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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kuo, W.-T. Hsu, Y.-C. Liu, C.W. Chen, Y.-M. Chang, Y.-R. Huang, H.-L. |
| Copyright Year | 2013 |
| Description | Author affiliation: Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan (Kuo, W.-T.; Hsu, Y.-C.; Liu, C.W.; Chen, Y.-M.) || Inst. of Nucl. Energy Res., Taoyuan, Taiwan (Chang, Y.-R.; Huang, H.-L.) |
| Abstract | An unbalanced voltage in a 3-phase system will lead to the $2^{nd}$ order harmonic and overcurrent in the output of PV inverters. To solve the problem, this paper adopted a double-loop feed-forward decoupling control on the basis of a well-recognized concept of “symmetrical components”. The paper proposed a Lagrange multiplier- based methodology to improve the control current of 3-phase PV inverters so as to meet the criteria of LVRT. Moreover, the paper introduced a weighting parameter into the set of Lagrange equations to achieve a more adaptive control; that is, any desired ratio of the ripple amplitude in real power to that in reactive power can be reached under fault conditions. The simulation results have justified the feasibility of the proposed control method in suppressing both active and reactive power ripples, meanwhile demonstrating the adaptivity of the method to different control targets. |
| Starting Page | 510 |
| Ending Page | 514 |
| File Size | 3035180 |
| Page Count | 5 |
| File Format | |
| e-ISBN | 9781479900732 |
| DOI | 10.1109/IFEEC.2013.6687559 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-11-03 |
| Publisher Place | Taiwan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Current control Lagrange multiplier Dual control scheme 3-phase grid-connected inverter Low-voltage ride-through (LVRT) Photovoltaic (PV) power system |
| Content Type | Text |
| Resource Type | Article |
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