Self-Powered Adaptive Switched Architecture Storage

Mahboubi, Firdaous El; Bafleur, Marise; Boitier, Vincent; Álvarez, Arantza; Colomer, Jordi Magnet; Miribel-Català, Pere Ll.; Dilhac, Jean‐Marie

doi:10.1088/1742-6596/773/1/012103

Cited by 6 publications

(11 citation statements)

References 6 publications

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“…The total 8% losses are distributed over two categories: 2% related to the control logic, 6% to switches and ultra-capacitors (self-discharge current). This energy efficiency performance value favorably compares to the architecture with 4-UCs [1] (91%) and to the one described in [3] (88%), which are both much more complex.…”

Section: Comparison Of Experimental Resultsmentioning

confidence: 78%

“…A self-adaptive storage architecture consisting of 4 ultra-capacitors was already proposed to address these constraints [1]. This structure is based on reconfiguring the storage elements from all in-series to all in-parallel and reversely according to the availability of harvested energy and to the load consumption.…”

Section: Energy-harvesting Powered Variable Storage Topologymentioning

confidence: 99%

“…Regarding the first architecture already proposed [1], its principle is to use a matrix of four identical ultra-capacitors (UCs), interconnected by switches.…”

Section: A Presentation Of the First Self-adaptive Switched Architecmentioning

confidence: 99%

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Energy-harvesting powered variable storage topology for battery-free wireless sensors

Mahboubi¹,

Bafleur

Boitier

et al. 2018

2018 7th International Conference on Modern Circuits and Systems Technologies (MOCAST)

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Abstract-This paper presents a novel energy storage architecture aimed at providing the energy autonomy of batteryfree wireless sensors powered by energy harvesting. It is based on a concept of adaptive storage using ultra-capacitors and allows meeting contradictory compromises: fast initial startup (small capacitance value) to be able to supply the load as quickly as possible, storage of a large amount of energy (big capacitance value) to increase the energy autonomy of the load and providing a pre-regulated voltage. Compared to previously published structures, the proposed architecture is much less complex and exhibits 92% energy utilization efficiency.

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Section: Comparison Of Experimental Resultsmentioning

confidence: 78%

Section: Energy-harvesting Powered Variable Storage Topologymentioning

confidence: 99%

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Energy-harvesting powered variable storage topology for battery-free wireless sensors

Mahboubi¹,

Bafleur

Boitier

et al. 2018

2018 7th International Conference on Modern Circuits and Systems Technologies (MOCAST)

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“…The reference architecture already proposed in a previous work [7] uses a matrix of four identical ultra-capacitors (Ci = C for I = 1, 2, 3, 4), interconnected by nine switches. As shown in Figure 2, three Schottky diodes allow a default serial structure at start-up.…”

Section: Reference Self-adaptive Switched Architecture Storage With 4mentioning

confidence: 99%

Energy-Harvesting Powered Variable Storage Topology for Battery-Free Wireless Sensors

et al. 2018

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The energy autonomy of wireless sensors is one of the main roadblocks to their wide deployment. The purpose of this study is to propose simple adaptive storage architecture, which combined with energy harvesting, could replace a battery. The main concept is based on using several ultracapacitors (at least two) that are reconfigured in a series or in parallel according to its state of charge/discharge, either to speed up the startup of the powered system or to provide energy autonomy. The proposed structure is based on two ultra-capacitors, one of small capacitance value and one of big value. Powered by an energy-harvesting source, the devised control circuitry allows cold start up with empty ultra-capacitors, pre-regulated output voltage, and energy usage efficiency close to 94.7%.

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“…This concept was experimentally validated using FPGA for the control logic and external power supply for its powering [2]. The validation of the self-powering of such smart storage building block was experimentally carried out and exhibited an energy efficiency usage of 91% [3]. The next step is to build up a fully integrated smart storage block that could entirely replace a battery.…”

Section: Introductionmentioning

confidence: 99%

A power management system using reconfigurable storage scheme for batteryless wireless sensor nodes

Siskos

Mahboubi²,

Boitier

et al. 2018

2018 7th International Conference on Modern Circuits and Systems Technologies (MOCAST)

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Abstract-The expanding network of wireless sensors nodes for IoT applications requires autonomous and low power systems. Supercapacitors (SCs) and energy harvesters manage to replace batteries, offering power autonomy and lifetime. In this work, it is presented a power management system that uses a reconfigurable SC scheme as storage media that is capable to store sufficient energy, while presenting a rapid initial charging. The system is implemented in CMOS 0.35μm AMS technology and consists of a reconfigurable bank of SCs, which is the power source of the node, a control unit and a LDO providing constant output voltage for the wireless sensor node (WSN).

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Self-Powered Adaptive Switched Architecture Storage

Cited by 6 publications

References 6 publications

Energy-harvesting powered variable storage topology for battery-free wireless sensors

Energy-harvesting powered variable storage topology for battery-free wireless sensors

Energy-Harvesting Powered Variable Storage Topology for Battery-Free Wireless Sensors

A power management system using reconfigurable storage scheme for batteryless wireless sensor nodes

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