Siemens supplies high-power charging (HPC) stations for electric buses, rated at levels 150kW, 300kW and 450kW
Siemens has signed a three-year contract with Danish transport agency Movia to deliver charging stations for electric buses in Denmark. The scope of work includes installation, commissioning, civil engineering works and the Siemens remote monitoring system eBus cloud, which comes with six-year service contract.
Forty-five municipalities, including the city of Copenhagen and Region Zealand, could benefit from the contract. Siemens will provide high-power charging (HPC) stations, with power levels of 150kW, 300kW or 450kW.
The charging process used in the HPC system is controlled by the battery-management system of the electric bus under standard protocol ISO 15118. In addition, the control pilot circuit defined by the international standard DIN EN 61851 provides a manual control over the charging process to ensure the highest safety standards.
Power is delivered to the electric buses via a top-down pantograph mounted to a mast.
The charging process is initiated when the electric bus arrives on the charging mast and a Wi-Fi communication is established. In order to charge the batteries, the bus stops underneath the charging mast. As soon as the driver has activated the hand brake, the charging process is started automatically and the four-pole pantograph connects with the bus. The buses are equipped with contact rails on the roof above the front axis of each electric bus. Once the driver releases the hand brake, the charging process will be stopped and the pantograph will be automatically raised to the upper position, and the bus is allowed to leave.
The charging time could take between 4 to 6 minutes during the scheduled waiting time at a bus stop. The charging infrastructure can be used by several buses per hour, and will accommodate buses from different manufacturers.
Siemens technology is already deployed on bus routes in Hamburg, Stockholm and Gothenburg, Drammen and Oslo, and Montreal.
In 2017, forty-five municipalities and two regions of Zealand agreed to aim for CO2-neutral bus transport by 2030 as part of Movia’s Mobility Plan 2016. In addition, the municipality of Copenhagen intends to become the world’s first CO2-neutral city in 2025.