I built a 150A (3600 Watt) dummy load using water heater elements for testing battery packs. I'm using a 600A IGBT and I'll walk you though some of the precautions with high current IGBT switching.

Heater element
https://www.amazon.com/gp/product/B01...

Amplifier H-Bridge
https://www.amazon.com/gp/product/B08...

Function Generator
https://www.amazon.com/gp/product/B07...

CM600 600A 1200V IGBT modules can be found on E-bay used for around $20.

Snubber film cap 1uF
https://www.digikey.com/en/products/d...

USB C PD Trigger (the one I used came from Ali express)
https://www.amazon.com/MELIFE-Type-C-...

Watt hr meter
https://www.amazon.com/gp/product/B07...

Tank 2.5 gal
https://www.amazon.com/GSTP-Universal...