- Open Simulink:Open MATLAB and then open Simulink by typing simulink in the MATLAB command window.
- Create a New Model:Start a new Simulink model by selecting "File" > "New" > "Blank Model."
- Add Grid Components:
- Use a Voltage Source block (Power Systems > Elements > Voltage Source) to represent the grid.
- Model the grid impedance using appropriate RLC elements.
- Add Parallel Rectifiers (VSCs):
- Model each parallel rectifier using a combination of power electronic switches and control circuits.
- Utilize the Power Electronics Blockset if available (Power Systems > Simscape > Foundation > Electrical > Specialized Power Systems > Power Electronics).
- Implement Control Algorithms:
- Add control algorithms to regulate the output voltage, current, and power factor.
- Implement synchronization algorithms using Phase-Locked Loops (PLLs) for grid synchronization.
- Include Filters and DC Link Capacitors:
- Model filters and DC link capacitors associated with each rectifier.
- Grid Interface Protection:
- Integrate protection circuits to prevent overcurrent, overvoltage, and other faults.
- Simulation Setup:
- Configure simulation parameters such as simulation time, solver settings, and initial conditions.
- Use a suitable solver for power systems simulations, such as the ode15s solver.
- Data Logging and Analysis:
- Include blocks for logging and analyzing key variables using Scope blocks or To Workspace blocks.
- Run Simulation:
- Click the "Run" button to simulate the model.
