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A four-switch three-phase (FSTP) rotor-side converter (RSC) is proposed in this paper for doubly-fed induction generator based wind turbines (DFIG-WT) to increase the system reliability. The proposed converter topology has satisfactory robustness to open-circuit faults, and it is demonstrated to be feasible under the circumstance of wind speed change. According to different current flow directions,...
This paper aims to improve the fault-tolerant ability of doubly-fed induction generator based wind turbines (DFIG-WTs) by applying a four-switch three-phase (FSTP) topology based grid side converter (GSC). Once a switch breaks down in the three-phase GSC, the corresponding phase is connected to the midpoint of the DC bus to make the wind turbine (WT) continue working properly. The operation of the...
For the high-voltage direct-current (HVDC) power transmission system of offshore wind power, dc/dc converters are the potential solution to collect the power generated by off-shore wind farms to HVDC terminals. The converters operate with high-voltage gain, high efficiency, and fault tolerance over a wide range of operating conditions. In this paper, an isolated ultrahigh step-up dc/dc converter with...
This paper proposes a novel anomaly detection method of network worms. The algorithm detects unknown worms by multidimensional worm abnormal detection technology, extracts its feature string via analyzing worm data with leap-style and creates new rules to detect the corresponding worm in case that the unknown worm attacks again. The paper has realized the automatic detection of unknown worms. Experiment...
Data center networks (DCNs) are inherently failure-prone owing to the existence of many links, switches and servers. Many times the failures of the components may be correlated resulting a set of connected components failing together. This correlated failure behaviour could be captured through the use of fault regions [1]. This paper explores the effect of such failures in DCNs, using four topologies,...
This paper is mainly devoted to the second-order consensus problem of multiple agents with different significant inertias in directed networks with fixed and switching balanced topologies. On the assumption that each agent knows the desired constant velocity, if the fixed interaction digraph G is weakly connected, then all agents achieve consensus on their positions with their velocities converging...
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