There is provided a planetary reduction gear 10 between a gas turbine 1 and a generator 5. The planetary reduction gear includes elastic deformation means 12 on an output side, and for the elastic deformation means, a strain energy within an elastic limit ...

A state detecting system (1006) which can detect state of power storage (101) at high precision even with lesser characteristic data to be used for calculation, and a device employing the same. The state detecting system has a memory (103) for storing a ch...

The power source apparatus for an electric automobile is provided with a battery system, having a driving battery to power an automobile driving motor and a battery control circuit to control driving battery charging and discharging as well as to compute d...

A power controller for a vehicle can operate electrical load upon stopping of engine or turning OFF of a key switch, and lowering of remaining capacity of a main battery (1) can be prevented. The control system has a control portion controlling operation o...