High-voltage DC trailing cable systems for mobile machinery

With trailing cable systems electric energy can be supplied continuously to mobile machinery, without the need of refueling or recharging batteries. In the first part of this paper a literature survey on state-of-the-art trailing tethered machinery is given and an alternative electric architecture based on high-voltage DC transmission is introduced. In the second part, an overview of DC-DC converter technology is given and a suitable concept for the problem at hand is proposed. To reduce the voltage across the semiconductors, a modular converter concept is presented, to realize compact converters for implementation on machines.