PWM rectifier LCL filter design for underground mine
-
摘要: 应用于刮板输送机、采煤机等机械设备的双PWM变频调速系统需在整流器网侧设置滤波器以抑制谐波电流。现有的LCL滤波器设计方法依赖经验,效率较低,且对阻尼损耗问题考虑不足,易导致器件发热,不适于井下应用。通过分析双PWM变频调速系统整流器的LCL滤波器模型,推导了电感比、阻尼电阻与电流衰减系数、谐振频率、阻尼损耗之间的数学关系,进而提出了适用于煤矿井下的PWM整流器LCL滤波器设计方法,即:在考虑滤波效果、电流快速跟踪能力、系统快速响应能力基础上,为减小整流器体积,应选取较小的总电感;在保证滤波效果前提下,尽量增大滤波电容;在允许的电流总谐波畸变率范围内,尽量选取电感比和阻尼电阻最小值。在Matlab/Simulink中搭建三相电压型PWM整流器控制模型进行仿真验证,结果表明采用该方法设计的LCL滤波器可使PWM整流器具有很小的超调量、快速的响应能力、较低的电流总谐波畸变率;通过样机实验验证了LCL滤波器能较好地抑制PWM整流器网侧电流,提高并网电流波形质量;通过对比验证了该方法设计的滤波电感和阻尼电阻均明显小于传统方法设计值,可有效减小滤波器体积,降低成本。Abstract: The dual PWM variable frequency speed regulation system applied to scraper conveyors, coal shearers and other mechanical equipments needs to be installed a filter on the rectifier grid-side to suppress harmonic currents. The existing LCL filter design method relies on experience and has low efficiency, and the damping loss problem is not considered enough. It is easy to cause device heating and the design is not suitable for underground applications. By analyzing the LCL filter model of the rectifier of the double PWM variable frequency speed regulation system, the mathematical relationship among the inductance ratio, damping resistance and current attenuation coefficient, resonance frequency, and damping loss is derived, and then a PWM rectifier LCL filter design method suitable for underground coal mines is proposed. In order to reduce the volume of the rectifier, a smaller total inductance should be selected on the basis of considering the filtering effect, the current fast tracking ability, and the fast response ability of the system. On the premise of ensuring the filtering effect, it is suggested to increase the filter capacitance. Within the allowable range of total harmonic distortion rate of the current, it is proposed to select the minimum value of inductance ratio and damping resistance. A three-phase voltage PWM rectifier control model is built in Matlab/Simulink for simulation and verification. The results show that the LCL filter designed by this method can make the PWM rectifier have a small overshoot, fast response and low total harmonic distortion rate. The prototype experiment verifies that the LCL filter can better suppress the grid-side current of the PWM rectifier and improve the quality of the grid-connected current waveform. It is verified by comparison that the filter inductance and damping resistance designed by this method are significantly smaller than those designed by the traditional method, which can reduce the size of the filter and reduce the cost effectively.
-
-
期刊类型引用(21)
1. 赵冬. 基于机器视觉的煤矿井下火灾检测方法. 自动化应用. 2025(01): 101-104+107 . 百度学术
2. 孙继平,李小伟. 基于图像顺滑度的矿井外因火灾识别及抗干扰方法研究. 中国矿业大学学报. 2025(01): 215-226 . 百度学术
3. 耿哲,张德胜. 煤矿井下区域防灭火系统的设计. 矿山机械. 2025(03): 50-55 . 百度学术
4. 孙继平,李小伟. 矿井外因火灾图像凹陷度识别方法. 煤炭科学技术. 2025(01): 341-355 . 百度学术
5. 王炎林,裴晓东,王凯,徐光. 基于双光谱成像技术的矿井早期火源识别及抗干扰方法研究. 工矿自动化. 2025(03): 122-130 . 本站查看
6. 胡纪年,李雨成,李俊桥,张巍. 基于CNN的矿井外因火灾火源定位方法研究. 中国安全生产科学技术. 2024(03): 134-140 . 百度学术
7. 李海龙. 基于机器视觉的煤矿用输送带跑偏检测方法. 矿山机械. 2024(05): 29-33 . 百度学术
8. 徐晓敏,朱正磊,刘鑫,郭青玄,赵一夫. 基于无人机监测的电力火灾起火点定位方法研究. 电力大数据. 2024(03): 50-56 . 百度学术
9. 孙继平,李小伟. 基于图像内凹度的矿井外因火灾识别及抗干扰方法. 煤炭学报. 2024(07): 3253-3264 . 百度学术
10. 于博,陈光波. 基于组合赋权-物元可拓模型的煤矿内因火灾安全评价. 煤矿安全. 2023(02): 61-70 . 百度学术
11. 李光宇,李守军,缪燕子. 基于机器视觉和灰色模型的矿井外因火灾辨识与定位方法. 矿业安全与环保. 2023(02): 82-87 . 百度学术
12. 程开. 选煤厂机械搅拌式浮选机智能控制系统的研究. 煤炭加工与综合利用. 2023(06): 6-12 . 百度学术
13. 孙继平,程继杰. 煤矿冲击地压和煤与瓦斯突出感知报警方法研究. 工矿自动化. 2022(01): 1-6 . 本站查看
14. 郭玉柱. 斜沟煤矿火灾应急隔离系统设计研究. 煤. 2022(02): 13-16+29 . 百度学术
15. 范涌高,周怡敏,张玉玺,闫宋锟,朱丽娜. 井下复合定位系统框架. 计算机测量与控制. 2022(02): 201-206 . 百度学术
16. 孙继平,范伟强. MS-ADoG域结合ReNLU与VGG-16的矿井双波段图像融合算法. 光子学报. 2022(03): 1-15 . 百度学术
17. 孙继平,李小伟,徐旭,张森森. 矿井电火花及热动力灾害紫外图像感知方法研究. 工矿自动化. 2022(04): 1-4+95 . 本站查看
18. 王勇,胡斌,康渴楠,孔庆东,葛小菡,李辰阳. 智能传感器在消防装备中的应用现状分析. 中国安全科学学报. 2022(S1): 184-188 . 百度学术
19. 高懿伟,郭志国,张俊,郑彪华. 我国金属矿山热动力灾害防治技术研究现状与展望. 金属矿山. 2022(12): 196-204 . 百度学术
20. 肖国强,范新丽,马砺,骆伟,吴明明. 矿井火灾环境信息动态感知与应急隔离系统. 工矿自动化. 2021(09): 65-69 . 本站查看
21. 刘彦武. 基于智能通风的火灾和瓦斯突出灾变管控系统探讨. 山西焦煤科技. 2021(08): 47-52 . 百度学术
其他类型引用(11)
计量
- 文章访问数: 175
- HTML全文浏览量: 29
- PDF下载量: 19
- 被引次数: 32