AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor
This paper presents a comprehensive study of peak-to-peak and root-mean-square (RMS) values of AC current ripples with balanced and unbalanced fundamental currents in a generic case of three-phase four-leg converters with uncoupled AC interface inductors present in all three phases and in neutral. T...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/5/1430 |
| _version_ | 1797413539699228672 |
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| author | Aleksandr Viatkin Riccardo Mandrioli Manel Hammami Mattia Ricco Gabriele Grandi |
| author_facet | Aleksandr Viatkin Riccardo Mandrioli Manel Hammami Mattia Ricco Gabriele Grandi |
| author_sort | Aleksandr Viatkin |
| collection | DOAJ |
| description | This paper presents a comprehensive study of peak-to-peak and root-mean-square (RMS) values of AC current ripples with balanced and unbalanced fundamental currents in a generic case of three-phase four-leg converters with uncoupled AC interface inductors present in all three phases and in neutral. The AC current ripple characteristics were determined for both phase and neutral currents, considering the sinusoidal pulse-width modulation (SPWM) method. The derived expressions are simple, effective, and ready for accurate AC current ripple calculations in three- or four-leg converters. This is particularly handy in the converter design process, since there is no need for heavy numerical simulations to determine an optimal set of design parameters, such as switching frequency and line inductances, based on the grid code or load restrictions in terms of AC current ripple. Particular attention has been paid to the performance comparison between the conventional three-phase three-leg converter and its four-leg counterpart, with distinct line inductance values in the neutral wire. In addition to that, a design example was performed to demonstrate the power of the derived equations. Numerical simulations and extensive experimental tests were thoroughly verified the analytical developments. |
| first_indexed | 2024-03-09T05:20:25Z |
| format | Article |
| id | doaj.art-b0cd1ad5ec834502bd7856ebc4be2531 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T05:20:25Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b0cd1ad5ec834502bd7856ebc4be25312023-12-03T12:41:29ZengMDPI AGEnergies1996-10732021-03-01145143010.3390/en14051430AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line InductorAleksandr Viatkin0Riccardo Mandrioli1Manel Hammami2Mattia Ricco3Gabriele Grandi4Department of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, ItalyDepartment of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, ItalyDepartment of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, ItalyDepartment of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, ItalyDepartment of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, ItalyThis paper presents a comprehensive study of peak-to-peak and root-mean-square (RMS) values of AC current ripples with balanced and unbalanced fundamental currents in a generic case of three-phase four-leg converters with uncoupled AC interface inductors present in all three phases and in neutral. The AC current ripple characteristics were determined for both phase and neutral currents, considering the sinusoidal pulse-width modulation (SPWM) method. The derived expressions are simple, effective, and ready for accurate AC current ripple calculations in three- or four-leg converters. This is particularly handy in the converter design process, since there is no need for heavy numerical simulations to determine an optimal set of design parameters, such as switching frequency and line inductances, based on the grid code or load restrictions in terms of AC current ripple. Particular attention has been paid to the performance comparison between the conventional three-phase three-leg converter and its four-leg counterpart, with distinct line inductance values in the neutral wire. In addition to that, a design example was performed to demonstrate the power of the derived equations. Numerical simulations and extensive experimental tests were thoroughly verified the analytical developments.https://www.mdpi.com/1996-1073/14/5/1430current rippleharmonic distortionswitching lossesoptimizationfour-legthree-phase four-wire |
| spellingShingle | Aleksandr Viatkin Riccardo Mandrioli Manel Hammami Mattia Ricco Gabriele Grandi AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor Energies current ripple harmonic distortion switching losses optimization four-leg three-phase four-wire |
| title | AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor |
| title_full | AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor |
| title_fullStr | AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor |
| title_full_unstemmed | AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor |
| title_short | AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor |
| title_sort | ac current ripple in three phase four leg pwm converters with neutral line inductor |
| topic | current ripple harmonic distortion switching losses optimization four-leg three-phase four-wire |
| url | https://www.mdpi.com/1996-1073/14/5/1430 |
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