Kabushiki Kaisha Yaskawa Denki

Kazuhiro Umeo

Eiji Yamamoto

Taisuke Katayama

Ryuji Suenaga

Mitsutaka Ono

Mineyasu Morimoto

Eiji Masuda

A loading/unloading apparatus includes a cage configured to accommodate an electric appliance stored or to be stored in one of storage compartments provided within a cubicle; and a hoist configured to vertically move and hang the cage. The hoist includes a boom arranged on the cubicle to extend above the storage compartments and a hoisting winch attached to the boom. The cage includes a frame body provided with a seat for supporting the electric appliance, and a connector unit connected to the hoisting winch.

Loading/unloading apparatus

A series-connected multi-level power conversion device according to an aspect of embodiments includes a multi-winding transformer and a power conversion unit. The multi-winding transformer has a relationship that n secondary windings respectively connected to n single-phase power converters in the same output phase have a voltage phase difference of 60/n degrees and a relationship that the m secondary windings respectively connected to the m single-phase power converters corresponding to the m output phases have a voltage phase difference of 60/m degrees.

Series connected multi-level power conversion device

Growing community of inventors

Kitakyushu, Japan

Kazuhiro Umeo