Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output Current
The dc-link voltage ripple plays an important role in dc capacitor design for three-phase voltage source converters (VSCs). However, the analytical models of the dc-link voltage ripple have rarely been reported for VSCs with nonlinear output current. This paper first derived the LOH voltages express...
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MDPI AG
2022-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/8/2892 |
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| author | Shan Li Lei Yang Tao Wang |
| author_facet | Shan Li Lei Yang Tao Wang |
| author_sort | Shan Li |
| collection | DOAJ |
| description | The dc-link voltage ripple plays an important role in dc capacitor design for three-phase voltage source converters (VSCs). However, the analytical models of the dc-link voltage ripple have rarely been reported for VSCs with nonlinear output current. This paper first derived the LOH voltages expressions in the dc-link. It reveals that each LOH component in ac current would induce two dc-link LOH voltages. Then the switching frequency harmonic voltages (SHVs) and their envelope expressions are formulated. Moreover, the proposed analytical models could be very much simplified when applied to special cases in the previous literature. Finally, an easy to design dc capacitor equation under nonlinear output current is also derived. Both simulation and experimental results validate the proposed method. |
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| format | Article |
| id | doaj.art-15b336049fdc4e9daec13f48d6fdf11f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T10:36:56Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-15b336049fdc4e9daec13f48d6fdf11f2023-12-01T20:49:27ZengMDPI AGEnergies1996-10732022-04-01158289210.3390/en15082892Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output CurrentShan Li0Lei Yang1Tao Wang2School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, ChinaSchool of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, ChinaSchool of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, ChinaThe dc-link voltage ripple plays an important role in dc capacitor design for three-phase voltage source converters (VSCs). However, the analytical models of the dc-link voltage ripple have rarely been reported for VSCs with nonlinear output current. This paper first derived the LOH voltages expressions in the dc-link. It reveals that each LOH component in ac current would induce two dc-link LOH voltages. Then the switching frequency harmonic voltages (SHVs) and their envelope expressions are formulated. Moreover, the proposed analytical models could be very much simplified when applied to special cases in the previous literature. Finally, an easy to design dc capacitor equation under nonlinear output current is also derived. Both simulation and experimental results validate the proposed method.https://www.mdpi.com/1996-1073/15/8/2892capacitorsVSCsvoltage ripplelow order harmonics |
| spellingShingle | Shan Li Lei Yang Tao Wang Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output Current Energies capacitors VSCs voltage ripple low order harmonics |
| title | Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output Current |
| title_full | Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output Current |
| title_fullStr | Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output Current |
| title_full_unstemmed | Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output Current |
| title_short | Analysis of the DC-Link Voltage Ripple for the Three-Phase Voltage Source Converter under Nonlinear Output Current |
| title_sort | analysis of the dc link voltage ripple for the three phase voltage source converter under nonlinear output current |
| topic | capacitors VSCs voltage ripple low order harmonics |
| url | https://www.mdpi.com/1996-1073/15/8/2892 |
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