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Wireless power transmission and dynamic related system resonant frequency detection and compensation techniques

A technology of driving frequency and oscillating system, applied in output power conversion device, resonant circuit auxiliary power control, resonant circuit driving/regulating device, etc.

Pending Publication Date: 2020-08-14
田建龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially in the case of high frequency and high power, whether soft switching can be achieved will even be related to whether the system can work normally, because the high power consumption and high noise caused by hard switching may make the switch not work normally and cause failure of the whole system

Method used

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  • Wireless power transmission and dynamic related system resonant frequency detection and compensation techniques
  • Wireless power transmission and dynamic related system resonant frequency detection and compensation techniques
  • Wireless power transmission and dynamic related system resonant frequency detection and compensation techniques

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Embodiment Construction

[0022] This part includes the following three parts:

[0023] 1) Dynamic detection method of system resonance frequency

[0024] 2) Compensation technology for system resonant frequency

[0025] 3) Multi-primary high-power wireless power transmission system

[0026] 1. Dynamic detection method of system resonance frequency

[0027] 1.1 Introduction

[0028] This patent uses phase-locked loop technology to detect the zero-crossing signal 4 (voltage zero-crossing or current passing Zero point) is compared to detect the difference between the driving frequency and the resonant frequency of the system, so as to finally determine the resonant frequency of the system. It should be emphasized that what a phase detector compares is not the frequency of its two input signals, but the phase of its two input signals. This is because the detected frequency of the main oscillation of the system is practically always equal to the driving frequency of the system, and it is meaningless t...

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Abstract

A method for switch mode DC-AC converter driven oscillation system control, which can make the system always work on square wave driving, soft-switching and resonant conditions at the same time so that the system efficiency and power transfer ability can be greatly increased. The proposed method composes of four major techniques: (1) the technique to dynamically monitoring the innate system resonant frequency by detecting the phase difference between the system gate driving signal and the ZVC (Zero Voltage Crossing) or ZCC (Zero Current Crossing) signal of the main oscillation of the system;(2) the technique to realize a kind of Voltage Controlled Soft-switching Capacitor (VCSC); (3) the technique to avoid frequency bifurcation problem of variable frequency systems and (4) the technique toadjust the output pulse width of mono-stable flip flops (or multivabritors) dynamically with a DC voltage.

Description

[0001] This case is the parent case ( Application number: 201780018616.3, international filing date: 2017-04-06, priority date: 2016- 04-06, International publication number: WO2017 / 173998, International publication date: 2017-10-12, Invention name: Wireless power transmission and Dynamic Detection and Compensation Technology of Correlated System Resonant Frequency ) for a divisional application. In view of the non-standard writing of the claims in the earliest parent application, this divisional application changed the ten non-standard claims in the original parent application to five claims in this divisional application. technical field [0002] The invention mainly relates to the dynamic real-time detection and compensation technology of the inherent resonant frequency of an oscillation system driven by a switch mode DC-AC converter, such as a wireless power transmission system, a switching power supply, etc. Using these technologies, these systems can always work in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02M1/08G01R25/00
CPCG01R25/00H02M1/083H02J50/12Y02B70/10H02M7/48H03J1/06H03J1/18H02M7/4818
Inventor 田建龙
Owner 田建龙
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