Opto-mechanical modeling and experimental implementation of an FBG-based piezoelectric bimorph actuator for high voltage sensing applications

This paper proposes a highly simplified optical voltage sensor by using a piezoelectric bimorph and a Fiber Bragg Grating (FBG) that can be used for high voltage applications with a relatively good accuracy and stability. In this work the theoretical framework for the whole opto-mechanical operation of the optical sensor is detailed and compared to experimental results. In the analysis, a correction term to the electric field is derived to account for the linear strain distribution across the piezoelectric layer improving the designing equations and giving more criteria for future developments. Finally, some experimental results from a laboratory scale optical-based high voltage sensing setup are discussed, and shown to be in excellent agreement with theoretical expected behavior for different voltage magnitudes.

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Lossless Compression for Text and Images

International Journal of High Speed Electronics and Systems ◽

10.1142/s0129156497000068 ◽

1997 ◽

Vol 08 (01) ◽

pp. 179-231 ◽

Cited By ~ 6

Author(s):

Alistair Moffat ◽

Timothy C. Bell ◽

Ian H. Witten

Keyword(s):

Remote Sensing ◽

Lossless Compression ◽

Lossy Compression ◽

International Standards ◽

Experimental Results ◽

Extensive Discussion ◽

Standard Methods ◽

Sensing Applications ◽

Other Information ◽

Remote Sensing Applications

Most data that is inherently discrete needs to be compressed in such a way that it can be recovered exactly, without any loss. Examples include text of all kinds, experimental results, and statistical databases. Other forms of data may need to be stored exactly, such as images—particularly bilevel ones, or ones arising in medical and remote-sensing applications, or ones that may be required to be certified true for legal reasons. Moreover, during the process of lossy compression, many occasions for lossless compression of coefficients or other information arise. This paper surveys techniques for lossless compression. The process of compression can be broken down into modeling and coding. We provide an extensive discussion of coding techniques, and then introduce methods of modeling that are appropriate for text and images. Standard methods used in popular utilities (in the case of text) and international standards (in the case of images) are described.

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Experimental Implementation of Negative Impedance Shunts on Periodic Structures

Volume 1: Active Materials, Mechanics and Behavior; Modeling, Simulation and Control ◽

10.1115/smasis2009-1369 ◽

2009 ◽

Cited By ~ 1

Author(s):

Benjamin Beck ◽

Kenneth A. Cunefare ◽

Massimo Ruzzene ◽

Manuel Collet

Keyword(s):

Periodic Structures ◽

Experimental Results ◽

Periodic Array ◽

Negative Capacitance ◽

Experimental Implementation ◽

Theoretical Predictions ◽

Shunt Damping

Shunt damping of structures has been heavily researched, both passively and actively. Negative capacitance shunts actively control vibration on a structure and have been shown to obtain significant broadband suppression. The use of smaller piezoelectric patches, implemented in a periodic array, can alter the behavior of the control. Assorted shunt arrangements as well as circuit configurations will be investigated. Experimental results will be compared to theoretical predictions of shunt performance.

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Potentiometric Taste Sensing Using Reduced Graphene Oxide Screen Printed Electrodes

Sensor Letters ◽

10.1166/sl.2020.4302 ◽

2020 ◽

Vol 18 (12) ◽

pp. 881-888

Author(s):

Anil B. Patil ◽

Umesh. J. Tupe ◽

Vikas V. Deshmane ◽

Arun V. Patil

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Principal Component ◽

Experimental Results ◽

Statistical Tool ◽

Sensing Applications ◽

Screen Printed Electrodes ◽

Reduced Graphene ◽

Pharmaceutical Industries ◽

Screen Printed

This paper reports the development of simple and economical reduced graphene oxide (rGO) based screen-printed electrodes (SPE) for five basic taste sensing applications. Twenty different test solutions for the five tastes of salty, sour, sweet, umami, and bitter at 1 ppm, 10 ppm, 100 ppm, 1000 ppm concentration levels were tested with the fabricated SPEs. From experimental results, electrical signals generated between the electrode and test solution interface were measured using the potentiometric method. Satisfactory potentiometric responses of SPEs to different ppm concentrations for each sample were used to analyze the sample data. Histogram using the statistical tool was used to analyze the changes in the conductivity response. A multivariate Principal Component Analysis (PCA) statistical tool correlated using loading plots between variables and factors of all the five basic tastes. The plot showed the interrelation between variables and test samples. The obtained experimental results from these rGO based SPEs make them suitable for their use in taste sensing applications such as for any taste disorder disability, food-producing industry, pharmaceutical industries, etc.

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Modified Cascaded Z-Source High Step-Up Boost Converter

Electronics ◽

10.3390/electronics9111932 ◽

2020 ◽

Vol 9 (11) ◽

pp. 1932

Author(s):

Navid Salehi ◽

Herminio Martínez-García ◽

Guillermo Velasco-Quesada

Keyword(s):

High Voltage ◽

Boost Converter ◽

Experimental Results ◽

Input Current ◽

Voltage Gain ◽

Low Input ◽

High Voltage Gain ◽

Voltage Stress ◽

Photovoltaic Applications ◽

Current Ripple

To improve the voltage gain of step-up converters, the cascaded technique is considered as a possible solution in this paper. By considering the concept of cascading two Z-source networks in a conventional boost converter, the proposed topology takes the advantages of both impedance source and cascaded converters. By applying some modifications, the proposed converter provides high voltage gain while the voltage stress of the switch and diodes is still low. Moreover, the low input current ripple of the converter makes it absolutely appropriate for photovoltaic applications in expanding the lifetime of PV panels. After analyzing the operation principles of the proposed converter, we present the simulation and experimental results of a 100 W prototype to verify the proposed converter performance.

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Determination of Ambipolar Lifetime and Epilayer Thickness of 5kV SiC Bipolar Devices by Transient Switching Studies

Materials Science Forum ◽

10.4028/www.scientific.net/msf.600-603.1031 ◽

2008 ◽

Vol 600-603 ◽

pp. 1031-1034

Author(s):

Tarek Ben Salah ◽

Samien Risaletto ◽

Christophe Raynaud ◽

Kamel Besbes ◽

Dominique Bergogne ◽

...

Keyword(s):

High Voltage ◽

Doping Level ◽

Buck Converter ◽

Experimental Results ◽

Resistive Load ◽

Bipolar Devices ◽

Voltage Transient ◽

Set Up ◽

Switching Mode

A novel experimental set-up is developed and validated to characterize high voltage diodes in transient switching mode. Parameters extracted from DMTVCA and OCVD techniques, like ambipolar lifetime, epilayer thickness and doping level, diode area, are validated in a buck converter with resistive load. The experimental set-up allows to measure the current and voltage transient characteristics without noise and influence of high parasitic wiring. Experimental results are compared with device simulations and a good correlation is found.

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Bipolar SiC-Diodes – Challenges Arising from Physical and Technological Aspects

Materials Science Forum ◽

10.4028/www.scientific.net/msf.556-557.889 ◽

2007 ◽

Vol 556-557 ◽

pp. 889-894 ◽

Cited By ~ 6

Author(s):

Wolfgang Bartsch ◽

Heinz Mitlehner ◽

S. Gediga

Keyword(s):

High Voltage ◽

Basal Plane ◽

Current Level ◽

Experimental Results ◽

Junction Temperature ◽

Base Thickness ◽

Switching Behaviour ◽

A Current

In this contribution we summarize measurements on bipolar high voltage SiC-diodes which were fabricated on 4H-SiC wafers preferentially cut 4° off the [0001] basal plane, whereas the p-emitter thickness was varied in predetermined ratios to the n-base thickness. The switching behaviour of optimized 6.5 kV-Diodes at a current level of 25 A is shown at DC link voltages up to 4 kV and at a junction temperature of 125°C. Experimental results are discussed in terms of snappiness.

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Series connected soft switched IGBTs for high power, high voltage drives applications: experimental results

PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972 ◽

10.1109/pesc.1997.616602 ◽

2002 ◽

Cited By ~ 8

Author(s):

G. Botto ◽

M. Carpita ◽

E. Gilardi ◽

S. Tenconi

Keyword(s):

High Voltage ◽

High Power ◽

Experimental Results

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Designing of a High Voltage Power Supply for Electrospinning Apparatus Using a High Voltage Flyback Transformer (HVFBT)

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.771.145 ◽

2015 ◽

Vol 771 ◽

pp. 145-148 ◽

Cited By ~ 2

Author(s):

Muhammad Miftahul Munir ◽

Dian Ahmad Hapidin ◽

Khairurrijal

Keyword(s):

High Voltage ◽

Duty Cycle ◽

Power Supply ◽

Pulse Width ◽

Output Voltage ◽

Pulse Width Modulation ◽

Experimental Results ◽

High Voltage Power Supply ◽

Electrospinning Technique ◽

The World

Research on nanofiber materials is actively done around the world today. Various types of nanofibers have been synthesized using an electrospinning technique. The most important component when synthesizing nanofibers using the electrospinning technique is a DC high voltage power supply. Some requirements must be fulfilled by the high voltage power supply, i.e., it must be adjustable and its output voltage reaches tens of kilovolts. This paper discusses the design and development of a high voltage power supply using a diode-split transformer (DST)-type high voltage flyback transformer (HVFBT). The DST HVFBT was chosen because of its simplicity, compactness, inexpensiveness, and easiness of finding it. A pulse-width modulation (PWM) circuit with controlling frequency and duty cycle was fed to the DST HVFBT. The high voltage power supply was characterized by the frequency and duty cycle dependences of its output voltage. Experimental results showed that the frequency and duty cycle affect the output voltage. The output voltage could be set from 1 to 18 kV by changing the duty cycle. Therefore, the nanofibers could be synthesized by employing the developed high voltage power supply.

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