Railcar Traction Inverter By Mitsubishi

by David Corn | Wednesday, Jun 24, 2015 | 1463 views

Mitsubishi Corporation has announced today its main circuits detailing traction inverter made with all-silicon carbide (SiC), which were installed in a 1000 series urban train operated by Odakyu Electric Railway Corporation Ltd. In Japan, it has been verified to attain an approximate 40-percent savings in power usage compared to a train using accustomed circuitry. The traction inverter, which is rated for 1,500V DC catenaries, was tested over a four month period.

Railcar-Traction-Inverter

 

The test mensuration of power use and electric power revitalization ratio of the two cars main circuits, which consist traction inverters, high proficiency main motors and filter reactors. Odakyu Railways 1000 series passenger train realizes dramatic cut in energy ingestion.

Specs Of Circuits

Input voltage: 1,500V DC
Main circuit system: Large-capacity all-SiC power modules
Two-level PWM inverter with regenerative brakes
Control system: Four traction motors with 190kW, parallel control
Cooling system: Self cooling

Between 17 January and 8 May, the following results average values were recorded a 17% power saving during powered operation an increase from 34.1% to 52.1% in the power regeneration ratio calculated as power from regenerative brakes to catenaries divided by total electric power to drive the rail car and 40% power savings overall. The verification compared a car retrofitted with an all-SiC traction inverter and another car fitted with a conventional gate turn-off thyristor traction inverter, both of which were put into actual commercial service.

About Mitsubishi

The Corporation Mitsubishi is well recognized in all over the world by their brilliant technologies and electronic stuff. It is well known as world leader in the manufacture, marketing and sales of electrical and electronic equipment used in information processing and communications, space development and satellite communications, consumer electronics, industrial technology, energy, transportation and building equipment. Mitsubishi Corp. elbow greases to be a global, leading green company, enriching society with technology. The company recorded associated group sales of 4,323.0 billion yen US$ 36.0 billion in the fiscal year ended March 31, 2015. Comprehended the spirit of its corporate statement, Changes for the Better, and its environmental statement, Eco Changes.

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