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Research and Realization on Convertor Control Arithmetic of High-Spped EMU at Traction State

Author: LiGuanJun
Tutor: FengXiaoYun
School: Southwest Jiaotong University
Course: Power Electronics and Power Drives
Keywords: Single-phase three - level rectifier Transient direct current control The three-level inverter Indirect rotor field oriented control Constant speed control Automatically over split-phase
CLC: TM46
Type: Master's thesis
Year: 2008
Downloads: 559
Quote: 9
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Abstract


The paper is based on subject \Thesis work for high-speed EMU traction conditions , traction converter working principle , control strategy and control algorithm research , simulation and control algorithm . Man in the simulation model is built in accordance with the high-speed EMU transmission system , including its main circuit traction transformers, single-phase three - level rectifier intermediate DC link , the three -level inverter , three-phase asynchronous traction motors . The single-phase three - level rectifier SPWM modulation , transient direct current control strategy ; three - level inverter SVPWM modulation indirect rotor field oriented control strategy . Regulation characteristics , according to the motor and motor traction characteristics curve design . Strategy of constant speed control , automatic over split-phase strategy carried out a detailed study , by Matlab / Simulink simulation control strategy . From the simulation results , the EMU in traction , constant speed , coasting state run rectifier output DC voltage fluctuations , high line power factor , has a good dynamic and static performance ; traction when the traction motor output The good track torque torque instruction EMU run low-speed zone running constant torque , high-speed according to the constant power operation ; EMU state of constant speed control , stable operation to speed instruction ; workers in different conversion of the conditions , smooth control of the instruction to prevent the motor torque greater volatility . The simulation results show that the proposed traction system control strategy is feasible . Finally , independent structures based the double DSP (TMS320LF2407 TMS320VC33) , three - level inverter hardware platforms , and the space voltage vector experiment , the experimental results show that this article three level space voltage vector algorithm is feasible .

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter
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