Abstract: A phase-loss control method for a three-phase three-wire converter and a three-phase AC control system are disclosed. The processor executes this method by receiving a power signal, determining if the power signal has a phase loss, and determining whether the power signal had the phase loss at the previous moment. If there was no phase loss at the previous moment, it switches from a second operating state to a first operating state, outputting a first drive signal. If there was a phase loss at the previous moment, it switches from the first operating state to the second operating state, outputting a second drive signal. By detecting phase loss, the system can immediately switch between the first and second operating states based on whether phase loss is present or not, without causing the three-phase converter to shut down. This method allows seamless state switching, improving system stability.

Abstract: There are provided a router for scheduling a packet and a method therefor. The stream classifier decides a stream ID of a packet received from an external source on the basis of header information of the packet, and classifies and outputs the packet. The sequence number allocation unit allocates a sequence number to the packet and classifies the packet into a general packet or a jumbo packet according to a length of the packet. The buffer unit includes a pair of a first buffer for storing the general packet and a second buffer for storing the jumbo packet by the number of stream IDs. The scheduler provides a service priority to general packets stored in the first buffer, rather than jumbo packets stored in a second buffer. The order management unit corrects an output order of packets with a same stream ID on the basis of sequence numbers.