Virtual-Flux-Based Passivation of Current Control for Grid-Connected VSCs

This letter proposes a passivity-based current control (CC) scheme for voltage-source converters, featuring a virtual-flux-based damper and a passive output admittance with a wide range of time delay involved in the CC loop. The admittance modeling and experimental tests validate the effectiveness of the approach.

[1]  Lennart Harnefors,et al.  Modeling of Three-Phase Dynamic Systems Using Complex Transfer Functions and Transfer Matrices , 2007, IEEE Transactions on Industrial Electronics.

[2]  Lennart Harnefors,et al.  Passivity-Based Stabilization of Resonant Current Controllers With Consideration of Time Delay , 2014, IEEE Transactions on Power Electronics.

[3]  Frede Blaabjerg,et al.  Harmonic current control for LCL-filtered VSCs connected to ultra-weak grids , 2017, 2017 IEEE Energy Conversion Congress and Exposition (ECCE).

[4]  P. Enjeti,et al.  A new technique to reject DC-link voltage ripple for inverters operating on programmed PWM waveforms , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[5]  Weiwei Li,et al.  Analysis of Resonance Between a VSC-HVDC Converter and the AC Grid , 2018, IEEE Transactions on Power Electronics.

[6]  Massimo Bongiorno,et al.  Frequency-domain passivity-based current controller design , 2008 .

[7]  Mariusz Malinowski,et al.  Virtual flux based direct power control of three-phase PWM rectifiers , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[8]  Frede Blaabjerg,et al.  Passivity-Based Stability Analysis and Damping Injection for Multiparalleled VSCs with LCL Filters , 2017, IEEE Transactions on Power Electronics.

[9]  Frede Blaabjerg,et al.  VSC Input-Admittance Modeling and Analysis Above the Nyquist Frequency for Passivity-Based Stability Assessment , 2017, IEEE Transactions on Industrial Electronics.

[10]  Frede Blaabjerg,et al.  Passivity-Based Stability Assessment of Grid-Connected VSCs—An Overview , 2016, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[11]  Frede Blaabjerg,et al.  Harmonic Stability in Power Electronic-Based Power Systems: Concept, Modeling, and Analysis , 2019, IEEE Transactions on Smart Grid.

[12]  Lennart Harnefors,et al.  Passivity-Based Controller Design of Grid-Connected VSCs for Prevention of Electrical Resonance Instability , 2015, IEEE Transactions on Industrial Electronics.