Abstract
This paper proposes a synchronization scheme for grid-connected Voltage Source Inverters (VSI) without physical interface inductors, voltage sensing or conventional PLL algorithms. Especially, issues with converters connected trough long cables are addressed. These cables present non-negligible LC characteristics that can lead to resonance peaks degrading current or voltage waveforms. A virtual impedance is used as grid coupling element, providing a virtualized synchronization point within software using only already available current-sensor information. Also, virtual resistance is used to actively dampen resonance peaks caused by cable characteristics. Theoretical analysis and simulation results are presented to verify the proposed strategy.
| Original language | American English |
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| State | Published - Oct 30 2020 |
| Event | IEEE Xplore - Duration: Oct 30 2020 → … |
Conference
| Conference | IEEE Xplore |
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| Period | 10/30/20 → … |
Keywords
- Frequency Analysis
- Grid Synchronization
- Resonant Damping
- Voltage Source Inverter
Disciplines
- Electrical and Computer Engineering