I am working on a novel of a fantasy world on another planet. I am not too concerned with scientific accuracy, as again, it's fantasy, but I am not interested in supernatural things for my world. That is, there is no magic in my world, and all the phenomena is natural or organic.
That said, my idea was to have my planet orbiting not a star, but some kind of "star engine" construct, composed of some kind of fantasy mineral/element that only exists in my world that births stars in the manner of a flowering plant. The solar energy would then be absorbed by another sort of material orbiting the planet, some kind of fantasy rock/asteroid chain that safely filters the radiation.
The idea would be that a sort of microstar is generated, absorbed, dispersed on the earth in various ways (some kind of storm/explosion) and then somehow reborn in a cycle, perhaps from a kind of 'pollination' process that is both organic and contributed from the (fairly ancient/medieval/non futuristic) technology of the inhabitants.
So therefore, there's no 'sun' or main star, and no daylight/seasons like there would be on a conventional planet orbiting a sun like star. There would still be seasons, but they would be based around the 'starbirth' of this hypothetical star engine that my planet rotates around.
I would assume the magnetic field of the planet would not be conventionally dipolar but would be more chaotic, but again this fictional mineral rocky chain would help to keep radiation from destroying life (most of the time - there'd be storms of course).
I would like all of this to follow some internal logic and not chalk it up to magic or gods, as there are none. I am not averse to inventing materials/minerals/systems etc., like I said above to explain them. My question is, is this feasible and how far would I go to invent constructs that ensure the planet can harbor life in this fashion?