Open AccessProceedings Article
An comparator based active rectifier for vibration energy harvesting systems
Yang Sun,In-Young Lee,Chang-Jin Jeong,Seok-Kyun Han,Sang-Gug Lee +4 more
- pp 1404-1408
TLDR
A highly efficient active switch-only rectifier is proposed by replacing the conventional full bridge rectifier with the cross-coupled active one in the passive switch- only rectifier, together with simple and effective control circuits, which shows both good power extraction and power conversion capability.Abstract:
Harvesting ambient vibration energy through PE means is a popular energy harvesting technique. The main limitation of this harvesting system is in their interface circuitry. In this paper, a highly efficient active switch-only rectifier is proposed. By replacing the conventional full bridge rectifier with the cross-coupled active one in the passive switch-only rectifier, together with simple and effective control circuits, the proposed rectifier shows both good power extraction and power conversion capability. Based on 0.18 um CMOS technology, the simulated power efficiency of the proposed rectifier is 91%, and the output power is 144 uW with a 1 uF capacitor and a 95 kΩ load. The proposed active switch-only rectifier improves upon the extractable power and efficiency by 1.9 times and 1.5 times, respectively, compared to the conventional one; and improves upon the efficiency by 1.5 times compared with passive switch-only rectifier.read more
Citations
More filters
Journal ArticleDOI
An Integrated High-Performance Active Rectifier for Piezoelectric Vibration Energy Harvesting Systems
TL;DR: In this article, an active full-bridge rectifier is proposed for PE vibration energy harvesting systems, which solves the dc-offset problem of comparator-based active diode, minimizes the voltage drop along the conduction path, and extracts more power from the transducer, all of which lead to better power extraction and conversion capability.
Journal ArticleDOI
A Self-Powered High-Efficiency Rectifier With Automatic Resetting of Transducer Capacitance in Piezoelectric Energy Harvesting Systems
TL;DR: This paper presents a self-powered rectifier for piezoelectric energy harvesting applications, and the key idea of the proposed system is to reset the transducer capacitor at optimal instants to maximize the extracted power.
Journal ArticleDOI
Signal-Powered Low-Drop-Diode Equivalent Circuit for Full-Wave Bridge Rectifier
L. Karthikeyan,Bharadwaj Amrutur +1 more
TL;DR: In this paper, a low-drop diode equivalent, which mimics a diode using linear region-operated MOSFET, was used to replace the four diodes in a full-wave bridge rectifier, which is a part of the more advanced rectifiers like switch-only and bias-flip rectifiers.
Patent
Low drop diode equivalent circuit
TL;DR: In this article, a low-drop diode equivalent circuit is proposed to replace the rectifier diodes and minimise power loss in a full wave bridge rectifier, which is the basic full wave rectifier and is a part of the more advanced rectifiers like switch-only and bias-flip rectifiers.
Proceedings ArticleDOI
Comparison between active AC-DC converters for low power energy harvesting systems
TL;DR: This study shows that the most efficient rectifying circuit among the surveyed AC-DC converter circuits is the active bridge voltage doubler, which provides a minimum voltage drop and 2X the amount of electrical power.
References
More filters
Book
Energy Scavenging for Wireless Sensor Networks: with Special Focus on Vibrations
TL;DR: In this paper, the authors present an analytical model of a piezoelectric generator with an inplane gap closing converter for V2E power conversion, which is based on the basic dynamic model of the generator's bimorph mounted as a cantilever.
Journal ArticleDOI
Design considerations for ultra-low energy wireless microsensor nodes
Benton H. Calhoun,Denis C. Daly,Naveen Verma,D.F. Finchelstein,David D. Wentzloff,Andrew H.-J. Wang,SeongHwan Cho,Anantha P. Chandrakasan +7 more
TL;DR: This tutorial paper examines architectural and circuit design techniques for a microsensor node operating at power levels low enough to enable the use of an energy harvesting source and proposes architecture for achieving the required ultra-low energy operation.
Journal ArticleDOI
Fully integrated wideband high-current rectifiers for inductively powered devices
Maysam Ghovanloo,Khalil Najafi +1 more
TL;DR: In this paper, the design and implementation of fully integrated rectifiers in BiCMOS and standard CMOS technologies for rectifying an externally generated RF carrier signal in inductively powered wireless devices, such as biomedical implants, radio-frequency identification (RFID) tags, and smartcards to generate an on-chip dc supply.
Journal ArticleDOI
An Efficiency-Enhanced CMOS Rectifier With Unbalanced-Biased Comparators for Transcutaneous-Powered High-Current Implants
TL;DR: An efficiency-enhanced integrated full-wave CMOS rectifier for the transcutaneous power transmission in high-current biomedical implants is presented and the comparator-controlled switches are developed to minimize the voltage drop along the conducting path while achieving the unidirectional current flow.
Proceedings ArticleDOI
A 950 MHz rectifier circuit for sensor networks with 10 m-distance
TL;DR: In this paper, a high-sensitivity rectifier was fabricated in a 0.3 /spl mu/m CMOS technology, which can rectify an RF signal less than the NMOS threshold voltage by using a bias voltage between the gate and the drain terminals of a transistor.