EPE Association: EPE 2007 - Subtopic 03-2 - DS: Power system integration

EPE 2007 - Subtopic 03-2 - DS: Power system integration
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 03: 'Power system integration' > EPE 2007 - Subtopic 03-2 - DS: Power system integration

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   An Optimized Controller with Zero Steady Circulating Current in Multi-inverter Parallel Operation
By LI Wuhua [View]
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Abstract: The abstract is not available.

   Contribution to the stress grading in integrated power modules
By DUTARDE Emmanuel; MERMET-GUYENNET Michel; DAGDAG Selim; LEBEY Thierry; DUCHESNE Cyrille [View]
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Abstract: In integrated power modules, insulating materials often constitute the weakest points. Oversizing these materials is a basic solution to guarantee both service life and reliability of the whole system. Nevertheless this oversizing is against power electronics integration. And in railways applications an increase of the voltage of semiconductor devices is observed leading to new problems both at the power module and at the packaging levels. New methods and solutions have to be found to accompany the trend which consists at the same time to increase the power density and the voltage. Among other problems stress gradation must be achieved. It's within this framework that we develop the work we present in the following. Triple points are one of the main causes of failures in high voltage power electronics modules. Such points take place where discontinuities occur in the electrical parameters (both permittivity and conductivity) leading to electric stresses enhancement. In power module a classical example is the interface between the ceramic substrate, the encapsulation gel and the metallization. This triple interfaces is usually named "triple point" and is the key for reliability. These stresses enhancement must be controlled in order to avoid dielectric breakdown or partial discharges ignition i.e. phenomenon leading to a reduction of the service life of the module.

   Power Loss Design Platform for High Output Power Density Converters
By SHIMIZU Toshihisa; OHASHI Hiromichi; HAYASHI Yusuke; TAKAO Kazuto [View]
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Abstract: A novel circuit parameter design concept called "Power Loss Design Platform" has been proposed to realize high output power density (OPD) converters. The platform concept enables the exact power loss design, taking the effect of correlations among converter parameters into consideration under real circuit condition. An experimental apparatus has been fabricated based on the platform concept. Details of the power loss design methods for semiconductor power devices and passive filters are presented. The validity of proposed methods is confirmed in the chopper circuit and the inverter circuit. The platform concept for the circuit parameter design enables the optimal circuit parameter extraction under real circuit conditions.

EPE 2007 - Subtopic 03-2 - DS: Power system integration
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 03: 'Power system integration' > EPE 2007 - Subtopic 03-2 - DS: Power system integration
	[return to parent folder]

	An Optimized Controller with Zero Steady Circulating Current in Multi-inverter Parallel Operation By LI Wuhua	[View] [Download]
Abstract: The abstract is not available.

	Contribution to the stress grading in integrated power modules By DUTARDE Emmanuel; MERMET-GUYENNET Michel; DAGDAG Selim; LEBEY Thierry; DUCHESNE Cyrille	[View] [Download]
Abstract: In integrated power modules, insulating materials often constitute the weakest points. Oversizing these materials is a basic solution to guarantee both service life and reliability of the whole system. Nevertheless this oversizing is against power electronics integration. And in railways applications an increase of the voltage of semiconductor devices is observed leading to new problems both at the power module and at the packaging levels. New methods and solutions have to be found to accompany the trend which consists at the same time to increase the power density and the voltage. Among other problems stress gradation must be achieved. It's within this framework that we develop the work we present in the following. Triple points are one of the main causes of failures in high voltage power electronics modules. Such points take place where discontinuities occur in the electrical parameters (both permittivity and conductivity) leading to electric stresses enhancement. In power module a classical example is the interface between the ceramic substrate, the encapsulation gel and the metallization. This triple interfaces is usually named "triple point" and is the key for reliability. These stresses enhancement must be controlled in order to avoid dielectric breakdown or partial discharges ignition i.e. phenomenon leading to a reduction of the service life of the module.

	Power Loss Design Platform for High Output Power Density Converters By SHIMIZU Toshihisa; OHASHI Hiromichi; HAYASHI Yusuke; TAKAO Kazuto	[View] [Download]
Abstract: A novel circuit parameter design concept called "Power Loss Design Platform" has been proposed to realize high output power density (OPD) converters. The platform concept enables the exact power loss design, taking the effect of correlations among converter parameters into consideration under real circuit condition. An experimental apparatus has been fabricated based on the platform concept. Details of the power loss design methods for semiconductor power devices and passive filters are presented. The validity of proposed methods is confirmed in the chopper circuit and the inverter circuit. The platform concept for the circuit parameter design enables the optimal circuit parameter extraction under real circuit conditions.