基于同步旋转坐标系的变频驱动器-异步电动机的获取输入阻抗方法及设备
By establishing a rotor flux-oriented vector control asynchronous motor model and a small-signal modeling method, the problem of solving the input impedance of the variable frequency drive-asynchronous motor was solved, improving the stability analysis of the ship's DC microgrid and realizing the accurate acquisition of the input impedance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TAN KAH KEE INNOVATION LAB
- Filing Date
- 2023-03-21
- Publication Date
- 2026-07-17
AI Technical Summary
How to accurately solve the input impedance of the variable frequency drive-asynchronous motor to solve the problem of high-frequency oscillation of the input and output voltage of the converter in the DC integrated electric propulsion system of ships, especially considering the complexity and low cost of asynchronous motors, the existing technology is difficult to effectively solve its input impedance.
By establishing a rotor flux-oriented vector control asynchronous motor model, and combining it with the small-signal modeling method, a synchronous rotating coordinate system is used to establish formulas for power balance, Kirchhoff voltage, and vector control relationship between the frequency converter and the asynchronous motor, and finally the input impedance equation is obtained.
It enables accurate acquisition of the input impedance of the variable frequency drive-asynchronous motor system, improves the stability analysis capability of the ship's DC microgrid, and enhances the system's stability.
Smart Images
Figure CN117118280B_ABST