Advanced search

Showing result 1 - 5 of 303 essays matching the above criteria.

1. 1. FPGA Based Control of Multiple Electric Machines for Marine Propulsion Systems

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

   Author : Simon Weideskog; [2024]
   Keywords : FPGA; Field Oriented Control; BLDC; SVPWM; SMO; Electric Drives; Electric Machines; Sliding Mode Observer; Marine Propulsion; Multiple Machines; Boat Motor; Fältorienterad styrning; marin framdrivning; elektriska drivsystem; elmaskiner; flertal maskiner; båtmotor;

   Abstract : This master thesis addresses the control of electric propulsion motors in a marine context. The focus lies mainly on the implementation of field oriented control (FOC) in a field programmable gate array (FPGA). The hypothesis is that FPGAs provide performance advantages over microcontroller-based control solutions by enabling parallel processing. READ MORE

3. 2. Hydraulic Modelling of Eurasian Beaver Structural Modifications: Implications for Evaluating their Contributions to Natural Flood Management in Scotland

   University essay from Lunds universitet/Avdelningen för Riskhantering och Samhällssäkerhet

   Author : Maja Christina Pitcairn; [2023]
   Keywords : Beaver reintroduction; Scotland; Flood risk; Natural flood management; Hydraulic modelling.; Technology and Engineering;

   Abstract : The concurrent climate and biodiversity crises in Scotland necessitate the exploration of ecosystem-based adaptation to simultaneously address increased flood risk and the loss of native species. This research investigated the contributions of Eurasian beaver reintroductions to natural flood management in Scotland. READ MORE

4. 3. Sensorless Field-Oriented Control and Position Estimation

   University essay from Lunds universitet/Industriell elektroteknik och automation

   Author : Roberts Bitenieks; Lars Brander; [2023]
   Keywords : Sensorless rotor position estimation; High-frequency injection; Technology and Engineering;

   Abstract : This master's thesis investigates the feasibility of implementing field-oriented control for a BLDC motor without relying on a position sensor from a standstill up to 400 rad/s. To achieve this objective, various approaches were used at standstill and high speeds. READ MORE

5. 4. Civil society organizations in a complex institutional landscape : Investigating institutional logics in Swedish civil society organizations work with social impact measurement

   University essay from Malmö universitet/Institutionen för Urbana Studier (US)

   Author : Hanna Franziska Fischer; [2023]
   Keywords : ;

   Abstract : The role of civil society has been discussed frequently as of the last decades, and with growing influence of new public management and related market-oriented reforms in public sector, civil society organizations have become welfare service providers too. As part of this development, social impact measurement has been a way for financers to prove and private actors to invest in social change. READ MORE

6. 5. Sensorless Hybrid Field-Oriented Control Two-Phase Stepper Motor Driver

   University essay from Linköpings universitet/Reglerteknik

   Author : Emil Lydell; [2023]
   Keywords : Stepper motor; Field-Oriented Control; FOC; Driver; Two-Phase; 2-Phase;

   Abstract : Hybrid stepper motors are small electrical motors with high torque production, compared with other electrical motors of the same size. Hybrid stepper motors are reliable in open-loop systems, in Sinusoidal mode, but with a drawback of high power consumption. READ MORE