Single-phase inverter for electric trains

What is a traction inverter system?

Assuming systems for conventional lines in Japan, one traction inverter system drives four induction motors of up to 220 kW connected in parallel as the specifications. A traction inverter system consists of a line breaker circuit, power unit, and gate control unit. The LV100 SiC power module enables the cooler to be compact and the

When was a single phase Railway built?

Hungary first constructed a single-phase AC 16-kV 50-Hz railway in 1932 [20, 21]. During the same period, Germany, the former Soviet Union, etc., tested prototype locomotives driven by rectifying devices and DC motors, which were also powered by single-phase power frequency AC voltage [20, 21, 22, 23, 24].

When was a single phase AC 25 kV 50 Hz test railway developed?

In 1950, a single-phase AC 25-kV 50-Hz testing railway built in France was successful [13, 18]. After that, this TPS was widely applied in trunk electrified railways of France, China, Japan, Russia, India, etc., which was attributed to its superior power supply capacity and simple infrastructure.

Does Mitsubishi Electric traction inverter save energy?

Mitsubishi Electric delivered traction inverter systems with 3.3-kV full-SiC power modules for the remodeled series for the first time in the world and demonstrated the energy-saving effects. In February 2016, we received the Excellent Energy-Saving Device Award from the Japanese Minister of Economy, Trade and Industry jointly with Odakyu.

Are traction inverter systems better than remodeled 5000 series?

Traction inverter systems for the 5000 series are smaller and lighter: the volume was reduced by about 30% and the mass by about 20% compared to the traction inverter systems for the remodeled 1000 series. MELCO conducted the performance confirmation test of the traction inverter systems for the 5000 series on an Odakyu main line.

How do power converters work?

Then, power converters composed of fully controlled power electronic devices are installed between the rail and the return wire to change the power flow distribution of the traction return current.