We see from your earlier posts you have experience with power circuitry.
1. Is this inverter equipped with fault detection such that, if an output switch or controller fails, that it will disconnect the output with a physical relay, to prevent large DC outputs that can damage loads? Can you provide HF inverter examples that have protective relay that prevents DC...
diysolarforum.com
Apparently you don't like MPPT, which is simply SMPS with a peak search function.
The whole world has gone SMPS; it's inside everything from cell phones to large analytical instruments.
We understand there is a range of conditions where PWM will deliver as much, possibly a little more power than MPPT.
That would be where battery voltage is at the flat part of PV power/voltage curve.
So maybe it is optimum for some systems, carefully designed and matched.
If nothing else, MPPT matches array voltage to lower voltage battery, with multiple MPPT inputs can have multiple string lengths, and deals with voltage variations such as partial shading and IR drop at higher current.
When you can design a circuit once and it corrects for varying site conditions, temperature, panel voltage, that is a huge win from a business perspective. Less design and labor cost.
These things are being deployed by the millions.
Worldwide, PV installations are in the terawatt range. I can assure you those are almost exclusively MPPT, not PWM.
en.wikipedia.org
