| At present, the mode of electric energy transmission is mainly conductive. But for some special electrical equipment, the traditional way of power supply is not enough to meet the needs of the production and life. The wireless energy transmission is easy to carry, portable power supply, utilization equipment and can be no electrical connection directly with the mobile device power supply. The wireless energy transmission is free from dirt, dust, water, chemicals and can work in the bad environment, such as carbon deposit and harmful radiation. It is operational security, and the electrical contact do not contact with exposed wire. So, the wireless energy transmission has become a new researchful hotspot in the field of electronics.Resonant compensation network is a vital part of the wireless power transmission system. In this paper, the resonant compensation network of wireless energy transmission system was studied systematically. Resonant compensation network was divided into of the circuit and electromagnetic, and two parts were studied.In this paper, the characteristics and performance of the resonant circuit was studied and compared, MOSFET was also compared with IGBT. On the basis of their characteristics, the LLC resonant circuit was given to apply in the wireless transmission system. Through the analysis of LLC resonant network, the equivalent circuit and mathematical model was established and simulated under the environment of MATLAB. The steady working area of the circuit was determined, the element parameters of resonant network was calculated. Experimental results showed that the scheme of resonance compensation presented in this paper can effectively realize resonant compensation function.In order to meet the demand for wireless energy transmission in special environment and break through the bondage of the existing magnetic coupling coil structure, the three kinds of the new type of magnetic coupling coil structure were designed, the three kinds of the new type of magnetic coupling coil structure is suitable for the occasion of special application requirements. At the same time, including the three new type magnetic coupling coil, the six kinds of magnetic coupling coil has carried on the modeling, and the model parameter and material properties of coil are given.In the finite element analysis software ANSYS environment, the coupling coefficient is technical indicator, the six kinds of magnetic coupling coil were simulated. The coil that has higher coupling coefficient was simulated with hollow coil and joining core iron. The conclusion that the magnetic coupling coil structure relate with the coupling coefficient is drawn. Experimental results showed that the three kinds of the new type magnetic coupling coil structure which were designed in this paper have the ideal magnetic coupling performance. |
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