A Self-starting AC-to-DC Step-up Converter for Energy Harvesting Applications

Choetchai, Phattharapol; Thanachayanont, A.

doi:10.1016/j.procs.2016.05.036

Cited by 9 publications

(2 citation statements)

References 5 publications

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“…PEIs play a key role in EH systems, in particular for Vibration Energy Harvesting ones. Indeed, the total power amounts recovered in energy harvesting conversion mechanisms are typically low, even below mW, while output voltages can be far below 1 V [19][20][21]. Furthermore, the energy source for the EH (vibrations in this case) is typically quite random in nature, and therefore, the need for a custom PEI is often compulsory [22].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Boost Interface for Magnetostrictive Energy Harvesting

et al. 2023

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Magnetostrictive alloys are very promising for Vibration Energy Harvesting applications to supply power to Wireless Sensor Network (WSN) and Internet of Things (IoT) devices, especially because of their intrinsic robustness. Typically, vibration energy sources are random in nature, usually providing exploitable voltages much lower than the electronic standards 1.6, 3.3 and 5 V. Therefore, a Power Electronic Interface (PEI) is needed to improve the conversion to DC output voltage from AC input over a wide range of frequencies and amplitudes. Very few or no conversion techniques are available for magnetostrictive devices, although several have been presented over the years for other smart materials, such as piezoelectrics. For example, hybrid buck–boost converters for piezoelectrics use one or more external inductors with a high-frequency switching technique. However, because of the intrinsic nature of harvesters based on magnetostrictive materials, such energy conversion techniques are proved to be neither efficient nor applicable. An improved AC–DC boost converter seems very promising for our purpose instead. The key feature is represented by the direct exploitation of the active harvester coil as a storage element of the boost circuit, without using other passive inductors as in other switching methods. Experimental tests of such a converter, driven with a real-time operating Arduino controller to detect the polarity of the input voltage, are presented with the aim to assess the potentiality of the scheme with both sinusoidal and impulse-like inputs. Simulations have been performed with LTspice, and the performance and efficiency have been compared with other energy conversion techniques.

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Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Boost Interface for Magnetostrictive Energy Harvesting

et al. 2023

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“…Ref. [28] develops an AC/DC direct converter, but the efficiency achieved is only 45%. Their solution consists of a direct AC/DC bridgeless boost converter and a diode voltage multiplier.…”

Section: Introductionmentioning

confidence: 99%

Mini Wind Harvester and a Low Power Three-Phase AC/DC Converter to Power IoT Devices: Analysis, Simulation, Test and Design

et al. 2020

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Wind energy harvesting is a widespread mature technology employed to collect energy, but it is also suitable, and not yet fully exploited at small scale, for powering low power electronic systems such as Internet of Things (IoT) systems like structural health monitoring, on-line sensors, predictive maintenance, manufacturing processes and surveillance. The present work introduces a three-phase mini wind energy harvester and an Alternate Current/Direct Current (AC/DC) converter. The research analyzes in depth a wind harvester’s operation principles in order to extract its characteristic parameters. It also proposes an equivalent electromechanical model of the harvester, and its accuracy has been verified with prototype performance results. Moreover, unlike most of the converters which use two steps for AC/DC signal conditioning—a rectifier stage and a DC/DC regulator—this work proposes a single stage converter to increase the system efficiency and, consequently, improve the energy transfer. Moreover, the most suitable AC/DC converter architecture was chosen and optimized for the best performance taking into account: the target power, efficiency, voltage levels, operation frequency, duty cycle and load required to implement the aforementioned converter.

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Life cycle cost and sensitivity analysis of a hydrogen system using low-price electricity in China

Chen

Liu³

et al. 2017

International Journal of Hydrogen Energy

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A Self-starting AC-to-DC Step-up Converter for Energy Harvesting Applications

Cited by 9 publications

References 5 publications

Design and Optimization of a Boost Interface for Magnetostrictive Energy Harvesting

Design and Optimization of a Boost Interface for Magnetostrictive Energy Harvesting

Mini Wind Harvester and a Low Power Three-Phase AC/DC Converter to Power IoT Devices: Analysis, Simulation, Test and Design

Life cycle cost and sensitivity analysis of a hydrogen system using low-price electricity in China

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