Essays about: "rectifier"

Showing result 6 - 10 of 35 essays containing the word rectifier.

1. 6. Wireless Power Transfer in Cavity Resonator

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Axel Djurberg; Fredrik Forsberg; Anton Lind; Ludvig Snihs; [2021]
   Keywords : cavity; resonator; radio frequency; wireless power transfer;

   Abstract : The purpose of this paper is to achieve wireless power transfer inside a resonating cavity, and thereby apply this to charge batteries. The idea is to convert radio frequency waves into direct current, which can charge the batteries. This was done by creating an LC-antenna, which in turn was connected to a rectifier. READ MORE

3. 7. 83% Efficient ASIC Wireless Power Transfer from NFC for Implantable Sensors

   University essay from Linköpings universitet/Elektroniska Kretsar och System

   Author : Samir Sabah; [2020]
   Keywords : NFC; Wireless power transfer; Rectifier; Electrical stimulation; Nerve regeneration; Bioelectronics.;

   Abstract : In the past decades, there has been a noticeable growth in the deployment of wireless sensor networks. These sensors/stimulators are typically powered by a battery which has limited life span. Power harvesting is one of the solutions to this problem. READ MORE

4. 8. Analysis Of A Wave Power System With Passive And Active Rectification

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Ferdus Wahid; [2020]
   Keywords : WEC; Optimal damping coefficient; Power smoothing; Passive rectifier; Active rectifier; Buck converter; Bi-directional DC-DC converter; Flywheel; Battery; Bi-directional voltage source converter; Voltage source inverter;

   Abstract : Wave energy converter (WEC) harnesses energy from the ocean to produce electrical power. The electrical power produced by the WEC is fluctuating and is not maximized as well, due to the varying ocean conditions. As a consequence, without any intermediate power conversion stage, the output power from the WEC can not be fed into the grid. READ MORE

5. 9. Isolated Single-Stage Interleave Resonant PFC Rectifier with Active and Novel Passive Output Ripple Cancellation Circuit

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Abidemi Oluremilekun Eleyele; [2020]
   Keywords : single-stage AC DC converter; bridgeless power factor correction PFC rectifier; active passive ripple cancellation; zero current switching ZCS ; zero voltage switching ZVS ; Electric vehicle EV charger; LLC;

   Abstract : With the increasing demand for fast, cheaper, and efficient power converters come the need for a single-stage power factor correction (PFC) converter. Various single-stage PFC converter proposed in the literature has the drawback of high DC bus voltage at the input side and together with the shift to wide bandgap switches like GaN drives the converter cost higher. READ MORE

6. 10. Energy harvesting from ambient WiFi energy : A method of harvesting and measuring ambient WiFi energy

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Alpha Fofana; Carl Mossberg; [2019]
   Keywords : Energy harvesting; Rectenna; Impedance matching; Embedded system; IoT; WiFi; Sustainable Energy; Utvinna energi; Impedansmatchning; Inbyggda system; IoT; WiFi; Hållbar utveckling;

   Abstract : The aim of this thesis was to investigate the question of how to harvest RF energy and if we can harvest enough RF energy for it to be useful in an application. It is aimed towards sensor node applications, commonly used in a typical office environment. The WiFi band was chosen since it is omnipresent in the same environment. READ MORE