Intelligent dual-power electronic fast converter and conversion method

The invention provides an intelligent dual-power electronic fast converter and a conversion method, and relates to the technical field of power supply equipment. The converter comprises an intelligent control conversion part composed of two three-phase bridge circuits, two limit voltage circuits, phase sequence and open phase detection circuits of a common power supply and a standby power supply, and a logic conversion circuit. A mechanical and electrical execution part consists of a Schmitt trigger, a power electronic device and a solid-state relay; phase sequence and open-phase detection is performed on the three-phase voltage signal of the frequently-used power supply or the standby power supply; when the input of the frequently-used power supply is open-phase, one path of output of the logic conversion circuit starts a solid-state relay through 5V electricity and is connected to a starting coil of an alternating-current load; the other path of output enters the Schmitt trigger, and a 5-volt 4-millisecond