Abstract: A power system has a generator, a variable load, and an electrical accumulator unit. The electrical accumulator unit stores power when the generator generates excess power, and supplements power from the generator when the generator generates insufficient power.

Abstract: A modular electrical accumulator unit includes multiple electrical accumulator unit modules, which are operated in conjunction with each other to form a single electrical accumulator unit.

Abstract: A power distribution module has an input line to receive power from a DC power source. A switch selectively opens the input line and blocks supply of power from the input line to an output line to be connected to a DC load. A solid state power control controls a gate drive for the switch. The solid state power control is operable to distinguish between a pre-charge mode, at which current is rushing to supply a capacitor in the downstream DC load, and a short circuit mode, at which a short circuit exists.