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:: Volume 6, Issue 11 (9-2017) ::
ieijqp 2017, 6(11): 71-79 Back to browse issues page
Solid-state Transformer Inrush Current Limiter for Power Quality Improvement
Teymoor Ghanbari Dr , Nima Tashakor MSc, Ehsan Bagheri MSc
Abstract:   (916 Views)

Excessive transient inrush current of the power transformers has some negative impacts such as: transformer lifetime reduction, mal-operation of the relevant protections, and power quality degradation. In some cases, the energization impact on power quality may lead to catastrophic damages to the system such as offshore stations. Therefore, suppression of inrush current is vital in such applications.

In this paper, a new Solid-State Inrush Current Limiter (SSICL) is proposed for medium voltage power transformers with the capability of integration with already existing circuit-breakers. The proposed SSICL consists of three similar sets of bidirectional semiconductor switch and an inrush current limiter resistor. Using a Kalman Filter based strategy, transformer inrush current is suppressed during magnetization process. In fact, built up profile of the inrush current is dictated in accordance with the estimated current by a slow dynamic Kalman filter. The proposed SSICL is simulated in MATLAB-SIMULINK and a single-phase experimental prototype of the limiter is implemented. The proposed control scheme was implemented using dsPIC30F4011. In order to evaluate the performance of the SSICL, some experiments were carried out. Simulation and Experimental results show that the proposed SSICL can considerably suppress inrush current of the transformer.

Keywords: Industrial transformers, Inrush current, Kalman Filter, Power Quality, Solid-state inrush current limiter.
Full-Text [PDF 1517 kb]   (452 Downloads)    
Type of Study: Research | Subject: Special
Received: 2016/09/20 | Accepted: 2017/08/21 | Published: 2017/09/5

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ghanbari T, tashakor N, Bagheri E. Solid-state Transformer Inrush Current Limiter for Power Quality Improvement. ieijqp. 2017; 6 (11) :71-79
URL: http://ieijqp.ir/article-1-381-en.html

Volume 6, Issue 11 (9-2017) Back to browse issues page
نشریه علمی- پژوهشی کیفیت و بهره وری صنعت برق ایران Iranian Electric Industry Journal of Quality and Productivity
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