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Propulsion inverters (also known as VVVF inverters) are the control mechanisms that change the power supply of the train into a form that may be used to drive the traction motors.
These inverters convert incoming DC power to AC power and regulate how much power is provided (voltage and frequency) in response to factors like the train’s speed and other factors.
Additionally, as the train slows down, these inverters have the ability to regenerate power from the motors. Propulsion inverters support the train’s smooth takeoff, stop, acceleration, and deceleration in this way.
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The Global Rail SiC VVVF Inverter Market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
The silicon carbide (SiC) variable voltage variable frequency (VVVF) traction inverters and entirely enclosed Permanent Magnet Synchronous Motors (PMSM) were used in the first train propulsion systems ever delivered by Toshiba Corporation.
For the third series of trains on the Ginza Line, the propulsion systems were delivered to Tokyo Metro Co., Ltd. in Japan. Tokyo Metro provided an explanation of the technology features today at the Toshiba stand at InnoTrans, an international trade show for transportation technologies.
The new propulsion systems function more efficiently in terms of power conservation. In comparison to Ginza Line series trains that incorporate a PMSM main circuit system, the integration of a filter reactor, and a control system to eliminate current noise, supports the system in reducing powering, and acceleration of the train caused by delivery of power supply, and improving regenerated energy.
The new method significantly reduces total power consumption compared to the induction motor (IM) main circuit system used in Ginza Line series trains.
