An Enhanced Time-Delay-Based Reference Current Identification Method for Single-Phase System
- Publisher:
- Institute of Electrical and Electronics Engineers
- Publication Type:
- Journal Article
- Citation:
- IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 2022, 3, (3), pp. 683-693
- Issue Date:
- 2022-08-06
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Filename | Description | Size | |||
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An_Enhanced_Time-Delay-Based_Reference_Current_Identification_Method_for_Single-Phase_System.pdf | Published version | 4.95 MB |
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This article proposes an enhanced time-delay-based current component identification method for single-phase systems to overcome the absence of filtering and poor grid frequency response of conventional method. The proposed technique integrates a delayed signal cancellation with a time-delay unit, to incorporate a dc offset rejection feature, while maintaining speedy and precise extraction of orthogonal current components. The frequency adaption is also developed through the incorporation of linear interpolation. The dynamic and steady-state performance of the proposed method is analyzed and compared with two advanced second-order generalized integrator (SOGI) based methods, namely, modified SOGI and cascaded SOGI under different operating scenarios. The simulation and experimental results substantiate the advantage of zero steady-state error and lower settling time of the proposed solution while exhibiting comparable overshoot with advanced SOGI-based methods.
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