Solaris at Busworld Kortrijk 2013
At this year’s Busworld Kortrijk, Solaris presents its expanded offer of solutions for sustainable public transport. Two years after the premiere of the first Solaris electric bus, the company unveils further innovations. The Solaris Urbino 12 electric at the show is equipped with a new automatic roof-mounted system for conductive fast charging. A Solaris InterUrbino 12 with Cummins ISB6.7E6 engine and a Solaris Urbino 18 with DAF MX-11 unit represent Solaris’s range for the Euro 6 emissions standard. Solaris Urbino electric: ready for all-day electric operation. A new system developed by Solaris ensures fast and fully automatic charging of battery buses and additionally guarantees low operational costs. A roof-mounted connector – the “pantograph” – is automatically raised when the bus approaches a charging station. The external part of the system likewise is ready to start its work as soon as the bus stops. Its connector is mounted under a platform, which is installed above the road and which connects to a stationary DC charger. The roadside infrastructure has been designed for easy installation in existing bus stops or on dedicated support pillars. Upon connecting, electrical grounding is established before the two poles of the charging connection become active and the fast-charging process starts with a power of 200 kW. Solaris's system provides a significant degree of tolerance for the positioning of the bus at the charging station, which ensures that the batteries can be topped up reliably. The roof-mounted connector on the bus has a sideways flexibility of up to one meter, while the length of the station's connector - which gives lengthways tolerance - is at least two meters and can be further extended to suit local requirements. This conductive charging system keeps the amount of time necessary to top up energy levels in the on-board batteries as short as possible. Between two and four minutes can be enough to ready the Urbino electric for the trip along the line. The new conductive charging system allows the use of smaller batteries (60-80 kWh), which results in a lower empty vehicle weight and therefore raises the passenger capacity of the bus. The electric bus presented in Kortrijk is equipped with an 80 kWh battery. Accordingly to customers’ requirements, 105, 120, 210 and 240 kWh batteries are also available. This enables operators to choose the specification most suited to their requirements and route demands. Solaris will also continue to offer two other possibilities to charge the batteries of its electric buses. These are the “plug-in” solution using conventional plug connections, and contactless inductive charging, which allows buses to be charged automatically at bus stops and termini that have been fitted with induction coils under the road surface.