19 Result(s)
within
Transportation Technology and Traffic Engineering
Jie CHEN
Conference Paper
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Chapter and Conference Paper
Parameters Offline Identification of Induction Motor in High-Power Converter System
Currently the induction motor control system uses vector control widely. If the motor parameters adopted in vector control algorithm do not match with the actual motor parameters, there will be a significant i...
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Chapter and Conference Paper
Research on Unbalanced Load Suppression Method of Auxiliary Inverter
This paper focuses on how to suppress the effect of unbalanced load on the output voltage distortion of the auxiliary inverter. The auxiliary inverter in this paper uses a split-capacitor inverter topology wit...
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Chapter and Conference Paper
Comparison of Harmonics Between SVPWM and SHEPWM
The traction system of rail transit has the characteristics of low switching frequency and wide speed range, and generally adopts “asynchronous modulation + synchronous modulation + square wave” full-speed ran...
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Chapter and Conference Paper
Research on Construction Method of “Train-Traction Network” Harmonic Model for High-Speed Railway
Network-side converter of high-speed train produces high harmonics in the modulation process, which are injected into traction network in the course of the operation which may cause resonance. In order to anal...
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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
Situation Awareness Assessment for Ship Navigation Tasks in Virtual Reality Simulation System
This paper discusses whether the ergonomic assessment of the man-machine interface of the ship console in virtual reality simulation system can achieve the effect similar to that in physical simulation system....
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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 ...
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Chapter and Conference Paper
Study on Design and Application of Ultra-Thin Cover for Noise Reduction and Skid Resistance of Old Cement Concrete Pavement
According to the comparative analysis from the whole life cycle economic cost accounting, the capital investment of preventive maintenance of old cement concrete pavement is less than that of corrective mainte...
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Chapter and Conference Paper
Modeling of Hybrid EMUs and Rule-Based Energy Management Strategy
In recent years, railway transportation has developed rapidly, and in order to cope with sustainable development, hybrid power systems (HPS) are applied in rail transportation to achieve energy saving and envi...
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Chapter and Conference Paper
Research on Optimal Power Flow Control Strategy for Urban Rail Flexible Traction Power Supply System
In order to solve the problems of uncontrollable DC voltage and low utilization of regenerative braking energy in traditional traction power supply system, a bi-directional converter is used instead of diode r...
