Search for dissertations about: "speed electric motor"

Showing result 1 - 5 of 39 swedish dissertations containing the words speed electric motor.

2. 1. On Control of Permanent-Magnet Synchronous Motors in Hybrid-Electric Vehicle Applications

   Author : Oskar Wallmark; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase-locked loop; signal injection; Electric drive; sensorless control; harmonics; position estimation; speed estimation; hybrid-electric vehicle; permanent-magnet synchronous motor; electric vehicle; vector control;

   Abstract : This thesis deals with design and analysis of the control system structure for electric drives equipped with permanent-magnet synchronous motors with a salient rotor. The intended application is propulsion in electric- and hybrid-electric vehicles. READ MORE

4. 2. Efficiency of building related pump and fan operation - Application and system solutions

   Author : Caroline S Markusson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; motor drive; control-on-demand; hydronic systems; air systems; electric motor; variable speed; decentralized systems; pump; electric energy; fan; local systems; efficiency;

   Abstract : The electric energy use in Swedish non-industrial buildings is 71 TWh per year out of which 30 TWh per year is used for the operation of technical systems. A significant part of those 30 TWh/year is used for pump and fan operation. The Swedish parliament decided in 2009 on a national energy and climate plan. READ MORE

5. 3. On design methods for mechatronics : servo motor and gearhead

   Author : Fredrik Roos; Jan Wikander; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; mechatronics design methodology; servo systems; electric motors; gears; auxiliary systems; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

   Abstract : The number of electric powered sub-systems in road-vehicles is increasing fast. This development is primarily driven by the new and improved functionality that can be implemented with electro-mechanical sub-systems, but it is also necessary for the transition to electric and hybrid-electric drive trains. READ MORE

6. 4. 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

7. 5. Control of permanent-magnet synchronous machines in automotive applications

   Author : Oskar Wallmark; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric drive; electric vehicle; fault tolerance; hybrid electric vehicle; inverter; in-wheel motor; loss minimization; permanent-magnet synchronous machine; phase-locked loop; position estimation; sensorless control; vector control;

   Abstract : This thesis deals with the design and analysis of control system structures for electric drives equipped with permanent-magnet synchronous machines (PMSMs) in automotive applications. Sensorless control, meaning vector control without a mechanical rotor position sensor, is considered and a speed and position estimator of phase-locked loop type is analyzed thoroughly. READ MORE