EPE Association: EPE-PEMC 2004 - Topic 01-6: Passive components

EPE-PEMC 2004 - Topic 01-6: Passive components
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 01: DEVICES > EPE-PEMC 2004 - Topic 01-6: Passive components

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   An Improved Model Of A Double Layer Capacitor For Power Electronic Applications
By Francesco Castelli Dezza, Michele Diforte, Stefano Gervasini, Marco Mauri [View]
[Download]

Abstract: Double layer capacitors (DLC) for power electronic applications are emerging devices. Potential applications are in short time UPS or peak load shaving in combination with other power supply devices. The modelling of these elements is a hard task in particular when it is necessary to simulate a complex system e.g. in power electronic or automotive applications. Accuracy and low numerical complexity are two important targets. This paper presents an improved model for DLC which consists of four RC branches. A method to identify circuit parameters is presented. Measurements of a double layer capacitor are presented and circuit behaviour is compared with experimental results.

   Coreless Integrated Transformer Gate Drive Circuit For Power Mosfet/igbt
By P. Poulichet, C. M. Tassetti, F. Costa, E. Laboure [View]
[Download]

Abstract: This paper is focused on the design and the realization of a gate drive circuit that use a integrated coreless transformer. This gate drive circuit can be used for MOSFET and IGBT devices. The insulation is often required for the drive of power transistor. This transformer can be integrated near the power transistor and as it not requires manual winding, it will reduce the cost of the gate drive circuit. In order to reduce the resistance of the primary and the secondary, the winding is realized with copper electroplated. Lift off techniques was used to remove the seed layer necessary for the copper electroplating. The realization of the gate drive electronic circuit is presented. The low frequency measurements of the switching of a power transistor will be performed. Experimental results in frequency domains for the integrated transformer and in time domains for the gate drive circuit will be presented in the paper.

   Monolithic Integretion Of A Low Power Piezoelectric Transformer
By Dejan Vasic, Emmanuel Sarraute, Francois Costa, Patrick Sangouard, Eric Cattan [View]
[Download]

Abstract: This paper presents the integration of a piezoelectric micro-transformer in a silicon substrate. The selected topology of the transformer takes advantage of the active materials like PZT or AlN. These structure is constituted by a unimorph circular membrane (PZT/Silicon). Manufacturing process is compatible with MOSFET technologies. The application of this transformer is to achieve galvanic insulation in power converter to supply micro-systems requiring very low amount of energy. An analytical model has enabled us to determine the electric equivalent circuit of the transformer, to express the resonance frequencies and to plot the deflection and strain shapes of the membrane. A mechanical characterization, has been carried out by interferometer and an electric characterization has been conducted with a first prototype.

   Planar Controlled-Leakage-Inductance Transformer With Magnetic Shunt - Application In Resonant Ac/dc Converter
By Vytenis Leonavicius, M. Duffy, S. C. O Mathuna [View]
[Download]

Abstract: The design of a planar controlled-leakage-inductance transformer for a resonant converter application is presented. Transformer leakage inductance between loosely coupled primary and secondary windings is controlled by means of a magnetic shunt inserted between two planar E core halves. This magnetic component combines the functions of a resonant inductor and a transformer, and is investigated in an AC/DC converter with a series resonant topology. The electrical performance and power losses of the new integrated component are compared with a discrete planar magnetics realization. A comparison of commercial magnetic materials that are suitable for use in the magnetic shunt is given, which emphasizes their impact on total component losses.

   Ultracapacitors A Way Of Advanced Power Storage
By Juergen Auer, Adrian Schneuwly, Gianni Sartorelli [View]
[Download]

Abstract: Today, ultracapacitors are a viable component for production-intent designs. In the power electronic world, numerous firms are well into the production cycle for ultracapacitor-based systems, recognizing the advantages and availability of the ultracapacitor to meet their business and technical requirements. Ultracapacitors are available, cost effective, and perform well in industrial systems. The paper presents and discusses existing and new applications including transportation engineering, uninterruptible power supplies, renewable energy resources and industrial electronics.

EPE-PEMC 2004 - Topic 01-6: Passive components
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 01: DEVICES > EPE-PEMC 2004 - Topic 01-6: Passive components
	[return to parent folder]

	An Improved Model Of A Double Layer Capacitor For Power Electronic Applications By Francesco Castelli Dezza, Michele Diforte, Stefano Gervasini, Marco Mauri	[View] [Download]
Abstract: Double layer capacitors (DLC) for power electronic applications are emerging devices. Potential applications are in short time UPS or peak load shaving in combination with other power supply devices. The modelling of these elements is a hard task in particular when it is necessary to simulate a complex system e.g. in power electronic or automotive applications. Accuracy and low numerical complexity are two important targets. This paper presents an improved model for DLC which consists of four RC branches. A method to identify circuit parameters is presented. Measurements of a double layer capacitor are presented and circuit behaviour is compared with experimental results.

	Coreless Integrated Transformer Gate Drive Circuit For Power Mosfet/igbt By P. Poulichet, C. M. Tassetti, F. Costa, E. Laboure	[View] [Download]
Abstract: This paper is focused on the design and the realization of a gate drive circuit that use a integrated coreless transformer. This gate drive circuit can be used for MOSFET and IGBT devices. The insulation is often required for the drive of power transistor. This transformer can be integrated near the power transistor and as it not requires manual winding, it will reduce the cost of the gate drive circuit. In order to reduce the resistance of the primary and the secondary, the winding is realized with copper electroplated. Lift off techniques was used to remove the seed layer necessary for the copper electroplating. The realization of the gate drive electronic circuit is presented. The low frequency measurements of the switching of a power transistor will be performed. Experimental results in frequency domains for the integrated transformer and in time domains for the gate drive circuit will be presented in the paper.

	Monolithic Integretion Of A Low Power Piezoelectric Transformer By Dejan Vasic, Emmanuel Sarraute, Francois Costa, Patrick Sangouard, Eric Cattan	[View] [Download]
Abstract: This paper presents the integration of a piezoelectric micro-transformer in a silicon substrate. The selected topology of the transformer takes advantage of the active materials like PZT or AlN. These structure is constituted by a unimorph circular membrane (PZT/Silicon). Manufacturing process is compatible with MOSFET technologies. The application of this transformer is to achieve galvanic insulation in power converter to supply micro-systems requiring very low amount of energy. An analytical model has enabled us to determine the electric equivalent circuit of the transformer, to express the resonance frequencies and to plot the deflection and strain shapes of the membrane. A mechanical characterization, has been carried out by interferometer and an electric characterization has been conducted with a first prototype.

	Planar Controlled-Leakage-Inductance Transformer With Magnetic Shunt - Application In Resonant Ac/dc Converter By Vytenis Leonavicius, M. Duffy, S. C. O Mathuna	[View] [Download]
Abstract: The design of a planar controlled-leakage-inductance transformer for a resonant converter application is presented. Transformer leakage inductance between loosely coupled primary and secondary windings is controlled by means of a magnetic shunt inserted between two planar E core halves. This magnetic component combines the functions of a resonant inductor and a transformer, and is investigated in an AC/DC converter with a series resonant topology. The electrical performance and power losses of the new integrated component are compared with a discrete planar magnetics realization. A comparison of commercial magnetic materials that are suitable for use in the magnetic shunt is given, which emphasizes their impact on total component losses.

	Ultracapacitors A Way Of Advanced Power Storage By Juergen Auer, Adrian Schneuwly, Gianni Sartorelli	[View] [Download]
Abstract: Today, ultracapacitors are a viable component for production-intent designs. In the power electronic world, numerous firms are well into the production cycle for ultracapacitor-based systems, recognizing the advantages and availability of the ultracapacitor to meet their business and technical requirements. Ultracapacitors are available, cost effective, and perform well in industrial systems. The paper presents and discusses existing and new applications including transportation engineering, uninterruptible power supplies, renewable energy resources and industrial electronics.