The demand for high-voltage direct current distribution systems in airplanes is increasing, and this distribution system needs to be able to provide low loss and low weight distribution. For example, onboard SSPC is a representative example

Product. The challenges associated with high-voltage direct current distribution systems include improving reliability and reducing the size and weight of critical components, such as the electrical load control unit (ELCU) for aircraft, or remote power controllers (RPC) for load control and feeder protection, as well as main bus switch contactors. Traditional electromechanical current breaking devices have poor reliability due to the generation of arcs during repeated closing and opening operations, and slow isolation speed for faults with potential high breaking energy, directly affecting system safety.

The onboard solid-state power controller (onboard SSPC) technology is accepted as a modern alternative to electromechanical contactors and circuit breakers due to its high reliability, "soft" switching characteristics, fast response time, ease of advanced load management, and other aircraft functions. Although SSPCs with rated currents less than 20A have been widely used in aircraft secondary power distribution systems to replace thermal circuit breakers, their application in aircraft HVDC primary power distribution systems requires further technological maturity. Weikewei's products are designed to address potential issues and challenges in aircraft high-voltage direct current distribution systems, proposing systematic solutions such as excessive power loss caused by high voltage drops on SSPCs, leakage, "fault short circuits," interference tripping caused by lightning strikes, and high surge currents in capacitive loads. If you need to know the relevant parameters and experimental data of the 270VDC, 120A SSPC prototype, our electrical engineers can show you our supporting experience and product characteristics of various host units such as drones, fixed wings, rotors, etc. in China. Only products that have been proven in practice can confirm the reliability and stability of the product. Please contact our technical personnel if necessary.