Abstract
With the unceasing advancement of wide-bandgap (WBG) semiconductor technology, the minimal reverse-recovery charge Qrr and other more powerful natures of WBG transistors enable totem-pole bridgeless power factor correction to become a dominant solution for energy storage systems (ESS). This paper focuses on the design and implementation of a control structure for a totem-pole boost PFC with newfangled enhancement-mode gallium nitride field-effect transistors (eGaN FETs), not only to simplify the control implementation but also to achieve high power quality and efficiency. The converter is designed to convert a 90–264-VAC input to a 385-VDC output for a 2.6-kW output power. Lastly, to validate the methodology, an experimental prototype is characterized and fabricated. The uttermost efficiency at 230 VAC reaches 99.14%. The lowest total harmonic distortion in the current (ITHD) at high line condition (230 V) attains 1.52% while the power factor gains 0.9985.
Highlights
The grid-tied energy storage system has been one of the most prevailing technological approaches for better harnessing the power generated from “clean” and “green” energy of natural resources, reducing carbon footprints, and providing resiliency to the grid [1,2,3,4,5,6,7,8]
Four signals, including the line voltage sensing signal, the neutral voltage sensing signal, thecurrent inductor currentsignal sensing and the outputsensing voltagesignal, sensingare signal, are acquired thesignal, inductor sensing andsignal the output voltage acquired from thefrom power the power stage circuit by the signal conditioning and sensing circuits to feed to the digital control stage circuit by the signal conditioning and sensing circuits to feed to the digital control block
PFCStrategy software is implemented by enhanced pulse width modulation (EPWM) interrupt service routine (ISR) of digital signal processor (DSP) controller, with running all power factor correction (PFC) functions, and state machines in the periodical interrupt
Summary
The grid-tied energy storage system has been one of the most prevailing technological approaches for better harnessing the power generated from “clean” and “green” energy of natural resources, reducing carbon footprints, and providing resiliency to the grid [1,2,3,4,5,6,7,8]. One of the modified versions of the totem-pole bridgeless PFC is implemented with a fullconfiguration in synchronous rectification mode, comprising active H-bridge switches During the swap from negative to positive mains half-line cycle of the of the input voltage, GaN FET Q2 becomes the active switch in the high-frequency leg. In In order to circumvent andobstacles obstaclessurrounding surrounding order to circumventthe therequirements requirementson on power power performance performance and thethe bidirectional inductor current, lacking a bridge rectifier and the function interchange among among switches, bidirectional inductor current, lacking a bridge rectifier and the function interchange a new control structure is proposed with the harmony inharmony both firmware hardware expeditetothe switches, a new control structure is proposed with the in bothand firmware andto hardware control algorithm andalgorithm implementation This paper This is organized into five sections.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
