Annapoorani

Keyword(s):

Single Phase ◽

Hardware Implementation ◽

Phase Inverter ◽

Graphical Programming ◽

Energy Applications ◽

Three Phase ◽

Input Source ◽

Single Phase Inverter ◽

Simulation Engines ◽

Three Phase Inverter

In this article, a novel rectifier is designed for two three-phase sources with single-phase inverter and three-phase inverter. The proposed configuration results in back-to-back converter with the dual input source. The main objective is to reduce the semiconductor components in the rectifier. The rectifier design consists of six diodes and three split capacitors. A separate direct current link capacitor is eliminated due to the presence of split capacitors. The simulation model of rectifier and inverter is designed in Multisim, a PSpice-based power electronics simulator, and interfaced with LabVIEW, a graphical programming language for co-simulation. The co-simulation enables the user to utilize two simulation engines for better analysis. The hardware prototype is fabricated and tested for rectifier and inverter. The co-simulation and hardware results proved that proposed design is capable to use in back-to-back converter applications.

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