Essays about: "Mechanical losses"

Showing result 21 - 25 of 80 essays containing the words Mechanical losses.

  1. 21. Torque Ripple Analysis and Compensation of Servo Drives for Robot Application

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : August Millqvist; [2021]
    Keywords : Technology and Engineering;

    Abstract : Permanent magnet synchronous motors or PMSMs are commonly used in multiple applications, both in industry and commercial use. These motors have many pros when compared to other electrical machines but do present the issue of torque ripple, especially cogging torque. READ MORE

  3. 22. Active Control of High­-Speed Flexible Rotors on Controllable Tilting­-Pad Journal Bearings : Theory and Experiment

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Paul-Henrik Bull; [2021]
    Keywords : ATPJB; Fluid-Film Lubrication; Model based control; Vibration Control;

    Abstract : A common choice of bearing for industrial applications such as turbomachinery and rotating compressors is the Tilting-Pad Journal Bearing (TPJB) due to its excellent stability properties. TPJB's are however limited by the reduction of damping in the fluid film at high velocities. READ MORE

  4. 23. Quantification of Drive Cycles for Evaluating Motor Efficiency

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : David Bergman; [2021]
    Keywords : drive cycle; electrical motor; quantification; resolution;

    Abstract : Due to the goals made by the European Union as well as the country of Sweden regarding the desired decrease of the ongoing greenhouse gas emissions, electrical alternatives have increased enormously in the industry and the automotive areas in recent years. By going from petrol-powered vehicles to electrical vehicles, the transport sector has the potential to produce zero direct emissions. READ MORE

  5. 24. All-Oxide Ceramic Matrix Composites : Thermal Stability during Tribological Interactions with Superalloys

    University essay from Luleå tekniska universitet/Materialvetenskap

    Author : Daniel Vazquez Calnacasco; [2021]
    Keywords : Ceramic Matrix Composites; All-Oxide Ceramic Matrix Composites OCMC ; Oxide-Oxide Ceramic Matrix Composites Ox-Ox CMC Ox Ox CMC ; Continuous-Fiber Ceramic Composites CFCC ; Long Fiber Composites LFC ; Ceramic Fiber-Matrix Composites CFMC ; Fiber Reinforced Ceramics FRC ; Superalloys; Inconel 718; Tribology; Elevated Temperature; Alumina; Aluminosilicate; Materiales Compuestos de Matriz Cerámica; Compuestos de Matriz Cerámica base Óxido; Superaleaciones; Inconel 718; Tribología; Alta Temperatura; Alumina; Aluminosilicatos;

    Abstract : The challenges faced in today’s industry require materials capable of working in chemically aggressive environments at elevated temperature, which has fueled the development of oxidation resistant materials. All-Oxide Ceramic Matrix Composites (OCMC) are a promising material family due to their inherent chemical stability, moderate mechanical properties, and low weight. READ MORE

  6. 25. FEM Simulation Study of Iron Losses for a Linear Generator

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Pramod Hassan Kantharaj; [2021]
    Keywords : ;

    Abstract : Over the past few years, electricity generation from renewable resources has increased. Power generation from the ocean waves is also one among them. The technology consists of many subsystems. Generators are considered the heart of the entire subsystem or technology. READ MORE