A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple Suppression
In this paper, double-line frequency (2ω) ripple suppression and SMC with time-invariant (fixed) switching frequency methods are proposed for single-phase grid-connected three-level neutral-pointclamped quasi-Z-source inverters. The 2ω ripple suppression method is based on the...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8882208/ |
| _version_ | 1818855505612767232 |
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| author | Sertac Bayhan Hasan Komurcugil |
| author_facet | Sertac Bayhan Hasan Komurcugil |
| author_sort | Sertac Bayhan |
| collection | DOAJ |
| description | In this paper, double-line frequency (2ω) ripple suppression and SMC with time-invariant (fixed) switching frequency methods are proposed for single-phase grid-connected three-level neutral-pointclamped quasi-Z-source inverters. The 2ω ripple suppression method is based on the 180° phase difference existing between the 2ω ripple components of the capacitor and inductor voltages in the dc-side. Hence, when these components are added in the closed-loop, a phase cancellation occurs so that the inductor current reference can be generated without 2ω ripple component. In this case, the actual inductor current, which is forced to track its reference, has no 2ω ripple component. In addition, the grid current control is achieved via sliding mode control (SMC). Unlike the existing SMC methods, the proposed SMC achieves fixed switching frequency which is made possible by eliminating the discontinuities in the sliding surface function using a boundary layer. The proposed ripple suppression method together with the SMC method offers many advantages such as fast dynamic response, zero grid current error, simple implementation, robustness to parameter variations and fixed switching frequency. The effectiveness of the proposed control method is verified experimentally under steady-state and transient conditions. |
| first_indexed | 2024-12-19T08:09:40Z |
| format | Article |
| id | doaj.art-fdbcd230f9a94a7aa89bdb9f35939d1d |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T08:09:40Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-fdbcd230f9a94a7aa89bdb9f35939d1d2022-12-21T20:29:40ZengIEEEIEEE Access2169-35362019-01-01716000416001610.1109/ACCESS.2019.29493568882208A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple SuppressionSertac Bayhan0https://orcid.org/0000-0003-2027-532XHasan Komurcugil1Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Doha, QatarDepartment of Computer Engineering, Eastern Mediterranean University, Mersin, Famagusta, TurkeyIn this paper, double-line frequency (2ω) ripple suppression and SMC with time-invariant (fixed) switching frequency methods are proposed for single-phase grid-connected three-level neutral-pointclamped quasi-Z-source inverters. The 2ω ripple suppression method is based on the 180° phase difference existing between the 2ω ripple components of the capacitor and inductor voltages in the dc-side. Hence, when these components are added in the closed-loop, a phase cancellation occurs so that the inductor current reference can be generated without 2ω ripple component. In this case, the actual inductor current, which is forced to track its reference, has no 2ω ripple component. In addition, the grid current control is achieved via sliding mode control (SMC). Unlike the existing SMC methods, the proposed SMC achieves fixed switching frequency which is made possible by eliminating the discontinuities in the sliding surface function using a boundary layer. The proposed ripple suppression method together with the SMC method offers many advantages such as fast dynamic response, zero grid current error, simple implementation, robustness to parameter variations and fixed switching frequency. The effectiveness of the proposed control method is verified experimentally under steady-state and transient conditions.https://ieeexplore.ieee.org/document/8882208/Neutral-point clamped (NPC) inverterquasi-Z-source networksliding mode control (SMC)proportional-resonant (PR) control |
| spellingShingle | Sertac Bayhan Hasan Komurcugil A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple Suppression IEEE Access Neutral-point clamped (NPC) inverter quasi-Z-source network sliding mode control (SMC) proportional-resonant (PR) control |
| title | A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple Suppression |
| title_full | A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple Suppression |
| title_fullStr | A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple Suppression |
| title_full_unstemmed | A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple Suppression |
| title_short | A Sliding-Mode Controlled Single-Phase Grid-Connected Quasi-Z-Source NPC Inverter With Double-Line Frequency Ripple Suppression |
| title_sort | sliding mode controlled single phase grid connected quasi z source npc inverter with double line frequency ripple suppression |
| topic | Neutral-point clamped (NPC) inverter quasi-Z-source network sliding mode control (SMC) proportional-resonant (PR) control |
| url | https://ieeexplore.ieee.org/document/8882208/ |
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