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“At the Hannover Fair in 2012, we sealed our cooperation with a handshake,” said Kuno Winkelheide, KEB Applications Engineer in the field of e-mobility. At the exhibition, young engineers from the University of Siegen in Germany came to the KEB stand in search of suitable inverters for an electric racing car.
A few weeks ago, the 2019 Formula Student car – christened “Molly” – was unveiled by the students. Initially, F5 drives from KEB were used, but now the team uses KEB COMBIVERT H6 drives. The advantage of the H6 drive is its modular design, which also makes it a pioneer for KEB’s recently launched COMBIVERT T6 APD (Auxiliary Power Drives) e-mobility solution. “This allows the S3 Racing Team to adapt the size of the inverter drives to the requirements of an electric racing car,” added Winkelheide.
This means that the components can be installed where there is space. “To place four times 75 kilowatts in a ‘small shoe box’ is already an exciting accomplishment by the students,” commented Winkelheide, enthusiastic about the performance of the young engineers.
Transfer of knowledge
KEB is wholeheartedly supporting the S3 racing car team. “Of course, racing cars fascinate many people,” said the experienced engineer, “but for us, it’s also an important connection to science.” In addition to the transfer of knowledge, several of the engineers of the first S3 team now work at KEB in control and automation.
And it is precisely this that the new e-mobility solution for auxiliary power drives in commercial vehicles benefits from. The former racing engineers are now part of the development team for the COMBIVERT T6 APD. In this way, fully electric or hybrid buses, excavators and transporters are already being operated using racing know-how.
The drive of the future
The COMBIVERT T6 APD from KEB Automation is a modular, scalable combined drive & controller system for hybrid and electric vehicles. The system can be adapted to suit specific customer requirements and associated drive functions, particularly applications in wholly- or partly-electrified trams, buses, trains, agricultural and construction vehicles and Light Commercial Vehicles (LCVs).
In urban transport, conventional vehicles consume up to 30 percent of the energy purely for the auxiliary drives and so the potential for energy savings is significant. Converting to electric auxiliary drives means improved energy efficiencies and greater controllability. Various applications on the vehicle can be controlled individually (e.g. power-on-demand) and therefore more efficiently, while optimising processes to meet the precise needs of the vehicle. This can lead to significant reductions in vehicle noise and CO2 emissions.
Regardless of whether energy is produced or provided by diesel generators, fuel cells, battery packs or supercapacitors, the COMBIVERT T6 APD offers a connection or adaptation facility to suit all vehicle energy sources. This means auxiliary drive components such as air conditioning, air compressors, hydraulic pumps, Power Take Off/Shaft substitutes and ventilators can be decoupled from the combustion engine (main drive) and installed in the most cost effective or mechanically favourable position on the vehicle.
The capabilities of the T6 APD controller are efficient, on-demand adjustment of voltage, current and frequency in up to six drive/motor axes. The T6 APD controls all types of electric motor, providing automatic motor identification. The controller provides excellent shaft performance, dynamic speed and torque control, as well as a variety of control algorithms, including open-loop control and SCL (sensorless-closed-loop) for synchronous and asynchronous (A.SCL) motors.
For more information, visit: www.keb.co.uk and www.s3racing.de
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