Essays about: "harmonic content"

Showing result 1 - 5 of 16 essays containing the words harmonic content.

1. 1. Mapping of IPM machine efficiency and Noise Vibration Harshness : An investigation into trade-offs with respect to efficiency and Noise Vibration Harshness

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Bix Eriksson; Erik Rudqvist; [2023]
   Keywords : ;

   Abstract : Due to the recent shift towards electrification, electric machines has become a prominent option to be used in vehicle applications. Much effort is spent in the development process of these machines to make optimizations in order to improve the performance aspects of the machine. READ MORE

3. 2. Utilisation of hardwood in cross-laminated timber - A numerical study on vibrations in floors

   University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

   Author : Johannes Jonasson; Olle Karlsson; [2022]
   Keywords : hardwood; birch; beech; clt; cross-laminated timber; vibrations; floors; footfall; accelerations; Technology and Engineering;

   Abstract : Cross-laminated timber (CLT) is an engineered wood product consisting of several layers of laminations bonded together with adhesives. In contrast to heavier construction materials, timber and other lightweight building materials are more prone to serviceability issues due to vibrations. READ MORE

4. 3. Conductive interferences from multiple EC-motor installation : To measure and mitigate harmonics

   University essay from Uppsala universitet/Signaler och system

   Author : Victor Aitman; [2022]
   Keywords : harmonics; interharmonics; harmonic-mitigation; electromagnetic compability; EMC; övertoner; EC-motorer; störningar; övertonsreducering; elektromagnetiskt kompabilitet; EMC;

   Abstract : Products produced by a Swedish company are requested to be investigated regarding their harmonic and inter-harmonic currents injected into the public supply system to comply with the Swedish standard SS-EN IEC 61000-3-2, Electromagnetic compatibility (EMC).    On behalf of Systemair Sweden AB, this bachelor thesis aims firstly to investigate if their product, PAFEC 4225 WH (Air Curtain), complies with standard SS-EN IEC 61000-3-2, and if not, what measures should be taken; and secondly to develop a low-cost instrument for the measurement of harmonics and inter-harmonics according to standard IEC 61000-4-7 related to the requirements on equipment used in standard SS-EN IEC 61000-3-2. READ MORE

5. 4. Impact of gradual increase in electric vehicle chargers in low voltage grids

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Viktor Burman Olsson; [2022]
   Keywords : ;

   Abstract : The presence of EV chargers in low voltage distribution grids increases through both public-usefacilities and at-home installations. EV charger grid impact studies are commonly focused onlarger installations such as fast-charging stations and charging pole arrays, or consider one or afew scenarios with respect to at-home EV charger amounts. READ MORE

6. 5. Evaluation of Discrete-Time Wideband Receivers for NB-IoT

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Magnus Wasting; [2021]
   Keywords : Discrete; time; filter; NB-IoT; Charge; Sharing; CMOS; Technology and Engineering;

   Abstract : A receiver that covers several RF bands requires multiple front-end filters which increases the cost in terms of components and/or board/silicon area. Front-end filters assist a receiver to withstand interference at multiples of its down-conversion frequency. READ MORE