Voltage Source Converter Control under Distorted Grid Voltage for Hybrid AC-DC Distribution Links

Conference paper (2019)

Authors

Y. Wu DC systems, Energy conversion & Storage -

A. Shekhar DC systems, Energy conversion & Storage -

Thiago B. Soeiro DC systems, Energy conversion & Storage -

P. Bauer DC systems, Energy conversion & Storage -

Research Group

DC systems, Energy conversion & Storage () (TU Delft)

DOI: https://doi.org/10.1109/IECON.2019.8927146

Power electronics Voltage control Power grids Power control Damping Harmonic rejection Voltage control Power filters Pulse width modulation Resonant frequency Harmonic analysis Frequency control Current control Notch filter Electric current control Invertors Notch filters Power convertors Power harmonic filters Voltage source converter control Distorted grid voltage Hybrid AC-DC distribution links AC-side LCL filters Parallel AC-DC distribution links Grid-side current control Front- backend power electronics Grid disturbances Notch filter-based GCC scheme Harmonic rejection control LCL filter resonances Grid-side currents AC voltages Grid voltage harmonics Grid-side current control

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Published Date

2019

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

Back-To-Back (B2B) Voltage Source Converter (VSC) with AC-side LCL filters can be adopted for parallel AC-DC distribution links. In this paper, Grid-side Current Control (GCC) for the inner/fast control loops of the front- and backend power electronics are implemented in order to enhance the system performance against grid disturbances. Herein, a notch filter-based GCC scheme with a harmonic rejection control is proposed which is able to deliver attenuation to the LCL filter resonances while suppressing the harmonics in the grid-side currents originated when the AC voltages are distorted. The results obtained in MATLAB/SIMULINK and an experimental prototype show that the studied GCC method can successfully mitigate the influence of grid voltage harmonics, while providing a stable power control for the hybrid AC-DC distribution links.

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