Yiannos Manoli's Books

CMOS Circuits for Piezoelectric Energy Harvesters

Efficient Power Extraction, Interface Modeling and Loss Analysis

By: Thorsten Hehn,Yiannos Manoli

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CMOS Circuits for Piezoelectric Energy Harvesters

Efficient Power Extraction, Interface Modeling and Loss Analysis

By: Thorsten Hehn,Yiannos Manoli

This book deals with the challenge of exploiting ambient vibrational energy which can be used to power small and low-power electronic devices, e.g. wireless sensor nodes. Generally, particularly for low voltage amplitudes, low-loss rectification is required to achieve high conversion efficiency. In the special case of piezoelectric energy harvesting, pulsed charge extraction has the potential to extract more power compared to a single rectifier. For this purpose, a fully autonomous CMOS integrated interface circuit for piezoelectric generators which fulfills these requirements is presented. Due to these key properties enabling universal usage, other CMOS designers working in the field of energy harvesting will be encouraged to use some of the shown structures for their own implementations. The book is unique in the sense that it highlights the design process from scratch to the final chip. Hence, it gives the designer a comprehensive guide of how to (i) setup an appropriate harvester model to get realistic simulation results, (ii) design the integrated circuits for low power operation, (iii) setup a laboratory measurement environment in order to extensively characterize the chip in combination with the real harvester and finally, (iv) interpret the simulation/measurement results in order to improve the chip performance. Since the dimensions of all devices (transistors, resistors etc.) are given, readers and other designers can easily re-use the presented circuit concepts.

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Page Count

217

Publisher

Springer

Published Date

ISBN 10

9401792887

ISBN 13

9789401792882

CMOS Circuits for Electromagnetic Vibration Transducers

Interfaces for Ultra-Low Voltage Energy Harvesting

By: Dominic Maurath,Yiannos Manoli

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CMOS Circuits for Electromagnetic Vibration Transducers

Interfaces for Ultra-Low Voltage Energy Harvesting

By: Dominic Maurath,Yiannos Manoli

Chip-integrated power management solutions are a must for ultra-low power systems. This enables not only the optimization of innovative sensor applications. It is also essential for integration and miniaturization of energy harvesting supply strategies of portable and autonomous monitoring systems. The book particularly addresses interfaces for energy harvesting, which are the key element to connect micro transducers to energy storage elements. Main features of the book are: - A comprehensive technology and application review, basics on transducer mechanics, fundamental circuit and control design, prototyping and testing, up to sensor system supply and applications. - Novel interfacing concepts - including active rectifiers, MPPT methods for efficient tracking of DC as well as AC sources, and a fully-integrated charge pump for efficient maximum AC power tracking at sub-100μW ultra-low power levels. The chips achieve one of widest presented operational voltage range in standard CMOS technology: 0.44V to over 4.1V. - Two special chapters on analog circuit design – it studies benefits and obstacles on implemented chip prototypes with three goals: ultra- low power, wide supply voltage range, and integration with standard technologies. Alternative design approaches are pursued using bulk-input transistor stages in forward-bias operation for amplifiers, modulators, and references. - Comprehensive Appendix – with additional fundamental analysis, design and scaling guidelines, circuit implementation tables and dimensions, schematics, source code listings, bill of material, etc. The discussed prototypes and given design guidelines are tested with real vibration transducer devices. The intended readership is graduate students in advanced courses, academics and lecturers, R&D engineers.

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Page Count

309

Publisher

Springer

Published Date

ISBN 10

9401792720

ISBN 13

9789401792721

Energy Harvesting for Wearable Sensor Systems

Inductive Architectures for the Swing Excitation of the Leg

By: Klevis Ylli,Yiannos Manoli

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Energy Harvesting for Wearable Sensor Systems

Inductive Architectures for the Swing Excitation of the Leg

By: Klevis Ylli,Yiannos Manoli

This book investigates several non-resonant inductive harvester architectures in order to find the magnet coil arrangement that generates the largest power output. The book is useful as a step-by-step guide for readers unfamiliar with this form of energy harvesting, but who want to build their own system models to calculate the magnet motion and, from that, the power generation available for body-worn sensor systems. The detailed description of system model development will greatly facilitate experimental work with the aim of fabricating the design with the highest predicted power output. Based on the simulated optimal geometry, fabricated devices achieve an average power output of up to 43 mW during walking, an amount of power that can supply modern low-power, body-worn systems. Experiments were also carried out in industrial applications with power outputs up to 15 mW. In sum, researchers and engineers will find a step-by-step introduction to inductive harvesting and its modeling aspects for achieving optimal harvester designs in an efficient manner.

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Page Count

167

Publisher

Springer Nature

Published Date

ISBN 10

9813344482

ISBN 13

9789813344488

Electromagnetic Vibration Energy Harvesting Devices

Architectures, Design, Modeling and Optimization

By: Dirk Spreemann,Yiannos Manoli

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Electromagnetic Vibration Energy Harvesting Devices

Architectures, Design, Modeling and Optimization

By: Dirk Spreemann,Yiannos Manoli

Electromagnetic vibration transducers are seen as an effective way of harvesting ambient energy for the supply of sensor monitoring systems. Different electromagnetic coupling architectures have been employed but no comprehensive comparison with respect to their output performance has been carried out up to now. Electromagnetic Vibration Energy Harvesting Devices introduces an optimization approach which is applied to determine optimal dimensions of the components (magnet, coil and back iron). Eight different commonly applied coupling architectures are investigated. The results show that correct dimensions are of great significance for maximizing the efficiency of the energy conversion. A comparison yields the architectures with the best output performance capability which should be preferably employed in applications. A prototype development is used to demonstrate how the optimization calculations can be integrated into the design–flow. Electromagnetic Vibration Energy Harvesting Devices targets the designer of electromagnetic vibration transducers who wishes to have a greater in-depth understanding for maximizing the output performance.

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