학술논문

Online Inductance Identification Method for Dual Three-phase PMSG of Wind Turbines
Document Type
Conference
Source
2024 IEEE 7th International Electrical and Energy Conference (CIEEC) Electrical and Energy Conference (CIEEC), 2024 IEEE 7th International. :4326-4331 May, 2024
Subject
Engineered Materials, Dielectrics and Plasmas
Power, Energy and Industry Applications
Inductance
Delay effects
Windings
Synchronous generators
Robustness
Real-time systems
Permanent magnets
Dual three-phase machine
permanent magnet synchronous generator
inductance identification
high frequency injection
Language
Abstract
In this article, an online inductance identification method applied to dual three-phase permanent magnet synchronous generator (DTP-PMSG) is proposed. Based on the proposed method, the self-inductance and mutual inductance can be obtained in real time. Firstly, the physical model of DTP-PMSG is investigated, where the cross-coupling characteristics of the inductance is analyzed. Then, an inductance identification strategy based on the rotation signal injection under a single three-phase winding is proposed. In order to improve the robustness of the proposed method, the composite filter system is designed to achieve the signal processing in the inductance identification. The self-inductance and mutual inductance can be finally obtained based on the extracted high-frequency signal in the dual three-phase windings. For improving the identification accuracy, the inverter nonlinearity effect and the digital delay effect are analyzed and compensated. The effectiveness of the proposed method is verified by the experimental results.