Research status and development trend of PCS

Due to the shortage of conventional energy and serious environmental pollution, new energy (NE), such as wind energy, solar energy, biomass energy, etc. is getting more and more attention. However, the output power of NE is unstable. Energy storage is the most effective way to solve the problem of NE applications. The power conversion system (PCS) determines the output power quality and dynamic characteristics of the energy storage system. This paper reviews the development and application of PCS, conducts a detailed study of its working principle, topology, and key technologies. The main index system of PCS is established by consulting the relevant standards, and the requirements and detection methods of the main indexes are pointed out. This work provides a scientific basis for the selection of PCS. At the end of the paper, summarizes and prospects on PCS. (paper)