The HY-PSM Series is a high-power programmable medium-frequency standard power source developed by Hangyu Power Shanghai adopting SPWM switching inverter topology, mainly designed for ground power supply and testing of 400Hz aerospace onboard equipment, also applicable to military industry, special motors, radar electronics and NMR equipment R&D verification. It offers single-phase and three-phase output variants with unit power ranging from 1kVA to 900kVA, meeting high-capacity mass power demand for hangar & jet bridge ground support