Suggestions for building a reliable inverter driver stage?

Has anyone here tried designing or testing inverter driver circuits for medium- or high-power systems? I found this article on The Engineering Projects (https://www.theengineeringprojects.com/2012/11/basics-of-inverters-with-topology.html, about inverter topologies and how to design your own from the ground up, and it really helped me understand the fundamental structure of inverter systems.
I’ve also seen some great Arduino forum discussions on PWM-based inverter control and Raspberry Pi projects experimenting with sine-wave generation for AC loads. Still, I’m curious when scaling such circuits for higher power (above 500 W), what are the most common issues people face with heat, switching synchronization, or feedback control?