Abstract
In this article, we propose a unified voltage control for grid-forming inverters, which enables to flexibly synthesize six commonly used voltage control methods through a universal and simple structure. The unified control scheme is composed by three loops, i.e., the voltage magnitude control, the virtual impedance control, and the voltage-reference-feedforward control. By flexibly combining the three loops and applying different forms of virtual impedance, the six voltage control methods can be readily realized. The experimental tests confirm the effectiveness of the unified voltage control structure.
Original language | English |
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Journal | IEEE Transactions on Industrial Electronics |
Volume | 71 |
Issue number | 3 |
Pages (from-to) | 2578-2589 |
Number of pages | 12 |
ISSN | 0278-0046 |
DOIs | |
Publication status | Published - 1 Mar 2024 |
Keywords
- Current control
- Grid-forming inverters
- Impedance
- Inverters
- Power system stability
- Pulse width modulation
- Synchronization
- Voltage control
- single-loop voltage-magnitude control
- unified voltage control
- vector-voltage control