Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic Inverter
Aiming at the slow-scale nonlinear behaviors of a dual-loop control H-bridge photovoltaic inverter, a slow-scale nonlinear control method based on time-delay feedback control is proposed. Firstly, a feedback signal is formed by the difference between the current error signal and its own delay, and t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/9/2000 |
| _version_ | 1797602738114134016 |
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| author | Zhihong Yin Renxi Gong Yimin Lu |
| author_facet | Zhihong Yin Renxi Gong Yimin Lu |
| author_sort | Zhihong Yin |
| collection | DOAJ |
| description | Aiming at the slow-scale nonlinear behaviors of a dual-loop control H-bridge photovoltaic inverter, a slow-scale nonlinear control method based on time-delay feedback control is proposed. Firstly, a feedback signal is formed by the difference between the current error signal and its own delay, and the feedback signal is made to pass through a proportion link so as to obtain a time-delay control signal. Then, based on the necessary conditions of the stability criterion, the value range of the delay feedback proportional coefficient is quickly determined, and the best delay time is chosen by determining the variation curve of the largest Lyapunov exponent. Finally, based on the double-loop PI regulation, the time-delay control signal is added to the original control signal to form the final control signal applied to the inverter. The results obtained show that the slow-scale nonlinear behaviors in the system can be absolutely eliminated, and the stable operation domain of the inverter can be remarkably expanded. When the sun irradiance and temperature change, the proposed control method still has a good control effect and shows strong robustness. In addition, the complex calculation in determining the control coefficient and delay time can be avoided by the method. |
| first_indexed | 2024-03-11T04:20:52Z |
| format | Article |
| id | doaj.art-1a87b43cfefd417988dabac2575b0a27 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T04:20:52Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-1a87b43cfefd417988dabac2575b0a272023-11-17T22:47:22ZengMDPI AGElectronics2079-92922023-04-01129200010.3390/electronics12092000Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic InverterZhihong Yin0Renxi Gong1Yimin Lu2School of Electrical Engineering, Guangxi University, Nanning 530004, ChinaSchool of Electrical Engineering, Guangxi University, Nanning 530004, ChinaSchool of Electrical Engineering, Guangxi University, Nanning 530004, ChinaAiming at the slow-scale nonlinear behaviors of a dual-loop control H-bridge photovoltaic inverter, a slow-scale nonlinear control method based on time-delay feedback control is proposed. Firstly, a feedback signal is formed by the difference between the current error signal and its own delay, and the feedback signal is made to pass through a proportion link so as to obtain a time-delay control signal. Then, based on the necessary conditions of the stability criterion, the value range of the delay feedback proportional coefficient is quickly determined, and the best delay time is chosen by determining the variation curve of the largest Lyapunov exponent. Finally, based on the double-loop PI regulation, the time-delay control signal is added to the original control signal to form the final control signal applied to the inverter. The results obtained show that the slow-scale nonlinear behaviors in the system can be absolutely eliminated, and the stable operation domain of the inverter can be remarkably expanded. When the sun irradiance and temperature change, the proposed control method still has a good control effect and shows strong robustness. In addition, the complex calculation in determining the control coefficient and delay time can be avoided by the method.https://www.mdpi.com/2079-9292/12/9/2000double-loop controlH-bridge photovoltaic inverterslow-scale nonlinear behaviorsslow-scale nonlinear control |
| spellingShingle | Zhihong Yin Renxi Gong Yimin Lu Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic Inverter Electronics double-loop control H-bridge photovoltaic inverter slow-scale nonlinear behaviors slow-scale nonlinear control |
| title | Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic Inverter |
| title_full | Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic Inverter |
| title_fullStr | Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic Inverter |
| title_full_unstemmed | Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic Inverter |
| title_short | Slow-Scale Nonlinear Control of a H-Bridge Photovoltaic Inverter |
| title_sort | slow scale nonlinear control of a h bridge photovoltaic inverter |
| topic | double-loop control H-bridge photovoltaic inverter slow-scale nonlinear behaviors slow-scale nonlinear control |
| url | https://www.mdpi.com/2079-9292/12/9/2000 |
| work_keys_str_mv | AT zhihongyin slowscalenonlinearcontrolofahbridgephotovoltaicinverter AT renxigong slowscalenonlinearcontrolofahbridgephotovoltaicinverter AT yiminlu slowscalenonlinearcontrolofahbridgephotovoltaicinverter |