A method for adjusting the power and efficiency of a one-to-many electric vehicle road power supply system

Abstract

The invention discloses a power and efficiency regulating method for a one-to-many electric automobile road surface power supply system. A large-size transmitting coil is used for supplying power to a plurality of small-size receiving coils at the same time. A power control method comprises the steps that the change of the number of charged automobiles is judged by detecting the change of source end currents, then the output voltage of a power source is regulated, and the effect that the receiving power of each electric automobile is kept unchanged all the time is guaranteed. An efficiency optimization method comprises the step that the load characteristic is regulated through an impedance matching network on the receiving side, so that the maximum efficiency can be obtained when power is supplied to the electric automobiles of different numbers.

Description

technical field [0001] The invention belongs to the application field of wireless energy transmission technology, and in particular relates to a specific control and optimization method of an electric vehicle road power supply system. Background technique [0002] Pure electric vehicles with battery packs as the power source have the advantages of low noise and zero emissions, and are a green vehicle with broad development prospects, but the problem of difficult charging is still a major stumbling block hindering its development. Compared with the traditional wired charging method, the wireless charging method does not require frequent operations, can avoid leakage accidents caused by mechanical friction of plugs and sockets, and does not need to occupy a large amount of land resources. On the other hand, due to the limitations of power battery technology, electric vehicles still have the following problems: short cruising range, long charging time, frequent charging, and he...

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