Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault
Abstract Cascaded H‐bridge inverter (CHBI) is widely used in the industry application for its outstanding features. However, CHBI needs a large number of isolated DC sources. If some of the DC sources are out of work, the DC voltage cannot maintain the desired value and even decreases to zero, thus...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-04-01
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| Series: | IET Generation, Transmission & Distribution |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/gtd2.12105 |
| _version_ | 1798035577260474368 |
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| author | Jinfei Xiong Fulin Zhou Qunzhan Li |
| author_facet | Jinfei Xiong Fulin Zhou Qunzhan Li |
| author_sort | Jinfei Xiong |
| collection | DOAJ |
| description | Abstract Cascaded H‐bridge inverter (CHBI) is widely used in the industry application for its outstanding features. However, CHBI needs a large number of isolated DC sources. If some of the DC sources are out of work, the DC voltage cannot maintain the desired value and even decreases to zero, thus degrading the quality of the output voltage of the CHBI. Thus, a soft‐switching modulation strategy based on the carrier phase shift SPWM is proposed in this paper to cope with the DC source failure. The strategy is proposed to achieve two goals: 1) one is to adjust the DC voltage of faulty cells back to the normal; 2) the other one is to make the pulse width modulation (PWM) pulses of each cell change without cell voltage level‐skip. The correction and efficiency are verified by a prototype of three‐cell CHBI built in the laboratory. |
| first_indexed | 2024-04-11T20:59:02Z |
| format | Article |
| id | doaj.art-4eb92aa5cd9f46e58dcc8c165ba2d658 |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-11T20:59:02Z |
| publishDate | 2021-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-4eb92aa5cd9f46e58dcc8c165ba2d6582022-12-22T04:03:33ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952021-04-011581337134710.1049/gtd2.12105Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source faultJinfei Xiong0Fulin Zhou1Qunzhan Li2School of Electrical Engineering Southwest Jiaotong University Chengdu People's Republic of ChinaSchool of Electrical Engineering Southwest Jiaotong University Chengdu People's Republic of ChinaSchool of Electrical Engineering Southwest Jiaotong University Chengdu People's Republic of ChinaAbstract Cascaded H‐bridge inverter (CHBI) is widely used in the industry application for its outstanding features. However, CHBI needs a large number of isolated DC sources. If some of the DC sources are out of work, the DC voltage cannot maintain the desired value and even decreases to zero, thus degrading the quality of the output voltage of the CHBI. Thus, a soft‐switching modulation strategy based on the carrier phase shift SPWM is proposed in this paper to cope with the DC source failure. The strategy is proposed to achieve two goals: 1) one is to adjust the DC voltage of faulty cells back to the normal; 2) the other one is to make the pulse width modulation (PWM) pulses of each cell change without cell voltage level‐skip. The correction and efficiency are verified by a prototype of three‐cell CHBI built in the laboratory.https://doi.org/10.1049/gtd2.12105Power electronics, supply and supervisory circuitsPower convertors and power supplies to apparatusVoltage controlControl of electric power systems |
| spellingShingle | Jinfei Xiong Fulin Zhou Qunzhan Li Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault IET Generation, Transmission & Distribution Power electronics, supply and supervisory circuits Power convertors and power supplies to apparatus Voltage control Control of electric power systems |
| title | Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault |
| title_full | Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault |
| title_fullStr | Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault |
| title_full_unstemmed | Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault |
| title_short | Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault |
| title_sort | soft switching modulation of the multilevel cascaded h bridge inverter under dc source fault |
| topic | Power electronics, supply and supervisory circuits Power convertors and power supplies to apparatus Voltage control Control of electric power systems |
| url | https://doi.org/10.1049/gtd2.12105 |
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