Dynamic anti-offset wireless electric energy transmission system for electric vehicle and control method
A wireless power transmission, electric vehicle technology, applied in electric vehicle charging technology, electric vehicle, power management and other directions, can solve the problems of increasing the complexity of the system circuit and control requirements, to improve the anti-offset performance, improve the transmission efficiency, Enhance the effect of mutual inductance
Pending Publication Date: 2022-03-22
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology
For example, adding a DC / DC converter at the transmitting end or receiving end to adjust the input or output voltage, or controlling the inverter to control the output of high-frequency alternating current, but it increases the complexity and control requirements of the system circuit
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[0031] In order to illustrate the purpose and advantages of the present invention more clearly, the technical solutions of the present invention will be specifically described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0032] Such as figure 1 Shown is the system circuit structure designed by the present invention, a dynamic anti-offset wireless power transmission system for electric vehicles, including a primary transmitting part and a vehicle-mounted secondary receiving part laid under the vehicle driving road;
[0033] The primary transmitting part consists of DC power supply E, high frequency inverter H, LC filter B, primary resonance compensation network CN1, primary transmitting coil L 1 constitute;
[0034] The primary resonant compensation network CN1 consists of a compensation inductor L f , compensation...
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The invention relates to an electric vehicle dynamic anti-offset wireless power transmission system and a control method, and belongs to the technical field of wireless power transmission. The invention provides a dynamic anti-offset wireless electric energy transmission system for an electric vehicle, aiming at solving the problems of relatively large output power fluctuation and unstable power caused by an offset problem between coupling coils in a wireless electric energy transmission process. A high-frequency inverter is connected with a direct-current power source, an LC series resonance type filter is connected with the high-frequency inverter, the output end of the inverter is in coupling connection with a secondary coil through a compensation network and a primary coil, the secondary coil is connected with a rectifying and filtering unit through the compensation network, and the output end of a DC / DC converter is connected with a load. The detection unit collects voltage and current signals through a Hall sensor, the collected signals are calculated through the DSP control unit to obtain needed PWM signals, and the drive circuit controls on and off of a switching device in the DC / DC converter according to the obtained PWM signals. The method is suitable for occasions with large offset degree and is easy to control.
Description
technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to a dynamic anti-offset wireless power transmission system and control method for electric vehicles, which are suitable for applications in dynamic wireless power transmission of electric vehicles. Background technique [0002] Wireless Power Transmission (WPT) technology uses a non-contact loosely coupled transformer to realize wireless transmission of electric energy by using a high-frequency alternating magnetic field. Compared with the traditional contact power supply method, it has the advantages of convenient operation, no spark and electric shock hazard, simple maintenance, flexibility and stability, etc., and has good adaptability, so the application prospect is very broad. [0003] In recent years, with the rapid development of wireless power transmission technology, more and more wireless charging products have come out one after another, such as mobil...
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Patent Timeline
Login to View More IPC IPC(8): H02J50/12H02M3/335H02M3/156H02M1/32H02M1/34B60L53/12
CPCH02J50/12H02J50/005H02M3/33569H02M3/156H02M1/32H02M1/34B60L53/12Y02T10/70Y02T10/72Y02T10/7072Y02T90/14Y02T90/16
Inventor 刘岩叶星王鹏飞姜咏梅余超刘鹏宇
Owner SHENYANG POLYTECHNIC UNIV