A Quick Response Power Factor Detector for Nonlinear Loads

Abstract:

A fast power factor detector for nonlinear loads is proposed to overcome the drawback of conventional detectors, which can measure only the power factor of linear loads. The design of the proposed detector is based on the concept of additional characteristic of trigonometric function. It does not require any low-pass filter or integrator. Therefore, the transient response of the proposed detector is much faster than that of the conventional detectors. The theoretical response time of the proposed detector is less than one-fourth of a cycle. Because of its promising accuracy and rapid transient response, it can be used in many systems such as the control of power systems, and active power filters, to improve their transient performance. Theoretical analysis and experimental results are also detailed in this paper.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 2433-2438
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.2433
• Online since: January 2013
• Authors: Maoh Chin Jiang, Bing Jyun Shih
• Keywords: Nonlinear Loads, Power Factor, Power Quality (PQ)

References

[1] S. Takata, R. Ueda, E. Ohta and H. Nakashima: IEEE Trans. on Power Apparatus and Systems, Vol. 94 (1975), pp.2131-2134.

DOI: 10.1109/t-pas.1975.32063

[2] A. Kuppurajulu, P. C. Majhee and C. Venkataseshaiah: IEEE Trans. on Power Apparatus and Systems, Vol. 90 (1971), pp.331-338.

DOI: 10.1109/tpas.1971.293009

[3] R. M. Inigo: IEEE Trans. on Industrial Electronics and Control Instrumentation, Vol. 27 (1980), pp.271-278.

[4] M. S. M. Al-Ani and M. A. H. Abdul-Karim: Int. J. Electronics, Vol. 52 (1982), pp.463-470.

[5] B. A. Hafeth and M. A. H. Abdul-Karim: Int. J. Electronics, Vol. 58 (1985), pp.513-519.

[6] J. C. Wu and H. L. Jou: IEEE Trans. on Instrumentation and Measurement, Vol. 44 (1995), pp.919-922.