The water MOSFET solution is designed for the harsh working conditions of unmanned 7 × 24 hours in the field/underground of hydropower stations, covering the full chain scenarios of micro off grid small hydropower, industrial and commercial distributed hydropower, and megawatt level grid connected hydropower stations. It balances high conversion efficiency, strong surge resistance, and ultra wide temperature range adaptation to meet the needs of hydropower generation systems of different power levels.

Core selection principles
Voltage margin ultimate redundancy:In response to the characteristics of turbine speed fluctuations, power grid surges, and lightning induction spikes, MOSFET withstand voltage reserves ≥ 50% safety margin. For megawatt level grid connected scenarios, 1200V and above withstand voltage devices are directly selected to avoid overvoltage breakdown under complex operating conditions.
‌Low loss priority:Prioritize devices with low on resistance Rds (on) and low gate charge Qg to significantly reduce conduction and switching losses in the power conversion process, increase the overall water to energy conversion efficiency to over 97%, and reduce the volume of the heat dissipation system.
‌Encapsulation adaptation for special environments:The main power devices are packaged with low thermal resistance and high insulation properties such as TO-247 and TO-220, and are compatible with water-cooled/forced air-cooled cooling systems; The auxiliary control circuit adopts compact packages such as DFN and SC70 to balance heat dissipation capability and PCB space utilization.
‌Industrial grade reliability enhancement:Meets a wide temperature range of -55 ℃ to 175 ℃, with high avalanche resistance and strong ESD resistance, suitable for underground/field conditions with high humidity, high dust, and strong vibration, ensuring a design life of over 20 years.