Abstract: A gate driving power source device can be miniaturized by sharing power source units, and a large current can be prevented from locally flowing in a single chip even when a short-circuit failure occurs in a multi-phase conversion circuit included in a power conversion device. There is provided a shared power source unit supplying a shared DC power source to a gate drive circuit provided in any one of a plurality of lower arms of multi-phase conversion circuits or any one of a plurality of upper arms of the multi-phase conversion circuit and gate drive circuits provided in upper arms or lower arms of other conversion circuits.

Abstract: An electric motor (10) includes a stationary shaft-shaped central portion (100) extending through respective central portions of an inner rotor (301), an outer rotor (302), and a stator (200), and a cooling structure (400) provided using the interiors of the stator and the shaft-shaped central portion. The motor can be used as an in-wheel motor for directly driving each wheel of the motor vehicle.

Abstract: An electric motor (10) is an in-wheel motor. The motor (10) includes an outer rotor, (302), an inner rotor (301), a stator (200), and a shaft-shaped central portion (100). The outer rotor includes a magnet (305b) and is disposed closely to a load. The inner rotor includes a magnet (305a) and is disposed away from the load. The stator is disposed between the outer rotor and the inner rotor, and includes a stator coil. The shaft-shaped central portion extends completely through respective central portions of the outer rotor, the inner rotor and the stator. The shaft-shaped central portion defines a stationary structure. A power supply system (500) is provided using interiors of the stator (200) and the shaft shaped central portion (100).

Abstract: An electric motor (10) includes a stationary shaft-shaped central portion (100) extending through respective central portions of an inner rotor (301), an outer rotor (302), and a stator (200), and a cooling structure (400) provided using the interiors of the stator and the shaft-shaped central portion. The motor can be used as an in-wheel motor for directly driving each wheel of the motor vehicle.

Abstract: An electric motor (10) is an in-wheel motor. The motor (10) includes an outer rotor, (302), an inner rotor (301), a stator (200), and a shaft-shaped central portion (100). The outer rotor includes a magnet (305b) and is disposed closely to a load. The inner rotor includes a magnet (305a) and is disposed away from the load. The stator is disposed between the outer rotor and the inner rotor, and includes a stator coil. The shaft-shaped central portion extends completely through respective central portions of the outer rotor, the inner rotor and the stator. The shaft-shaped central portion defines a stationary structure. A power supply system (500) is provided using interiors of the stator (200) and the shaft shaped central portion (100).

Abstract: In a gas turbine power generation system having a gas turbine engine and a generator connected to the engine, maintenance ease is enhanced by forming the housing to have openable maintenance faces at two of its faces. Installation space is reduced and a compact configuration is achieved by providing a partition that divides the interior space of the housing into two regions into an upper bay and a lower bay, mounting the engine in the upper bay and mounting air intake duct in the lower bay at a location directly under the engine. Noise is reduced by using a partition to define two separate spaces (bays) and mounting the engine and the air intake duct in the upper and lower bays. Noise is also reduced by preventing engine rotation noise from escaping to the outside through the air intake duct.

Abstract: In a gas turbine power generation system having a gas turbine engine and a generator connected to the engine, maintenance ease is enhanced by forming the housing to have openable maintenance faces at two of its faces. Installation space is reduced and a compact configuration is achieved by providing a partition that divides the interior space of the housing into two regions into an upper bay and a lower bay, mounting the engine in the upper bay and mounting air intake duct in the lower bay at a location directly under the engine. Noise is reduced by using a partition to define two separate spaces (bays) and mounting the engine and the air intake duct in the upper and lower bays. Noise is also reduced by preventing engine rotation noise from escaping to the outside through the air intake duct.