Mitsubishi Electric Corporation

Takayoshi Shimada

Yasuhiro Tanimura

Noboru Wada

Gaku Oinuma

Katsuhiko Kibe

The present invention provides a method for reducing concentrations of ozone and nitric acid produced in cooling air flowing through a circulating airflow path of a rotary electric machine, the method including: disposing an ozone decomposition unit containing an ozone decomposition catalyst in the circulating airflow path; and allowing the cooling air to pass through the ozone decomposition unit so as to decompose ozone and to suppress production of nitric acid. According to the present invention, the method and device are capable of reducing the concentrations of ozone and nitric acid produced in the cooling air flowing through the circulating airflow path of the rotary electric machine for a long period of time while preventing pressure loss.

Method and device for reducing concentrations of ozone and nitric acid generated in cooling air flowing through circulating airflow paths in rotary electric machines

Growing community of inventors

Tokyo, Japan

Takayoshi Shimada