Advanced exponential sliding mode control for microgrid at autonomous and grid-connected modes

This paper introduces a novel control scheme for the operation of multilevel inverters forming a microgrid. The core of the suggested control scheme is an advanced (power-rate) exponential sliding mode controller. This developed controller is robust toward any variation of the system’s parameters and loads in addition to its fast and accurate performance. The presented control scheme provides advantageous characteristics to the microgrid operation in an autonomous mode (microgrid mode) and grid-connected mode. In the microgrid mode, the voltages and frequency are stable at any variable balanced and unbalanced load. In the grid-connected mode, an effective procedure for connecting the microgrid to the main grid is proposed to guarantee a seamless and fast transition to the grid-connected mode. The performance of the presented control scheme along with its proposed controller is validated by comparing its results to another linear and non-linear controllers for the same microgrid loading conditions.

[1]  Frede Blaabjerg,et al.  Proportional-resonant controllers and filters for grid-connected voltage-source converters , 2006 .

[2]  Malabika Basu,et al.  Parallel operation of inverters and active power filters in distributed generation system—A review , 2011 .

[3]  Hemanshu R. Pota,et al.  Overview of AC Microgrid Controls with Inverter-Interfaced Generations , 2017 .

[4]  Susy Thomas,et al.  Improved sliding mode controller performance through power rate exponential reaching law , 2017, 2017 Second International Conference on Electrical, Computer and Communication Technologies (ICECCT).

[5]  Alireza Bakhshai,et al.  A review of AC microgrid control methods , 2017, 2017 IEEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG).

[6]  Josep M. Guerrero,et al.  A Survey on Control of Electric Power Distributed Generation Systems for Microgrid Applications , 2015 .

[7]  Josep M. Guerrero,et al.  Review of Power Sharing Control Strategies for Islanding Operation of AC Microgrids , 2016, IEEE Transactions on Smart Grid.

[8]  Charles J. Fallaha,et al.  Sliding-Mode Robot Control With Exponential Reaching Law , 2011, IEEE Transactions on Industrial Electronics.

[9]  Maarouf Saad,et al.  Sliding Mode Control of PMSG Wind Turbine Based on Enhanced Exponential Reaching Law , 2016, IEEE Transactions on Industrial Electronics.

[10]  Ashraf Khalil,et al.  Control strategies in AC microgrid: A brief review , 2018, 2018 9th International Renewable Energy Congress (IREC).

[11]  A. Elnady,et al.  SIMULATION AND EXPERIMENTAL COMPARISON BETWEEN MULTILEVEL AND CONVENTIONAL INVERTERS , 2017 .

[12]  Ali Mohammad Ranjbar,et al.  Control of microgrids: Aspects and prospects , 2011, 2011 International Conference on Networking, Sensing and Control.

[13]  Lieven Vandevelde,et al.  Review of primary control strategies for islanded microgrids with power-electronic interfaces , 2013 .

[14]  Tsai-Fu Wu,et al.  Current Weighting Distribution Control Strategy for Multi-Inverter Systems to Achieve Current Sharing , 2007, IEEE Transactions on Power Electronics.

[15]  Usman Bashir Tayab,et al.  A review of droop control techniques for microgrid , 2017 .

[16]  Rahmat-Allah Hooshmand,et al.  An overview of control approaches of inverter-based microgrids in islanding mode of operation , 2017 .

[17]  M. Liserre,et al.  Low-cost digital implementation of proportional-resonant current controllers for PV inverter applications using delta operator , 2005, 31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005..

[18]  Ali Mehrizi-Sani,et al.  Distributed Control Techniques in Microgrids , 2014, IEEE Transactions on Smart Grid.

[19]  Gevork B. Gharehpetian,et al.  Dynamic performance enhancement of microgrids by advanced sliding mode controller , 2011 .

[20]  E.A.A. Coelho,et al.  Sliding mode controller for parallel connected inverters , 1998, 6th IEEE Power Electronics Congress. Technical Proceedings. CIEP 98 (Cat. No.98TH8375).

[21]  F. Blaabjerg,et al.  Control of Power Converters in AC Microgrids , 2012, IEEE Transactions on Power Electronics.

[22]  K. Smedley,et al.  Parallel operation of one-cycle controlled grid connected three-phase inverters , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[23]  Jeyraj Selvaraj,et al.  Control Methods and Objectives for Electronically Coupled Distributed Energy Resources in Microgrids: A Review , 2016, IEEE Systems Journal.

[24]  Tsai-Fu Wu,et al.  3C strategy for inverters in parallel operation achieving an equal current distribution , 2000, IEEE Trans. Ind. Electron..

[25]  L. Marroyo,et al.  Modeling and Control of a Master–Slave PV Inverter With N-Paralleled Inverters and Three-Phase Three-Limb Inductors , 2013, IEEE Transactions on Power Electronics.

[26]  Noor Izzri Abdul Wahab,et al.  A review on microgrid control techniques , 2014, 2014 IEEE Innovative Smart Grid Technologies - Asia (ISGT ASIA).

[27]  M. Abedi,et al.  Decentralized Cooperative Control Strategy of Microsources for Stabilizing Autonomous VSC-Based Microgrids , 2012, IEEE Transactions on Power Systems.

[28]  Oriol Gomis-Bellmunt,et al.  Trends in Microgrid Control , 2014, IEEE Transactions on Smart Grid.

[29]  Lipei Huang,et al.  Distributed Parallel Operation of Modified Deadbeat Controlled UPS Inverters , 2007, 2007 IEEE Power Electronics Specialists Conference.

[30]  S. N. Bhaskara,et al.  Microgrids — A review of modeling, control, protection, simulation and future potential , 2012, 2012 IEEE Power and Energy Society General Meeting.

[31]  Lipei Huang,et al.  Progressively converging deadbeat control for UPS inverter , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..

[32]  A. Mohd,et al.  Review of control techniques for inverters parallel operation , 2010 .