Work

Adaptive Phase Synthesizer With In-Loop Variable Gain Control for Reliable Grid Integration

Year: 2024

Type: article

Abstract: Modern electrical distribution networks face challenges from dc offsets and harmonics within the grid voltage, often caused by nonlinear loads or power electronics devices. This article proposes a phase-locked loop (PLL) as an adaptive phase synthesizer with in-loop variable gain control (VGC) to achieve reliable grid integration. The design of this PLL builds upon a type-3 in-loop filter-based second-order generalized integrator (ISOGI), known for effective dc offset and harmonics filtering. To optimize transient performance, the ISOGI-VGC structure is introduced. The VGC controller provides dynamic bandwidth adjustment, enhancing both transient and steady-state response. Comparative simulations demonstrate the superiority of the proposed PLL design under various grid disturbances. Further validation is provided through a hardware prototype tested on a dSPACE real-time platform. The results confirm that the ISOGI-VGC-based type-3 PLL delivers improved performance and reliable grid integration.

Source: IEEE Journal of Emerging and Selected Topics in Power Electronics

DOI: 10.1109/jestpe.2024.3486049

Authors: Surya Prakash, Mohamed Alkhatib, Omar Al Zaabi, Khalifa Al Hosani, Ranjan Kumar Behera, Utkal Ranjan Muduli

Institutions: National Institute of Technology Jamshedpur, United Arab Emirates University, Khalifa University of Science and Technology, Indian Institute of Technology Patna

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $2,495