Wide-load-range efficient WPT system based on hybrid load matching and optimization method thereof

A mixed-load and wide-load technology, applied to electrical components, circuit devices, etc., can solve problems such as WPT system difficulties, and achieve the effects of small size, improved efficiency, and reduced complexity

Active Publication Date: 2021-11-09
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that the WPT system in the prior art is difficult to keep working in the high-efficiency area, a wide-load-range high-efficiency WPT system based on mixed load matching and its optimization method are provided

Method used

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  • Wide-load-range efficient WPT system based on hybrid load matching and optimization method thereof
  • Wide-load-range efficient WPT system based on hybrid load matching and optimization method thereof
  • Wide-load-range efficient WPT system based on hybrid load matching and optimization method thereof

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Embodiment Construction

[0078] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0079] The wide load range efficient WPT system optimization method based on mixed load matching of the present invention comprises the following steps:

[0080] will switch the relay S 1 , S 2 , S 3 The on and off of the combination are set to four system modes:

[0081] When S 1 , S 3 Disconnect, S 2 When closed, the WPT system is the original full-bridge rectification S-S system S-S-F mode, and the system’s optimal equivalent AC load R Seqopt Expressed as:

[0082]

[0083] When S 1 Disconnect, S 2 , S 3 When it is turned on, the rectifier changes from the full-bridge state to the half-bridge state. At this...

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Abstract

The invention discloses a wide-load-range efficient WPT system based on hybrid load matching and an optimization method thereof, belongs to the technical field of radio transmission, and aims to solve the problem that the WPT system in the prior art is difficult to always work in an efficient area. The wide-load-range efficient WPT system comprises a transmitting end circuit and a receiving end circuit, wherein the transmitting end circuit comprises a direct-current input voltage UDC, a bridge type inverter circuit and a transmitting coil circuit, the receiving end circuit comprises a receiving coil circuit, the receiving coil circuit comprises a receiving coil, the mutual inductance between the transmitting coil and the receiving coil is M, the two ends of the receiving coil circuit are connected with a load impedance adjusting capacitor CST through a switch relay S1, the receiving coil circuit is also connected with an LCC topology compensation coil, two ends of the LCC topology compensation coil are connected with an SS topology compensation capacitor CT through a switch relay S2, the LCC topology compensation coil is also connected with a bridge rectifier circuit, and the bridge rectifier circuit is connected with a switch relay S3. The wide-load-range efficient WPT system is used for enabling the WPT system to keep high efficiency in a wide load range.

Description

technical field [0001] The invention belongs to the technical field of radio transmission, and in particular relates to a wide load range high-efficiency WPT system based on mixed load matching and an optimization method thereof. Background technique [0002] Wireless power transfer (WPT) technology has been applied in many industrial applications, such as LEDs, automatic guided vehicles, electric vehicles, railways, etc., because it enables wireless power transfer between a power source and a load without any direct electrical connections. For WPT systems, system efficiency is one of the key performances that need to be carefully considered, as it significantly affects economic benefits. In general, the optimal transmission efficiency of the WPT system only appears at a certain load value, that is, when the load deviates from the optimal value, the transmission efficiency will seriously decrease. Unfortunately, the typical load for most WPT applications is a battery, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12
CPCH02J50/12Y02T10/70
Inventor 李勇杨环宇邵源罗海军何正友麦瑞坤
Owner SOUTHWEST JIAOTONG UNIV
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