Abstract

This paper presents an analog power sensor to measure DC-DC converter output power for DC-DC voltage regulation and photo-voltaic (PV) maximum power point tracking (MPPT) applications. The proposed power sensor senses current without using a conventional series resistor, and provides power information without using additional circuits for power calculation. The proposed circuit is implemented using a switched capacitor differentiator and a voltage-To-Time converter. Compared to the resistor based sensing method that requires a current-To-voltage circuit, a gain block, two analog-To-digital converters (ADCs) and a digital signal processor (DSP), the proposed power sensor provides lower complexity, lower area and lower power consumption for MPPT PV applications. A prototype module is designed and the measured results show 14.1% gain error and 9.4% offset error in the power measurements.

Original languageEnglish (US)
Title of host publication9th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781538623114
DOIs
StatePublished - Jun 28 2018
Event9th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2018 - Puerto Vallarta, Mexico
Duration: Feb 25 2018Feb 28 2018

Other

Other9th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2018
CountryMexico
CityPuerto Vallarta
Period2/25/182/28/18

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Keywords

  • Boost Converter
  • Current Sensor
  • isolated sensing
  • loss less sensing
  • Maximum Power Point Tracking
  • MPPT
  • Photovoltaic
  • Power Sensor
  • Solar cell
  • Switching Regulator

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture

Cite this

Singh, S., Mandal, D., Bakkaloglu, B., & Kiaei, S. (2018). Sense resistor-free analog power sensor for boost converter with 14.1% gain error and 9.4% offset error. In 9th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2018 - Proceedings (pp. 1-4). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/LASCAS.2018.8399931