High Voltage Gain Multi-port Bidirectional DC-DC Converter with an Effective Multi-loop Control Strategy for PV/Battery Integrated Systems

Authors : Murat Mustafa SAVRUN, Alihan ATAY

Pages : 99-104

Doi:10.26701/ems.934248

View : 15 | Download : 8

Publication Date : 2021-09-20

Article Type : Research Paper

Abstract :This study proposes a novel isolated bidirectional multiport converter insert ignore into journalissuearticles values(MPC); based on a switched-capacitor converter and a half-bridge converter with an effective control scheme for photovoltaic insert ignore into journalissuearticles values(PV); powered and battery buffered systems. The proposed power electronics converter interface integrates the converters to which the ports are connected with a battery coupled common dc busbar and high frequency transformer insert ignore into journalissuearticles values(HFT);. Thus, the three-port converter is formed without any need for an additional converter to regulate battery power flow. In addition, to transfer power from a low voltage PV energy unit to the battery and load, a single switch DC-DC converter with high voltage gain is proposed. The power flow between the ports is controlled by an effective multi-loop control scheme that is able to perform a smooth transition between the loops. In order to validate the viability and effectiveness of the proposed MPC, a 3 kW proof-of-concept model has been developed with a 3 kW PV and 220 V 12 Ah battery. The performance of the proposed converter has been analyzed for different case studies, including dynamic operating and loading conditions.
Keywords : Multiport dc dc converter, switched capacitor, photovoltaic, battery, multi loop controller