Abstract
The utility-scale wind and solar electricity production is typically connected to the power grid through multiple parallel three-phase inverters. One of the main issues in such grid-connected systems is the harmonic resonance caused by interactions between the grid and inverters. A common method for the analysis of these systems has been the impedance-based stability criterion. However, in systems that have multiple parallel inverters, the system complexity and challenges in obtaining the required impedance measurements may deteriorate the accuracy of the impedance-based approach. This paper discusses the aggregation of parallel inverters and the stability analysis of such grid-connected system. A simple method, based on impedance measurements, is shown for defining the allowable number of paralleled inverters so that the system remains stable. Experimental results are shown from power hardware-in-The-loop setup recently developed at DNV GL Flexible Power Grid Lab.
| Original language | English |
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| Title of host publication | Proceedings of the IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) |
| Subtitle of host publication | 17-20 June 2019, Toronto, ON, Canada |
| Publisher | IEEE |
| ISBN (Electronic) | 978-1-7281-1842-0 |
| ISBN (Print) | 978-1-7281-1843-7 |
| DOIs | |
| Publication status | Published - 2019 |
| Publication type | A4 Article in conference proceedings |
| Event | IEEE Workshop on Control and Modeling for Power Electronics - Duration: 1 Jan 1900 → … |
Conference
| Conference | IEEE Workshop on Control and Modeling for Power Electronics |
|---|---|
| Period | 1/01/00 → … |
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