Search for dissertations about: "constant power speed range"

Showing result 1 - 5 of 15 swedish dissertations containing the words constant power speed range.

2. 1. Continuously Variable Split-Power Transmissions with Several Modes

   Author : Per Mattsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; continuously variable transmission; variator; speed ratio range; ratio coverage; traction drive; mode shift; CVT; planetary gear; power split; IVT; infinitely variable transmission; epicyclic gear train; hydrostatic variator;

   Abstract : A continuously variable transmission (CVT) of split-power design consists of a variator and an arrangement of planetary gears. A black box model describing such transmissions is presented. The model can be used for synthesis as well as loss-free analysis of split-power CVT concepts in general. READ MORE

4. 2. Study of Induction Machines with Rotating Power Electronic Converter

   Author : Yanmei Yao; Chandur Sadarangani; Zi-Qiang Zhu; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Brushless induction machine; efficiency improvement; optimum efficiency; rotating power electronic converter; unity power factor; variable power factor; wound rotor induction machine; Electrical Engineering; Elektro- och systemteknik;

   Abstract : This thesis investigates a novel induction machine topology that uses a rotating power electronic converter. Steady-state and dynamic performance of the topology is studied to understand its operational principle. Furthermore the potential of improving its efficiency and power factor is investigated. READ MORE

5. 3. A permanent magnet synchronous motor for an electric vehicle - design analysis

   Author : Yung-Kang Chin; KTH; []
   Keywords : constant power speed range; electric vehicles; field-weakening; reference flux linkage;

   Abstract : This thesis presents the study and the design analysis of apermanent magnet synchronous motor (PMSM) for the tractionapplication of an electric vehicle. An existing inductiontraction motor for an electric forklift benchmarks the expectedperformances of the proposed PMSM design. READ MORE

6. 4. High Speed (MHz) Switch Mode Power Supplies (SMPS) using Coreless PCB Transformer Technology

   Author : Hari Babu Kotte; kent Bertilsson; Bengt Oelmann; Per Karlsson; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SMPS; High Frequency converters; Coreless PCB transformers; Electrical engineering; Elektroteknik; Electronics; Elektronik;

   Abstract : The most essential unit required for all the electronic devices is the Power Supply Unit (PSU). The main objective of power supply designers is to reduce the size, cost and weight, and to increase the power density of the converter. READ MORE

7. 5. Combustion of gasified biomass: : Experimental investigation on laminar flame speed, lean blowoff limit and emission levels

   Author : Nur Farizan Binti Munajat; Torsten Fransson; Catharina Erlich; Jens Klingmann; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomass gasification; gasified biomass; laminar flame speed; blowoff; emissions;

   Abstract : Biomass is among the primary alternative energy sources that supplements the fossil fuels to meet today’s energy demand. Gasification is an efficient and environmental friendly technology for converting the energy content in the biomass into a combustible gas mixture, which can be used in various applications. READ MORE