The key technical challenges in inverter design include the following aspects

1. Complex circuit structure: The inverter is required to convert DC power AC power, and its circuit structure is complex, making the design difficult.
2. Efficiency and stability: The inverter needs to operate efficiently while ensuring the stability of the, which poses high technical requirements.
3. Heat dissipation issues: The inverter generates heat during operation, and how to effectively dissipate heat to ensure its operational stability is of the technical challenges.
4. Electromagnetic compatibility issues: Electromagnetic compatibility issues in the inverter can affect the normal operation of the equipment and are one of the technical challenges.

Limitations of IGBT technology: Although IGBT (Insulated Gate Bipolar Transistor) is a widely used power electronic device in inverters at present, to its advantages such as high reliability, simple driving method, ease of protection, no need for buffer circuit, and high switching frequency. However, IGBT also has its weaknesses including limited load cycle times, which can lead to issues such as cathode lead weld point open circuit and low weld point fatigue strength, as well as potential defects in insulation.