Sökning: "permanent magnet synchronous machine PMSM"
Visar resultat 1 - 5 av 16 avhandlingar innehållade orden permanent magnet synchronous machine PMSM.
1. Design of a fault-tolerant fractional slot PMSM for a vehicle application
Sammanfattning : In automotive applications, the PMSM is an interesting alternative due to the high efficiency requirement; as only a limited amount of energy can be stored in the relatively expensive battery. Another advantage is the high torque and power density since it is very important to save especially space but also weight in vehicle applications. LÄS MER
2. Control of permanent-magnet synchronous machines in automotive applications
Sammanfattning : 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. LÄS MER
3. Synchronous Machines with High-Frequency Brushless Excitation for Vehicle Applications
Sammanfattning : Electrically excited synchronous machines (EESM) are becoming an alternative to permanent magnet synchronous machines (PMSM) in electric vehicle (EV) applications. This mainly attributes to the zero usage of rare-earth material as well as the capabilities of high starting torque and good field weakening provided by EESM. LÄS MER
4. Modelling and design of electromechanical actuators for active suspension in rail vehicles
Sammanfattning : .... LÄS MER
5. Electric machine control for energy efficient electric drive systems
Sammanfattning : Pure electric vehicles and hybrid electric vehicles are of increasing interest in the automotive industry, much due to challenges such as emission level legislations and the environmental impact of the transportation sector. When continuously striving for better performing and more energy efficient electric powertrains, with high drivability and redundancy, there is an ever increasing need for further research and development in the areas of controls, design and system level optimization. LÄS MER