Open Access Open Access  Restricted Access Subscription or Fee Access

Dynamic Characteristic of Permanent Magnet Assisted Self-excited Synchronous Reluctance Generator

Emmanuel Chinweikpe Obuah, Briggs Iyenemi

Abstract


 

The use of self-excited synchronous reluctance generator is gaining interest due to its simplicity and inexpensiveness in terms of manufacturing. The problem of this machine which is best suited in a standalone application is that it has poor power factor. This paper presents a comparative study of a PM assisted synchronous reluctance generator with a regular reluctant generator. The machine was studied using rotor rotating frame and embedded MATLAB was used to simulate the machine. Results shows that the generator with PM exhibited a better performance in terms of voltage and power output due to the PM flux. This was possible at power factor of 0.999 and excitation capacitor value of 70 μF and PM flux of 0.8. Reducing the value of the excitation capacitor hampered the generator performance. However, increasing the PM flux at the lower capacitor, produces a suitable voltage for the generator.
Keywords: excitation capacitor, output power, PM flux, torque, voltage build up


Full Text:

PDF

References


References

J. K. Kostko, "Polyphase reaction synchronous motors," Journal Amer. Inst. Elect. Engrs, vol 42, pp. 1162-1168, 1923.

P. F. Baurer and V. B. Honsinger, “Synchronous Induction motor having a segmented rotor and squirrel cage winding, ” U.S. Patten 2733362, Jan 1956

P. J. Lawrenson and L.A. Agu, “A new unexcited synchronous machine,” IEEE Proceedings, vol. 110, no. 7, p. 1275, 1963

E.S. Obe, T. Senjyu, Analysis of a polyphase synchronous reluctance motor with two identical stator windings, Electr. Power Syst. Res. (EPSR) vol.76, no 6–7, pp.515–524, (2006).

L.U. Ahih, E.S. Obe and S. E. Abonyi, Modelling and Performance of Hybrid synchronous reluctance machine with adjustable Xd/Xq ratio, IET power application, August, 2014.

M. J. Kamper, F. S. Merwe, Vander, and S. Williamson, Direct Finite Element Design Optimisation of the Cageless Reluctance Synchronous Machine. IEEE Transactions on Energy Conversion, vol.11, no.3, pp.547–555, 1996.

F. Parasitili and M. Villani, Optimisation Analysis of Synchronous Reluctance Motor Design. Pages276–280of: IEEE-Electrical Machines and Drives, 7th International Publication. IEEE, 1995

C. M. Donaghy-Spargo, "Synchronous reluctance motor technology: opportunities, challenges and future direction," Engineering technology reference, pp. 1-15, 2016

P. Niazi, "Permanent Magnet Assisted Synchronous Reluctance Motor Design and Performance Improvement,” PhD thesis, Texas A&M University, US, December, 2005.

M. M. Ali, S. M. Allam, T. H Abdel-Mondel. Dynamic characteristics of an isolated self-excited synchronous reluctance generator driven by a wind turbine, Turkish Journal of Electrical Engineering & Computer Sciences, Vol.24, pp. 5238 -5250, 2016.

T. R. Ayodele and A. S. O. Ogunjuyigbe, “Wind energy resource, wind energy conversion system modelling and integration: a survey,” International Journal of Sustainable Energy, vol. 34, pp. 657–671, 2015.

E.S. Obe and L.U. Anih. ‘’ Influence of Rotor Cage on the Performance of a Synchronous Reluctance Generator’’ Journal of Electric Power Components and Systems, Taylor & Francis Group, Vol.38, pp 960–973, 2010.

M. Haavisto, "Studies on the Time-Dependent Demagnetization of Sintered NdFeB Permanent Magnets," PhD thesis, Tampere University of Technology Finland, 22 November 2013.

A. I. Alolah, “Capacitance requirements for three‐phase self‐excited reluctance generator,” IEE Proceedings on Generation, Transmission and Distribution, vol. 138, pp. 193–198, 1991.

A. S. O. Ogunjuyigbe, T. R. Ayodele and, B. B. Adetukon, Stead state analysis of wind driven self-excited reluctance generator for isolated application, Elsivier Electric power systems research, vol. 114, pp. 983-1004, 2017.




DOI: https://doi.org/10.37628/ijemd.v5i2.1240

Refbacks

  • There are currently no refbacks.