《《Optimization-of-Three-Phase-Grid-Tie-Inverter-Systems-JLPTS》.pdfVIP

1 Optimization of Three-Phase Grid-Tie Inverter Systems Janisa Anandamohan, Lauren Borromeo, Patrik Malich, Tarjani Mehta, Sajan Patel Advisor: Dr. Hana Godrich Collaborators: Arne Ballantine - Bloom Energy, Ranganathan Gurunathan - Bloom Energy 2 Acknowledgments: We would like to thank Dr. Hana Godrich, our advisor, as well as Arne Ballantine and Ranganathan Gurunathan of Bloom Energy for their enthusiastic guidance and support throughout the semester. 3 Table of Contents Abstract 4 Introduction 5 Related Standards and Regulation ………………………………………………………………………. 8 Design Analysis 9 Controller Design Principles 15 State Space Representation 15 DQ Transformations 17 Droop Control 19 Cost Sustainability Analysis 21 Conclusion 23 Appendix 26 References 29 4 Abstract: The aim of this project was to design, simulate, and analyze three-phase grid-tie inverter systems used by Bloom Energy for DC/AC power conversion. Analyzing and simulating the control structure of these inverters helps in learning how to increase efficiency of the DC/AC conversion process to minimize power loss. Specifically, the fundamental objective of the project was to develop a theoretical model of the three-phase grid-tie inverter systems and study how real and reactive power (P and Q) are varying based on the inverter output voltage and frequency. The theoretical model for a single inverter system could then