基于双矢量MPCC的无电解电容电机驱动系统谐振抑制方法
By employing a dual-vector MPCC control method and a damped current injection strategy, the resonance problem in the electrolytic capacitor-free motor drive system was solved, achieving improved adaptive resonance suppression and current control performance, thereby enhancing system stability and power factor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG UNIV
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
In electrolytic capacitor-free motor drive systems, the resonance phenomenon between the grid-side inductance and the bus capacitor is significant, leading to increased total harmonic distortion of the grid-side current and system instability. Existing resonance suppression methods have errors and require manual adjustment.
A dual-vector MPCC-based control method is adopted. The q-axis current reference value is calculated through high power factor control, virtual damping current is injected and resonance is suppressed by damping resistor. Combined with current prediction model and target voltage vector selection, a three-phase PWM signal is generated to control the inverter.
It achieves adaptive resonance suppression without manual parameter adjustment, improves system stability and power factor, reduces grid-side current harmonics, and enhances the dynamic and static performance of the motor drive system.
Smart Images
Figure CN120729101B_ABST