Design and Implementation of High-Efficiency Converter for Direct Current Microgrid Applications

Abstract

In this study, a boost converter has been designed and implemented with high efficiency and power factor correction for microgrid applications. The designed converter consists of two main parts: the control and the power module. The control module performs functions such as reading analog data, exchanging data with other converters, operating control algorithms, and energy management among distributed generation units. On the other hand, the power module provides power transfer to the load by controlling the switching device. Also, electromagnetic interference is reduced thanks to the filters in the power module. The designed converter has a nominal power of 1000 W and provides 380 VDC output voltage regulation in the grid's input range of 85 VAC and 265 VAC. The efficiency of the proposed converter under full load is 97.02%. In addition, the converter efficiency has been tested according to European efficiency standards. The corresponding yield is measured as 95.89%. The total harmonic distortion of the input current is comfortably within limits set by the EN 6100-3-2 Class D Limits (A) standards, measuring at 1.71% when operating at full load and with a power factor of 0.998. It can be used in microgrid applications designed for high-efficiency energy management. © 2023 Istanbul University. All rights reserved.