The Development Of Dc Solid State Power Controller Based On IGBT

SSPC(Solid-State Power Controller)is a semiconductor power device as the core of the intelligent switch device,it not only has a circuit breaker to achieve real-time protection and solid state relay without mechanical contact,no arc,no noise,fast response,high reliability,Long and resistant to harsh environments and other characteristics,but also integrates the microprocessor and bus communication circuit function modules,to achieve bus communication,intelligent protection and other intelligent functions;With the semiconductor power device technology,solid state power controller Military equipment in the application of more and more widely.In this paper,the IGBT-based DC solid-state power controller,in addition to the traditional solid-state power controller with the on-off function and protection function,the power output semiconductor devices using IGBT,short-circuit protection than the use of MOS tube solid state power controller significantly improved.Firstly,the structure and characteristics of the core power control device IGBT of the DC solid state power controller,the main working characteristics,the comparison with the technical parameters of the power MOS tube,the driving and protection technology,the parallel use technology and so on are analyzed and analyzed for solid state power control Product design to lay the theoretical basis.Secondly,the hardware circuit of the solid state power controller product is designed,including the power supply circuit,the driving and protection circuit,the main control circuit,the power output circuit,the communication and the interface circuit.At the same time,the software design of the solid state power controller product is completed,Embedded software design and host computer control,debugging software design.Finally,the thermal design and reliability of solid-state power controller products were analyzed,including the calculation of heat power consumption,thermal simulation,reliability design principle,reliability model establishment and reliability prediction.The solid-state power controller Product prototype,and in accordance with the design of technical requirements for environmental testing and electrical performance testing,test and test results show that the product technical indicators to meet the design requirements.This type of solid state power controller developed successfully,to solve the traditional solid-state power controller short-circuit protection of the technical problems,successfully supporting a certain type of Navy equipment.