Enabling Criteria and Circuits for Low-Power High-Density Off-Grid Converters

Bar Halivni, Michael Evzelman, Mor Mordechai Peretz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a hardware efficient realization of a low power grid-tied power supply. The SMPS is enabled through flyback configuration accompanied by simple control circuitry for voltage-dependent constant on-time, which have been designed to maximize power density. It also includes start and power up circuits to enable operation from 85Vac to 120Vac. The design is entirely based on off-the-shelf components and customized magnetic element and results in a well-regulated 3V output voltage from 110Vac, with peak efficiency of 84%, and volume of 1 cm3, The very high power density (3kW/Liter, 50W/cui) is enabled by an optimization process for characterizing the magnetic element, mode of operation and values of key components to facilitate a ratio of Iavg/Irms close to unity throughout the range of the input voltage. Experimental results validate the optimization method, and verify the operation of the control and power up circuits.

Original languageEnglish
Title of host publication2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781538655412
DOIs
StatePublished - 10 Sep 2018
Event19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018 - Padova, Italy
Duration: 25 Jun 201828 Jun 2018

Publication series

Name2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018

Conference

Conference19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018
Country/TerritoryItaly
CityPadova
Period25/06/1828/06/18

ASJC Scopus subject areas

  • Modeling and Simulation
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization

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