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Frozen leg operation of a three-phase dual active bridge DC/DC converter at light loads
, Article Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC ; Volume 2018-March , 18 April , 2018 , Pages 3385-3391 ; 9781538611807 (ISBN) ; Blaabjerg, F ; Yazdani, F ; Bahman, A. S ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2018
Abstract
A three-phase dual active bridge (DAB) converter is designed and constructed as the DC/DC stage of a 50 kW fast charger station. Recently introduced 300A SiC power modules and drivers are utilized in the converter to obtain a high efficiency. Each module has two interconnected switches with anti-parallel diodes resembling a converter leg. It is observed that the driver halts the module operation as a result of protective actions such as over-current, gate under-voltage, or gate overvoltage. In such case the module operates as a leg with two diodes until an external hardware signal resets the driver. The aim of this paper is to provide analysis, simulation and experiments for a three-phase...
Feature specific control flow checking in COTS-based embedded systems
, Article Proceedings - 3rd International Conference on Dependability, DEPEND 2010, 18 July 2010 through 25 July 2010 ; July , 2010 , Pages 58-63 ; 9780769540900 (ISBN) ; Miremadi, S.G ; IARIA ; Sharif University of Technology
2010
Abstract
While the Control Flow Checking (CFC) methods are using the ordinary instruction set and general Arithmetic and Logic Unit (ALU) features to protect the programs against the transient faults, this paper presents a new kind of CFC method, called feature specific CFC. The idea behind this method is using a specific internal hardware in modern processors which provides the ability to monitor internal various parameters of the program. This method is a pure software method and the external hardware overhead is zero. Other overheads have been measured experimentally by executing the workloads on a Pentium system. The execution time overhead is between 42% and 67% and the program size overhead is...