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Wireless charging system load and mutual inductance parameter identification method and system

A technology of wireless charging and parameter identification, which is applied in the direction of electrical components, circuit devices, etc., and can solve the problems of wireless charging system load and mutual inductance parameter identification, etc.

Inactive Publication Date: 2019-08-09
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The technical solution of the present invention provides a wireless charging system load and mutual inductance parameter identification method and system to solve the problem of how to identify the wireless charging system load and mutual inductance parameters

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  • Wireless charging system load and mutual inductance parameter identification method and system
  • Wireless charging system load and mutual inductance parameter identification method and system
  • Wireless charging system load and mutual inductance parameter identification method and system

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Embodiment Construction

[0053] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0054] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a wireless charging system load and mutual inductance parameter identification method. The method comprises the steps of: detecting the current value Is, flowing through a coil, of a receiving device when a wireless charging system works; sending the current value Is to a data processing module in a primary controller through a wireless communication module; detecting voltage values U1 at two ends of a compensation inductor L1 in an emission device, and sending the voltage values U1 to the data processing module in the primary controller; calculating a mutual inductancevalue M according to the current value Is and the voltage values U1 received by the data processing module; and calculating a load value Rac according to the voltage Ui, the current value Is and themutual inductance value M of an output power supply of an inverter.

Description

technical field [0001] The present invention relates to the technical field of wireless charging, and more particularly, to a method and system for identifying load and mutual inductance parameters of a wireless charging system. Background technique [0002] Due to the advantages of flexible power supply, safety, high stability and strong environmental affinity, wireless charging technology has been widely used in various charging devices and has become a research hotspot worldwide. Efficiency is the focus of attention during charging. Existing efficiency optimization algorithms are mainly aimed at impedance matching under load changes, and output control is considered on this basis. However, since the wireless charging system is a loosely coupled system, when the relative position of the primary and secondary sides changes, the coupling coefficient will change greatly. The change of the coupling coefficient directly affects the maximum efficiency operating point, resultin...

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Application Information

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IPC IPC(8): H02J50/80H02J50/70H02J50/12
CPCH02J50/80H02J50/70H02J50/12
Inventor 王松岑杨俊峰何浩徐翀魏斌吴晓康
Owner CHINA ELECTRIC POWER RES INST
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