DOI:https://doi.org/10.1007/s40565-018-0463-8 |
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Stability analysis of high power factor Vienna rectifier based on reduced order model in d-q domain |
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Net amount: 807 |
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Author:
Chaoliang DANG1, Xiangqian TONG1, Weizhang SONG1, Jingjing HUANG1
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Author Affiliation:
Department of Electrical Engineering, Xi’an University of
Technology, Xi’an 710048, China
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Foundation: |
This work was supported by the National Natural Science Fund of China (No. 51677151), National Natural Science Youth Fund of China (No. 51507138), the Major Scientific and Technological Innovation Projects of Shaanxi Province, China (No. 2015ZKC02-01) and International Exchange And Cooperation Project of Key R&D Program in Shaanxi (No. 2017KW-035). |
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Abstract: |
For a DC distributed power system, system stability
can be predicted by dividing it into source and load
subsystems, and then applying the Nyquist criterion to the
impedance interaction between the source and load model.
However, the generalized Nyquist criterion is extremely
complicated and cannot directly reveal effective control
strategies to reduce interaction problems of cascade threephase
AC systems. Specifically, as a current force rectifier,
this characteristic makes it difficult to judge the stability of
a cascade three-phase Vienna AC system. To deal with the
aforementioned problems, a simplified small signal stability
criterion is presented for an AC distributed power
system. Based on the criterion, the small signal model and
impedance based on the reduced order model in the dq
domain are studied theoretically. For the instability issue,
an impedance regulator design method is presented. The
correctness of the simplified stability criterion and the
effectiveness of the proposed impedance regulator method
are validated by extensive simulation and experiment. |
Keywords: |
Three-level Vienna rectifier, Small-signal
stability, Nyquist criterion, Grid impedance, Impedance
regulator |
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Online Time:2019/01/28 |
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