Abstract
Partial shading significantly deteriorates the performance of a string inverter based grid-tied photovoltaic (PV) systems. Typically, partial shading losses are quantified under mismatch losses. In this work, we identify another related loss which is likely to occur under partial shading conditions due to sub-optimal voltage operation in a typical string inverter. These losses occur due to operational voltage range limitations in an inverter where a large number of series modules are bypassed in high shading scenario. We quantify this loss for a typical roof-top solar PV implementation and results show losses up to 5% in some cases. The evaluations performed in this work gives insights into the performance of these systems under high shade scenarios. While a range of inverters and modules with different parameters and ratings are available in the market, the performance of a PV system can be improved by proper selection of components in deployments where high shade is anticipated.
| Original language | English |
|---|---|
| Title of host publication | 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 1-6 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781479973118 |
| DOIs | |
| State | Published - 3 Dec 2018 |
| Externally published | Yes |
Publication series
| Name | 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
|---|
Bibliographical note
Publisher Copyright:© 2018 IEEE.
Keywords
- Low Voltage Loss (LVL)
- Mismatch Losses
- Partial Shading
- Photovoltaic (PV) System
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Renewable Energy, Sustainability and the Environment
- Control and Optimization
- Computer Networks and Communications
- Hardware and Architecture
- Information Systems and Management
