DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyor
The underground belt conveyor at Pingdingshan Tian'an Coal Mining No. 9 Co., Ltd. uses a drive system consisting of an asynchronous motor, hydraulic coupling, and reduction gears. This system exhibits issues such as low transmission efficiency, lengthy transmission chain, and poor speed regulat...
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Editorial Department of Industry and Mine Automation
2024-12-01
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| Series: | Gong-kuang zidonghua |
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| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2024060040 |
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| author | LIU Peng ZHANG Lei BAO Jiusheng CHEN Huaxin WEI Chunji MA Chuanming WANG Lei WANG Xiaolong |
| author_facet | LIU Peng ZHANG Lei BAO Jiusheng CHEN Huaxin WEI Chunji MA Chuanming WANG Lei WANG Xiaolong |
| author_sort | LIU Peng |
| collection | DOAJ |
| description | The underground belt conveyor at Pingdingshan Tian'an Coal Mining No. 9 Co., Ltd. uses a drive system consisting of an asynchronous motor, hydraulic coupling, and reduction gears. This system exhibits issues such as low transmission efficiency, lengthy transmission chain, and poor speed regulation performance. To address these limitations, the drive system was retrofitted with a 2×400 kW switched reluctance motor semi-direct drive(SRSD) system utilizing a switched reluctance motor(SRM) for the belt conveyor. A BP neural network was used to predict the flux linkage and torque of the SRM, and a highly accurate SRM nonlinear model was developed based on the predictions. By combining the torque variation patterns of the SRM in the commutation zone and the PWM control principles, an improved direct instantaneous torque control(DITC) strategy was proposed. Torque error was used as the input, and PWM control was applied to phase currents within the torque error threshold in this strategy. Simulations under no-load and variable load conditions of the belt conveyor were conducted. The results showed that the improved DITC strategy significantly reduced the torque ripple of SRM compared to the traditional DITC strategy, with a maximum reduction of 39.1%, thereby improving the operational stability of the SRSD system for the belt conveyor. Based on the key structural parameters of the SRM and the improved DITC strategy, the SRSD system for belt conveyors was developed and tested in an underground coal mine. The results showed that the SRSD system enabled smooth full-load startup, demonstrated excellent dynamic performance, and reduced power consumption by 24% compared to the original drive system. |
| format | Article |
| id | doaj-art-6ef06a65dcc4419f891fae6acf5bae77 |
| institution | Kabale University |
| issn | 1671-251X |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Department of Industry and Mine Automation |
| record_format | Article |
| series | Gong-kuang zidonghua |
| spelling | doaj-art-6ef06a65dcc4419f891fae6acf5bae772025-01-23T02:17:45ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2024-12-01501293102, 12710.13272/j.issn.1671-251x.2024060040DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyorLIU Peng0ZHANG Lei1BAO Jiusheng2CHEN Huaxin3WEI Chunji4MA Chuanming5WANG Lei6WANG Xiaolong7Pingdingshan Tian′an Coal Industry Co., Ltd., Pingdingshan 467099, ChinaSchool of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaPingdingshan Tian′an Coal Industry Co., Ltd., Pingdingshan 467099, ChinaSchool of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaThe underground belt conveyor at Pingdingshan Tian'an Coal Mining No. 9 Co., Ltd. uses a drive system consisting of an asynchronous motor, hydraulic coupling, and reduction gears. This system exhibits issues such as low transmission efficiency, lengthy transmission chain, and poor speed regulation performance. To address these limitations, the drive system was retrofitted with a 2×400 kW switched reluctance motor semi-direct drive(SRSD) system utilizing a switched reluctance motor(SRM) for the belt conveyor. A BP neural network was used to predict the flux linkage and torque of the SRM, and a highly accurate SRM nonlinear model was developed based on the predictions. By combining the torque variation patterns of the SRM in the commutation zone and the PWM control principles, an improved direct instantaneous torque control(DITC) strategy was proposed. Torque error was used as the input, and PWM control was applied to phase currents within the torque error threshold in this strategy. Simulations under no-load and variable load conditions of the belt conveyor were conducted. The results showed that the improved DITC strategy significantly reduced the torque ripple of SRM compared to the traditional DITC strategy, with a maximum reduction of 39.1%, thereby improving the operational stability of the SRSD system for the belt conveyor. Based on the key structural parameters of the SRM and the improved DITC strategy, the SRSD system for belt conveyors was developed and tested in an underground coal mine. The results showed that the SRSD system enabled smooth full-load startup, demonstrated excellent dynamic performance, and reduced power consumption by 24% compared to the original drive system.http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2024060040belt conveyorswitched reluctance motorsemi-direct drive systemdirect instantaneous torque controlmotor torque ripple suppression |
| spellingShingle | LIU Peng ZHANG Lei BAO Jiusheng CHEN Huaxin WEI Chunji MA Chuanming WANG Lei WANG Xiaolong DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyor Gong-kuang zidonghua belt conveyor switched reluctance motor semi-direct drive system direct instantaneous torque control motor torque ripple suppression |
| title | DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyor |
| title_full | DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyor |
| title_fullStr | DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyor |
| title_full_unstemmed | DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyor |
| title_short | DITC control strategy for semi-direct drive system with switched reluctance motor in coal mine belt conveyor |
| title_sort | ditc control strategy for semi direct drive system with switched reluctance motor in coal mine belt conveyor |
| topic | belt conveyor switched reluctance motor semi-direct drive system direct instantaneous torque control motor torque ripple suppression |
| url | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2024060040 |
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