The invention relates to the technical field of DC-DC converter control, in particular to a composite control method for a bidirectional DC/DC converter of an automobile charging pile. The method comprises the following steps: firstly, establishing a reduced order transfer function of the bidirectional DC/DC converter of the automobile charging pile according to a frequency sweep method, and converting the reduced order transfer function into a second order system to obtain a control model; secondly, according to the control model, an error function is established, a sliding mode surface is obtained, and a sliding mode controller is designed; meanwhile, designing an extended state observer according to the control model to obtain a disturbance estimation value; combining the sliding mode controller and the disturbance estimation value to construct a sliding mode anti-disturbance controller; then, according to the error function, establishing a neural network PID controller; and finally, according to the sliding mode anti-interference controller and the PID controller, establishing a composite controller. The composite controller can enhance the control performance of the system under complex working conditions, and the stability and safety of charging and discharging of the electric vehicle are ensured.
本发明涉及DC‑DC变换器控制技术领域,具体为一种汽车充电桩双向DC/DC变换器的复合控制方法。所述方法包括以下步骤:首先,根据扫频法,建立汽车充电桩双向DC/DC变换器的降阶传递函数,将降阶传递函数转换为二阶系统,得到控制模型;其次,根据控制模型,建立误差函数,得到滑模面,设计滑模控制器;同时,根据控制模型设计扩展状态观测器,得到扰动估计值;结合滑模控制器和扰动估计值,构建滑模抗扰控制器;然后,根据误差函数,建立神经网络PID控制器;最后,根据滑模抗扰控制器和PID控制器,建立复合控制器;复合控制器可以增强系统在复杂工况下的控制性能,确保电动汽车充电和放电的稳定性与安全性。
Composite control method for bidirectional DC/DC converter of automobile charging pile
一种汽车充电桩双向DC/DC变换器的复合控制方法
2025-04-25
Patent
Electronic Resource
Chinese
IPC: | 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 / 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 |
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