Reliability Analysis and Cost Optimization of Parallel-Inverter System

As the penetration of renewable energy resources proliferate, inverters have been employed as interface in distributed power systems. To achieve expanded power level and system redundancy, parallel connection of inverters has been widely used. This paper derives mathematical models to quantitatively...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2012-10, Vol.59 (10), p.3881-3889
Main Authors: Xiaoxiao Yu, Khambadkone, A. M.
Format: Article
Language:English
Subjects:
Availability
Cost analysis
Cost optimization
Density
distributed power system
Inverters
Joints
Maintenance engineering
Mathematical models
Optimization
parallel inverters
Power conversion
power density
Power distribution
Power system reliability
reliability modeling
Sensitivity analysis
Strategy
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Summary:As the penetration of renewable energy resources proliferate, inverters have been employed as interface in distributed power systems. To achieve expanded power level and system redundancy, parallel connection of inverters has been widely used. This paper derives mathematical models to quantitatively evaluate the reliability of parallel inverters under different topologies and control strategies. A framework to determine the number of inverters in parallel in terms of reliability and cost optimization is proposed. Sensitivity analysis is carried out to identify the impact of parameter variation on system reliability and total cost. At last, power densities of different structures are analyzed for a fair comparison.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2011.2175670