Method of and apparatus for generating an adjustable reactance

A technology of reactance and generator, applied in the direction of inductors, transformers, electrical components, etc., can solve the problems of component tolerance, manufacturing variation, etc.

Active Publication Date: 2017-02-22
MOMENTUM DYNAMICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, transformer primary and secondary resonant frequencies are affected by many factors, including manufacturing variation, component tolerances, primary-secondary separation distance, axial alignment, temperature, and other factors

Method used

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  • Method of and apparatus for generating an adjustable reactance
  • Method of and apparatus for generating an adjustable reactance
  • Method of and apparatus for generating an adjustable reactance

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Embodiment Construction

[0019] Exemplary embodiments of the invention will be described for use in charging electric vehicles, but those skilled in the art will recognize that the teachings provided herein may be used to power other electric power systems. In an exemplary embodiment, the primary winding may be located on or in a horizontal surface, and the secondary coil may be attached to the bottom of the vehicle. Those skilled in the art will recognize that such applications encounter problems in practice, including those described below.

[0020] Vibrations in pavements due to, for example, people entering the vehicle, passengers entering or exiting, applying or removing loads from the vehicle, vibrations in the pavement due to the movement of large vehicles, the impact of high winds on the vehicle, accumulation in Secondary and / or primary windings (z-axis translation) caused by snow and ice on the vehicle, accumulation of snow and ice on road surfaces, vehicle suspension degradation over time, a...

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Abstract

A method for adjusting reactance includes an adjustable reactance generator including a comparator receiving an input sinusoidal waveform and outputting a square wave that retains the frequency and phase of the applied sinusoidal waveform. The reactance adjustment is generated using a power switching circuit that receives the square wave from the comparator as a control signal and outputs a square wave that retains the frequency and phase of the applied sinusoidal voltage waveform, an adjustable power supply that adjusts the amplitude of the square wave output by the power switching circuit, and an amplitude detector that controls the output level of the adjustable power supply. The power switching circuit output, when converted to a sinusoid, provides the effect of an adjustable reactance.

Description

[0001] This application is a divisional application of a Chinese invention patent application. The title of the original application is "Method and device for generating adjustable impedance". The application number of the original application is 201380032535.0 (PCT application number is PCT / US2013 / 040581). The filing date is May 10, 2013. [0002] Cross References to Related Applications [0003] This application claims priority to US Provisional Patent Application No. 61 / 645,850, filed May 11, 2012. The content of this application is incorporated herein by reference. technical field [0004] This patent application relates to the transmission of electrical energy by means of resonant induction. More specifically, it describes a method and apparatus for generating the adjustable reactance required for efficient resonant inductive power transfer. Background technique [0005] Inductive power transfer has many important applications across many industries and markets. fig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J5/00H02J50/12
CPCH02J5/005H02J50/12Y02T90/14Y02T10/7072Y02B70/10Y02T10/70H01F38/14H02J50/10
Inventor 布鲁斯·理查德·朗安德鲁·S·达加丹尼尔·S·哈克曼
Owner MOMENTUM DYNAMICS CORP
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