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Research on WECS Control Based on Model-free Adaptive Control Under Unbalanced Grid Voltage
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Chencong ZHAO1, Zhouhua XIE2, Feihang ZHOU3
Electric Drive | 2024, 54(10) : 67 - 75
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Electric Drive | 2024, 54(10): 67-75
Research on WECS Control Based on Model-free Adaptive Control Under Unbalanced Grid Voltage
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Chencong ZHAO1, Zhouhua XIE2, Feihang ZHOU3
Affiliations
  • 1. School of Information Engineering，Xi’an University，Xi’an 710065，Shaanxi，China
  • 2. Xi’an Thermal Power Research Institute Co.，Ltd.，Xi’an 710054，Shaanxi，China
  • 3. School of Automation，Xi’an University of Posts and Telecommunications，Xi’an 710121，Shaanxi，China
Published: 2024-10-20 doi: 10.19457/j.1001-2095.dqcd25123
Outline
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Unbalanced grid voltage will affect the normal grid connection operation of the wind energy conversion system（WECS），resulting in fluctuations in system output power and distortion of output current. In addition，in the actual permanent magnet synchronous wind power system，there may be uncertainties in the network side circuit parameters due to changes in ambient temperature and detection errors. If the parameter changes，the performance of traditional control methods will decline. Based on this，a model-free adaptive control（MFAC）scheme based on grey prediction was proposed to alleviate the performance degradation problem caused by parameter uncertainty and make the control system have better anti-interference ability. Furthermore，three independent control methods were adopted to solve the problem of grid connected output power fluctuation and current distortion under unbalanced grid voltage. The simulation results show that the proposed control strategy not only has good static and dynamic performance under nominal parameters，but also improves the robustness of the system when the grid side inductance changes，which verifies the superiority of the proposed scheme.

unbalanced grid voltage  /  wind energy conversion system（WECS）control strategy  /  grey prediction  /  model-free adaptive control（MFAC） scheme  /  parameter uncertainties
Chencong ZHAO, Zhouhua XIE, Feihang ZHOU. Research on WECS Control Based on Model-free Adaptive Control Under Unbalanced Grid Voltage[J]. Electric Drive, 2024 , 54 (10) : 67 -75 . DOI: 10.19457/j.1001-2095.dqcd25123
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Year 2024 volume 54 Issue 10
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Article Info
doi: 10.19457/j.1001-2095.dqcd25123
  • Receive Date：2023-05-08
  • Online Date：2025-11-11
  • Published：2024-10-20
Article Data
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History
  • Received：2023-05-08
  • Revised：2023-06-28
Funding
Affiliations
    1. School of Information Engineering，Xi’an University，Xi’an 710065，Shaanxi，China
    2. Xi’an Thermal Power Research Institute Co.，Ltd.，Xi’an 710054，Shaanxi，China
    3. School of Automation，Xi’an University of Posts and Telecommunications，Xi’an 710121，Shaanxi，China
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https://castjournals.cast.org.cn/joweb/dqcd/EN/10.19457/j.1001-2095.dqcd25123
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Citations
表12种不同金属材料的力学参数
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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