Passive Circulation Suppression Strategy of MMC Converter in New TPSS
In order to solve the problems of excessive power and low power quality in traction power supply system (TPSS) of electrified railway, a new TPSS was introduced. Modular multilevel converter (MMC) was used to construct a DC grid between the grid and the contact network, which would generate interpha...
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Editorial Department of Electric Drive for Locomotives
2018-01-01
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| Series: | 机车电传动 |
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| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2018.01.100 |
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| author | SONG Pinggang DONG Hui ZHOU Zhenbang WU Jizhen SUN Nannan |
| author_facet | SONG Pinggang DONG Hui ZHOU Zhenbang WU Jizhen SUN Nannan |
| author_sort | SONG Pinggang |
| collection | DOAJ |
| description | In order to solve the problems of excessive power and low power quality in traction power supply system (TPSS) of electrified railway, a new TPSS was introduced. Modular multilevel converter (MMC) was used to construct a DC grid between the grid and the contact network, which would generate interphase circulation because of the voltage difference between MMC bridge arms, affecting the system operation. From the viewpoint of energy control, this paper proposed a passive suppression strategy. The EL model of interphase circulation was established in dq coordinate system. The passivity of circulation was proved by passive control theory. The appropriate passivity control law was selected to make the system energy actual value converge quickly to the expected value by using the method of injecting damping. Three phase single-phase traction power supply system model was built on the PSCAD/EMTDC simulation platform. The results showed that energy was controlled by changing the number of sub modules in the input state, the sum of the upper and lower arm voltages approached the DC voltage to achieve the purpose of suppressing circulation. |
| format | Article |
| id | doaj-art-adf25e4b9a1449a8bbcb9b9f9990d83a |
| institution | Kabale University |
| issn | 1000-128X |
| language | zho |
| publishDate | 2018-01-01 |
| publisher | Editorial Department of Electric Drive for Locomotives |
| record_format | Article |
| series | 机车电传动 |
| spelling | doaj-art-adf25e4b9a1449a8bbcb9b9f9990d83a2025-08-20T03:48:58ZzhoEditorial Department of Electric Drive for Locomotives机车电传动1000-128X2018-01-013320912132Passive Circulation Suppression Strategy of MMC Converter in New TPSSSONG PinggangDONG HuiZHOU ZhenbangWU JizhenSUN NannanIn order to solve the problems of excessive power and low power quality in traction power supply system (TPSS) of electrified railway, a new TPSS was introduced. Modular multilevel converter (MMC) was used to construct a DC grid between the grid and the contact network, which would generate interphase circulation because of the voltage difference between MMC bridge arms, affecting the system operation. From the viewpoint of energy control, this paper proposed a passive suppression strategy. The EL model of interphase circulation was established in dq coordinate system. The passivity of circulation was proved by passive control theory. The appropriate passivity control law was selected to make the system energy actual value converge quickly to the expected value by using the method of injecting damping. Three phase single-phase traction power supply system model was built on the PSCAD/EMTDC simulation platform. The results showed that energy was controlled by changing the number of sub modules in the input state, the sum of the upper and lower arm voltages approached the DC voltage to achieve the purpose of suppressing circulation.http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2018.01.100traction power supply systemmodular multilevel converterinterphase currentenergy controlpassivity control theory |
| spellingShingle | SONG Pinggang DONG Hui ZHOU Zhenbang WU Jizhen SUN Nannan Passive Circulation Suppression Strategy of MMC Converter in New TPSS 机车电传动 traction power supply system modular multilevel converter interphase current energy control passivity control theory |
| title | Passive Circulation Suppression Strategy of MMC Converter in New TPSS |
| title_full | Passive Circulation Suppression Strategy of MMC Converter in New TPSS |
| title_fullStr | Passive Circulation Suppression Strategy of MMC Converter in New TPSS |
| title_full_unstemmed | Passive Circulation Suppression Strategy of MMC Converter in New TPSS |
| title_short | Passive Circulation Suppression Strategy of MMC Converter in New TPSS |
| title_sort | passive circulation suppression strategy of mmc converter in new tpss |
| topic | traction power supply system modular multilevel converter interphase current energy control passivity control theory |
| url | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2018.01.100 |
| work_keys_str_mv | AT songpinggang passivecirculationsuppressionstrategyofmmcconverterinnewtpss AT donghui passivecirculationsuppressionstrategyofmmcconverterinnewtpss AT zhouzhenbang passivecirculationsuppressionstrategyofmmcconverterinnewtpss AT wujizhen passivecirculationsuppressionstrategyofmmcconverterinnewtpss AT sunnannan passivecirculationsuppressionstrategyofmmcconverterinnewtpss |