Control Of Bidirectional DC-DC Converter For Battery Storage System In Grid-Connected Quasi-Z-Source PV Inverter

• Main Authors: Zulhani, Rasin, M.F., Rahman
• Format: Article
• Language: English
• Published: Institute Of Electrical And Electronics Engineers Inc. (IEEE) 2016
• Subjects: T Technology (General)
• Online Access: http://eprints.utem.edu.my/id/eprint/17112/1/Control%20Of%20Bidirectional%20DC-DC%20Converter%20For%20Battery%20Storage%20System%20In%20Grid-Connected%20Quasi-Z-Source%20PV%20Inverter.pdf; http://eprints.utem.edu.my/id/eprint/17112/; http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7409540

The use of bidirectional DC-DC converter to interface battery energy storage system with the conventional PV inverter system has been widely addressed. It is however has never been considered to be integrated with the quasi-Z-source inverter (qZSI) topology, which offers several advantages e.g. a single stage buck-boost conversion. This paper specifically discusses on the development of the controller to realize a bidirectional power flow control for the DC-DC converter attached to the grid-connected PV based qZSI using the proposed battery storage method. Based on the circuit analysis, current-to-control relation is established, and results from both simulation and experiment demonstrates the proposed method works according to the requirement.