CMOS Circuits for Piezoelectric Energy Harvesters: Efficient Power Extraction, Interface Modeling and Loss Analysis by Thorsten HehnCMOS Circuits for Piezoelectric Energy Harvesters: Efficient Power Extraction, Interface Modeling and Loss Analysis by Thorsten Hehn

CMOS Circuits for Piezoelectric Energy Harvesters: Efficient Power Extraction, Interface Modeling…

byThorsten Hehn, Yiannos Manoli

Hardcover | August 14, 2014

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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.

Thorsten Hehn received the Dipl.-Ing. degree in Microsystems Engineering from the University of Freiburg in 2006 and the Dr.-Ing. Degree in Microsystems Engineering from the University of Freiburg in 2014.Dr. Hehn started his research activity in Energy Harvesting in 2006 during his diploma thesis, which was on an energy harvesting bas...
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Title:CMOS Circuits for Piezoelectric Energy Harvesters: Efficient Power Extraction, Interface Modeling…Format:HardcoverDimensions:204 pagesPublished:August 14, 2014Publisher:Springer-Verlag/Sci-Tech/TradeLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:9401792879

ISBN - 13:9789401792875

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Table of Contents

1 Introduction. 1.1 Energy Harvesting Principles. 1.2 Examples of Wireless Sensor Nodes. 1.3 State of the Art in Interface Circuits for Energy Harvesters. 1.4 Goal of this Work and Major Achievements. 1.5 Organization of the Book. References.

2 Piezoelectricity and Energy Harvester Modelling. 2.1 Theoretical Background of the Piezoelectric Effect. 2.2 Piezoelectric Converter Design Configurations. 2.3 Modeling of Kinetic Energy Harvesters. 2.4 Modeling of Piezoelectric Harvesters. References.

3 Analysis of Different Interface Circuits. 3.1 Resistor Load. 3.2 Full-wave Rectifier with Capacitor. 3.3 Synchronous Electric Charge Extraction. 3.4 Comparison Under Coupling Considerations. References.

4 Theory of the Proposed PSCE Circuit. 4.1 Basic Operation Principle. 4.2 Energy Loss Approximation Approach. 4.3 Switch Configurations. 4.4 Switching Techniques. 4.5 Evaluation. 4.6 Realization Aspects. References.

5 Implementation of the PSCE Circuit on Transistor Level. 5.1 Power Switches. 5.2 SECE Selector. 5.3 Oscillation Cancellation. 5.4 Negative Voltage Converter. 5.5 Startup.

6 Performance Analysis of the PSCE Chip. 6.1 Vibration Setup. 6.2 Characterization of Piezoelectric Harvesters. 6.3 Demonstration Platform. 6.4 PSCE Chip Performance. References.

7 Conclusions and Outlook. References.

Appendix A Mathematical Calculations. A.1 Solution of the Linear Differential Equation Systems. A.2 Flux Property. A.3 Trigonometric Relations. A.4 Numerical Calculation.