VVVF Inverter

An RP2040-controlled three-phase IGBT traction inverter, with isolated gate drivers and isolated DC bus sensing on a 4-layer PCB.

View Schematic in KiCanvas ↗ View PCB in KiCanvas ↗
The VVVF Inverter control board with a Raspberry Pi Pico

I love the sounds of trains, so I wanted to build the same type of inverter used on most electric trains: a variable voltage, variable frequency (VVVF) inverter. A Raspberry Pi Pico generates the PWM, and the board’s gate drivers switch a three-phase IGBT module.

The control board hooked up to the IGBT module