A mobile segmental power supply inductive power transfer system

Abstract

The invention discloses a moving type segmented power supply induction electric energy transmission assembly. Multiple ground power source base stations are arranged near a rail along a power supply line, and multiple ground coils are arranged along the rail. The output ends of multiple ground power source modules in the same ground power source base station are connected to different alternatingcurrent buses, and power is supplied to the multiple adjacent ground coils at the same time through the alternating current buses, a diverter switch and a compensation module. A high-frequency magnetic field is generated by the ground coils, and a receiving module receives electric energy generated by the ground coils through electromagnetic induction. The whole power supply line is divided into multiple power supply sections. The power supply sections at the two ends of the power supply line are single-end power supply sections, and single-end power supply sections and double-end power supplysections are arranged between the single-end power supply sections at the two ends at intervals. Power is supplied to the ground coils in the single-end power supply sections through the ground powersource base stations in the single-end power supply sections. The ground power source base stations are not arranged in the double-end power supply sections, and power is supplied to the ground coilin each two-end power supply section at the same time through the two ground power source modules in the adjacent two single-end power supply sections.

Description

technical field [0001] The invention relates to an inductive power transfer system. Background technique [0002] Inductive power transfer (IPT) technology has gradually entered the field of industry and life, and its application in electric vehicle charging and rail transit vehicle power supply is the future development trend. Existing rail transit vehicles mostly use pantograph or third rail for power supply. When the rail transit vehicle is running, the friction of the pantograph or the third rail is likely to produce carbon deposits, resulting in poor contact, and the vehicle is disconnected from the grid, which reduces the reliability of the power supply system and affects the service life of the vehicle power supply system equipment. Bows or third rails require high maintenance costs. The inductive power transmission using the principle of electromagnetic induction realizes the non-contact transmission of power, solves the problems of sparks, friction, carbon deposit...

AI Technical Summary

Problems solved by technology

First, the cross-sectional area of ​​the AC busbar is relatively large

The existing short ground coil power supply scheme uses an AC busbar. When the power supply of the ground power supply is high, the current on the AC busbar is relatively large, resulting in a large resistance loss of the AC busbar cable and reducing the system efficiency.

Increasing the cross-sectional area of ​​the AC bus cable can reduce the resistivity of the AC bus cable and thereby reduce the resistance loss on the AC bus cable, but an overly thick cable cross-sectional area will increase the difficulty of cable manufacturing

Second, the voltage and current impact caused by the input of the compensation module

The power supply scheme using distributed ground power supply can reduce the number of ground power supply modules, but the installation location of ground power supply modules is limited by road conditions and existing urban infrastructure around the road

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