Work in Progress: Output Impedance Specification of A Three-Phase Current-Source Inverter for Modular Photovoltaic Applications
Impedance-based stability assessment has been an important part of renewable integration. Modeling and measurement of impedance under Synchronized Reference Frame (SRF) is a common way for a portrait of the frequency-dependent impedance. In this paper, a modified current-source inverter (CSI) called...
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| Main Authors: | , , , , , , |
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| Format: | Conference Paper |
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Institute of Electrical and Electronics Engineers Inc.
2024
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| Summary: | Impedance-based stability assessment has been an important part of renewable integration. Modeling and measurement of impedance under Synchronized Reference Frame (SRF) is a common way for a portrait of the frequency-dependent impedance. In this paper, a modified current-source inverter (CSI) called CSI7 for photovoltaic (PV) integration is studied. The SRF admittance of the system under different solar irradiation from 400W/m2 to 1000W/m2 with a resolution of 100W/m2 is measured in PLECS simulation. It is found that large frequency-dependent admittance appears under the high-frequency zone of the q axis which could lead to harmonic instability problems. � 2023 IEEE. |
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