Model Predictive Control of Dual-Mode Operations Z-Source Inverter: Islanded and Grid-Connected

This paper presents model predictive control of dual-mode Z-source inverters (ZSIs) with capability to operate in islanded and grid-connected mode. The transition from islanded to grid-connected mode and vice versa can cause significant deviation in voltage and current due to mismatch in phase, frequency, and amplitude of voltages. The proposed controller offers seamless transition between the two modes of operations. The main predictive controller objectives are direct decoupled power control in grid-connected mode and load voltage regulation in islanded mode. The proposed direct decoupled active and reactive power control in grid-connected mode enables the dual-mode ZSI to behave as a power conditioning unit for ancillary services such as reactive power compensation. The proposed controller features simplicity, seamless transition between modes of operations, fast dynamic response, and small tracking error under steady-state condition of controller objectives. The operation of the proposed system is verified experimentally.

[1]  Longya Xu,et al.  Dynamic Modeling and Analysis of $Z$ Source Converter—Derivation of AC Small Signal Model and Design-Oriented Analysis , 2007, IEEE Transactions on Power Electronics.

[2]  Xiaoqiang Guo,et al.  Improved current regulation of three-phase grid-connected voltage-source inverters for distributed generation systems , 2010 .

[3]  S. A. Saleh,et al.  On the Experimental Performance of a Coordinated Antiislanding Protection for Systems With Multiple DGUs , 2017, IEEE Transactions on Power Electronics.

[4]  ch vijay chandar,et al.  Coordinated Control and Energy Management of Distributed Generation Inverters in a Microgrid , 2016 .

[5]  Ali Davoudi,et al.  Unifying Distributed Dynamic Optimization and Control of Islanded DC Microgrids , 2017, IEEE Transactions on Power Electronics.

[6]  G Aravindhan,et al.  Power Control Flexibilities for Grid-Connected Multi-Functional Photovoltaic Inverters , 2015 .

[7]  Chun Li.  Unintentional islanding of distributed generation — Operating experiences from naturally-occurred events , 2014, 2014 IEEE PES General Meeting | Conference & Exposition.

[8]  Fang Zheng Peng.  Z-source inverter , 2002 .

[9]  Ebrahim Farjah,et al.  Power Control and Management in a Hybrid AC/DC Microgrid , 2014, IEEE Transactions on Smart Grid.

[10]  J. Van Mierlo,et al.  A DSP-Based Dual-Loop Peak DC-link Voltage Control Strategy of the Z-Source Inverter , 2012, IEEE Transactions on Power Electronics.

[11]  Yung-Ruei Chang,et al.  Design of High-Performance Stand-Alone and Grid-Connected Inverter for Distributed Generation Applications , 2013, IEEE Transactions on Industrial Electronics.

[12]  P. Goulart,et al.  High-Speed Finite Control Set Model Predictive Control for Power Electronics , 2015, IEEE Transactions on Power Electronics.

[13]  F.Z. Peng,et al.  Z-source inverter , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[14]  Edris Pouresmaeil,et al.  A Control Technique for Integration of DG Units to the Electrical Networks , 2013, IEEE Transactions on Industrial Electronics.

[15]  M. R. Iravani,et al.  Control of a Multiple Source Microgrid With Built-in Islanding Detection and Current Limiting , 2012, IEEE Transactions on Power Delivery.

[16]  Reza Ahmadi,et al.  Model Predictive-Based Maximum Power Point Tracking for Grid-Tied Photovoltaic Applications Using a Z-Source Inverter , 2016, IEEE Transactions on Power Electronics.

[17]  Julia Merino Fernández.  Islanding Detection in Microgrids Using Harmonic Signatures , 2013 .

[18]  Yongzheng Zhang,et al.  Islanding Detection Assessment of Multi-Inverter Systems With Active Frequency Drifting Methods , 2008, IEEE Transactions on Power Delivery.

[19]  Marian P. Kazmierkowski,et al.  State of the Art of Finite Control Set Model Predictive Control in Power Electronics , 2013, IEEE Transactions on Industrial Informatics.

[20]  Wanxing Sheng,et al.  Self-Synchronized Synchronverters: Inverters Without a Dedicated Synchronization Unit , 2014, IEEE Transactions on Power Electronics.

[21]  Dushan Boroyevich,et al.  Modes of Operation and System-Level Control of Single-Phase Bidirectional PWM Converter for Microgrid Systems , 2012, IEEE Transactions on Smart Grid.

[22]  Josep M. Guerrero,et al.  An Improved Control Strategy for the Three-Phase Grid-Connected Inverter , 2015 .

[23]  Wenjun Liu,et al.  Solid-State Circuit Breaker Snubber Design for Transient Overvoltage Suppression at Bus Fault Interruption in Low-Voltage DC Microgrid , 2017, IEEE Transactions on Power Electronics.

[24]  L.A.C. Lopes,et al.  Performance assessment of active frequency drifting islanding detection methods , 2006, IEEE Transactions on Energy Conversion.

[25]  Frede Blaabjerg,et al.  Impedance source power electronic converters , 2016 .

[26]  Li Li,et al.  A Frequency-Fixed SOGI-Based PLL for Single-Phase Grid-Connected Converters , 2017, IEEE Transactions on Power Electronics.

[27]  Behrooz Mirafzal,et al.  A Method of Seamless Transitions Between Grid-Tied and Stand-Alone Modes of Operation for Utility-Interactive Three-Phase Inverters , 2014, IEEE Transactions on Industry Applications.

[28]  Yangguang Yan,et al.  Seamless Transfer of Single-Phase Grid-Interactive Inverters Between Grid-Connected and Stand-Alone Modes , 2010, IEEE Transactions on Power Electronics.

[29]  Suleiman M. Sharkh,et al.  Control of Transient Power During Unintentional Islanding of Microgrids , 2015, IEEE Transactions on Power Electronics.

[30]  Xing Zhang,et al.  Passive-Islanding Detection Method Using the Wavelet Packet Transform in Grid-Connected Photovoltaic Systems , 2016, IEEE Transactions on Power Electronics.

[31]  Frede Blaabjerg,et al.  An Enhanced Islanding Microgrid Reactive Power, Imbalance Power, and Harmonic Power Sharing Scheme , 2015, IEEE Transactions on Power Electronics.

[32]  Frede Blaabjerg,et al.  Accurate and Less-Disturbing Active Antiislanding Method Based on PLL for Grid-Connected Converters , 2010, IEEE Transactions on Power Electronics.

[33]  S. K. Sahoo,et al.  Single-Phase Inverter Control Techniques for Interfacing Renewable Energy Sources With Microgrid—Part I: Parallel-Connected Inverter Topology With Active and Reactive Power Flow Control Along With Grid Current Shaping , 2011, IEEE Transactions on Power Electronics.

[34]  Frank L. Lewis,et al.  Control and Modeling of Microgrids , 2017 .

[35]  R. Belmans,et al.  Testing the islanding protection function of photovoltaic inverters , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[36]  Konstantinos O. Oureilidis,et al.  A Fault Clearing Method in Converter-Dominated Microgrids With Conventional Protection Means , 2016, IEEE Transactions on Power Electronics.

[37]  Heung-Geun Kim,et al.  PLL-Based Seamless Transfer Control Between Grid-Connected and Islanding Modes in Grid-Connected Inverters , 2014, IEEE Transactions on Power Electronics.

[38]  OHANNES,et al.  Cascaded Current – Voltage Control to Improve the Power Quality for a Grid-Connected Inverter with a Local Load , 2016 .

[39]  J. K. Pedersen,et al.  Analysis of wind farm islanding experiment , 2000 .

[40]  Ajeet Rohatgi,et al.  Determining the relative effectiveness of islanding detection methods using phase criteria and nondetection zones , 2000 .

[41]  S. Perera,et al.  Microgrids of Commercial Buildings: Strategies to Manage Mode Transfer From Grid Connected to Islanded Mode , 2014, IEEE Transactions on Sustainable Energy.

[42]  R. Iravani,et al.  Current injection for active islanding detection of electronically-interfaced distributed resources , 2006, IEEE Transactions on Power Delivery.