Power conversion apparatus

Abstract

A power conversion apparatus connected to three or more voltage units, includes three or more power conversion circuits connected to respective units of the three or more voltage units; and a multiport transformer connected to the three or more power conversion circuits at mutually different ports, in which at least one voltage unit of the three or more voltage units is an electrical load.

What is claimed is: 
     
         1 . A power conversion apparatus connected to three or more voltage units, comprising:
 three or more power conversion circuits connected to respective units of the three or more voltage units; and   a multiport transformer connected to the three or more power conversion circuits at mutually different ports,   
       wherein
 at least one voltage unit of the three or more voltage units is an electrical load. 
 
     
     
         2 . A power conversion apparatus connected to three or more voltage units, comprising:
 three or more power conversion circuits connected to respective units of the three or more voltage units; and   a multiport transformer connected to the three or more power conversion circuits at mutually different ports,   
       wherein
 the three or more voltage units includes at least a vehicle drive battery, and a plurality of power supply units for supplying power to the vehicle drive battery from outside the vehicle. 
 
     
     
         3 . The power conversion apparatus according to  claim 2 , wherein
 the plurality of power supply units includes at least two units selected from among an AC power source, a DC power source and a solar power source.   
     
     
         4 . A power conversion apparatus connected to four or more voltage units, comprising:
 four or more power conversion circuits connected to respective units of the four or more voltage units; and   a multiport transformer connected to the four or more power conversion circuits at mutually different ports.   
     
     
         5 . A power conversion apparatus comprising:
 a plurality of power conversion units each including a multiport transformer, and three or more power conversion circuits each connected to three or more ports of the multiport transformer; and   a connection wiring that electrically connects, to be in parallel, between at least one power conversion circuit in one power conversion unit and at least one power conversion circuit in another power conversion unit.   
     
     
         6 . The power conversion apparatus according to  claim 5 , wherein
 the connection wiring includes a storage battery connected thereto.