![]() The project was funded through a Federal Transit Administration TIGGER grant for $2.7 million to develop this WPT technology. The charging pad can accommodate variable vehicular use, whether streetcars, SOVs or delivery trucks. Smith said no moving parts needed to connect to charge also means less in maintenance costs. Powering frequently during operation, it enables the use of a smaller battery – saving weight and money. The bus will charge for five minutes at each end of the route. It also means the charging doesn’t interfere with such things as pacemakers. The system meets the International Standard for Electromagnetic exposure to humans so people can walk across the pad with no safety concerns. The embedded charging pads are about 3-feet square and work through ice, mud or snow on the road. There isn’t any infrastructure for alignment only visual cues are needed. WAVE Chief Development Officer & Founder Wesley Smith explained it has 90 percent efficiency, comparable to conductive which is typically 92 percent. The charging plates are flush-mount in the ground and there is a 7.5-inch gap between the pad and charger. Receivers in the plate under the bus convert the magnetic field to a DC voltage output which charges the battery. As the AC voltage passes through a transmitting coil, it is turned into a high-frequency magnetic field. When the bus pulls over the pad, the charging plate that is underground converts direct current voltage to high-frequency alternating current. There is a charging plate attached to the undercarriage of the bus and one in the ground. The WPT technology happens magnetically - no wires, no connectors. The weight of the charging plate adds about 100 additional pounds to the vehicle. The university purchased the Complete Coach Works ZEPS bus, a retrofitted Gillig. UTA General Manager Mike Allegra said the university looks at the route as a “moving walkway” to move people across campus quickly - and quietly. The route is a 1.5-mile, 10-minute route that cuts through campus, connecting to a UTA Trax station. Utah Transit Authority has been working with Utah State University and WAVE Technologies Inc., a spin-out company from USU, in operating an all-electric bus that runs on wireless power transfer (WPT) technology. The bus often charges at a strategic bus stop, such as end of route, where they need to accommodate the additional time to connect to the power source and charge. Narrowband DFR testing capabilities from 1 - 500 Hz.When it comes to the challenge of operating all-electric transit buses, keeping the bus powered to run the route is typically met with a plug-in charge, undercarriage connection or overhead catenary. ![]() This is of particular value to oil-paper insulation systems, for which a stepped voltage test is not normally performed. Automatic detection of voltage dependence and alert to run a tip-up test. Voltage Dependence Detecion (VDD - Megger innovation).True correction based on dielectric response analysis. Individual Temperature Correction (ITC - Megger innovation) for accurate and automated temperature normalization to 20 ☌, to avoid use of outdated correction tables.Tan delta / power factor testing at 12 kV and 500 mA for successful testing of high capacitance objects without the use of an external inductor.Its unique features allow better assessment of the insulation system. With the TDX120 add-on, the TRAX becomes are the most advanced tan delta /power factor testing instrument on the market. Best-in-class tan delta / power factor testing ![]()
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