Second Life and Wireless Testing Facility

Submitted by StephBonehill on Thu, 09/23/2021 - 15:50

Second life applications relate to the point when a battery has deteriorated such that it is no longer useful in a vehicle. At this point it can still be adapted for many other purposes including domestic properties. These new facilities at Warwick include a bespoke power system providing 500-kVA bidirectional power transfer capability between the mains and a DC micro grid within the facility at 750 V DC. The DC micro grid allows for power transfer between the various systems connected to it without requiring exporting/importing of this power to and from the mains. This has the potential to increase efficiency and, with energy storage systems becoming more common, is of interest as a method of local power distribution.

Inductive (or wireless) charging is a rapidly growing technology area and the UoW are looking at ways in which the process can be made more efficient and cost-effective and applied to a variety of uses. This facility allows for future installation / demonstration of wireless charging equipment in a realistic scenario. The facilities feature a configurable pit in the ground outside the facility for installation of ground-assembly equipment (wireless pads), running boards to enable a vehicle to park above the pit for testing/demonstration and a small kiosk for housing of the power electronics that would drive the wireless pads as well as monitoring / control equipment. Cable ducting and initial cabling exists between the wireless charging kiosk and the 2nd life building are provided to enable power to be provided from that building to the wireless charging system (either directly from the 750V DC micro grid or from one/both of the 128kW bidirectional lab power supplies).





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