Journal of Electrical Engineering and Automation

With the rapid development of aerospace, new energy vehicles, military weapons and other application fields, the number and complexity of electronic equipment has increased greatly. Meanwhile, in order to increase the load compatibility and carrying capacity of distribution system, the traditional mechanical relay and conventional circuit breaker have been unable to meet the high reliable distribution requirements of power supply and distribution system. Intelligent solid-state power controller with relay on/off function and circuit breaker protection function came into being. In this paper, the switching characteristics and protection characteristics of DC solid-state relay and solid-state power controller are compared and analyzed. Finally, the basic functions of DC solid-state power controller are verified through experiments.

DC Solid-State Power Controller; Solid State Relay; Switching Characteristics; Protective Properties