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Describing Function Analysis of Transformer Magnetizing Inductance for Direct Power Control of Back-to-Back Modular Multilevel Converters with Advanced Grid Support

Conference ·
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This paper provides a detailed investigation into the application of describing function-based analysis for assessing transformer magnetizing inductance and its impact on system performance. The focus is on a back-to-back modular multilevel converter architecture, designed to interconnect systems operating at different frequencies. The study explores the implementation of a Direct Power Control strategy, examining its effects on transformer magnetizing inductance saturation and offering effective mitigation techniques. Furthermore, the integration of advanced grid support functionalities is highlighted, demonstrating how these enhancements bolster the converter's ability to improve grid stability and power quality, positioning it as a robust solution for modern power systems. The proposed approach is validated through extensive computer simulations based MAT LAB/Simulink domain, supported by significant case study results, confirming its practical effectiveness.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Water Power Technologies Office
DOE Contract Number:
AC36-08GO28308;
OSTI ID:
2558972
Report Number(s):
NREL/CP-5D00-94338; MainId:96120; UUID:558d0cb4-d2ff-4466-9f1d-f4f5bf2cbe32; MainAdminId:76648
Conference Information:
Presented at IECON 2024 - 50th Annual Conference of the IEEE Industrial Electronics Society, 3-6 November 2024, Chicago, Illinois
Country of Publication:
United States
Language:
English

References (14)

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Current control techniques for three-phase voltage-source PWM converters: a survey journal January 1998
A Nonlinear Stability Analysis Method of Grid-Connected Inverter conference December 2021
New Method to Measure Deep-Saturated Magnetizing Inductances for Dual Reversible Models of Single-Phase Two-Winding Transformers journal February 2021
Transformer Operation at Deep Saturation: Model and Parameter Determination journal May 2012
Overview of Control and Grid Synchronization for Distributed Power Generation Systems journal October 2006
A Survey on Neutral-Point-Clamped Inverters journal July 2010
An Adaptive Robust Predictive Current Control for Three-Phase Grid-Connected Inverters journal August 2011
Evaluation of Current Controllers for Distributed Power Generation Systems journal March 2009
Classification, Terminology, and Application of the Modular Multilevel Cascade Converter (MMCC) journal November 2011
A New Control Strategy of a VSC–HVDC System for High-Quality Supply of Industrial Plants journal October 2007

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Related Subjects

back-to-back modular multilevel converters (B2B- MMC)
describing function (DF)
feedback linearization based direct power control (FL -DPC)
point of common coupling (PCC)
POWER TRANSMISSION AND DISTRIBUTION
transformer magnetizing inductance (Lm)