Hi, I want to design a single-phase line-interactive UPS controlled by a DSP.
I thought of connecting the wall supply to the load through a triac switch. The load is in parallel with a bidirectional inverter/rectifier which provides DC voltage to a 2-Quadrant chopper to charge the battery. The DSP controls the chopper as a 1-quadrant chopper. When the wall supply is low enough, say 90 V, the DSP turns off the triac switch, and the battery supplies power to the load through the
2-quadrant chopper(as boost converter) and the PWM inverter. Is the triac switch a good idea? Is it fast enough? Any other faster alternatives without using online UPS? Thanks