Mitsubishi Electric Corporation

Nobuaki Muroki

Atsushi Yamamoto

Takeshi Nakamura

Haruyuki Kometani

Yuji Takizawa

Norihiko Hana

Kenta Motoyoshi

Susumu Maeda

Kohei Samata

Ryutaro Kawaguchi

Provided is a short-circuit detection device including: a signal acquisition unit configured to acquire, from a magnetic flux detector configured to detect a magnetic flux generated in an air gap between a rotor and a stator of a rotating electric machine, a detection signal corresponding to the magnetic flux; a signal processing unit configured to subject the detection signal acquired by the signal acquisition unit to filtering of removing at least one component of odd-order components included in the detection signal, to thereby generate a filtered signal being the detection signal subjected to the filtering; and a short-circuit detection unit configured to detect a short circuit of a field winding through use of the filtered signal generated by the signal processing unit.

Short circuit detection device and short circuit detection method

In a rotary electric machine, a rotor including a rotor shaft and a rotor main body provided to the rotor shaft. A baffle plate, which is fixed at a plurality of positions to an end portion of the rotor main body in the axial direction, and is configured to define an airflow passage for cooling gas. Further, the baffle plate is segmented into a plurality of baffle segments which are arrayed in a circumferential direction of the rotor. The baffle segments each include an overlapping portion which overlaps an adjacent baffle segment in an axial direction of the rotor.

Rotary electric machine

Growing community of inventors

Chiyoda-ku, Japan

Nobuaki Muroki