Parallel Operation of VSC Rectifier

Hello,

I want to simulate a Grid Connected Parallel Rectifier(VSC). Is there any similar model available in mathworks ? Can anyone share anything related to this ?

Thank you

Answer 1

[Dr.GADDALA JAYA RAJU]

1. Open Simulink:Open MATLAB and then open Simulink by typing simulink in the MATLAB command window.
2. Create a New Model:Start a new Simulink model by selecting "File" > "New" > "Blank Model."
3. 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.

1. 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).

1. 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.

1. Include Filters and DC Link Capacitors:

• Model filters and DC link capacitors associated with each rectifier.

1. Grid Interface Protection:

• Integrate protection circuits to prevent overcurrent, overvoltage, and other faults.

1. 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.

1. Data Logging and Analysis:

• Include blocks for logging and analyzing key variables using Scope blocks or To Workspace blocks.

1. Run Simulation:

• Click the "Run" button to simulate the model.

[Farhan]

Thank you for your detailed explanation. Can you share anything regarding control strategy ?I made a model but I am struggling to generate PWM for my rectifier units .