A Segmented Transmitting Coil Switching Method for Electric Vehicle Dynamic Wireless Power Supply System

Abstract

The invention discloses a segmented transmitter coil switching method for a dynamic wireless power supply system of an electrical vehicle. Multiple influence factors are mainly comprehensively considered; and a distributed segmented transmitter coil switching strategy for the segmented transmitting dynamic wireless power supply system of the electrical vehicle is optimized. The system mainly comprises a high-frequency power supply, a segmented transmitter coil, a compensation capacitor, a receiving coil and a load. On the basis of considering three elements, namely minimum load power demands, power fluctuation demands and a program-controlled switch command transmitting frequency, a variable-width window search-based segmented transmitter coil switching scheme optimization strategy is provided to search an optimal selection scheme for the number of electrified segmented transmitter coils and corresponding switching points; the minimum load power demands and receiving power fluctuation limitation can be met; switching of the transmitter coils is controlled at the minimum switching frequency; and an effective thought is provided for an optimal design of the segmented transmitting dynamic wireless power supply system of the electrical vehicle.

Description

technical field [0001] The invention relates to the field of wireless energy transmission, in particular to a method for switching segmented transmitting coils of a dynamic wireless power supply system of an electric vehicle. Background technique [0002] With the continuous depletion of fossil energy and people's increasing concern for environmental issues, electric vehicles have developed rapidly, and vehicles are gradually getting rid of their dependence on fossil energy, developing from traditional vehicles to hybrid vehicles, and finally transitioning to pure electric vehicles. However, the energy density of on-board batteries is still difficult to compare with that of gasoline. Although with the continuous advancement of electric energy storage technology, lithium-ion batteries have gradually replaced lead-acid batteries, and some problems have been improved. Electric vehicles still need large and heavy battery packs as power. Energy storage equipment, and the wired ch...

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Problems solved by technology

However, the energy density of on-board batteries is still difficult to compare with that of gasoline. Although with the continuous advancement of electric energy storage technology, lithium-ion batteries have gradually replaced lead-acid batteries, and some problems have been improved. Electric vehicles still need large and heavy battery packs as power. Energy storage equipment, and the wired charging method is not convenient enough to meet the needs of frequent charging of electric vehicles

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