Power conversion system play an important role in energy transfer, smoothing of new energy sources, frequency regulation, and shared energy storage on the grid side. The energy storage inverter is the core component of the energy storage system. Major wind and solar inverter manufacturers have seized the industry's opportunities to build a high ground for extended energy storage products, and the performance testing of energy storage inverters (PCS) has become a battleground for major manufacturers. Testing and verifying technical solutions using physical experimental platforms has drawbacks such as long construction cycles and high risk costs. However, the use of a semi-physical simulation model can just solve the problems existing in the early stage of physical platform construction.