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Considering the ongoing paradigm shift of large scale solar plants from central inverters to multistring inverters, new associated logistic requirements have highlighted the need to lower the weight of power converters without compromising efficiency and reliability. To meet this need, Silicon carbide based semiconductors are considered an enabling technology as they allow weight reduction in power...
This paper compares a non-isolated DC/DC converter (interleaved Buck/Boost) and an isolated converter (Dual Active Bridge) in a bidirectional charging application for Electric Vehicles. Both converters are modeled, controlled using small-signal models, and their operation in several modes is simulated and then compared. The results of the comparison using several criteria related to automotive applications...
Substation automation systems provide high level of automation for both substation and distribution network. Communication in modern substation automation systems is based on Ethernet, TCP/IP and interoperable protocols within standard network infrastructure. Communication security and reliability become important and must be considered to ensure correct operation of substation automation systems...
This paper presents a technological solution for designing an assistive device for a biomechanical study of the Sit-to-Stand movement (STS). This device targets people with disabilities following a stroke. The control algorithms are implemented in TwinCAT runtime environment. The communication between all the component and the control computer is ensured via the EtherCAT fieldbus. The aim of this...
Clock synchronization is one of the most essential assets for distributed real-time systems, as sensing, control and actuation require synchronized communication to meet real-time deadlines. We propose a distributed monitoring method to detect if an adversary is interfering with the clock synchronization protocol. The monitor uses certain network indicators and a set of rules to decide about switching...
Over the previous years, many service-oriented (SO) solutions have been proposed by European research projects for the technological advancement of industrial systems. These projects typically include a software reference architecture (RA) based on the concepts of service-oriented architectures (SOA) and, often-times, an accompanying technology stack to guarantee system-wide interoperability. In this...
Many applications for machine-to-machine (M2M) communications are characterized by large numbers of devices with sporadic transmissions and subjected to low energy budgets. This work addresses the importance of energy consumption by proposing a new Medium Access Control (MAC) mechanism for improving the energy efficiency of IEEE 802.11ah, a standard targeting M2M communication. We propose to use the...
The ever-increasing variety of services built on top of the Controller Area Network (CAN), along with the recent discovery of vulnerabilities in CAN-based automotive systems (some of them demonstrated in practice), stimulated a renewed attention to security-oriented enhancements of the CAN protocol. The issue is further compounded nowadays because, unlike in the past, security can no longer be enforced...
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