Performance comparison of passive series R and shunt R-C damped LCL filter for grid-connected inverters

2019-07-01
Temiz, Hakan
Demirok, Erhan
Keysan, Ozan
Turkay, Ali
Cetinkaya, Burak
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.
JOURNAL OF ENGINEERING-JOE

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Citation Formats
H. Temiz, E. Demirok, O. Keysan, A. Turkay, and B. Cetinkaya, “Performance comparison of passive series R and shunt R-C damped LCL filter for grid-connected inverters,” JOURNAL OF ENGINEERING-JOE, pp. 4698–4702, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32892.