The invention provides a wide-range active-disturbance-rejection control method for a bidirectional wireless charging system. The wide-range active-disturbance-rejection control method is used for solving the technical problems that an existing BWPT system is poor in transmission stability and low in transmission efficiency under the wide-range working condition. The method comprises the following specific steps: setting a system reference power angle; acquiring real-time output current and voltage signals of the electric energy receiving end circuit during the nth sampling, and calculating a system power angle; whether the calculated system power angle is equal to the system reference power angle or not is judged, if yes, active-disturbance-rejection control is completed, and if not, the difference value between the system power angle and the system reference power angle is calculated and input into an LADRC controller; the LADRC controller estimates a state variable and total disturbance, compensates the state variable and the total disturbance, outputs a control signal, limits the amplitude of the control signal, acts on the PWM generator, and controls a switching tube of a full-bridge inverter of the electric energy receiving end circuit after passing through the driving circuit. According to the invention, constant current output of the system is realized. The control process does not need communication between the primary side and the secondary side, and has the advantages of fast dynamic response and strong anti-interference performance.
本申请提供一种双向无线充电系统的宽范围自抗扰控制方法,用于解决现有BWPT系统在宽范围工况下的传输稳定性差以及传输效率低的技术问题。具体步骤为:设定系统参考功角;采集第n次采样时电能接收端电路的实时输出电流和电压信号,计算系统功角;判定计算的系统功角与系统参考功角是否相等,若相等,则自抗扰控制完成,若不相等,则计算系统功角与系统参考功角的差值并输入LADRC控制器;LADRC控制器估计状态变量及总扰动并加以补偿输出控制信号,将控制信号限幅后作用于PWM发生器,经驱动电路后控制电能接收端电路全桥逆变器的开关管。本申请实现了系统的恒流输出。控制过程无需原副边之间通信,具有动态响应快,抗干扰性能强的优势。
Wide-range active-disturbance-rejection control method of bidirectional wireless charging system
一种双向无线充电系统的宽范围自抗扰控制方法
2025-02-25
Patent
Electronic Resource
Chinese
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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