Asynchronous traction motors for electric trains, metro and high-speed rail, 100–375 kW

Description

Asynchronous traction motors are intended for multiple-unit rolling stock: metro, suburban and inter-regional electric trains, diesel multiple units and high-speed trains. The company has supplied traction motors for more than a hundred years; total deliveries exceed 72,000 units, and the plant in Japan produces up to 300 traction motor sets per month. The range is built as a combination of three elements — cooling system, rotor design and options — and each model is designed for the traction characteristics of a specific train using the finite element method. Typical designs: an open motor with self-ventilation and copper rotor, with the option of a filterless cooling system (226 kW for Class 800 and 250 kW for Class 385, UK); an open motor with aluminium rotor (210 kW for the high-speed Class 395, 100 kW for the Osaka Monorail 3000); a motor with forced ventilation and copper rotor (300 kW and 431 kg for Shinkansen E5 at 320 km/h, 375 kW for the Trenitalia Masaccio hybrid train); a totally enclosed motor with self-ventilation and copper rotor (190 kW for Sagami Railway 20000). The filterless cooling scheme eliminates monthly cleaning of air filters and reduces dust cleaning of the rotor during overhaul. The totally enclosed design reduces noise by about 20% compared with the open design and extends the overhaul interval, while the bearing replacement system without removing the rotor reduces the labour of this operation by 70%. The efficiency of modern totally enclosed asynchronous motors is about 97%. The motors can be equipped with sensors for IoT systems and condition-based maintenance (CBM). Welding production is certified to EN 15085-2 (TÜV Rheinland Japan), and the management system to ISO 9001 and ISO 14001.

Technical specifications