A Poynting Vector Approach to the Study of Power Flow through a Transformer

• Autorzy: Todeschini G. , Emanuel A. E.
• Języki publikacji: EN

Abstrakty

EN

This work deals with the flow of the electromagnetic energy through an idealized single-phase transformer supplied with nonsinusoidal voltage and supplying a nonlinear load. The electromagnetic flux components of the energy that flows from primary to secondary as well as the flux of energy stored in and ejected from the dielectric space surrounding the windings are identified and quantified. The electromagnetic flux components are correlated to well known instantaneous powers. These powers are not clever mathematic expedients but correct expressions that mirror the actual physical phenomena and lead to a more realistic interpretation of apparent power and its resolution.

Słowa kluczowe

EN

power definition; power quality; Poynting vector; harmonics

• Wydawca: AGH University of Science and Technology ; Lodz University of Technology
• Czasopismo: Electrical Power Quality and Utilisation. Journal
• Rocznik: 2007
• Tom: Vol. 13, nr 1
• Strony: 129--137
• Opis fizyczny: Bibliogr 5 poz.

Twórcy

autor

Todeschini G.

autor

Emanuel A. E.

• Politecnico do Milano, Dipartimento di Elettrotecnica,

Bibliografia

• 1. F e y n m a n R . P. : The Feynman Lectures on Physics. Addison-Weley, New York, 1964, Vol II, Chap. 27, pg 1.11.
• 2. F e r r e r o A . , L e v a S . , Mo r a n d o A . P. : An approach to the non-active power concept in terms of the Poynting-Park vector. Fifth International Workshop on Power Definitions and Measurements under Nonsinusoidal Condition, Milano, Oct. 2000, pp. 35.41.
• 3. C a k a r e s k i Z . , E m a n u e l A . E . : Poynting Vector and the Quality of Electric Energy. Fifth International Workshop on Power Definitions and Measurements under Non-Sinusoidal Conditions, Milano, Oct. 2000, pp. 27.33.
• 4. E m a n u e l A . E . : Poynting Vector and the Physical Meaning of Nonactive Powers. IEEE Trans. on Instrumentantion and Measurement, Vol. 54, no. 4, pp. 1457.62, Aug. 2005.
• 5. C z a r n e c k i L . S .: Could Power Properties of Three-Phase Systems be Described in Terms pf Poynting Vector? IEEE Trans. on Power Delivery, Vol. 21, no. 1, pp. 339.44, Jan. 2006.