Mitsui Group is one of the largest keiretsu in Japan and one of the largest corporate groups in the world.The major companies of the group include Mitsui & Co. , Sumitomo Mitsui Banking Corporation, Sapporo Breweries, Toray Industries, Mitsui Chemicals, Isetan Mitsukoshi Holdings, Sumitomo Mitsui Trust Holdings, Mitsui O.S.K. Lines and Mitsui Fudosan. Wikipedia.
Mitsui Engineering and Shipbuilding Co. | Date: 2013-01-23
[Object] An object is to provide an induction heating method having a high power factor in which when thermal processing is performed through a plurality of heating coils receiving the supply of the current to generate mutual induction, it is possible to easily and rapidly perform synchronization control on a coil current and in which when the current is varied, even if the speed of control on the current value is increased, this little affects an inverter phase angle. [Solving means] In an induction heating method using an induction heating device that heats an item to be heated and includes a plurality of self-resonant circuits to which a resonant high-frequency power supply feeding currents of equal frequency to a plurality of heating coils receiving the supply of the current to generate mutual induction is connected, the phases of impedances within a system are made to coincide with each other to minimize the phases. From the time of starting up, the phase is made to become an inverter phase that can bring the phase difference of the currents close to zero. Control on the frequency and the current value is performed so that the inverter phase is controlled within a given range.
Mitsui Engineering and Shipbuilding Co. | Date: 2014-03-27
Mitsui Engineering and Shipbuilding Co. | Date: 2014-01-16
A wave power generation device which eliminates addition of an adjustment mechanism relating to a change in a mass or a shape to a float and an external sensor such as a wave meter and can improve power generation efficiency by synchronizing a vertical movement of the float with all the wave periods while a manufacturing cost of the wave power generation device is suppressed and a method of controlling the same are provided. A wave power generation device has a controller which controls a torque of a power generator, and the controller has a configuration in which a displacement and a speed of a float are estimated from data of a rotation number or a rotation speed of the power generator, a wave period is estimated from the displacement and the speed, and a displacement coefficient corresponding to the wave period is determined from a data table stored in advance and a configuration in which a calculated product of the displacement coefficient and the displacement is transmitted as a torque command to the power generator so as to control a torque of the power generator.
Mitsui Engineering and Shipbuilding Co. | Date: 2014-02-21
A layer-forming device includes a feeding mechanism that feeds a substrate during layer formation, an injector unit having a plurality of injectors that supplies a layer-forming gas to the substrate, along a feeding passage of the substrate, and a reactant supply unit which generates a reactant. The injector unit supplies the reactant through gaps between the injectors to a layer of the layer-forming component. A substrate opposing surface of the injector includes a layer-forming gas supply slot through which the layer-forming gas is output, first gas exhaust slots that suck an excess gas such as the layer-forming gas, the first gas exhaust slots being provided on both sides of the layer-forming gas supply slot in a feeding direction of the substrate, and inert gas supply slots that supply an inert gas provided on far sides of the respective first gas exhaust slots away from the layer-forming gas supply slot.
Mitsui Engineering and Shipbuilding Co. | Date: 2013-11-08
An electrode material is composed of an electrode active material represented by the general formula LiMPO