Integrated Inverter Power Module With Winding Changeover Switching

The patent implements dynamic switching between two inverter configurations (first inverter with standard switches and second inverter with changeover switches) based on the motor operating conditions. The controller selects the appropriate inverter configuration according to the required torque level, enabling the system to adapt its voltage usage ratio dynamically. This resolves the contradiction by allowing high torque output when needed while maintaining high fuel efficiency in low-torque operating conditions through the changeover switch mechanism that optimizes voltage utilization.

The patent creates a universal motor driving system that can perform multiple functions through a single integrated design. The dual inverter configuration with changeover switches enables the system to provide both high fuel efficiency (through optimized voltage usage ratio in normal mode) and high maximum torque (through alternative connection paths in changeover mode). This multi-functional design resolves the contradiction by making the system capable of delivering both efficiency and power performance depending on operating conditions.

The patent merges the functionality of two separate inverters into a single integrated power module. The first inverter and second inverter are combined in one physical module, sharing common components such as the DC power connection and motor connection. The changeover switches are integrated within the same module structure, allowing mode switching without requiring separate physical inverters. This merging approach resolves the contradiction by providing dual-mode operation capability while minimizing the increase in area and cost compared to completely separate systems.