Health statuses of components expressing a normal, a suspected faulty or a confirmed faulty condition are estimated. A wobble motor has a stator with a centrally-located core from which arms radiate outward, an electropermanent magnet and coil on each arm, and a rotor exterior to the stator such that the rotor can rotate around the stator arms. The fuel heat exchanger is thermally integrated with an anode tail gas oxidizer exhaust conduit such that in operation an ATO exhaust stream in the ATO exhaust conduit heats a fuel inlet stream passing through the heat exchanger.