Integrated guide rail distribution switching power supply topology based on series compensation

Abstract

The invention provides an integrated guide rail distribution switching power supply topology based on series compensation. The power supply topology comprises a transmitting power supply and n transmitting guide rail power supply sections; each section of the n transmitting guide rail power supply sections comprises n transmitting guide rail units connected in series and a group of switching tubes Spn+ and Spn- which are connected in series reversely; each transmitting guide rail unit is formed by connecting a transmitting coil Lpnm and a compensation capacitor Cpnm integrated in the transmitting coil Lpnm in series; a group of switch tubes Spn+ and Spn- which are reversely connected in series are connected in parallel to the corresponding power supply sections of the transmitting guide rails; the multiplexing emission guide rail power supply section compensates for the adjacent power supply sections, and there is no need to configure a compensation inductor for each power supply section; and the multiplexing resonant capacitor compensates for the two power supply sections, and the number of capacitors is reduced. Due to high multiplexing of the system, the number of resonators is reduced, the size and cost of the system are reduced, loss is reduced, and the efficiency of the system is improved.

Description

technical field [0001] The invention belongs to the field of wireless power transmission and dynamic wireless power supply, and in particular relates to a distributed switching power supply topology of integrated guide rails based on series compensation. Background technique [0002] Dynamic wireless power supply technology can supplement electric energy in real time during the driving of electric vehicles, so it can increase the cruising range, reduce the ratio of power batteries, and overcome the disadvantages of traditional wired charging methods, which has important research value. At present, it is constantly developing in the direction of high power, long distance and long mileage. The research on dynamic wireless power supply technology at home and abroad is mainly carried out around the long guide rail type and multi-coil arrangement type magnetic coupling mechanism. In terms of its own structure and characteristics, magnetic core configuration, coupling performance ...

AI Technical Summary

Problems solved by technology

This method has a simple structure and low cost, but requires more power supply lines and longer lengths, and the switch is in a hard switching state, which is easy to burn the device, and it is difficult to open two sections of guide rails at the same time

②The multi-source independent power supply scheme refers to the provision of a transmitting power supply for each section of the power supply rail. This method eliminates the switch, simple structure, and easy switching, but the number of power supplies is too large and the cost is high

③The multi-source hybrid power supply scheme is an improvement on the single-source segmented power supply, which reduces the number of segments driven by each power supply rail to reduce the pressure on a single power supply, but the problem of hard switching and simultaneous power supply of two-segment rails has not yet been solved locally

④The multi-source hybrid alternate power supply scheme adopts two power supplies alternately connected to the launch rails, while reducing the number of power supplies, it allows two adjacent sections of the rails to work at the same time, which reduces costs and improves the stability of the received power, but there is still a problem with the power supply line. Long, limited rail length for single-supply drive and disadvantages of hard switching

[0005] In summary, for the power supply guide rail at the transmitting end of the dynamic wireless power supply system, the segmented arrangement and switching method of low cost, high efficiency, online soft switching, and multi-load compatibility need to be further studied.

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