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Current type wireless power supply system load self-adapting control method

An adaptive control and wireless power supply technology, applied in electromagnetic wave systems, circuit devices, electrical components, etc., can solve the problems of low overall system efficiency and primary side influence, and achieve simple circuit design, low design cost, and small detection error. Effect

Active Publication Date: 2013-03-13
重庆前卫无线电能传输研究院有限公司
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Problems solved by technology

[0012] Its disadvantages are: using the secondary side short-circuit decoupling method, due to the additional DC / DC converter, the overall efficiency of the system is low. In addition, this method is a passive control method for light loads. When the load changes dynamically, the primary side still be affected

Method used

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  • Current type wireless power supply system load self-adapting control method
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  • Current type wireless power supply system load self-adapting control method

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Embodiment Construction

[0036] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] A load adaptive control method for a current-type wireless power supply system, the key of which is to perform the following steps:

[0038] Step 1: Measure the DC power supply current value I in the current-type wireless power supply system dc ;

[0039] Step 2: According to the DC power supply current value I dc Calculate the load circuit load value R L ;

[0040] Step 3: According to the load circuit load value R L Calculating the minimum angular frequency value ω that satisfies the preset transmission efficiency η;

[0041] Step 4: Adjust the variable elements in the primary-side tunable resonant network so that the resonant angular frequency ω of the primary-side tunable resonant network 0 =ω.

[0042] Example image 3 As shown, the current-type wireless power supply system in step ...

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Abstract

The invention discloses a current type wireless power supply system load self-adapting control method. The method comprises steps of measuring the current value Idc of a direct current power supply of a current type wireless power supply system; calculating the load value RL of a load circuit in accordance with the current value Idc of the direct current power supply; calculating a minimum angle frequency value omega meeting the preset transmission efficiency eta in accordance with the load value RL of the load circuit; and adjusting a variable component of a primary side resonant network, and enabling the resonance angular frequency omega 0 of the primary side resonant network to be equal to omega. The method the advantages that a wireless communication module is not used, the design cost is low, only a parameter is measured, the detection error is little, the accuracy is high, the circuit design is simple, the implementation is easy, the system determines the variation condition of the load circuit in accordance with the real-time detected current value of the direct current power supply, the parameter of the primary side resonant network is changed in accordance with the change of the load circuit, the working efficiency of the system is improved and the system has high working efficiency when the load is changed dynamically.

Description

technical field [0001] The invention relates to wireless energy transmission technology, in particular to a load self-adaptive control method for a current-type wireless power supply system. Background technique [0002] With the development of social economy and the advancement of science and technology, people have higher and higher requirements for concepts such as portability, safety, efficiency, and environmental protection. The so-called Wireless Power Transmi ss ion Technique refers to the comprehensive utilization of modern power electronic energy conversion technology, circuit theory, microelectronics technology and modern control technology to realize electric energy from power supply (grid or battery) through soft medium (such as electric field , magnetic field, microwave, laser, etc.) are transmitted to the electrical equipment in a non-electrical contact mode, or the electrical equipment returns energy to the power supply through a soft medium. It is to use som...

Claims

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Application Information

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IPC IPC(8): H02J17/00H02J50/12
Inventor 王智慧孙跃苏玉刚唐春森戴欣
Owner 重庆前卫无线电能传输研究院有限公司
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