Negative incremental impedance and stability of fluorescent lamps

Author

Deng, Edward ; Cuk, Slobodan

Author_Institution

GE Corp. R&D, Niskayuna, NY, USA

Volume

2

fYear

1997

fDate

23-27 Feb 1997

Firstpage

1050

Abstract

Fluorescent lamps have a special V-I characteristic. Their incremental impedance is defined and studied in the frequency domain. It is found that the negative incremental impedance of a fluorescent lamp can be characterized by a right half plane zero. The existence of such a result is explained by the modified Francis equation. Two ballasting approaches, series impedance and close-loop operation, are proposed to stabilize lamp operation. Stability criteria based on the Nyquist criterion are developed for both approaches

Keywords

Nyquist criterion; electric impedance; fluorescent lamps; frequency-domain analysis; lamp accessories; stability; Nyquist criterion; V-I characteristic; ballasting approaches; close-loop operation; fluorescent lamps; frequency domain; modified Francis equation; negative incremental impedance; right half plane zero; series impedance operation; stability criteria; Discharges; Electronic ballasts; Equations; Fluorescent lamps; Frequency domain analysis; Impedance; Mathematical model; Shape measurement; Stability criteria; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3704-2

Type

conf

DOI

10.1109/APEC.1997.575779

Filename

575779