A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak Grid
This paper proposes a fractional phase compensation(FPC) scheme for proportional resonance in parallel with multirate repetitive control (PRMRC) to suppress the grid-injected current harmonics and improve the stability of LCL inverter under weak grid condition. In the PRMRC, the proportional resonan...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2021-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9654213/ |
| _version_ | 1818479507397410816 |
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| author | Chengbi Zeng Sudan Li Hanwen Wang Hong Miao |
| author_facet | Chengbi Zeng Sudan Li Hanwen Wang Hong Miao |
| author_sort | Chengbi Zeng |
| collection | DOAJ |
| description | This paper proposes a fractional phase compensation(FPC) scheme for proportional resonance in parallel with multirate repetitive control (PRMRC) to suppress the grid-injected current harmonics and improve the stability of LCL inverter under weak grid condition. In the PRMRC, the proportional resonance control is introduced to overcome the disadvantages caused by inherent delay of repetitive control. Moreover, in order to expand the system stability range and improve the adaptability of the PRMRC in the weak grid, a Newton fractional filter is proposed to approximate the fractional part of the phase compensation term. The coefficients of the Newton fractional filter do not need to be adjusted online even when the grid impedance fluctuates, which greatly reduces the computational burden. The stability principle of the fractional phase compensation PRMRC scheme and the detailed parameter setting are discussed in the paper. Both simulation and experiment are carried out and the results verify the feasibility and effectiveness of the fractional phase compensation scheme of PRMRC (FPC-PRMRC) for LCL inverter connected to weak grid. |
| first_indexed | 2024-12-10T11:11:34Z |
| format | Article |
| id | doaj.art-a81acc9b4cda42ad94825cf74387ca14 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-10T11:11:34Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-a81acc9b4cda42ad94825cf74387ca142022-12-22T01:51:24ZengIEEEIEEE Access2169-35362021-01-01916702716703810.1109/ACCESS.2021.31362009654213A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak GridChengbi Zeng0https://orcid.org/0000-0001-6238-9507Sudan Li1https://orcid.org/0000-0002-5661-5827Hanwen Wang2https://orcid.org/0000-0003-4540-8029Hong Miao3https://orcid.org/0000-0002-5874-5908College of Electrical Engineering, Sichuan University, Chengdu, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu, ChinaThis paper proposes a fractional phase compensation(FPC) scheme for proportional resonance in parallel with multirate repetitive control (PRMRC) to suppress the grid-injected current harmonics and improve the stability of LCL inverter under weak grid condition. In the PRMRC, the proportional resonance control is introduced to overcome the disadvantages caused by inherent delay of repetitive control. Moreover, in order to expand the system stability range and improve the adaptability of the PRMRC in the weak grid, a Newton fractional filter is proposed to approximate the fractional part of the phase compensation term. The coefficients of the Newton fractional filter do not need to be adjusted online even when the grid impedance fluctuates, which greatly reduces the computational burden. The stability principle of the fractional phase compensation PRMRC scheme and the detailed parameter setting are discussed in the paper. Both simulation and experiment are carried out and the results verify the feasibility and effectiveness of the fractional phase compensation scheme of PRMRC (FPC-PRMRC) for LCL inverter connected to weak grid.https://ieeexplore.ieee.org/document/9654213/Grid-connected invertermultirate repetitive controlweak gridfractional phase compensationNewton fractional filter |
| spellingShingle | Chengbi Zeng Sudan Li Hanwen Wang Hong Miao A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak Grid IEEE Access Grid-connected inverter multirate repetitive control weak grid fractional phase compensation Newton fractional filter |
| title | A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak Grid |
| title_full | A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak Grid |
| title_fullStr | A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak Grid |
| title_full_unstemmed | A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak Grid |
| title_short | A Fractional Phase Compensation Scheme of PRMRC for LCL Inverter Connected to Weak Grid |
| title_sort | fractional phase compensation scheme of prmrc for lcl inverter connected to weak grid |
| topic | Grid-connected inverter multirate repetitive control weak grid fractional phase compensation Newton fractional filter |
| url | https://ieeexplore.ieee.org/document/9654213/ |
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