Showing papers by "Jean-Christophe Crebier published in 1999"
27 Jun 1999
TL;DR: In this paper, a new forecast method is presented based on a frequency domain analysis for single switch boost rectifier in continuous mode operation using a PWM control strategy and compared to circuit oriented simulation and experimental results which validate its interest.
Abstract: PFC rectifiers produce EMI. Because of standard requirements, high frequency disturbances must be studied in order to be reduced. A new forecast method is presented. It is based on a frequency domain analysis. It saves time and computer memory compared to classical time domain analysis methods. A description and valid conditions are given. The method is applied to the single switch boost rectifier in continuous mode operation using a PWM control strategy. It is compared to circuit oriented simulation and experimental results which validate its interest.
28 citations
27 Jun 1999
Abstract: Line impedance stabilisation networks (LISNs) are used in conducted disturbance measurements for reproducibility and standard experiments. However, depending on topology choice and electrical environment, the behavior of this device might generate errors. LISN tasks are recalled with respect to corresponding standards. Theoretical studies of single and double cell LISNs are made (with respect to input and output variable impedance). It is shown that single cell devices might be quite susceptible with respect to line impedance. Converter input impedance effect is underlined. Besides, depending on LISN characteristics, the addition of passive components between the measurement device and the converter induces behavior changes. This might even disturb converter behavior itself. Finally, practical measurement condition effects are discussed.
18 citations
Patent•
20 May 1999
TL;DR: In this article, a convertisseur continu-courant continu comprend un premier etage (10) de conversion d'une tension continue en tension alternative, un deuxieme andage (14) of conversion de la tension alternative delivree par le premier andage(10) en une tension continue reglable and des moyens (16) d'isolation galvanique interposes entre les deuxeme etages de conversion.
Abstract: Ce convertisseur courant continu-courant continu comprend un premier etage
(10) de conversion d'une tension continue en tension alternative, un deuxieme etage (14)
de conversion de la tension alternative delivree par le premier etage (10) en une tension
continue reglable et des moyens (16) d'isolation galvanique interposes entre les deux
etages de conversion. Il comporte en outre des moyens de conversion courant continu-courant
continu de reglage de la tension de sortie integres au deuxieme etage (14) de
conversion.