High Voltage Quality Control Strategy of Microgrid Main Inverter for Islanded Microgrid

Microgrid voltage quality is related to the distributed generation (DG) interfacing inverters (DGI), especially in the islanded mode. To improve the point of common coupling (PCC) voltage quality, a high voltage quality control strategy has been proposed for the microgrid main inverter (MMI) which operate as a voltage source in the islanded microgrid. Firstly, the harmonics degradation mechanism of inverters based microgrid is analyzed. And it can be find that the PCC voltage quality will be distorted when DG interfacing inverters work without voltage quality control loop. Then, the harmonic voltage control principle of MMI is shown, and the computation load, signal sampling and capacity limitation are considered. Finally, the validity of proposed control strategy has been proven by the simulation and experimental results.

[1]  Yun Wei Li,et al.  Hybrid Voltage and Current Control Approach for DG-Grid Interfacing Converters With LCL filters , 2013, IEEE Transactions on Industrial Electronics.

[2]  Abrez Mondal,et al.  Improved frequency regulation in an islanded mixed source microgrid through coordinated operation of DERs and smart loads , 2017, 2017 IEEE/IAS 53rd Industrial and Commercial Power Systems Technical Conference (I&CPS).

[3]  Fei Jiang,et al.  Analysis and control of bridge-type fault current limiter integrated with the dynamic voltage restorer , 2018 .

[4]  Vinod Khadkikar,et al.  Direct Control of the Inverter Impedance to Achieve Controllable Harmonic Sharing in the Islanded Microgrid , 2017, IEEE Transactions on Industrial Electronics.

[5]  Frede Blaabjerg,et al.  Active Harmonic Filtering Using Current-Controlled, Grid-Connected DG Units With Closed-Loop Power Control , 2014, IEEE Transactions on Power Electronics.

[6]  Frede Blaabjerg,et al.  Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions , 2011, IEEE Transactions on Industrial Electronics.

[7]  Qing-Chang Zhong,et al.  Harmonic Droop Controller to Reduce the Voltage Harmonics of Inverters , 2013, IEEE Transactions on Industrial Electronics.

[8]  Thomas Ellinger,et al.  Dynamic Interaction Analysis of APF Systems , 2014, IEEE Transactions on Industrial Electronics.

[9]  Josep M. Guerrero,et al.  Reduction of voltage harmonics for parallel-operated inverters , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[10]  Yun Wei Li,et al.  A Flexible Harmonic Control Approach Through Voltage-Controlled DG–Grid Interfacing Converters , 2012, IEEE Transactions on Industrial Electronics.

[11]  Mohsen Hamzeh,et al.  Harmonic and Negative-Sequence Current Control in an Islanded Multi-Bus MV Microgrid , 2014, IEEE Transactions on Smart Grid.

[12]  M. Nasir Uddin,et al.  An optimal scheduling controller for virtual power plant and microgrid integration using binary backtracking search algorithm , 2017, 2017 IEEE Industry Applications Society Annual Meeting.

[13]  Yan Li,et al.  Microgrid stability: Classification and a review , 2016 .

[14]  J. Miret,et al.  Decentralized Control for Parallel Operation of Distributed Generation Inverters Using Resistive Output Impedance , 2005, IEEE Transactions on Industrial Electronics.

[15]  Jean-Philippe Martin,et al.  Harmonic Power Sharing With Voltage Distortion Compensation of Droop Controlled Islanded Microgrids , 2018, IEEE Transactions on Smart Grid.

[16]  Vijay Kumar Garg,et al.  Transition from conventional to modern grids: Modern grid include microgrid and smartgrid , 2017, 2017 4th International Conference on Signal Processing, Computing and Control (ISPCC).

[17]  Frede Blaabjerg,et al.  Frequency Response Analysis of Current Controllers for Selective Harmonic Compensation in Active Power Filters , 2009, IEEE Transactions on Industrial Electronics.

[18]  Heidar Ali Talebi,et al.  Nonlinear Load Sharing and Voltage Compensation of Microgrids Based on Harmonic Power-Flow Calculations Using Radial Basis Function Neural Networks , 2018, IEEE Systems Journal.

[19]  Yun Wei Li,et al.  Generalized Closed-Loop Control Schemes with Embedded Virtual Impedances for Voltage Source Converters with LC or LCL Filters , 2012, IEEE Transactions on Power Electronics.

[20]  Zhikang Shuai,et al.  Research of the high supply voltage quality control for solid-state transformer , 2018 .

[21]  Josep M. Guerrero,et al.  Output impedance design of parallel-connected UPS inverters with wireless load-sharing control , 2005, IEEE Transactions on Industrial Electronics.

[22]  Maurizio Cirrincione,et al.  A Single-Phase DG Generation Unit with Shunt Active Power Filter Capability by Adaptive Neural Filtering , 2008, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.