Triple-mode photovoltaic power management: Achieving high efficiency against harvesting and load variability

Jiangyi Li, Jae-sun Seo, Ioannis Kymissis, Mingoo Seok

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We present a triple-mode energy-harvesting power management unit (PMU) that interfaces a photovoltaic (PV) cell and delivers a regulated supply (VLoad) of 0.45V while storing remaining energy in a 3V rechargeable battery. The objective is to maximize the end-to-end conversion efficiency of the PMU against the variabilities of harvested energy and load power dissipation. Specifically, it uses an intermediate energy-storage capacitor to minimize the involvement (charging or discharging) of a battery in the conversion process over time. The experiments show that the proposed PMU can achieve 2.2× higher end-to-end conversion efficiency than the conventional dual-mode architectures when faced with typical variabilities in harvested energy and load power dissipation.

Original languageEnglish (US)
Title of host publication2016 IEEE Asian Solid-State Circuits Conference, A-SSCC 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages289-292
Number of pages4
ISBN (Electronic)9781509037001
DOIs
StatePublished - Feb 6 2017
Event12th IEEE Asian Solid-State Circuits Conference, A-SSCC 2016 - Toyama, Japan
Duration: Nov 7 2016Nov 9 2016

Other

Other12th IEEE Asian Solid-State Circuits Conference, A-SSCC 2016
CountryJapan
CityToyama
Period11/7/1611/9/16

Keywords

  • Photovoltaic (PV) energy harvesting
  • power management
  • switched-capacitor DC-DC converter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture

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    Li, J., Seo, J., Kymissis, I., & Seok, M. (2017). Triple-mode photovoltaic power management: Achieving high efficiency against harvesting and load variability. In 2016 IEEE Asian Solid-State Circuits Conference, A-SSCC 2016 - Proceedings (pp. 289-292). [7844192] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASSCC.2016.7844192