| 一种应用于动车组牵引变流器控制的变压器直流偏磁抑制方法 |
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| 引用本文： | 李康乐,李学亮,李雪珍.一种应用于动车组牵引变流器控制的变压器直流偏磁抑制方法[J].电机与控制应用,2020,47(9):39-43，50. |
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| 作者姓名： | 李康乐 李学亮 李雪珍 |
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| 作者单位： | 1.西安中车永电捷通电气有限公司，陕西 西安710016;2.特变电工西安电气科技有限公司，陕西 西安710119;3.中车永济电机有限公司，陕西 西安710018 |
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| 摘 要： | 动车组(EMU)牵引供电系统采用25 kV单相牵引变压器从接触网取电,EMU运行过程中的弓网离线、功率器件的非线性特性、硬件电路和控制系统的不对称性等,均会引起直流分量通过电气回路注入车载牵引变压器,引起变压器的直流偏磁。通过将比例-积分-谐振(PIR)控制应用于电流内环控制器,同时实现正弦信号的稳定跟踪和直流分量的抑制。仿真和硬件在环的半实物仿真结果验证了该控制策略的有效性。
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| 关 键 词： | 牵引变压器 动车组 直流偏磁抑制 比例 积分 谐振控制 弓网离线 |
| 收稿时间： | 2020/4/2 0:00:00 |
| 修稿时间： | 2020/6/15 0:00:00 |
A Suppression Method of Transformer DC Magnetic Bias Used for EMU Traction Converter Control |
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| LI Kangle,LI Xueliang,LI Xuezhen.A Suppression Method of Transformer DC Magnetic Bias Used for EMU Traction Converter Control[J].Electric Machines & Control Application,2020,47(9):39-43，50. |
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| Authors: | LI Kangle LI Xueliang LI Xuezhen |
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| Abstract: | The traction power supply system of electric multiple unit (EMU) adopts 25 kV single phase transformer to draw power from the traction catenary. The disconnection of pantograph catenary during the locomotive running operation, nonlinear characteristics of power devices, and the asymmetry of hardware circuit and control system can all cause the DC components to inject into the vehicle traction transformer through the electrical circuit, and result in the DC magnetic bias of transformer. By applying the proportional integral resonance (PIR) control to the current inner loop controller, the stable track of the sinusoidal signal and the suppression of the DC components are realized. The simulation and the hardware in the loop simulation results show the effectiveness of the control strategy. |
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| Keywords: | traction transformer electric multiple unit (EMU) DC magnetic bias suppression proportional integral resonance (PIR) control pantograph catenary disconnection |
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