Sounds like you are working for a 787 engine study , the more ""electric"" plane, with bleedless engines and electric brakes.....are you?
So far the next gen has this as power supply:(general info copied from AMM part 1)
* Left integrated drive generator (IDG 1) (90 KVA)
* Right integrated drive generator (IDG 2) (90 KVA)
* APU starter-generator (90 KVA below 32,000 feet/9,753
meters, and goes down to 66 KVA at 41,000 feet/12,496
meters)
The IDGs and APU starter-generator supply a 3 phase, 115/200
volts (nominal) at 400 Hz. The AC power system design
prevents two sources to the same load at the same time.
The static inverter supplies a one phase, 115v ac output to the
AC standby bus.
DC Power
Three transformer rectifier units (TRUs) change 115v ac to 28v
dc. The airplane also has these DC power sources:
* Main battery
* Main battery charger
* Auxiliary battery
* Auxiliary battery charger.
The batteries are the backup DC source if other sources do not
operate. The standby power control unit (SPCU) controls the
distribution of dc power.
Standby Power
With the loss of normal power, the standby power system
supplies a minimum of 60 minutes of AC and DC power to
systems necessary to maintain safe flight. The batteries supply
DC power. The static inverter uses battery power to make AC
power. The SPCU controls the distribution of AC and DC
standby power.
