Focus on OLEV: On Line Electric Vehicles

Focus on OLEV: On Line Electric Vehicles

Michela Longo (Politecnico di Milano, Italy), Morris Brenna (Politecnico di Milano, Italy) and Federica Foiadelli (Politecnico di Milano, Italy)
Copyright: © 2019 |Pages: 23
DOI: 10.4018/978-1-5225-5870-5.ch013

Abstract

Many studies on EVs have been performed in recent years, and various EVs have been developed, like pure battery EVs, hybrid EVs, battery replace EVs, or plug-in hybrid EVs, that use lithium (or polymeric) batteries that can be recharged at home or at a charging station. The biggest challenge to the commercialization of the EV is the battery. The battery problems on electric vehicles can be solved by using roadway-powered electric vehicles (RPEVs). RPEVs do not require heavy and large batteries because they directly get power while moving on a road. These vehicles can take power either in a wired or wireless way. Thus, various wireless power transfer systems (WPTSs) have been developed for RPEVs, and as consequence, new types of RPEV have been developed. WPTS for RPEVs should be able to deliver high power efficiently through a small air gap for avoiding collision between the road and the vehicle.
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Fundamentals Principles Of The Ipts

In general, IPTs consist on two subsystems as shown in Figure 1: one is in the roadway, it allows to transfer power to the vehicle and consist on a high-frequency inverter, a primary capacitor bank and a power supply rail (or transmitter). The other one in the on-board system to receive power from the roadway system and consist on a pick-up coil (or receiver), a secondary capacitor bank, a rectifier and a regulator for a battery pack (Choi & Jeong, 2015; Choi Rim, 2015).

Figure 1.

Configuration of an IPTS for RPEV

978-1-5225-5870-5.ch013.f01

The electric vehicle can take power from the transmitter in this way:

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