tailieunhanh - Development of an inductively coupled power transfer system (ICPT) for electric vehicles with a large airgap

Limited construction prospects are envisaged for all Precincts, except for the Southern end of the city. This Precinct off ers 75% of the current new supply and also the highest number of proposed apartments identifi ed. Why is an oversupply of the Southern Precinct not anticipated? Firstly, fi nanciers will not provide construction funding unless signifi cant presale levels are met. Secondly, 64% of the current supply levels have already been absorbed which suggests strong underlying demand for new product within close proximity to the CBD and other amenities. Lastly, the amenities and facilities of Central Park will further assist in rejuvenating the area and ensuring the. | Development of an inductively coupled power transfer system ICPT for electric vehicles with a large airgap A. Llombart Electric Engineering Department University of Zaragoza C María de Luna 3 50018 Zaragoza Spain. CIRCE Foundation. University of Zaragoza. C María de Luna 3 50018 Zaragoza Spain jvilla@ llombart@unizar jfsanz@ jsallan@ Abstract. An Inductively Coupled Power Transfer system ICPT of 5 kW that allows an air gap of 20 cm has been studied and developed. The mechanical scheme is shown in Fig. 1. The study has been focused in analyzing the influence of the frequency deviation with respect to the resonant frequency. This study has been carried out as a part in the development of a supply system for electric vehicles both with still and moving secondary. This paper shows the analysis process followed the practice process carried out to build the prototype and the conclusions of the work. Keywords Inductively coupled Power transfer ICPT energy conversion Contact-less energy transfer electromagnetic coupling electric vehicles 1. Introduction In many applications inductively coupled power transfer ICPT systems have several advantages over conventional energy transmission using wires and connectors. For example ICPT has been the preferred system in hazardous applications due to the elimination of the sparkling and the risk of electrical shocks 1 . The development of such systems is improving and the numbers of applications where they are suitable grow step by step contact-less power supply for professional tools 2 contact-less battery charging across large air gaps for electric vehicles 3 compact electronic devices 4 mobile phones 5 public transport systems 6 . Generally an ICPT is implemented by using magnetic induction . by employing specially constructed transformers. In such transformers the energy from the primary to the secondary is transferred inductively through the air. It is quite common that .