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- Title
Simple four-quadrant grid-tie control scheme with unity power factor rectifier mode for single-phase DC/AC converters.
- Authors
Pei-Chin Chi; Purnama, Irwan; Yao-Ching Hsieh; Jing-Yuan Lin; Huang-Jen Chiu
- Abstract
This study proposes a voltage-oriented control scheme for four-quadrant grid-tie of a single-phase bidirectional direct current/alternating current (AC) voltage-sourced converter (VSC) to operate smartly at modes of unity power factor (PF) rectifier (UPFR), inverter or static var compensator. Given the possible harmonic-distorted AC grid voltage, the proposed scheme follows or filters the grid voltage to generate the appropriate current command template for minimising the harmonic current while synchronising with the grid. The following template is for the UPFR mode, whereas the filtered template is for the other modes. The scheme proposes a unique band-pass filter (BPF) to proceed with direct component generation for the filtered template. The proposed scheme further unifies the grid-tie inductor current-to-voltage conversion for the following emplate and the quadrature component generation for the filtered template into a differentiator. The control laws under the filtered and following templates are derived. The BPF and differentiator designs are introduced. Simulations and experiments are conducted with a one-cycle control full-bridge VSC to verify the proposed grid-tie control scheme and evaluate its performance.
- Subjects
ELECTRIC power factor equipment; VOLTAGE-frequency converters; VOLTAGE control; ELECTRIC current rectifiers; DIRECT currents; ALTERNATING currents
- Publication
IET Renewable Power Generation (Wiley-Blackwell), 2017, Vol 11, Issue 11, p1483
- ISSN
1752-1416
- Publication type
Article
- DOI
10.1049/iet-rpg.2016.0561