392 EngineeringeTransport 118 (2020) Heft 10 Conductive ground level power supply for electric roads Patrick Duprat, Saint-Ouen (FR) As a promoter of sustainable mobility and a pioneer in ground-based feeding solutions for urban rail transport, Alstom extends the use of its APS (alimentation par le sol) technology to road transport, accompanying the shift from petrol- and diesel-powered vehicles to electrically powered vehicles. The APS supplies electricity to vehicles at ground level by means of a segmented conductive rail installed on the road surface. The APS for road solution is based on the same technology because it offers a safe and efficient feeding system that can be used to supply power or recharge the batteries of a large range of electric vehicles. Elektrisch leitende Bodenenergieversorgung für Straßen Als Förderer nachhaltiger Mobilität und Pionier bei der Einspeisung aus der Fahrbahn (alimentation par le sol, APS) für den städtischen Schienenverkehr weitet Alstom den Einsatz seiner APS-Technologie auf den Straßentransport aus und begleitet damit die Umstellung von Benzin- und Dieselfahrzeugen auf elektrisch betriebene Fahrzeuge. Das APS versorgt Fahrzeuge vom Boden aus über eine segmentierte, auf der Fahrbahnoberfläche installierte Leiterschiene mit Strom. Die Lösung APS für den Straßenverkehr basiert auf der gleichen Technologie, da sie ein sicheres und effizientes Einspeisesystem bietet, das zur Stromversorgung oder zum Aufladen der Batterien einer großen Anzahl von Elektrofahrzeugen verwendet werden kann. Captage direct au sol des routes électriques En tant que promoteur de la mobilité durable et pionnier des solutions d’alimentation par le sol (APS) pour le transport ferroviaire urbain, Alstom étend l’utilisation de sa technologie APS au transport routier, en accompagnant le passage des véhicules à essence ou diesel aux véhicules électriques. L’APS fournit de l’électricité aux véhicules au niveau du sol au moyen d’un rail conducteur segmenté, installé sur la surface de la route. La solutionAPS pour la route est basée sur la même technologie car elle offre un système d’alimentation sûr et efficace qui peut être utilisé pour alimenter ou recharger les batteries d’une large gamme de véhicules électriques. 1 Introduction One of the pillars of Alstom’s strategy is to innovate by pioneering smarter and greener mobility solutions. This leads the company to develop solutions beyond the traditional rail market. As examples of these new fields of innovation, Alstom has developed a full electric bus called APTIS, is involved in autonomous shuttles with Easy Miles, and is developing charging solutions for road vehicles. Alstom has a long expertise in power supply and catenary systems, but has also developed innovative charging solutions using energy transfer from conductive segments installed on the ground surface. This started beginning of 2000 with the development of the APS system for tramways. APS is a service-proven solution for catenary-free tramway operation, which preserves the aesthetics of city centers, reduces the footprint of the LRT system by eliminating poles, and optimizes safety and operation reliability. The key advantages include no electrical power limitation, no risk of running out of power in degraded operation mode, full compatibility with all types of road and track-bed surfaces, and easy line extensions. With the APS system, the power is supplied to the tram vehicle through a segmented street-level power rail embedded between the running rails in the axis of the track. Conductive segments are switched from off to on to off as the tram progresses, ensuring total safety for pedestrians. The APS third rail is made of 8m long conductive segcontact shoes and antennae switching cubicle conductive segment 8 m power boxes unit insulated segment 3 m back-up batterie unit Figure 1: Alstom APS System for trams (source: Alstom).
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