Energy management of AC-DC microgrid under grid-connected and islanded modes

In this paper, a unified adaptive energy management scheme (EMS) is proposed for renewable-interfaced hybrid energy storage system (HESS) under grid connected/islanded conditions. A second harmonic based phased locked loop is employed for effective synchronization/resynchronization of the microgrid system under contingency conditions. The operation and management of the microgrid system under both these modes are accomplished by an efficient adaptive power management algorithm. A quantitative analysis on the HESS performance is provided in order to investigate the effectiveness of the proposed approach. Load curtailment and off-maximum power point tracking features are also accommodated in the proposed scheme. This approach address seamless transfer between the various sub-modes of the system along with additional services such as power quality enhancement and effective power dispatch between various sources. The effectiveness of the proposed scheme is verified by both simulation and experimental investigations.

[1]  Jin Jiang,et al.  A Power Management Strategy for PV/Battery Hybrid Systems in Islanded Microgrids , 2014, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[2]  N. Rizoug,et al.  Study of the Ageing Process of a Supercapacitor Module Using Direct Method of Characterization , 2012, IEEE Transactions on Energy Conversion.

[3]  Bruno Francois,et al.  Energy Management and Operational Planning of a Microgrid With a PV-Based Active Generator for Smart Grid Applications , 2011, IEEE Transactions on Industrial Electronics.

[4]  Narsa Reddy Tummuru,et al.  Dynamic Energy Management of Hybrid Energy Storage System With High-Gain PV Converter , 2015, IEEE Transactions on Energy Conversion.

[5]  F. V. P. Robinson,et al.  Analysis of Battery Lifetime Extension in a Small-Scale Wind-Energy System Using Supercapacitors , 2013, IEEE Transactions on Energy Conversion.

[6]  A Hajizadeh,et al.  Voltage Control and Active Power Management of Hybrid Fuel-Cell/Energy-Storage Power Conversion System Under Unbalanced Voltage Sag Conditions , 2010, IEEE Transactions on Energy Conversion.

[7]  M.S. Alam,et al.  Dynamic modeling, design, and simulation of a combined PEM fuel cell and ultracapacitor system for stand-alone residential applications , 2006, IEEE Transactions on Energy Conversion.

[8]  Bruno Francois,et al.  Power Control Design of a Battery Charger in a Hybrid Active PV Generator for Load-Following Applications , 2011, IEEE Transactions on Industrial Electronics.

[9]  Narsa Reddy Tummuru,et al.  Dynamic Energy Management of Renewable Grid Integrated Hybrid Energy Storage System , 2015, IEEE Transactions on Industrial Electronics.