Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Adaptive Piezoelectric energy harvesting circuit

This seminars describes an approach to harvesting electrical energy from a mechanically excited piezoelectric element. A vibrating piezoelectric device differs from a typical electrical power source in that it has a capacitive rather than inductive source impedance, and may be driven by mechanical vibrations of varying amplitude.

An analytical expression for the optimal power flow from a rectified piezoelectric device is derived, and an energy harvesting circuit is proposed which can achieve this optimal power flow. The harvesting circuit consists of an ac-dc rectifier with an output capacitor, an electrochemical battery, and a switch-mode dc-dc converter that controls the energy flow into the battery. An adaptive control technique for the dc-dc converter is used to continuously implement the optimal power transfer theory and maximize the power stored by the battery.

Experimental result reveal that the use of the adaptive dc-dc converter increases power transfer by over 400% as compared to when the dc-dc converter is not used...
Piezoelectric materials can be used as a means of transforming ambient vibrations into electrical energy that can be stored and used to power other devices. With the recent surge of micro scale devices, piezoelectric power generation can provide a convenient alternative to traditional power sources used to operate certain types of sensors/actuators, telemetry, and MEMS devices. However, the energy produced by these materials is in many cases far too small to directly power an electrical device. Therefore, much of the research into power harvesting has focused on methods of accumulating the energy until a sufficient amount is present, allowing the intended electronics to be powered. In a recent study the ability to take the energy generated through the vibration of a piezoelectric material was shown to be capable of recharging a discharged nickel metal hydride battery. piezoelectric devices will be investigated and experimentally tested to determine each of their abilities to transform ambient vibration into electrical energy and their capability to recharge a discharged battery. The three types of piezoelectric devices tested are; the commonly used monolithic piezoceramic material lead zirconate titanate (PZT), the bimorph Quick Pack (QP) actuator and Macro Fiber Composite (MFC). The experimental results estimate the efficiency of the three devices tested and identify the feasibility of their use in real world applications. Various different capacity batteries are recharged using each device, to determine the charge time and maximum capacity battery that can be charged..

The increasing desire for completely self-powered electronics has caused the amount of research into power harvesting devices to become progressively larger over the last decade. With the advances being made in wireless technology and low power electronics, sensor are being developed that can be placed almost anywhere. However, because these sensors are wireless, they require their own power supply which in most cases is the conventional electrochemical battery. Once these finite power supplies are extinguished of their power, the sensor must be obtained and the battery replaced. The task of replacing the battery is tedious and can become very expensive when the sensor is placed in a remote location. These issues can be potentially alleviated through the use of power harvesting devices. The goal of a power harvesting device is to capture the normally lost energy surrounding a system and convert it into usable energy for the electrical device to consume. By utilizing these untapped energy sources electronics that do not depend on finite power supplies, such as the battery, can be developed. One source of typically lost energy is the ambient vibrations present around most machines and biological systems. This source of energy is ideal for the use of piezoelectric materials, which have the ability to convert mechanical strain energy into electrical energy and vice versa.
Sir ,
am intrested to know about th e details of this seminars. Plz reply soon.
can u please send d whole copy, it can be very helpful for me..
thanks in advance..
plz send me report of this seminars.... i ve to select 1 b4 monday...its urgent....
read this http://insti page for a deep read

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: delectated circuit, piezoelectric energy harvesting by shoe, piezoelectric sensors, energy harvesting tutorial download, green energy harvesting technology in 3d ic full seminar report, piezoelectric materials, power point presentation for adaptive piezoelectric energy harvesting circuit,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  Adaptive piezoelectric energy harvesting circuit for wireless remote power supply electronics seminars 3 3,206 18-02-2016, 02:18 PM
Last Post: seminar report asees
  Circuit Breaker Maintenance by Mobile Agent Software Technology project topics 16 12,055 23-04-2014, 08:27 PM
Last Post: Guest
  Space Time Adaptive Processing computer science crazy 4 4,298 04-03-2014, 07:03 PM
Last Post: Guest
  renewable energy resources ppt computer science technology 12 24,267 25-05-2013, 11:21 AM
Last Post: computer topic
  Seminar on Save Energy computer girl 2 2,680 03-04-2013, 10:52 AM
Last Post: computer topic
Last Post: seminar details
  Contactless Energy Transfer System computer science crazy 49 26,811 02-01-2013, 11:11 AM
Last Post: Guest
Big Grin HVDC TECHNOLOGY AND SHORT CIRCUIT CONTRIBUTION OF HVDC LIGHT? seminar projects crazy 6 6,268 13-12-2012, 12:58 PM
Last Post: seminar details
  ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG seminar projects crazy 13 10,220 12-12-2012, 11:05 PM
Last Post: Guest
  Digital Testing of High Voltage Circuit Breaker project topics 13 10,601 24-10-2012, 03:28 PM
Last Post: seminar details