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Visar resultat 1 - 5 av 44 uppsatser som matchar ovanstående sökkriterier.

1. 1. Harmonisk strömsimulering i inverterbaserade värmepumpar

   Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

   Författare :Alexander Magnusson; [2023]
   Nyckelord :Current harmonics; inverter-driven compressor; black box simulation;

   Sammanfattning : An electrical distribution network supplies power to many households at a time. Each house has various types of electrical appliances which consume different levels of power depending on its function and the load it supplies. An ideal case would be when no appliances cause power disturbances, however, in reality, many electrical appliances (e.g. LÄS MER

3. 2. Towards More Efficient Wireless Power Transfer for 6G

   Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

   Författare :Ali Al-Ameri; Jaeyoung Park; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : As time is moving forward, the world is becoming more dependent on Internet of Things (IoT) devices. The vision for the future involves IoT devices participating in various aspects of our daily lives, including sensing, controlling, and communicating. LÄS MER

4. 3. Design of radio frequency energy harvesting system : for use in implantable sensors

   Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System; Linköpings universitet/Tekniska fakulteten

   Författare :Amir Ebrahimi; David Kihlberg; [2022]
   Nyckelord :RF energy harvesting; RF rectifier; efficiency; voltage sensor; voltage doubler;

   Sammanfattning : Implantable biomedical wireless sensors provide monitoring of vital health signs such as oxygen, temperature and intraocular pressure and may help to analyse and detect diseases in humans and animals. However, one of the design challenges of implantable devices is providing a safe and reliable energy source. LÄS MER

5. 4. Antenna as a sensor for sensing available LTE networks

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Barath Kumar Sathish Kumar; [2022]
   Nyckelord :Radio Frequency energy harvesting; Antenna as a sensor; Long-Term Evolution; Rectifier; Printed Circuit Board; Altium Designer; Matching network; Voltage multiplier; Schottky diodes; Multiband LTE antenna; Ambient energy harvesting; Low power Internet of Things; Wireless power transfer; Radiofrekvensenergiskörd; Antenn som sensor; LTE; Likriktare; Printed Circuit Board; Altium Designer; Matchande nätverk; Spänningsmultiplikator; Schottky-dioder; Multiband LTE-antenn; Omgivande energiskörd; Lågeffekt Internet of Things; Trådlös kraftöverföring;

   Sammanfattning : This thesis primarily deals with the concept of designing an antenna based device to harvest energy from Radio Frequency (RF) and using the harvested energy to sense the available Long Term Evolution (LTE) network in order for the Internet of Things (IoT) devices to connect to the network for the purpose of transmitting and receiving data. Secondarily the importance of this project is targeting how to conserve battery power in an IoT device and extend it’s lifetime. LÄS MER

7. 5. Commissioning and Testing of a Novel Buck-Boost Phase-Modular Three-Phase AC/DC Converter with Low Component Number

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Saransh Chhawchharia; [2022]
   Nyckelord :;

   Sammanfattning : In this thesis, a 1kW hardware prototype of a three-phase inverting buck-boost converter, termed as 6 Switch Buck-Boost Y-Inverter (6YI) is commissioned and tested. The 6YI is designed to be used as a motor drive for renewable energy applications such as fuel cell, solar etc powered motor drives with wide input voltage capability. LÄS MER