Abstract
Power-synchronization control (PSC) and vector current control (VCC), the latter including cascaded outer loops, are, respectively, considered to be grid-forming and grid-following schemes. They have significant structural differences. Despite that, it is here shown that the two schemes can be unified by making a series of minor modifications to PSC. This results in a universal controller, allowing various combinations of the two schemes to be explored. Fundamentally, it allows PSC to be used as guideline for a robust VCC design, permitting stable and well-performing operation irrespective of the grid strength.
Original language | English |
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Number of pages | 10 |
Journal | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS |
DOIs | |
Publication status | E-pub ahead of print - 19 Nov 2020 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Grid-connected converters
- Grid-following control
- Grid-forming control
- Robustness
- Voltage-source converters