An AC microgrid architecture and control strategy to achieve stability with any type of load

This papers presents a theoretical stability study of a newly proposed AC microgrid architecture and its control strategy without droop and communication. The paper proves that the proposed AC microgrid is inherently stable in the presence of any type of load. The paper also proposes a control embellishment, which makes any type of load appear to microgrid as a simple constant current load. Theoretical findings of the paper are validated by extensive simulation results.

[1]  Babak Nahid-Mobarakeh,et al.  Stability analysis and active stabilization by a centralized stabilizer of Voltage-Source-Rectifier Loads in AC microgrids , 2013, 2013 IEEE Industry Applications Society Annual Meeting.

[2]  Ali Emadi,et al.  Active Damping in DC/DC Power Electronic Converters: A Novel Method to Overcome the Problems of Constant Power Loads , 2009, IEEE Transactions on Industrial Electronics.

[3]  Daniel J. Pagano,et al.  Nonlinear control of a three-phase power converter with constant power load in a microgrid , 2013, 2013 Brazilian Power Electronics Conference.

[4]  Trapti Jain,et al.  Small signal modelling and stability analysis of an islanded AC microgrid with inverter interfaced DGs , 2014, 2014 International Conference on Smart Electric Grid (ISEG).

[5]  S. C. Smithson,et al.  Constant power loads in More Electric Vehicles - an overview , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[6]  Yasser Abdel-Rady I. Mohamed,et al.  Modeling, Analysis, and Stabilization of Converter-Fed AC Microgrids With High Penetration of Converter-Interfaced Loads , 2012, IEEE Transactions on Smart Grid.

[7]  Jian Sun,et al.  Impedance-Based Stability Criterion for Grid-Connected Inverters , 2011, IEEE Transactions on Power Electronics.

[8]  Farzad Rajaei Salmasi,et al.  Stability Analysis of AC Microgrids With Constant Power Loads Based on Popov's Absolute Stability Criterion , 2015, IEEE Transactions on Circuits and Systems II: Express Briefs.

[9]  Jin Wang,et al.  Stability Analysis and Controller Design of DC Microgrids With Constant Power Loads , 2017, IEEE Transactions on Smart Grid.

[10]  G. Mirzaeva,et al.  Decentralised control of parallel inverters in an AC microgrid using downstream current as an implicit communication method , 2017, 2017 IEEE Southern Power Electronics Conference (SPEC).

[11]  Sandeep Anand,et al.  Eigenvalue sensitivity analysis of microgrid with constant power loads , 2014, 2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[12]  S.D.G. Jayasinghe,et al.  Virtual resistance based active damping solution for constant power instability in AC microgrids , 2011, IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society.

[13]  Ali Emadi,et al.  Modeling of power electronic loads in AC distribution systems using the generalized State-space averaging method , 2004, IEEE Transactions on Industrial Electronics.

[14]  Josep Pou,et al.  Bifurcation Analysis of Parallel-Connected Voltage-Source Inverters With Constant Power Loads , 2018, IEEE Transactions on Smart Grid.