My own theory on regenerative shields is that the shields work like any other type of shield. The shields we've seen have been regenerative to an extent. The shield generators are brought back online (The Way of the Warrior
), reassembled (The Survivors
) or simply restrengthened (adding warp power to the shields like in Hero Worship
or The Nth Degree
). In my theory shields spread the force of the energy or the impact over the entire shield area; regenerative shields do that as well and they use some of that energy redirect it to the generators and use it to strengthen the shields. The more hits the shields take the more energy the generators are able to store and use to repower themselves. Eventually the generators do receive to much damage that they can no longer recharge and the shields fail.