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Although the advantages of model-based fault diagnosis are becoming more and more obvious in system fault diagnosis, the computation efficiency of minimal hitting sets is the main bottleneck. To improve the calculating speed of existed algorithms and solve the problem of incomplete minimal hitting sets, this paper proposes an improved differential evolution algorithm. Introduction of binary to differential...
For efficient use of regenerative braking energy in traction supply system, a novel Energy-saving traction supply system is proposed in this paper, consisting of diode rectifiers with high-power PWM rectifiers. In this paper, a multiple topology with PWM rectifiers is given, as well as its control strategy. Also, based on the output characteristics of diode rectifier, a coordinated control strategy...
The application of conventional traction supply system for urban railway transportation implies huge energy waste and electrical pollution, in which the energy regenerated from the braking of vehicles cannot be feedback into AC grid. What's more, its DC output voltage fluctuates seriously with external loads, and AC harmonics on the grid side forms electrical pollution to the outside. This paper proposes...
This paper presents the design of a multi-channel distributed monitoring platform, which is highly suitable to be applied into a traction supply system for urban railway transportation. In our platform are combined the technologies of Ethernet and virtual instrument, fully exerting their merits of large data capacity, high efficiency and low cost. With a HMI (Human Machine Interface) and a VO (Virtual...
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