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For the German group Kiepe Electric, now being sold by Knorr-Bremse, Busworld Europe 2023 is set to be the opportunity for the world premiere for mobile High-Power Charging (mHPC) with the K-Charger, which charges electric buses with up to 800 kW in mere minutes.
Kiepe Electric Mobile High-Power Charging (mHPC) with K-Charger “opens up a completely new charging strategy for transit authorities by quickly charging battery electric buses”, Kiepe states.
And adds: “Charging takes place with up to 800 kW of power in mere minutes. The K-Charger can make use of an existing power supply such as the catenary of regional and long-distance rail or the urban LRV or subway networks. Either complementing or as an alternative to overnight charging, mHPC from Kiepe Electric uses existing electric power infrastructure for charging“.
Kiepe Electric is mostly known for its In Motion Charging (IMC) technology, widely adopted (a real standard) in the trolleybus segment. IMC buses charge their batteries via an overhead line while in motion and can travel 20 kilometers or more off wire. Kiepe Electric supports and advises the operator using extensive route simulations and thus ensures an optimized system of vehicle and infrastructure. The result can be a significantly simplified infrastructure and overhead line sections reduced by up to 80%. This means that suburbs can be reached without overhead lines and existing routes can be easily expanded.
In order to make switching between routes with and without overhead lines as easy, safe and quick as possible, Kiepe has developed the new Intelligent Current Collector (ICC). This new generation of current collector system can rewire both vertically and laterally, which allows the current collector poles to be rewired at any point in the overhead line network. This saves time-consuming manual rewireing. The ICC is a compact design with optimized geometry. This creates space for additional components such as traction batteries, cooling units or heat pumps on the vehicle’s roof. Thanks to the simple interfaces and the plug-and-play approach, the new ICC is easy to integrate, both in new and existing vehicles.
Smart Fleet Management (SFM) is an AI-supported energy management software for electric bus fleets. The SFM automatically learns the route information for bus routes and therefore knows or covers the necessary electricity charging requirements at the recharging stations or on the overhead line, the group explains. This effectively reduces “range anxiety”. At the same time, SFM prioritizes charging processes in order to make the best possible use of the network capacity. The primary goal of predictive charging management is to keep the battery in the optimal state of charge (SOC), which has a positive effect on battery life. At the same time, the SFM transmits all recorded information to a cloud based application. All buses can benefit from this charging information, even on routes that they have never operated on previously. In addition, providing the information in a customized dashboard enables transit agencies to generate automated energy balances.
The Kiepe Traction Inverter (KTI) is an innovative converter for battery buses and electric commercial vehicles and, in the function of the traction inverter, a central drive component. Included are the power electronics and the most modern drive control, as Kiepe Electric underlines. The Kiepe Traction Control provides powerful torque dynamics, low energy consumption and strong hill climbing ability. With cyber security and ISO 26262 readyness, the KTI meets the standard for safety-relevant electrical systems in motor vehicles. With its compact design it can be installed anywhere on the vehicle. The KTI in DOUBLE version can use the two motor outputs to control a motor in a double star configuration. The intelligent control can drive both asynchronous and PSM motors (synchronous). As a contribution to preventive maintenance, the KTI and the entire new generation of Kiepe Electric traction devices for electric vehicles can be integrated into Kiepe Fleet Management (KFM).
The managing director of Kiepe Electric, Alexander Ketterl, explains: “As a partner in the design of electric buses, we can offer the successful IMC system platform as well as our new High-Power Charging platform. Visitors to Busworld should not miss our world premiere, the K-Charger, with which we have entered the market for high-end charging stations. A unique electric bus will celebrate its world premiere, Kiepe Electric is a consortium partner, supplying the entire electric system. We make full use of our system integration expertise, from traction and battery systems to software solutions and smart fleet management.” An additional product focus of Kiepe Electric as a contribution to climate-friendly public transit is the ISO26262-ready Kiepe Traction Inverter (KTI).
