Improving synchronous reluctance machine performance by direct capacitance injection through an auxiliary winding
- Authors: Ogunjuyigbe, A. S. O. , Jimoh, A. A. , Nicolae, Dan-Valentin
- Date: 2007
- Subjects: Synchronous generators , Capacitors , Power-factor meters
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/20415 , uj:16094 , Citation: Ogunjuyigbe, A.S.O., Jimoh, A.A. & Nicolae, D.V. 2007. Improving synchronous reluctance machine performance by direct capacitance injection through an auxiliary winding. ICEMS’07 International Conference on Electrical Machines and Systems 2007, October 8-11, Seoul Olympic Parktel, Seoul, Korea:1055-1060
- Description: Abstract: Synchronous reluctance machine with a conventional rotor structure and a 3-phase auxiliary winding attached to a balanced capacitance for power factor improvement will find application in high speed , high power drives. This paper presents an understanding of its operation using the electromagnetic as well as the electric circuit concepts. Analytical and simulation results of this machine configuration show that the torque as well as the power factor performance is better compared to conventional reluctance machine.
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Modelling of a DC excitation of a synchronous generator
- Authors: Mtsamane, M. , Muteba, M.
- Date: 2015-02-28
- Subjects: Synchronous generators , DC excitation systems
- Identifier: uj:5113 , ISBN 978-0-86970-786-9 , http://hdl.handle.net/10210/13945
- Description: This paper describes the modelling of a DC excitation system of a synchronous generator. DC excitation system is one of the various methods of excitation that are applied in power systems. Even though the AC excitation methods are commonly used nowadays, this method still has wide usage in many power system industries. A mathematical model is developed using differential equations from the first principles. Transfer functions of the developed equations are presented and implemented in Matlab Simulink. The performance of the DC excitation is analysed under steady state and transient operations.
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