Topic
Dual module
About: Dual module is a research topic. Over the lifetime, 73 publications have been published within this topic receiving 899 citations.
Papers published on a yearly basis
Papers
TL;DR: In this paper, the authors report on the experimental characterization of a 1200-V, 800-A all-SiC dual power module that incorporates twenty 80-A SiC MOSFETs and twenty 50-A Schottky diodes.
Abstract: Enhanced material properties of silicon carbide (SiC) offer improved performance capabilities for power electronic devices compared to traditional silicon (Si) components. This paper reports on the experimental characterization of a 1200-V, 800-A all-SiC dual power module that incorporates twenty 80-A SiC MOSFETs and twenty 50-A SiC junction barrier Schottky diodes. Forward and reverse conduction characteristics were measured at multiple gate voltages, current sharing was examined between the MOSFETs, and switching energies were calculated for various currents. Additionally, this module has operated in a full-bridge circuit with a peak loading of 900 Adc, a 600 Vdc bus, and a junction temperatures of 153°C. From the experimental data, a model of the module was created and used in a dc-ac inverter simulation study to demonstrate the possible benefits of SiC compared to Si technology. The use of an all-SiC module was shown to reduce inverter losses by 40% or more for most operating conditions. Furthermore, for similar output current levels, the all-SiC module can operate at switching frequencies four times higher than that of the Si module. This advanced dual power module demonstrates the ability to produce a high-current high-power switch using SiC technology.
127 citations
Patent•
14 Nov 1997
TL;DR: In this article, a scheme is defined by suitable proprietary encryption keys for enabling communication and data transfer between the two modules belonging to a common scheme and for preventing communication and transfer between different schemes.
Abstract: An apparatus and a method for providing access to a secured data or area includes at least two secure data modules which contain security data and other information and which belong to a particular security scheme and a dual module reader for reading data and permissions instructions contained on the secure data modules. The two secure data modules include an enabling module and an interrogatable module. The interrogatable module and the enabling module communicate with each other via a dual module reader. Communication between the two modules is allowed as long as the two modules are members of the same security scheme. A scheme is defined by suitable proprietary encryption keys for enabling communication and data transfer between the two modules belonging to a common scheme and for preventing communication and data transfer between two modules belonging to different schemes. The communication between the two modules provides an improved data security and access control system which eliminates the need for multiple passwords for various operations and also prevents problems associated with conventional access cards which are used in conjunction with passwords.
105 citations
Patent•
9 Mar 2010TL;DR: In this article, a dual-module portable device is presented, where a motion of a first module of the dual module portable device may be detected and a position of the first module may be determined relative to the second module.
Abstract: A dual module portable device may be provided. A motion of a first module of the dual module portable device may be detected. Based at least in part on the detected motion, a position of the first module may be determined relative to the second module of the portable device. Once the relative position of the first module has been determined, a portion of a user interface associated with the relative position may be displayed at the first module.
87 citations
TL;DR: In this article, the authors discuss general necessary and sufficient conditions for a module extension Banach algebra to be n-weakly amenable, for n = 0, 1, 2.
Abstract: We start by discussing general necessary and sufficient conditions for a module extension Banach algebra to be n-weakly amenable, for n = 0,1,2; Then we investigate various special cases All these case studies finally provide us with a way to construct an example of a weakly amenable Banach algebra which is not 3-weakly amenable This answers an open question raised by H G Dales, F Ghahramani and N Gronbaek
87 citations
TL;DR: In this article, it was shown that a 6-dimensional algebra with a semi-Gorenstein-projective module M which is not torsionless is left weakly Gorenstein.
Abstract: Let A be an artin algebra. An A -module M will be said to be semi-Gorenstein-projective provided that Ext i ( M , A ) = 0 for all i ≥ 1 . All Gorenstein-projective modules are semi-Gorenstein-projective and only few and quite complicated examples of semi-Gorenstein-projective modules which are not Gorenstein-projective have been known. One of the aims of the paper is to provide conditions on A such that all semi-Gorenstein-projective left modules are Gorenstein-projective (we call such an algebra left weakly Gorenstein). In particular, we show that in case there are only finitely many isomorphism classes of indecomposable left modules which are both semi-Gorenstein-projective and torsionless, then A is left weakly Gorenstein. On the other hand, we exhibit a 6-dimensional algebra Λ with a semi-Gorenstein-projective module M which is not torsionless (thus not Gorenstein-projective). Actually, also the Λ -dual module M ∗ is semi-Gorenstein-projective. In this way, we show the independence of the total reflexivity conditions of Avramov and Martsinkovsky, thus completing a partial proof by Jorgensen and Sega. Since all the syzygy-modules of M and M ∗ are 3-dimensional, the example can be checked (and visualized) quite easily.
37 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 8 |
| 2019 | 1 |
| 2018 | 6 |
| 2017 | 4 |
| 2015 | 2 |