Compact GaN-Based 25kW, 480V Three-Level Active Front End Rectifier

Adeli M. H., Deniz E., ALTIN N., ÖZDEMİR Ş., Nasiri A.

6th IEEE International Conference on Direct Current Microgrids, ICDCM 2024, South Carolina, United States Of America, 5 - 08 August 2024, (Full Text) identifier

  • Nəşrin Növü: Conference Paper / Full Text
  • Doi nömrəsi: 10.1109/icdcm60322.2024.10665131
  • Çap olunduğu şəhər: South Carolina
  • Ölkə: United States Of America
  • Açar sözlər: 3L-ANPC, active front end, compact design, DC Microgrids, GaN FETs, high efficiency, PCB-based planar inductor
  • Açıq Arxiv Kolleksiyası: Konfrans Materialı
  • Adres: Bəli

Qısa məlumat

Interface units are needed to connect DC microgrids to the AC grid. This paper presents a compact and high-efficiency 25kW 480V Gallium Nitride (GaN) based bidirectional Three-Level Active-Neutral-Point-Clamped (3L-ANPC) converter for DC microgrids. The entire system, including the FPGA, DC-link capacitors, switching devices in the topology, and AC grid inductive filters, is integrated onto a single board. The 3L-ANPC topology provides balanced distribution of power losses and voltage stress among the switches. A 200kHz switching frequency is used for the GaN devices to reduce the size of passive elements. A PCB-based DC busbar is designed to minimize inductance, ensure a compact size, and reduce parasitic capacitances. Additionally, PCB-based inductors are designed to minimize size and tolerance on inductance value and reduce magnetic flux pollution in the converter. System control is performed using an Intel ultra-high-speed FPGA. Simulation and experimental results validate the electrical and thermal performance of the proposed design.