Design Optimization of an AC Filter Inductor for 350kW High-Effi-ciency Inverter Applications
Conference: PCIM Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/06/2025 - 05/08/2025 at Nürnberg, Germany
doi:10.30420/566541267
Proceedings: PCIM Conference 2025
Pages: 8Language: englishTyp: PDF
Authors:
Thummala, Prasanth; Cao, Jinzhou; Liu, Bin; Kazemi, Morteza; Qi, Yu; Zou, Yangju; Pang, Yong
Abstract:
This paper presents the optimized design and FEM simulations of a line-frequency AC filter inductor for a 350 kW solar inverter using ANSYS Maxwell. The design enhances efficiency while minimizing losses and weight through the optimization of core material, winding configuration, and air gap. A reluctance model of the proposed inductor is developed to provide initial analytical insights. FEM simulations are performed to analyze the magnetic flux distribution, core saturation, and key performance parameters, including incremental inductance under DC bias, AC resistance, and maximum flux density. The simu-lation results are validated against experimental measurements, demonstrating strong agreement and confirming the accuracy of the design approach.