Sinfonia Technology Co., Ltd.

Masashi Kutsuna

Takeo Ito

Tsutomu Shinya

Masami Morita

Hiroki Kataoka

Hiroaki Nishiono

Sachiko Shinya, Legal Representative

A smoothing circuitfor an inverter includes a parallel flat plate, a plurality of capacitorsarranged in a matrix and mounted on the parallel flat plate, and a thermal conductive sheetinterposed between the parallel flat plateand a housingin an area overlapping a mounting areaof the plurality of capacitorswhen viewed along a normal direction of the parallel flat plate. The plurality of capacitorsare arranged in such a manner that adjacent terminalsof adjacent capacitorshave a same polarity in a row direction and a column direction.

Smoothing circuit for inverter and inverter for aircraft

An apparatus comprising: a first input that receives a first rotational speed information of a windmill mechanically generated by a mechanical rotation detection unit; a second input that receives a second rotational speed information of the windmill based on an alternating current output of a generator attached to the windmill; and a controller configured to compare the first and second rotational speed information, to determine whether a difference between the first and second rotational speed information is greater than a predetermined value and to execute a predetermined anomaly processing in response to the difference being greater than the predetermined value.

Windmill rotation detection/management device and wind power generation system

Growing community of inventors

Ise, Japan

Masashi Kutsuna