The invention discloses an efficiency optimization control method for a wireless power transmission system. The efficiency optimization control method comprises the following steps: step 1, a control system is accessed to the wireless power transmission system based on a bilateral LCC compensation network; 2, according to the detected voltage and current values of the secondary side direct current side and a duty ratio value beta s obtained by sampling an input voltage vcd duty ratio detection circuit, a phase update value in a main control PWM module is obtained, and phase locking and output voltage and current control are achieved; the input current irs is ahead of the input voltage vcd through a phase-locked link, so that the input impedance of the rectifier is capacitive, and zero-voltage switching-on of the secondary side rectifier is realized; and the duty ratio beta s of the input voltage vcd is controlled through the voltage loop controlled rectifier, so that the output voltage V2 and the current I2 are controlled; and step 3, the working mode of an inverter is adjusted according to the adjustable range of the input voltage of the inverter. According to the invention, the output voltage and current control of the system is simplified without depending on communication and control.

    本发明公开一种用于无线电能传输系统的效率优化控制方法,包括步骤1,将控制系统接入所述基于双边LCC补偿网络的无线电能传输系统;步骤2,根据检测副边直流侧的电压电流值、对输入电压vcd占空比检测电路采样得到的占空比值βs,得出主控制PWM模块中的相位更新值,实现相位锁定与输出电压电流的控制;通过锁相环节实现输入电流irs超前输入电压vcd,使得整流器输入阻抗呈现容性,实现副边整流器零电压开通;通过电压环节控整流器制输入电压vcd占空比βs实现对输出电压V2、电流I2的控制;步骤3,原根据逆变器输入电压可调范围调节逆变器工作模式。本发明能够实现系统的输出电压电流控制不依赖通信与控制的简化。


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    Title :

    Efficiency optimization control method for wireless power transmission system


    Additional title:

    一种用于无线电能传输系统的效率优化控制方法


    Contributors:
    GAO QINGQING (author) / WU MIN (author) / ZHANG JIAWEI (author) / XU FAN (author) / ZHANG ZELEI (author)

    Publication date :

    2022-02-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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