一种高频变负载高压直流纹波电源控制方法及系统
By employing hybrid sampling feedback control combining the effective value loop and the instantaneous value loop of the ripple voltage in the high-voltage DC ripple power supply system, the problems of low ripple control accuracy and poor load adaptability in electric vehicle testing are solved, and effective suppression of parasitic LC filtering is achieved, thereby improving the stability and accuracy of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG AINUO INTELLIGENT INSTR CO LTD
- Filing Date
- 2024-09-03
- Publication Date
- 2026-07-17
AI Technical Summary
Existing high-voltage DC ripple power supply systems have low ripple control accuracy and poor load adaptability in electric vehicle testing. In particular, they are difficult to maintain stability and accuracy when faced with parasitic LC filtering and changes in the equivalent inductance of cables.
A hybrid sampling feedback control method is adopted, which combines the effective value loop and the instantaneous value loop of the ripple voltage to control the amplitude of the ripple voltage at the end of the measured object and the frequency and phase of the output voltage of the ripple generator, respectively. The sinusoidal modulation wave sin_pi is used for adjustment to eliminate the influence of parasitic LC.
This improves the system's ripple control accuracy and load adaptability, reduces the impact of parasitic LC on the system, and ensures stability and accurate ripple output under different load conditions.
Smart Images
Figure CN119134865B_ABST