Abstract
This article proposes the design of H∞ -based robust current controller for single-phase grid-feeding voltage source inverter with an LCL filter. The main objective of the proposed controller is to have good reference tracking, disturbance rejection and sufficient LCL resonance damping under a large range of variations of grid impedance. Based on the aforementioned performance requirements, frequency dependent weighting functions are designed. Subsequently, the sub-optimal control problem is formulated and solved to determine the stabilizing controller. Computational footprint of the controller is addressed for ease-of-implementability on low-cost controller boards. Finally controller hardware-in-the-loop simulations on OPAL-RT are performed in the validation stage to obtain performance guarantees of the controller. The proposed controller exhibits fast response during transients and superior reference tracking, disturbance rejection at steady-state when compared with proportional- and resonant-based current controllers.
Original language | English (US) |
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Title of host publication | 2020 52nd North American Power Symposium, NAPS 2020 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781728181929 |
DOIs | |
State | Published - Apr 11 2021 |
Event | 52nd North American Power Symposium, NAPS 2020 - Tempe, United States Duration: Apr 11 2021 → Apr 13 2021 |
Publication series
Name | 2020 52nd North American Power Symposium, NAPS 2020 |
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Conference
Conference | 52nd North American Power Symposium, NAPS 2020 |
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Country/Territory | United States |
City | Tempe |
Period | 4/11/21 → 4/13/21 |
Bibliographical note
Funding Information:ACKNOWLEDGMENT The authors acknowledge Advanced Research Projects Agency-Energy (ARPA-E) for supporting this research through the project titled “Rapidly Viable Sustained Grid” via grant no. DE-AR0001016.
Publisher Copyright:
© 2021 IEEE.
Keywords
- H∞-based loop shaping
- current controller
- parametric uncertainty
- robust control
- voltage source inverter