A5101403336- Railway Systems and Energy Efficiency
- Power Systems and Technologies
- Electrical Contact Performance and Analysis
- Railway Engineering and Dynamics
- Lightning and Electromagnetic Phenomena
- High-Voltage Power Transmission Systems
- Electric Motor Design and Analysis
- HVDC Systems and Fault Protection
- Sensorless Control of Electric Motors
- Geoscience and Mining Technology
- Advanced Computational Techniques and Applications
- Electric and Hybrid Vehicle Technologies
- Thermal Analysis in Power Transmission
- Multilevel Inverters and Converters
- Advanced Battery Technologies Research
- Magnetic Bearings and Levitation Dynamics
- Smart Grid and Power Systems
Southwest Jiaotong University
2007-2025
Abstract To recycle regenerative braking energy (RBE) while reducing demand charge in electrified railway, a co‐phase power supply system with hybrid storage (HESS) is implemented. However, the dynamical degradation characteristic of battery necessary to be considered optimal operation HESS. A bi‐level model considering proposed obtain sizing and The includes novel real‐time management strategy (EMS) using average as thresholds, effectively reduce consumption charge. Thresholds are...
The existing simulation of rail potential only considers the equivalent DC resistance and 1st-order RL circuit a rail. However, current contains large number harmonic components, which greatly affects calculation potential. To accurately calculate potential, is to tubular conductor considering skin effect. improved reflux system established by vector fitting method (VF), 8th-order foster built. dynamic model multi-trains, multi-stations, over voltage protection device (OVPD) actions...
The DC magnetic bias phenomenon in transformers can result increased noise and harmonic components. This study focuses on the generated by stray currents traction power supply system of neutral grounding under multiple train operation conditions. A two-layer soil model is utilized to calculate geodetic potential, with rail potentials from both mainline depot serving as sources for current within model. Two paths intrusion into transformer via network cable armor layer Main substation have...
Abstract In dual traction power supply systems, the overhead catenary system operates in different modes. It passes across AC section, DC and a neutral part, which influences features properties of feedback current aggregates its effects on stray rail potential. This research paper presents an integrated model (TPS), along with unified chain equivalent circuit model, ground wire through insulation joints fixed AC–DC section under operating positions. To make impedance admittance matrix for...
Electric Vehicle (EV) is a dream for the human being city traffic without exhausting gas and with low noise. Permanent magnet synchronous motor (PMSW) became at top of AC motors in high performance drive systems such as EV. This paper describes full digital system to control PMSM used EV driving by TMS320F2812 DSP. Based on analysis mathematical model PMSM, constant torque flux-weakening electric vehicle are realized. The will be tested under various operating conditions. Experimental...
The onboard braking resistance (OBR) is widely installed on urban rail trains. general trend to cancel OBR in rail, due the low efficiency of using regenerative energy. design Energy feedback systems (EFSs) after canceling important because EFSs need balance energy-saving effects and network voltage safety. Besides, pneumatic may increase, so brake shoe life needs be further studied. In this paper, electro-pneumatic wear models are first built. Then power supply calculation algorithm...
The features of three modes AT-fed traction power networks (TPNs) have been briefly described in the existing literature, which is not adequate yet.In this paper, these TPNs are compared mainly on TPN capacity, transformer rail potential and voltage level, etc., conclusions drawn.
The DC magnetic bias phenomenon in transformers can result increased noise and harmonic components. This study focuses on the generated by stray currents traction power supply system of neutral grounding under multiple train operation conditions. A two-layer soil model is utilized to calculate geodetic potential, with rail potentials from both mainline depot serving as sources for current within model. Two paths intrusion into transformer via network cable armor layer main substation have...
The YNvd transformer, which is one kind of three-phase three-winding balance transformer and has several properties, can be used in traction power supply system electric railway. strict relation the primary secondary transformation derived with impedance matching coefficient. grounding conditions for transformer's neutral point characteristics negative phase-sequence are analyzed. equivalent models comprehensive compensator filter presented unified related analyses. Finally, calculation...
This paper discusses the relationship between amplitude of stator flux linkage and torque interior permanent magnet synchronous motor (IPMSM). In order to change load angle accordingly, should be kept in restricted range. It also explains how control get maximum by using direct (DTC) under base speed, which improves efficiency whole system. Simulation results have been presented good performance has achieved.
To improve the accuracy of fault location system, several short-circuit tests need to be conducted before being brought into service in autotransformer (AT) feeding systems for high-speed railways China. However, no systematic algorithm yet exists evaluate consistency current distribution tests. A methodology is proposed this paper address problem. Based on Kirchhoff’s law and generalized method symmetrical components, deviations AT are analysed then normalized with as they vary greatly...