Performance comparison of passive series R and shunt R‐C damped LCL filter for grid‐connected inverters. Issue 18 (21st June 2019)

• Record Type: Journal Article
• Authors: Temiz, Hakan; Demirok, Erhan; Keysan, Ozan; Türkay, Ali; Çetinkaya, Burak
• Is Part Of: Journal of engineering. Volume 2019:Issue 18(2019)
• Page Start: 4698
• Page End: 4702
• Publication Date: 2019-06-21
• Subjects: invertors -- power filters -- distributed power generation -- damping -- power grids; performance comparison -- passive series R -- grid‐connected inverters -- distributed power‐generation systems -- high‐frequency harmonics -- pulse‐width modulation -- series‐connected reactive components -- resonance effects -- passive damping methods -- lower switching frequencies -- switching power losses -- high‐power applications -- active damping -- resonance damping -- grid current attenuation -- high frequencies -- damping circuits -- shunt R‐C damped LCL filter; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2018.9321
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : LCL filters are widely used in distributed power‐generation systems to attenuate high‐frequency harmonics caused by pulse‐width modulation switching of grid‐connected inverters. A resonance occurs due to the series‐connected reactive components. In order to damp resonance effects, active and passive damping methods are used. Lower switching frequencies are typically preferred to decrease switching power losses with high‐power applications. Thus, control bandwidth of the system is limited and implementation of active damping gets harder. As a result, passive damping methods are commonly used in high‐power applications. In this study, performances of two most commonly used passive damping methods which are series R damped and shunt R‐C damped are analysed and compared in terms of resonance damping, grid current attenuation at high frequencies, and power losses on damping circuits.