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Interpolation Methods to Enable Fast and Accurate EMT Simulation of PV Inverters

by Phani Ratna Vanamali Marthi, Suman Debnath, Jongchan Choi
Publication Type
Conference Paper
Book Title
2023 IEEE 24th Workshop on Control and Modeling for Power Electronics (COMPEL)
Publication Date
Page Numbers
1 to 8
Publisher Location
New Jersey, United States of America
Conference Name
24th IEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
Conference Location
Ann Arbor, Michigan, United States of America
Conference Sponsor
Conference Date

In this paper, interpolation methods to enable fast simulation of photovoltaic (PV) inverters are proposed. The interpolation methods are based on the event-driven interpolating method that can be introduced in the simulation model to run the model at a higher timestep while maintaining accuracy. The proposed methods are tested on a neutral point clamp (NPC) converter and a two-level converter (2LC) that are typically used in large-scale PV plants. The interpolation methods are integrated into the NPC and 2LC simulation models in PSCAD/Fortran and RSCAD C platforms. These models are tested at different simulation timesteps in off-line and real-time simulation platforms PSCAD and RSCAD respectively.