A Droop Based-Control Strategy of Stand-Alone Single-Phase Converters for Microgrid Applications

A control technique based on dynamic model of stand-alone single-phase voltage-source converter (SPVSC) in dq reference frame and droop curve equation is proposed in this paper to stable the voltage of point of common coupling (PCC) when renewable energy resources (RERs) are linked in a microgrid structure. The proposed control strategy is designed with respect to the aimed state variables of PCC frequency and voltage magnitude as well as the droop curve specifications. Moreover, an evaluation on PCC voltage frequency and voltage magnitude-based curve is presented for further analyzing the proposed controller performance. Simulation results in MATLAB/SIMULINK software prove the abilities of proposed controller in reaching stable operation of PCC voltage in microgrid application under load alteration.

[1]  Hani Vahedi,et al.  Hybrid SHM–SHE Modulation Technique for a Four-Leg NPC Inverter With DC Capacitor Self-Voltage Balancing , 2015, IEEE Transactions on Industrial Electronics.

[2]  Ionel Vechiu,et al.  Synchronous active proportional resonant-based control technique for high penetration of distributed generation units into power grids , 2017, 2017 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe).

[3]  Hani Vahedi,et al.  Selective harmonic elimination modulation technique applied on four-leg NPC , 2014, 2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE).

[4]  Girish G. Talapur,et al.  Soft-Switched High Voltage Gain Boost-Integrated Flyback Converter Interfaced Single-Phase Grid-Tied Inverter for SPV Integration , 2018, IEEE Transactions on Industry Applications.

[5]  Josep M. Guerrero,et al.  Optimal Performance Design Guideline of Hybrid Reference Frame Based Dual-Loop Control Strategy for Stand-Alone Single-Phase Inverters , 2018, IEEE Transactions on Energy Conversion.

[6]  Hani Vahedi,et al.  Modified selective harmonic elimination employed in four-leg NPC inverters , 2014, IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society.

[7]  J. P. S. Catalao,et al.  A control technique for operation of single-phase converters in stand-alone operating mode , 2016, 2016 IEEE Electrical Power and Energy Conference (EPEC).

[8]  Hani Vahedi,et al.  Single-DC-source 7-level CHB inverter with multicarrier level-shifted PWM , 2015, IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society.

[9]  Hani Vahedi,et al.  Hybrid SHM-SHE Pulse-Amplitude Modulation for High-Power Four-Leg Inverter , 2016, IEEE Transactions on Industrial Electronics.

[10]  Hani Vahedi,et al.  SHM-PWM applied on single DC source CHB with self-regulation of capacitors voltages , 2018, 2018 IEEE International Conference on Industrial Technology (ICIT).

[11]  Tommaso Caldognetto,et al.  Centralized Control of Distributed Single-Phase Inverters Arbitrarily Connected to Three-Phase Four-Wire Microgrids , 2017, IEEE Transactions on Smart Grid.

[12]  Minh-Khai Nguyen,et al.  Cascaded five-level quasi-switched-boost inverter for single-phase grid-connected system , 2017 .

[13]  Ionel Vechiu,et al.  Double synchronous controller for integration of large-scale renewable energy sources into a low-inertia power grid , 2017, 2017 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe).

[14]  Hani Vahedi,et al.  Optimised harmonic elimination modulation extended to four-leg neutral-point-clamped inverter , 2016 .

[15]  Yuanbin He,et al.  A fast dynamic unipolar switching control scheme for single phase inverters in DC microgrids , 2016, 2016 IEEE Energy Conversion Congress and Exposition (ECCE).

[16]  N. Altin,et al.  Comparative study on Lyapunov-function-based control schemes for single-phase grid-connected voltage-source inverter with LCL filter , 2017 .

[17]  Edris Pouresmaeil,et al.  A control algorithm for the stable operation of interfaced converters in microgrid systems , 2014, IEEE PES Innovative Smart Grid Technologies, Europe.

[18]  Hani Vahedi,et al.  Improved hybrid SHM-SHE modulation technique for four-leg three-level NPC inverters , 2015, IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society.

[19]  Hani Vahedi,et al.  New constraint in SHE-PWM for single phase inverter applications , 2017, 2017 IEEE Energy Conversion Congress and Exposition (ECCE).

[20]  Edris Pouresmaeil,et al.  Analysis and control of single-phase converters for integration of small-scaled renewable energy sources into the power grid , 2016, 2016 7th Power Electronics and Drive Systems Technologies Conference (PEDSTC).

[21]  K. Al-Haddad,et al.  Selective Harmonic Mitigation Based Self-Elimination of Triplen Harmonics for Single-Phase Five-Level Inverters , 2019, IEEE transactions on power electronics.

[22]  M. Mohamadian,et al.  Fixed Switching Frequency Sliding Mode Control for Single-Phase Unipolar Inverters , 2012, IEEE Transactions on Power Electronics.

[23]  Tao Xu,et al.  Implementation of Active NPC Circuits in Transformer-Less Single-Phase Inverter With Low Leakage Current , 2017, IEEE Transactions on Industry Applications.

[24]  Hani Vahedi,et al.  A generalized formulation of SHM-PAM for cascaded H-bridge inverters with non-equal DC sources , 2017, 2017 IEEE International Conference on Industrial Technology (ICIT).

[25]  Azeddine Houari,et al.  Control of single-phase grid connected photovoltaic inverter , 2016, 2016 4th International Conference on Control Engineering & Information Technology (CEIT).

[26]  Jun-Cheol Park,et al.  Predictive Current Control Methods With Reduced Current Errors and Ripples for Single-Phase Voltage Source Inverters , 2015, IEEE Transactions on Industrial Informatics.

[27]  Hani Vahedi,et al.  Modified Seven-Level Pack U-Cell Inverter for Photovoltaic Applications , 2018, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[28]  J. Bordonau,et al.  Topologies of single-phase inverters for small distributed power generators: an overview , 2004, IEEE Transactions on Power Electronics.