Co-simulation of LLC Circuit

This case demonstrates an LLC circuit simulation. The LLC module is a commonly used isolated DC/DC module in solid-state transformer design. In this case, the LLC operates under variable frequency control with a switching frequency around 200 kHz. The primary side features a fully-controlled H-bridge, while the secondary side employs a diode bridge.

To leverage MATLAB/Simulink’s powerful simulation capabilities for control systems, the LLC control is modeled within the MATLAB/Simulink environment. The simulation is implemented using DSIM’s co-simulation functionality.

The following figure shows the simulation results.