SiC MOSFETs and SiC Schottky Diodes in TO-247-3L＆4L for Sustainable Public Transportation
The EU, EFTA, and UK region saw a rise in electric bus registrations, with nearly 7,200 units now registered. ACEA (The European Automobile Manufacturers Association) reported a 39.1% increase in electric bus registrations in Europe last year, with notable growth in the top three markets: France (+221.3%), Spain (+172.4%), and Germany (+37.5%). Although buses powered by alternative sources are gaining popularity, diesel still holds the largest share at 62.3%, down from 66.9% in 2022. Bus and coach manufacturers continuously develop cleaner and greener models to reduce road transport CO2 emissions. However, they cannot overcome the challenges alone. Public transport and coach operators need to invest in and operate new models profitably.
According to ACEA, buses are the most widely used form of public transportation in the EU, accounting for over half of all public transport journeys. They have the lowest carbon footprint of any motorized transport, making them an essential public service and a significant contributor to decarbonization.
Power components by DIOTEC Semiconductor play an important role when it comes to electric mobility in general and "green" public transportation in particular. Starting from dedicated bypass diodes for solar panels, which can be found nowadays not only on the roofs of bus depots but more and more on every bus stop shelter. While the huge PV installations on bus depots are capable of charging up the bus fleet, the smaller ones at bus stops are used to light up the shelter at night and to run passenger information systems. Charging stations are the next big field where Silicon Carbide (SiC) devices are used. You might have seen already terminal stops with an overhead power connector. Whenever a bus stops over, its pantograph moves up and charges up the battery. The power electronics for charging are either stationary or integrated on-board into the bus. SiC MOSFETs and SiC Schottky diodes by Diotec help in either place to reduce energy losses and improve the performance of the converters. The drive inverter is finally the part that turns the motors and moves the coach forward and in consequence its passengers. Diotec offers a lot of automotive-qualified parts used for auxiliary functions in the battery management system, the drive electronics, oil and cooling water pumps, the passenger air conditioner, and so on.
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