MPPT for a current transformer based energy harvester may or may not make sense, but either way it definitely needs to be configured differently than you would for a PV.
The ADP5092 datasheet provides an example of how to use a CT with that chip:
The left-most four diodes make up a bridge rectifier. The right-most pair of diodes establishes what is essentially a constant-voltage burden resistor. What you end up with is a system with essentially constant voltage (for all but very tiny currents) and current that varies based on the primary. Like other EH topologies, this charges the main inductor, which switches on and off at some rate and dumps energy into VIN.
However, if you look at how MPPT is set up, it's going to be V(open circuit) * 6.34 / (6.34 + 14.7) = 0.97 volts assuming V(open circuit) is somewhere around 1.4 volts. The circuit as configured would enable MPPT sampling mode, and MINOP would be 0.22 Volts.
I don't think either of these things make sense. First of all, as soon as there's any appreciable current the voltage on VIN will be something close to two diode drops. In this circuit, I don't think a fixed threshold like that really works.
Second, if you do want MPPT sampling (which I'm not sure you do) then the way to look at that would be that you're looking at the voltage on the 10 uF capacitor. But that capacitor is going to quickly charge to 1.4V, slowed down only by the real impedances of the components (a CT is often modeled as a current source but it really isn't quite).
My guess is I'm looking at this incorrectly, but where am I going wrong?