Airbus have a service bulletin to install a small static inverter. Input 28VDC Output 115VAC 60 HZ 150VA output. It lives aft of the sidestick controller and provides power to an outlet located in the same area. We use these to charge lap tops and mobiles on our A320 AC. Installation is covered by Airbus SB 24-1097. The inverter is manufactured by Avionics Instruments inc. 1414 Randolph Ave. 498 NJ 07001 Avenel usa (Airbus vendor code 10933) Inverter P/N 1-002-0102-1830. Installation would take typically 10 MH per side. There may be a higher output model available, perhaps a talk with the manufacturer or Airbus would be useful.
Regards TC