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Chapter and Conference Paper
An Online Monitoring Scheme for Circuit Breakers Contact System
In recent years, the prognostic and health management (PHM) technology has been effectively developed as a key technology for the intelligent development of power grids. The online monitoring system for circui...
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Chapter and Conference Paper
Research on a Secondary Pulsation Active Power Filter for Single-Phase PWM Rectifier
The single-phase PWM rectifier has a second harmonic current and a corresponding ripple voltage on the DC side. The low-frequency harmonic current is usually eliminated by a resonant circuit composed of a larg...
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Chapter and Conference Paper
Design and Implementation of Simulation Software of DC Traction Power Supply System for Urban Rail Transportation
For the power flow calculation of the DC side traction power supply system for urban rail transportation, the DC traction calculation is carried out first of all, then the mathematical model of each part of th...
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Chapter and Conference Paper
Design of PCI Bus High-Speed Data Acquisition System Based on FPGA
PCI bus is a standard bus of the computer. It adopts European standard and has the advantages of plug and play, interrupt sharing, high-speed transmission, and safety fastening. However, the PCI communication ...
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Chapter and Conference Paper
Cloud Computing System of Rail Transit Traction System and Data Collection
With the sustained and rapid growth of the national economy, the demand for urban rail transit is increasing, and the requirements for the operation reliability of the traction power supply system are becoming...
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Chapter and Conference Paper
Parallel Control of Auxiliary Inverter Based on Virtual Synchronous Generator
As an important part of electric multiple units (EMU), the auxiliary power supply system plays an important role in the normal operation of the vehicle. In order to improve the reliability of the auxiliary pow...
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Chapter and Conference Paper
Double-Loop Control Strategy for Buck/Boost-CLLLC Two-Stage Bidirectional DC/DC Converter
This paper adopts Buck/Boost and CLLLC cascade topology. Buck/Boost-CLLLC two-stage bidirectional DC/DC converter topology and its control strategy are suitable for medium and high-power applications with larg...
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Chapter and Conference Paper
Research on Active Power Factor Correction Technology
Current harmonic seriously endangers the safety of power facilities and power grid. Power factor correction (PFC) technology can effectively solve the problem of harmonic pollution. In this paper, the working ...
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Chapter and Conference Paper
Design of Control Unit of Traction System Based on CPCI Bus
With the development of high-speed railway, it is necessary to design a traction control system with high performance, high stability, and high system integration. The CPCI bus is widely used in industrial aut...
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Chapter and Conference Paper
Research on Reactive Power Optimization Scheme of Metro Medium Voltage Power Supply Network Based on the Medium Voltage Energy Feeding Device
The metro power supply system has a low power factor during low load rate operation. In order to save the investment of reactive compensation devices and compensate the reactive power for the metro medium volt...
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Chapter and Conference Paper
Rotor Broken Bar Fault Diagnosis for Induction Traction Motor Considering Low Load Condition
Rotor broken bar fault accounts for more than 5% in induction motor faults. The frequencies (1 ± 2s)f1 in motor current are recognized as the fault characteristics to detect the fault. However, when the traction ...