A Method for Determining Topology of Constant Current Compensation Network in Wireless Power Transmission System

Abstract

The invention discloses a method for determining the topology of a constant current compensation network of a wireless power transmission system, which belongs to the technical field of wireless power transmission. The method for determining the topology of the constant current compensation network according to the present invention includes: firstly determining the network parameters of the system according to the fact that the current gain of the system has nothing to do with the load, the system input impedance is purely resistive, and the system efficiency is maximized, and then determine the constant current compensation network Topology, the constant current compensation network topology in which 4 groups of primary and secondary resonant networks can be equivalent to T-type or Π-type networks is given. The output current of the IPT system is not limited to the parameters of the non-contact transformer, which simplifies the design of the non-contact transformer; it can simultaneously realize the load-independent constant current output and unit power factor, reduce reactive power, and reduce device stress requirements , improve transmission efficiency.

Description

technical field [0001] The invention discloses a method for determining the topology of a constant current compensation network of a wireless energy transmission system, which is suitable for wireless charging occasions and belongs to the technical field of wireless energy transmission. Background technique [0002] In recent years, inductive wireless power transfer (Inductive Power Transfer) has increasingly become a research hotspot and has been applied in many occasions. Current sources are required in many commercial, industrial and research fields such as capacitor charging, battery charging, and driving light-emitting semiconductors. The IPT system requires a constant current required by the output load. [0003] The IPT system uses an alternating electromagnetic field as a medium to transmit energy to the load. Its leakage inductance is large, and a resonant compensation network is usually required. However, the output characteristics of the compensated network are v...

AI Technical Summary

Problems solved by technology

However, the constant current of the above structure is affected by the parameters of the non-contact transformer, and the parameters of the non-contact transformer are limited by space and distance, and the design is complicated. Under the limited space and distance, the transformer parameters may not meet the design requirements.

Images