Three-phase inverter VVVF

pulse width modulationvariable-speedfor railway applications

Overview
Traction inverter designed for railway rolling stock using silicon carbide (SiC) devices to achieve lower energy losses and reduced size and mass. Suitable for a wide power range and configurable to various specifications.

Features

• Silicon carbide technology: Next-generation SiC semiconductors used to reduce switching losses and improve efficiency.
• Reduced power consumption: SiC-based design achieves approx. 40% reduction in energy loss compared with conventional silicon inverters.
• Compact size and lightweight: Inverter volume and mass reduced by approx. 40%, enabling space- and weight-saving vehicle designs.
• Experience: Mitsubishi Electric has supplied traction inverter systems since 1995, delivered to over 85,000 cars worldwide.
• Mass customization concept: Modular design covers a wide power range and can be adapted to varied customer specifications.

Technical specifications

• Technology: Silicon carbide (SiC)-based VVVF inverter
• Energy loss reduction: approx. 40% (SiC vs. conventional Si)
• Volume and mass reduction: approx. 40%
• Application: Traction inverter for railway rolling stock
• Service record: In service since 1995; delivered to over 85,000 cars
• Design concept: Wide power range with mass customization to meet varied specifications