Essays about: "rotor current"

Showing result 21 - 25 of 55 essays containing the words rotor current.

  1. 21. Utilization of a tailormade condition monitoring device for third party motors

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

    Author : Pontus Grahn; [2018]
    Keywords : Condition monitoring; cross section temperature; digital twin; geometry estimation; induction motors; lumped thermal modeling; preliminary electromagnetic sizing; Buntad termisk modelering; digital tvilling; geometri estimering; induktionsmotorer; preliminär elektromagnetisk geometribestämning; tvärsnittstemperatur; underhållsmätning;

    Abstract : Our society moves towards digitalization and the industry is not an exception. Siemenshas developed a wireless condition monitoring device called Simotics Connect in order tohelp them to move forward in the world of digitalization. The Simotics Connect has threeinbuilt sensors. READ MORE

  3. 22. Construction, testing and verification of a brushless excitation system with wireless control of the field current in a synchronous generator.

    University essay from Uppsala universitet/Elektricitetslära

    Author : Rickard Larsson; Kenny Andersson; [2018]
    Keywords : Brushless excitation; synchronous generator; bluetooth; torque ripple; Borstlös matning; synkrongenerator; blåtand; momentpulsationer;

    Abstract : Synchronous generators have been used in hydropower from more than a century where, traditionally, the field current is transferred to the rotor using slip rings and carbon brushes. There are some major disadvantages following the use static excitation; regular and expensive maintenance, as well as a source of carbon dust which, due to buildup, may cause short circuits. READ MORE

  4. 23. A case study on improving energy efficiency of a Granulator in the polythene recycling machine

    University essay from KTH/Energiteknik

    Author : Raveendra Sampath Kumara Sarukkali Kankanamge; [2018]
    Keywords : ;

    Abstract : The thesis focuses on the improvement/enhancement of energy efficiency of the machine; called Granu-lator of the recycling process of polythene. In the recycling process, it is observed that energy is wasted unnecessarily, and thus energy efficiency must be improved. The reason is that the granulator has been operating with an old rotor. READ MORE

  5. 24. Optimization of Electromechanical Studies for the Connection of Hydro Generation

    University essay from KTH/Elkraftteknik

    Author : Mathieu GROULT; [2018]
    Keywords : Active power response time; EUROSTAG; Hydraulic power plant; Grid codes; MATLAB; Nuclear power plant; Rotor angle stability; aktiv effekt tidrespons; EUROSTAG; hydraulisk kraftverk; nätkoder; MATLAB; kärnkraftverk; rotorn vinkelstabilitet;

    Abstract : The current model for electricity generation is based on power plants connected to the transmission network. This provides electricity to the distribution network and after that to the consumers. READ MORE

  6. 25. AERODYNAMIC FORCING & DAMPING COMPUTATIONS IN A TRANSONIC AXIAL TURBINE OF A TURBOCHANRGER USING TIME & FREQUENCY DOMAIN FLOW TRANSFORMATION TECHNIQUES

    University essay from KTH/Energiteknik

    Author : Aravin Dass Naidu; [2016]
    Keywords : ;

    Abstract : The current report discusses efficient and accurate numerical techniques to evaluate aerodynamic disturbance and damping forces based on investigations carried out at ABB Turbo System AG. The test turbomachine comprises a single-stage transonic axial turbine analysed with the fluid dynamic software ANSYS CFX 17.0 and post-processing tool Matlab. READ MORE