Design and Implementation of a Three-Phase Active T-Type NPC Inverter for Low-Voltage Microgrids - Energy and Power Engineering

EPE > Vol.9 No.4, April 2017

Energy and Power Engineering

Volume 9, Issue 4 (April 2017)

ISSN Print: 1949-243X ISSN Online: 1947-3818

Google-based Impact Factor: 0.66 Citations

Design and Implementation of a Three-Phase Active T-Type NPC Inverter for Low-Voltage Microgrids ()

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DOI: 10.4236/epe.2017.94B009 3,279 Downloads 6,197 Views Citations

Author(s)

Rick Chen¹, Ying-Yu Tzou²

Affiliation(s)

¹AcBel Polytech Inc., New Taipei city.
²Institute of Electrical Control Engineering, National Chiao Tung University, Hsinchu.

ABSTRACT

This paper presents the design and implementation of a 3 kVA three-phase active T-type neutral-point clamped (NPC) inverter with GaN power devices for low-voltage microgrids. The designed inverter is used in a battery-based energy system (BESS) for power conversion optimization in applications to low-voltage microgrids. A modular design method has been developed for the design and implementation of the AT-NPC inverter. Experimental verification has been carried out based on a 3-kW three-phase T-Type NPC grid-connected inverter. FPGA based digital control technique has been developed for the current control of the three-level three-phase grid inverter. A maximum efficiency of 98.49% has been achieved within a load range from 50% to 75%.

KEYWORDS

Active T-Type NPC Inverter, Modular Design Methodology, Loss Analysis, Efficiency Optimization

Share and Cite:

Chen, R. and Tzou, Y. (2017) Design and Implementation of a Three-Phase Active T-Type NPC Inverter for Low-Voltage Microgrids. Energy and Power Engineering, 9, 70-77. doi: 10.4236/epe.2017.94B009.

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