scholarly journals Self-Oscillating Boost Converter of Wiegand Pulse Voltage for Self-Powered Modules

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5373
Author(s):  
Xiaoya Sun ◽  
Haruchika Iijima ◽  
Stefano Saggini ◽  
Yasushi Takemura
Keyword(s):  
Power Supply ◽  
Electricity Generation ◽  
Power Source ◽  
Boost Converter ◽  
Pulse Voltage ◽  
Pickup Coil ◽  
Induced Voltage ◽  
Dc Voltage ◽  
Magnetic Wire ◽  
Self Powered

This paper introduces a new method of electricity generation using a Wiegand sensor. The Wiegand sensor consists of a magnetic wire and a pickup coil wound around it. This sensor generates a pulse voltage of approximately 5 V and 20 µs width as an induced voltage in the pickup coil. The aim of this study is to generate a DC voltage of 5 V from the sensor, which is expected to be used as a power source in self-powered devices and battery-less modules. We report on the design and verification of a self-oscillating boost converter circuit in this paper. A DC voltage obtained by rectifying and smoothing the pulse voltage generated from the Wiegand sensor was boosted by the circuit. A stable DC output voltage in the order of 5 V for use as a power supply in electronics modules was successfully obtained. A quantitative analysis of the power generated by the Wiegand sensor revealed a suitable voltage–current range for application in self-powered devices and battery-less modules.

Reverse Electrowetting-on-Dielectric Energy Harvesting Integrated With Charge Amplifier and Rectifier for Self-Powered Motion Sensors

2020 ◽  
Author(s):  
Pashupati R. Adhikari ◽  
Nishat T. Tasneem ◽  
Dipon K. Biswas ◽  
Russell C. Reid ◽  
Ifana Mahbub
Keyword(s):  
Energy Harvester ◽  
Schottky Diodes ◽  
Boost Converter ◽  
Motion Sensor ◽  
Motion Sensors ◽  
Frequency Range ◽  
Charge Amplifier ◽  
Electrowetting On Dielectric ◽  
Dc Voltage ◽  
Self Powered

Abstract This paper presents a reverse electrowetting-on-dielectric (REWOD) energy harvester integrated with rectifier, boost converter, and charge amplifier that is, without bias voltage, capable of powering wearable sensors for monitoring human health in real-time. REWOD has been demonstrated to effectively generate electrical current at a low frequency range (< 3 Hz), which is the frequency range for various human activities such as walking, running, etc. However, the current generated from the REWOD without external bias source is insufficient to power such motion sensors. In this work, to eventually implement a fully self-powered motion sensor, we demonstrate a novel bias-free REWOD AC generation and then rectify, boost, and amplify the signal using commercial components. The unconditioned REWOD output of 95–240 mV AC is generated using a 50 μL droplet of 0.5M NaCl electrolyte and 2.5 mm of electrode displacement from an oscillation frequency range of 1–3 Hz. A seven-stage rectifier using Schottky diodes having a forward voltage drop of 135–240 mV and a forward current of 1 mA converts the generated AC signal to DC voltage. ∼3 V DC is measured at the boost converter output, proving the system could function as a self-powered motion sensor. Additionally, a linear relationship of output DC voltage with respect to frequency and displacement demonstrates the potential of this REWOD energy harvester to function as a self-powered wearable motion sensor.

scholarly journals Output Characteristics and Circuit Modeling of Wiegand Sensor

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 2991 ◽  
Author(s):  
Xiaoya Sun ◽  
Tsutomu Yamada ◽  
Yasushi Takemura
Keyword(s):  
Equivalent Circuit ◽  
Circuit Simulation ◽  
Output Pulse ◽  
Power Source ◽  
Internal Resistance ◽  
Pulse Voltage ◽  
Simulink Simulation ◽  
Magnetic Wire ◽  
Output Characteristics ◽  
Significant Attention

A fast magnetization reversal in a twisted FeCoV wire induces a pulse voltage in a pick-up coil wound around a wire. The Wiegand sensor is composed of this magnetic wire and the pick-up coil. As the output pulse voltage does not depend on a changing ratio of the applied magnetic field to switch the magnetization of the wire, the Wiegand sensor is used for to perform rotation and other detections. Recently, the Wiegand sensor has attracted significant attention as a power supply for battery-less operation of electric devices and for energy harvesting. In this study, we propose a concept of obtaining an intrinsic pulse voltage from the Wiegand sensor as its power source, and demonstrate its effectiveness in circuit simulation. The equivalent circuit for the Wiegand sensor is expressed by the intrinsic pulse voltage, internal resistance, and inductance of the pick-up coil. This voltage as a power source and circuit parameters are determined by MATLAB/Simulink simulation. The output voltage calculated using the equivalent circuit of the Wiegand sensor agrees with the experimentally measured results.

scholarly journals A flexible In-Plane p-n heterojunction nano-generator with phonon-enhanced Photothermoelectric Effect to harvest solar energy

2021 ◽  
Author(s):  
HeWu Zhou ◽  
Panmeng Meng ◽  
Yang LIn ◽  
Zihao Chen ◽  
Yanjie Zhao ◽  
...  
Keyword(s):  
Solar Energy ◽  
Power Source ◽  
Infrared Light ◽  
Induced Voltage ◽  
Voltage Output

Photothermoelectric (PTE) devices show a promising prospect for realizing photo-induced voltage output using infrared light, which can meet the crucial requirement for photo detector and power source. However, limited utilization...

scholarly journals Portable Photovoltaic-Self-Powered Flexible Electrochromic Windows for Adaptive Envelopes

2021 ◽  
Vol 2 (2) ◽  
pp. 174-185
Author(s):  
Antonio Cánovas-Saura ◽  
Ramón Ruiz ◽  
Rodolfo López-Vicente ◽  
José Abad ◽  
Antonio Urbina ◽  
...  
Keyword(s):  
Power Supply ◽  
Organic Solar Cells ◽  
Market Integration ◽  
Control Method ◽  
Light Transmission ◽  
Transmission Function ◽  
Electronic Control ◽  
Electrochromic Devices ◽  
Large Area ◽  
Self Powered

Variable transmission applications for light control or energy saving based on electrochromic materials have been successfully applied in the past in the building, sports, or automotive fields, although lower costs and ease of fabrication, installation, and maintenance are still needed for deeper market integration. In this study, all-printed large area (900 cm2 active area) flexible electrochromic devices were fabricated, and an autoregulating self-power supply was implemented through the use of organic solar cells. A new perspective was applied for automotive light transmission function, where portability and mechanical flexibility added new features for successful market implementation. Special emphasis was placed in applying solution-based scalable deposition techniques and commercially available materials (PEDOT-PSS as an electrochromic material; vanadium oxide, V2O5, as a transparent ion-storage counter electrode; and organic solar modules as the power supply). A straightforward electronic control method was designed and successfully implemented allowing for easy user control. We describe a step-by-step route following the design, materials optimization, electronic control simulation, in-solution fabrication, and scaling-up of fully functional self-powered portable electrochromic devices.

scholarly journals Rancang Bangun Buck-Boost Converter Pada Sistem Charging Baterai dengan Sumber Solar Cell Menggunakan Kontrol PI pada Uninterruptible Power Supply (UPS) Offline untuk Aplikasi Beban Rumah Tangga

PoliGrid ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 49
Author(s):  
Yeheskiel Rante Payung ◽  
Era Purwanto ◽  
Farid Dwi Murdianto
Keyword(s):  
Solar Cell ◽  
Power Supply ◽  
Boost Converter ◽  
Uninterruptible Power Supply ◽  
Uninterruptible Power

Kasus pemadaman listrik bergilir sudah menjadi masalah umum di Indonesia. Kebutuhan listrik semakin memuncak karena penggunaan energi listrik dapat menghidupkan berbagai peralatan rumah tangga dan industri. Saat ini, banyak terjadi pemadaman listrik secara bergilir karena kapasitas beban sudah melebihi kapasitas yang sudah ditentukan. Akibatnya, pasokan energi listrik menjadi tidak stabil, sehinga berdampak pada peralatan listrik rumah tangga.Akibat pemadaman listrik yang tidak menentu maka digunakan pemasok cadanan yang dapat bekerja ketika sumber daya utama tidak aktif atau disebut UPS (Uninterruptible Power Supply). UPS dapat menjadi energi cadangan listrik sementara pada saat terjadi pemadaman listrik sehina mengurangi dampak  pada peralatan listrik rumah tanggaPada perancangan sistem ini, digunakan sumber solar cell 300WP(watt peak) yang digunakan untuk proses pengisian baterai 48V DC 45Ah dengan menggunakan buck-boost converter. Ketika sumber utama PLN tidak aktif ATS(Automatic Transfer Switch) secara otomatis akan memindahkan catu daya dari baterai. Dari sumber baterai digunakan inverter satu fasa untuk mencatu beban rumah tangga sebesar 50W 220V AC.

A new insight into ZIF-67 based triboelectric nanogenerator for self-powered robot object recognition

2021 ◽  
Author(s):  
Sugato Hajra ◽  
Manisha Sahu ◽  
Aneeta Manjari Padhan ◽  
Jaykishon Swain ◽  
Basanta Kumar Panigrahi ◽  
...  
Keyword(s):  
Object Recognition ◽  
Mechanical Energy ◽  
Power Source ◽  
Triboelectric Nanogenerator ◽  
Electrostatic Induction ◽  
Self Powered ◽  
Insight Into

Harvesting mechanical energy from surroundings can be a promising power source for micro/nano-devices. The triboelectric nanogenerator (TENG) works in the principle of triboelectrification and electrostatic induction. So far, the metals...

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