I want to design a standalone dynamic braking circuit for AC motor driver , because to deal with regenerative energy that the AC source cannot handle causing a DC bus voltage Rise . The concept is well established in many resources online that senses the DC bus voltage and dissipates the access energy in a " Brake Resistor ".
I want to know what is usually used circuit that is called in the diagram as "chopper module" and design it without micro controller if possible.
I donot know of an IC that is designed for this purpose solely , so what comes to mind is comparator with hysteresis with a low side gate driver to open/close Braking mosfet. but no so sure if this is a decent choice until i test in reality and see how well it will work.
My concept test circuit :
So I would like to know your comments on the subject, and corrections if i am missing something here .