250 W Power Management Unit

The 250W Power Management Unit (PMU) provides on-board electrical power generation, battery management and power distribution for small to medium-sized UAVs.

If you have an alternator on your gas engine, connect it to this PMU for stable DC power and to keep the battery charged. If your alternator is not producing power, this unit supplies the aircraft with power from the connected battery.

250 W Power Management Unit Features

• Multiple independent, individually programmable power outputs:
  • Avionics: 12 – 21 VDC, 7.5 Amps (120W max)
  • Payload: 12 – 21 VDC, 7.5 Amps (120W max)
  • Servo: 5 – 12 VDC, 10 Amps (120W max)
• Outputs are battery-backed and switchable (on/off) via hardware signal or remotely via command.
• Dual (redundant) battery support. The PMU includes two independent and identical battery chargers. Supported battery types include
  • LiPo: 5S, 6S
• • LiS: 7S, 8S, 9S, 10S
  • LiFe: 5S, 6S, 7S
• Industry-standard 28 VDC output (available during power generation and when the PMU is connected to umbilical power).
• RS232 and CAN control and monitoring interface provides extensive monitoring and reporting of voltages, currents, battery charge status, temperature.
• Weight: 290g (10.2 oz)
• Dimensions: 124.4 x 85.0 x 32.5mm

PMU Product Brief

PMU Manual

About Millswood Engineering

Millswood Engineering is a small electrical & electronic engineering company located in Adelaide, South Australia.

Their mission is to make innovative and meticulously engineered products, principally for the Unmanned Aircraft System (UAS) market. To date they have focused their efforts on UAV power and safety systems. All Millswood Engineering products are designed and tested in Australia.