Abstract
We derive equivalent-circuit models of control- and physical-layer subsystems of grid-forming (GFM) inverter-based resources (IBRs) for electromagnetic-transient (EMT) simulations. Three different primary controllers are considered: droop, virtual synchronous machine (VSM), and dispatchable virtual oscillator control (dVOC). In addition, the models include cascaded voltage- and current-control loops, and LCL output filters. Simulations for a single-inverter setup and for a network of five inverters in a modified IEEE 14-bus topology are presented. The equivalent-circuit models simulated with analog electronic circuit-simulator software (in our case, LTspice) offer the same accuracy with up to 150x lower computational burden compared to block-diagram-based implementations in commercial off-the-shelf EMT software (in our case, MATLAB-Simulink).
Original language | American English |
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Number of pages | 8 |
State | Published - 2024 |
Event | IEEE Power and Energy Society General Meeting (PESGM) - Seattle WA Duration: 21 Jul 2024 → 25 Jul 2024 |
Conference
Conference | IEEE Power and Energy Society General Meeting (PESGM) |
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City | Seattle WA |
Period | 21/07/24 → 25/07/24 |
NREL Publication Number
- NREL/CP-5D00-88117
Keywords
- circuit-equivalent model
- electromagnetic transient simulation
- grid-forming inverter