| 引用本文: | 涂春鸣,龙柳,肖标,余雪萍,柴鸣.中点箝位型三电平变换器系统安全工作区的刻画及应用[J].电力自动化设备,2019,39(12): |
| TU Chunming,LONG Liu,XIAO Biao,YU Xueping,CHAI Ming.Description and application of SSOA of neutral-point-clamped three-level converter[J].Electric Power Automation Equipment,2019,39(12): |
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| 摘要: |
| 为了提高中点箝位型三电平变换器的可靠性，基于器件的安全工作区，综合考虑了变换器的拓扑结构、直流母线杂散参数、控制系统的延迟以及温度等因素，推导出了变换器系统安全工作区(SSOA)的数学模型。定量分析了结温和风速对SSOA边界的影响，并分别刻画了结温和风速影响下SSOA的三维立体图形。应用该方法对55 kW/380 V的变换器样机进行保护设计，通过实验验证了基于SSOA所设定的保护边界的有效性，表明SSOA可以保障变换器的可靠稳定运行，提高变换器的可持续运行能力。 |
| 关键词: 中点箝位型三电平变换器 系统安全工作区 数学模型 结温 风速 保护设计 |
| DOI：10.16081/j.epae.201911007 |
| 分类号:TM46 |
| 基金项目:南方电网公司科技项目(ZBKJXM20180211) |
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| Description and application of SSOA of neutral-point-clamped three-level converter |
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TU Chunming, LONG Liu, XIAO Biao, YU Xueping, CHAI Ming
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National Electric Power Conversion Control Engineering Technology Research Center, Hunan University, Changsha 410082, China
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| Abstract: |
| In order to improve the reliability of the neutral-point-clamped three-level converter, based on the safe operating area of device, the mathematical model of the SSOA(Systematic Safe Operating Area) of converter is deduced with considering the converter topology, the stray parameters of DC bus, the delay of the control system, the temperature and other factors. The influence of junction temperature and wind speed on the SSOA boundary is analyzed quantitatively, and the corresponding three-dimensional graphics of the SSOA are depicted respectively. The proposed method is applied to the protection design of 55 kW/380 V converter prototype, and the experimental results validate the effectiveness of the protection boundary set based on SSOA, which show that the SSOA can guarantee the reliable and stable operation of the converter and improve the sustainable operation ability of the converter. |
| Key words: neutral-point-clamped three-level converter SSOA mathematical models junction temperature wind speed protection design |
