Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail Transit
Braking energy can be fed back to the grid by the metro braking energy feedback converter using multiple power modules in parallel, but there are some problems such as circulating flow and harmonics. In this paper, a dual closed-loop control strategy based on carrier phase-shifting parallel mode was...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Control and Information Technology
2019-01-01
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| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2019.02.008 |
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| _version_ | 1849224821054898176 |
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| author | ZHANG Tiejun WANG Jianping HUANG Keyuan |
| author_facet | ZHANG Tiejun WANG Jianping HUANG Keyuan |
| author_sort | ZHANG Tiejun |
| collection | DOAJ |
| description | Braking energy can be fed back to the grid by the metro braking energy feedback converter using multiple power modules in parallel, but there are some problems such as circulating flow and harmonics. In this paper, a dual closed-loop control strategy based on carrier phase-shifting parallel mode was designed according to the operating conditions of multi-module parallel converters for urban rail transit energy feedback. Its outer loop is used to control the DC bus voltage and the inner loop is used to control power. The DC bus energy can be quickly feed back to the grid to improve the dynamic response speed of the converter. By adjusting the distribution time of zero-vector and improving the space vector modulation mode, the circulating flow between modules can be reduced and the capacity of converter can be improved. A pulse phase triggering method based on carrier phase shift was used to reduce the grid-connected harmonic current of the converter. Simulation results show that the proposed strategy has the advantages of fast dynamic response, low harmonic rate and small circulation, which meets the requirements of the parallel-converter for urban rail transit energy feedback. |
| format | Article |
| id | doaj-art-b178a5362bab4f24b26b14bd104247fb |
| institution | Kabale University |
| issn | 2096-5427 |
| language | zho |
| publishDate | 2019-01-01 |
| publisher | Editorial Office of Control and Information Technology |
| record_format | Article |
| series | Kongzhi Yu Xinxi Jishu |
| spelling | doaj-art-b178a5362bab4f24b26b14bd104247fb2025-08-25T06:54:12ZzhoEditorial Office of Control and Information TechnologyKongzhi Yu Xinxi Jishu2096-54272019-01-0136444882327029Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail TransitZHANG TiejunWANG JianpingHUANG KeyuanBraking energy can be fed back to the grid by the metro braking energy feedback converter using multiple power modules in parallel, but there are some problems such as circulating flow and harmonics. In this paper, a dual closed-loop control strategy based on carrier phase-shifting parallel mode was designed according to the operating conditions of multi-module parallel converters for urban rail transit energy feedback. Its outer loop is used to control the DC bus voltage and the inner loop is used to control power. The DC bus energy can be quickly feed back to the grid to improve the dynamic response speed of the converter. By adjusting the distribution time of zero-vector and improving the space vector modulation mode, the circulating flow between modules can be reduced and the capacity of converter can be improved. A pulse phase triggering method based on carrier phase shift was used to reduce the grid-connected harmonic current of the converter. Simulation results show that the proposed strategy has the advantages of fast dynamic response, low harmonic rate and small circulation, which meets the requirements of the parallel-converter for urban rail transit energy feedback.http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2019.02.008braking energy feedbackparallel convertercarrier phase shiftingdynamic zero vector modulation |
| spellingShingle | ZHANG Tiejun WANG Jianping HUANG Keyuan Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail Transit Kongzhi Yu Xinxi Jishu braking energy feedback parallel converter carrier phase shifting dynamic zero vector modulation |
| title | Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail Transit |
| title_full | Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail Transit |
| title_fullStr | Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail Transit |
| title_full_unstemmed | Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail Transit |
| title_short | Control Strategy of Parallel Converter for Braking Energy Feedback of Urban Rail Transit |
| title_sort | control strategy of parallel converter for braking energy feedback of urban rail transit |
| topic | braking energy feedback parallel converter carrier phase shifting dynamic zero vector modulation |
| url | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2019.02.008 |
| work_keys_str_mv | AT zhangtiejun controlstrategyofparallelconverterforbrakingenergyfeedbackofurbanrailtransit AT wangjianping controlstrategyofparallelconverterforbrakingenergyfeedbackofurbanrailtransit AT huangkeyuan controlstrategyofparallelconverterforbrakingenergyfeedbackofurbanrailtransit |