Building a Buck Converter

In this tutorial, you’ll build and save a power electronic circuit of a buck converter (step-down converter).

The diagram you’ll be reproducing is made up of eight blocks and their signals, and looks like this:

OPAL-RT's Schematic Editor helps users to build electrical diagrams for use in HYPERSIM or RT-LAB products.

• From the File menu, click New to create a new circuit. 
• From the Sources library, drag a Controlled Voltage Source onto the work area.
• Do the same for the Meters > Ammeter, leaving its settings in the Parameters sidebar at the default.
• To access the Parameters sidebar, simply click on the block and it'll appear on the right side.
• Rotate the Ammeter left 90 degrees (Edit > Rotate Counterclockwise or CTRL+SHIFT+R or using the small rotation handle in the top corner of the block).
• Now we'll connect the Controlled Voltage Source with the Ammeter through their electrical ports, that is, the circles on each end.
• To start, hover your mouse over the top electrical port (the circle) on the Controlled Voltage Source element. When it turns to a hand cursor, click and drag to the left electrical port of the Ammeter.
• A blue signal line appears, connecting them.
• Repeat the previous steps for the Ideal Switch and the Diode from the Switches library, rotating them as required.
• Connect them as shown in the video below.
• Repeat the previous steps for the Inductor, Capacitor, and Resistor from the Passive library, rotating them as required.
• Connect them as shown in the video below. 
• Repeat the previous steps for the Voltmeter from the Meters library. 

• Connect the Voltmeter as shown in the video below. 

• Set the Inductor parameter in the Parameters sidebar to 1.00e-3 Henry.
• Set the Capacitor parameter in the Parameters sidebar to 2.00e-6 Farad.
• Set the Resistor parameter in the Parameters sidebar to 12 ohms.
• Save your circuit as Buck Converter