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针对城市轨道车辆电气系统中IGBT模块受复杂环境和列车运行工况影响、结温波动较大的问题，提出一种IGBT模块主动热控制方法，以延长其运行寿命。首先，建立基于零序分量的数字化统一调制策略模型；其次，通过改进调制策略，提出IGBT模块主动热控制方案：在不同开关区域叠加两种不同调制策略的零序电压，在箝位区采用DPWM零序电压，降低开关频率并减小热损耗；在非箝位区采用SVPWM零序电压，保障良好的电流质量。通过电热耦合仿真验证所提方法的性能，结果表明：相较于SVPWM策略，改进调制策略可有效降低功率损耗，提高输出电流波形质量；固定任务剖面下的仿真试验进一步证实，该方法可显著平缓IGBT模块结温波动。研究可为提高城市轨道车辆IGBT模块的运行可靠性提供可行的技术参考。
Abstract：Aiming at the problem of large fluctuations in the junction temperature of IGBT modules in the electrical system of urban rail vehicles due to complex environments and train operation conditions, an active thermal control method for IGBT modules is proposed to extend their operating life. Firstly, a digital unified modulation strategy model based on zero-sequence components is established. Secondly, by improving the modulation strategy, an active thermal control scheme for IGBT modules is proposed: in different switching regions,two different modulation strategies' zero-sequence voltages are superimposed. In the clamping region, DPWM zero-sequence voltage is adopted to reduce the switching frequency and thermal loss; in the non-clamping region, SVPWM zero-sequence voltage is used to ensure good current quality. The performance of the proposed method is verified through electro-thermal coupling simulation. The results show that compared with the SVPWM strategy, the improved modulation strategy can effectively reduce power loss and optimize the quality of the output current waveform. Simulation experiments under a fixed task profile further confirm that this method can significantly smooth the junction temperature fluctuations of IGBT modules. The research can provide a feasible technical reference for improving the operational reliability of IGBT modules in urban rail vehicles.
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基本信息:
DOI：10.13291/j.cnki.djdxac.2026.04.019
中图分类号:U270.381
引用信息:
[1]宫琦,余泳乐,邹志超.基于改进调制策略的IGBT模块主动热控制方法[J].大连交通大学学报().DOI:10.13291/j.cnki.djdxac.2026.04.019.
2026-08-17
2026-08-17
2026-08-17