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Three level neutral-point-clamped(NPC) single-phase cascaded inverter is used in advanced cophase traction power supply system. Because a lot of power modules and switches are used, reliability of this system could be decreased. To diagnose fault of cascaded inverter, different fault types of individual module are analyzed. A fault diagnostic method is proposed to diagnose open circuit fault of single-phase...
Vehicular communications have become more and more popular as a way to increase the comfort and safety of the transportation systems. The IEEE 802.11p/1609.x protocol stack, also known as the Wireless Access in Vehicular Environment (WAVE), has attracted much attention from researches. A large number of literatures and simulation platforms have been proposed for the performance evaluation and enhancements...
Switched Reluctance Motor used widely in the industrial field result with its excellent performance. This paper studies the closed-loop velocity control in SRM system, which based on TMS320F2812 DSP. The control algorithm and operational modes have been discussed in detail. With proposed control strategy, it improves the dynamic and steady performance of SRM. The theoretical analysis is verified by...
There are two causes of network congestion: one is the lack of network resources, and the other is the irrational allocation of network resources. While traditional congestion control methods such as rate control, window mechanism, queue control, etc. can be applied to solve the congestion problem, but for the later congestion case, the fundamental solution is to make more effectively use of the network...
Routing schemes for network recovery aim to find connection paths under the scenarios of link or node failures that disrupt end-to-end connectivity. Several recovery schemes consider a proactive search for alternative links (or paths) that can restore the lost connectivity after the failure. However, the effect that the modification of network traffic after the switch over the alternative paths brings...
A fast rerouting scheme is proposed to guarantee the QoS performance of rerouted path when handling link and node failures. The new scheme is based on deflection routing mechanism and improves on two aspects: first, it can promptly handle single node failure as well as single link failure, second, QoS metric is taken into accounted when calculating recovery routes. Simulation results show that the...
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