Optimization of voltage doublers for energy harvesting applications

Nina Roscoe, Martin Judd

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Energy harvesting is increasingly enabling the expansion of wireless sensor networks in challenging applications by replacing batteries in low power sensors. Many forms of energy harvester suffer from low output voltage which can be partially compensated for by the use of a Cockcroft-Walton voltage doubler ahead of a dc-dc converter. Impedance matching of energy harvesters is critical to achieving high output power per unit volume. This paper explores optimum impedance match for an energy harvester with a voltage doubler and dc-dc converter. Formulae are derived, and experimentally confirmed, which calculate optimum impedance match between the harvester and a load, and calculate voltage at the input to the dc-dc converter for a given wireless sensor power consumption. Further, the formula for optimum impedance match is validated against independently published results.
LanguageEnglish
Pages4904-4911
Number of pages8
JournalIEEE Sensors Journal
Volume13
Issue number12
Publication statusPublished - 15 Aug 2013

Fingerprint

Harvesters
Energy harvesting
converters
optimization
Electric potential
electric potential
impedance
sensors
energy
impedance matching
output
Sensors
electric batteries
Wireless sensor networks
Electric power utilization
expansion

Keywords

  • energy harvesting
  • voltage doubler
  • cockcroft-walton
  • magnetic field
  • inductive harvesting
  • wireless sensor networks
  • DC-DC power convertors
  • circuit optimisation
  • impedance matching
  • low-power electronics

Cite this

Roscoe, Nina ; Judd, Martin. / Optimization of voltage doublers for energy harvesting applications. In: IEEE Sensors Journal. 2013 ; Vol. 13, No. 12. pp. 4904-4911.
@article{21ead54b0c984c26be6eba4c09e3b70c,
title = "Optimization of voltage doublers for energy harvesting applications",
abstract = "Energy harvesting is increasingly enabling the expansion of wireless sensor networks in challenging applications by replacing batteries in low power sensors. Many forms of energy harvester suffer from low output voltage which can be partially compensated for by the use of a Cockcroft-Walton voltage doubler ahead of a dc-dc converter. Impedance matching of energy harvesters is critical to achieving high output power per unit volume. This paper explores optimum impedance match for an energy harvester with a voltage doubler and dc-dc converter. Formulae are derived, and experimentally confirmed, which calculate optimum impedance match between the harvester and a load, and calculate voltage at the input to the dc-dc converter for a given wireless sensor power consumption. Further, the formula for optimum impedance match is validated against independently published results.",
keywords = "energy harvesting, voltage doubler, cockcroft-walton, magnetic field, inductive harvesting, wireless sensor networks , DC-DC power convertors, circuit optimisation, impedance matching, low-power electronics",
author = "Nina Roscoe and Martin Judd",
year = "2013",
month = "8",
day = "15",
language = "English",
volume = "13",
pages = "4904--4911",
journal = "IEEE Sensors Journal",
issn = "1530-437X",
number = "12",

}

Roscoe, N & Judd, M 2013, 'Optimization of voltage doublers for energy harvesting applications' IEEE Sensors Journal, vol. 13, no. 12, pp. 4904-4911.

Optimization of voltage doublers for energy harvesting applications. / Roscoe, Nina; Judd, Martin.

In: IEEE Sensors Journal, Vol. 13, No. 12, 15.08.2013, p. 4904-4911.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Optimization of voltage doublers for energy harvesting applications

AU - Roscoe, Nina

AU - Judd, Martin

PY - 2013/8/15

Y1 - 2013/8/15

N2 - Energy harvesting is increasingly enabling the expansion of wireless sensor networks in challenging applications by replacing batteries in low power sensors. Many forms of energy harvester suffer from low output voltage which can be partially compensated for by the use of a Cockcroft-Walton voltage doubler ahead of a dc-dc converter. Impedance matching of energy harvesters is critical to achieving high output power per unit volume. This paper explores optimum impedance match for an energy harvester with a voltage doubler and dc-dc converter. Formulae are derived, and experimentally confirmed, which calculate optimum impedance match between the harvester and a load, and calculate voltage at the input to the dc-dc converter for a given wireless sensor power consumption. Further, the formula for optimum impedance match is validated against independently published results.

AB - Energy harvesting is increasingly enabling the expansion of wireless sensor networks in challenging applications by replacing batteries in low power sensors. Many forms of energy harvester suffer from low output voltage which can be partially compensated for by the use of a Cockcroft-Walton voltage doubler ahead of a dc-dc converter. Impedance matching of energy harvesters is critical to achieving high output power per unit volume. This paper explores optimum impedance match for an energy harvester with a voltage doubler and dc-dc converter. Formulae are derived, and experimentally confirmed, which calculate optimum impedance match between the harvester and a load, and calculate voltage at the input to the dc-dc converter for a given wireless sensor power consumption. Further, the formula for optimum impedance match is validated against independently published results.

KW - energy harvesting

KW - voltage doubler

KW - cockcroft-walton

KW - magnetic field

KW - inductive harvesting

KW - wireless sensor networks

KW - DC-DC power convertors

KW - circuit optimisation

KW - impedance matching

KW - low-power electronics

M3 - Article

VL - 13

SP - 4904

EP - 4911

JO - IEEE Sensors Journal

T2 - IEEE Sensors Journal

JF - IEEE Sensors Journal

SN - 1530-437X

IS - 12

ER -