Analysis of the Passive Damping Losses in LCL-Filter-Based Grid Converters

By R. Peña-Alzola, Marco Liserre, Frede Blaabjerg, R. Sebastián, Jörg Dannehl, Friedrich Wilhelm Fuchs. IEEE transactions on power electronics, 2013

594 citations recorded by the source corpus.

Passive damping is the most adopted method to guarantee the stability of LCL-filter-based grid converters. The method is simple and, if the switching and sampling frequencies are sufficiently high, the damping losses are negligible. This letter proposes the tuning of different passive damping methods and an analytical estimation of the damping losses allowing the choice of the minimum resistor value resulting in a stable current control and not compromising the LCL-filter effectiveness. Stability, including variations in the grid inductance, is studied through root locus analysis in the z-plane. The analysis is validated both with simulation and with experiments.

Subfields: Control and Systems Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/4d4438ac9707d3f50947c9967591366ac54b6a3a

How researchers see this paper

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In Control and Systems Engineering

1. Ricardo C. L. F. Oliveira
2. Bo Lei
3. Weiwei Li
4. Yu Yang
5. Jun Chen
6. Changyue Zou
7. Shukai Xu
8. Hong Rao

In Electrical and Electronic Engineering

1. Bo Lei
2. Weiwei Li
3. Yu Yang
4. Jun Chen
5. Changyue Zou
6. Shukai Xu
7. Hong Rao
8. Yan Li

Citations in the corpus

• LMI-Based Control for Grid-Connected Converters With LCL Filters Under Uncertain Parameters (2014, background): “One solution is given by passive damping strategies [11] and another is given by active damping, which is based on the design of a suitable controller able to damp the resonance without inserting elements in the filter [12].”
• Wide Damping Region for LCL-Type Grid-Connected Inverter With an Improved Capacitor-Current-Feedback Method (2015, background): “However, introducing additional resistors to the circuit inevitably leads to higher losses and reduces the high-frequency harmonics attenuation ability of the filter [12].”
• Analysis of Resonance Between a VSC-HVDC Converter and the AC Grid (2018, background): “To stabilize the system, passive damping [6]–[8] or active damping methods [9]–[12] are proposed to damp the inherent resonance.”