Design and implementation of FLC system for fault ride-through capability enhancement in PMSG-wind systems

Abstract

Fault ride-through (FRT) capability enhancement for the growth of renewable energy generators has become a crucial issue for their incorporation into the electricity grid to provide secure, reliable, and efficient electricity. This paper presents a new FRT capability scheme for a permanent magnet synchronous generator (PMSG)-based wind energy generation system using a hybrid solution. The hybrid solution is a combination of a braking chopper (BC) and a fuzzy logic controller (FLC). All proportional-integral (PI) controllers which control the generator and grid side converters are replaced with FLC. Moreover, a BC system is connected to the dc link to improve the dynamic response of the PMSG during fault conditions. The PMSG was evaluated on a three-phase fault that occurs on an electrical network in three scenarios. In the first two scenarios, a BC is used with a PI controller and FLC respectively. While the third scenario uses only FLC without a BC. The obtained results showed that the suggested solution can not only enhance the FRT capability of the PMSG but also can diminish the occurrence of hardware systems and reduce their impact on the PMSG system. The simulation tests are performed using MATLAB/SIMULINK software.

Amplitude Sampled Reference-Based Space Vector Pulse Width Modulation for Control of Voltage Source Converters

“…The two-level neutral-point-clamped converter, modular multilevel converter (MMC), variant MMC, and alternatearm converter (AAC) are all types of voltage source converters. There are also hybrid VSC systems, which aim to achieve low losses and high harmonic performance of MMC with a more compact design and greater controllability, but these concepts are still under research [21], [22].…”

Effect of Grid Faults on Dominant Wind Generators for Electric Power System Integration:A Comparison and Assessment

“…Nevertheless, different technologies and existing WT designs should be considered to select the one that performs well in a specific application. Wind energy is a plentiful resource given by mother nature [7,8]. Furthermore, the worldwide availability of this sort of RES makes it suitable for autonomous energy production.…”

Şebeke Bağlantılı Bir Fotovoltaik Sistemin Arıza Sonrası Yeniden Bağlanabilme Yeteneğinin Değiştirilmiş Bir PI Kontrolör Kullanılarak İyileştirilmesi

“…ASYBK çözümlerinin gerçek hayatta uygulanabilirliği açısından, cihaz içerisinde fazla yer kaplaması, aşırı ısınma, yüksek maliyet gibi bazı kısıtlar mevcuttur. Bu yüzden sistem kararlılığını ve güvenilirliğini artırmakla beraber ısınma, yer kaplama ve maliyet gibi konularda da kullanıcıları sıkıntıya sokmayan veya bu problemleri minimum düzeye indiren yaklaşımlara ihtiyaç duyulmaktadır [10,11]. Şekil 2'de akış diyagramı verilen bu çalışmada, şebeke bağlantılı bir FV sistemin ASYBK'sının geliştirilmesi amacıyla değiştirilmiş bir PI kontrolör önerilmiştir.…”