DOI:https://doi.org/10.1007/s40565-018-0444-y |
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Crowbar resistance value-switching scheme conjoint analysisbased on statistical sampling for LVRT of DFIG |
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Net amount: 642 |
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Author:
Yanbin QU1
, Le GAO1
, Guangfu MA2
, Huihui SONG1
,
Shitao WANG3
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Author Affiliation:
1. School of Information and Electrical Engineering, Harbin
Institute of Technology at Weihai, No.2, West Wenhua Road,
Weihai 264209, China
2. Department of Control Science and Engineering, Harbin
Institute of Technology, No. 92, West Dazhi Street, Nangang
District, Harbin 150001, China
3. State Grid of China Technology College, No. 500, Erhuan
South Rd, Jinan, China
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Foundation: |
This work was supported by the Natural
National Science Foundation of China (No. 61773137, No.
61403099), and the Natural National Science Foundation of Shandong
Province (No. 2014BSA10007, No. 2014J14LN92). |
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Abstract: |
An active crowbar protective circuit is an
effective and common approach for low voltage ride
through (LVRT) of a doubly-fed induction generator
(DFIG). The crowbar resistance value and its switching
scheme both have crucial effects on safety recovery. The
effects encountered are correlative dependence and interplay
so that analyzing them from a single factor, as most
existing LVRT control methods would do, obtains a partial
optimal solution. This paper connects these two factors to
analyze their coordination effects on the LVRT control,
and to also investigate whether the global optimal performance
of these factors can be achieved. The principles for
resistance selection and the schemes for crowbar switching
are discussed first. Next the coupling relationship is analyzed
based on statistical sampling simulation data with
different resistance values and various switching schemes.
The results demonstrate that their coordination has critical
influence on rotor peak current, DC-link voltage and
reactive power. The optimal coordination will be different
according to specific requirements. Hence the global optimal
combination could be achieved when all requirements
are taken into consideration. |
Keywords: |
Doubly-fed induction generator, Active
crowbar, Switching scheme, Resistance value, Statistical
sampling data |
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Online Time:2019/05/14 |
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