logo EDITE Mohammed BEDIER
Mohammed BEDIER
État académique
Thèse en cours...
Sujet: Circuit de conditionnement intelligent et intégré pour récupération d'énergie vibratoire
Direction de thèse:
Ellipse bleue: doctorant, ellipse jaune: docteur, rectangle vert: permanent, rectangle jaune: HDR. Trait vert: encadrant de thèse, trait bleu: directeur de thèse, pointillé: jury d'évaluation à mi-parcours ou jury de thèse.
Productions scientifiques
Low Power Load Interface For Vibrational Energy MEMS harvesters
International audience
Electrostatic vibrational energy harvesting is an appealing source power for self powered wireless sensors. With many pervious successful implementation of energy harvesters, a power efficient load interface is needed. This article describes multiple energy-shot load interface for vibrational energy MEMS harvester with a low power decision mechanism.
Journées Nationales sur la Récupération et le Stockage d'Energie (JNRSE’2016) http://hal.upmc.fr/hal-01371851 Journées Nationales sur la Récupération et le Stockage d'Energie (JNRSE’2016), May 2016, Bordeaux, FranceARRAY(0x7f3e7d737018) 2016-05-09
A 100nW Power Overhead Load Interface for Electrostatic Vibrational Energy Harvester with a High Biasing Voltage
International audience
Electrostatic vibrational energy harvester (e-VEH) appeals to the ever expanding applications of self powered sensors. The capacitive transduces and their conditioning circuits are extensively studied in literature, yet usually lacking a load interface that manages that energy extraction from the harvester and efficiency delivers it to a load. A load interface, as well as its controller, designed for Bennet's Doubler conditioning circuit is presented in this work. The energy extraction from the harvester is achieved through a multiple energy-shot transfer process to minimize the resistive energy loss. The load interface controller simulation shows a low power overhead of less than 100nW making it adequate for practical implementation.
The 30th EUROSENSORS conference (2016) https://hal.archives-ouvertes.fr/hal-01521807 The 30th EUROSENSORS conference (2016), Sep 2016, Budapest, Hungary. <http://www.sciencedirect.com/science/article/pii/S1877705816338140>. <10.1016/j.proeng.2016.11.492> http://www.sciencedirect.com/science/article/pii/S1877705816338140ARRAY(0x7f3e7b4cd5d0) 2016-09-04
Multiple energy-shot load interface for electrostatic vibrational energy harvesters
International audience
Vibrational energy harvesting is an appealing power source for self-powered sensors, especially in recent trend of internet-of-things (IoT). Pervious studies had focused on extracting the vibrational energy with very few implementing an efficient load interface. This article describes an energy extraction mechanism for electrostatic MEMS vibration energy harvesting systems. An autonomous load interface extracting energy in multiple energy-shot transfers is proposed. Moreover, a CMOS implementation of the load interface is presented.
New Circuits and Systems Conference (NEWCAS), 2016 14th IEEE International https://hal.archives-ouvertes.fr/hal-01521749 New Circuits and Systems Conference (NEWCAS), 2016 14th IEEE International, Jun 2016, Vancouver, BC, Canada. <http://ieeexplore.ieee.org/document/7604771/>. <10.1109/NEWCAS.2016.7604771> http://ieeexplore.ieee.org/document/7604771/ARRAY(0x7f3e7b569ef8) 2016-06-26
A Smart Load Interface and Voltage Regulator for Electrostatic Vibration Energy Harvester
International audience
This paper presents a new implementation in ams 0.35μm HV technology of a complete energy management system for an electrostatic vibrational energy harvester (e-VEH). It is based on the Bennet's doubler architecture and includes a load voltage regulator (LVR) and a smart Load Interface (LI) that are self-controlled with internal voltages for maximum power point tracking (MMPT). The CMOS implementation makes use of an energy harvester that is capable of producing up to 1.8μW at harmonic excitation, given its internal voltage is kept within its optimum. An intermediate LI stage and its controller makes use of a high side switch with zero static power level shifter, and a low power hysteresis comparator. A full circuit level simulation with a VHDL-AMS model of the e-VEH presented was successfully achieved, indicating that the proposed load interface controller consumes less than 100nW average power. Moreover, a LVR regulates the buffer and discharge the harvested energy into a generic resistive load maintaining the voltage within a nominal value of 2 Volts.
The 16th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications https://hal.archives-ouvertes.fr/hal-01521733 The 16th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, Dec 2016, Paris, France. <https://www.powermems2016.org, http://iopscience.iop.org/article/10.1088/1742-6596/773/1/012105/meta>. <10.1088/1742-6596/773/1/012105> https://www.powermems2016.org, http://iopscience.iop.org/article/10.1088/1742-6596/773/1/012105/metaARRAY(0x7f3e7baad778) 2016-12-06
Analysis and Comparison of Charge-Pump Conditioning Circuits for Capacitive Electromechanical Energy Conversion
International audience
This work presents a rigorous electrical analysis of charge-pump conditioning circuits for capacitive energy converters (CEG) with built-in bias voltage. The subsequent implications on the selection of the optimal conditioning circuit are also presented. In particular, the determining role of the application context and constraints on the optimal conditioning circuit choice is discussed. This context is defined by the transducer's capacitance variation amplitude, by the value of the built-in bias of the transducer, and by limitations on the operating voltages across the circuit elements and the transducer.
Circuits and Systems (ISCAS), 2017 IEEE International Symposium on IEEE 50th International Symposium on Circuits and Systems (ISCAS) https://hal.archives-ouvertes.fr/hal-01597736 IEEE 50th International Symposium on Circuits and Systems (ISCAS), May 2017, Baltimore, United States. IEEE, Circuits and Systems (ISCAS), 2017 IEEE International Symposium on, pp.1-4, 〈10.1109/ISCAS.2017.8050650〉ARRAY(0x7f3e7d739aa8) 2017-05-28
Thèse: Circuits d'interface sur silicium pour une gestion optimale de la puissance dans les récupérateurs d'énergie vibratoire à transduction capacitive.
Rapporteurs: Robert SOBOT    Mickaël LALLART