Development of High Speed Motor and Inverter for Electric Supercharger Mitsubishi Electric Corporation

Format:

Conference/Event

Author/Creator:

Nishiwaki, Nishiwaki, author.

Contributor:

An, Byeongil

Goto, Takashi

Iezawa, Masahiro

Tanaka, Hideyuki

Conference Name:

SAE 2013 World Congress & Exhibition (2013-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

In recent years, the fuel consumption improvement of automobilesis indispensable due to the global move to reduce CO₂ emissions.Downsizing of engines by turbocharger obtains the output equal to alarge engine, and improves the fuel consumption. However,turbocharger has the response delay called turbo lag. In order toimprove a transient response, we developed a high-speed motor. Theelectric supercharger consists of high-speed motor and compressor,and drives compressor by high-speed motor instead of an exhaust gasturbine. By combining conventional turbocharger and electricsupercharger, we developed two-stage turbocharger system.In this paper, we explained development of high-speed motor andinverter. And, as application example, we explained electrictwo-stage turbocharger system. The high-speed motor and inverterare connected without harness, and assembled in one single unit.The motor is driven at high efficiency by vector control. Theperformance test shows a high speed response of 0.7 secacceleration time from zero to maximum speed 90,000 rpm. Electrictwo-stage turbocharger, applying high-speed motor, is evaluated byengine simulation tool (GT-Power) and engine bench test. As aresult of engine test using a 1.5-liter gasoline engine, theelectric two-stage turbocharger demonstrated the 43% improvement ina response time at 1500 rpm, compared with normal two-stageturbocharger. This experiment shows that electric supercharger iseffective to improve transient response. It is expected tocontribute ever tightening CO₂ reduction with automobile enginesfrom now on

Notes:

Vendor supplied data

Publisher Number:

2013-01-0931

Access Restriction:

Restricted for use by site license