UAV Factory GPU User Manual page 7

4. Generator
GPU is available in brushed or brushless versions. In the brushed GPU version, the brushed generator's voltage output
must be within 13-50 V range. If the voltage out is below 13 V, GPU will automatically switch to battery source.
In the brushless GPU version, the 3-phase rectifier is used between the generator and the internal DC-DC converter of
the GPU (refer to Figure 5). Therefore DC voltage at the DC-DC converter is equal to rectified value of generator's AC
voltage. In this case generator's line voltage RMS value must be within 10 - 35V range. Line voltage RMS value can be
measured between any two leads of the generator. If the voltage out is below 10 V, GPU will automatically switch to
battery source
UAV Factory USA LLC.
50 South Buckhout Street,
Irvington, NY 10533 USA
Phone: +1 (914) 591 3070
Fax: +1 (914) 591 3715
Email: josephm@uavfactory.com
Brushed
generator
G
Figure 4 Brushed generator and GPU internal connection
J2
connector
Brushless
generator
a
b
G
c
Figure 5 Brushless generator and GPU internal connection
GPU
J2
connector
converter
GPU
UAV Factory LTD. EUROPE
24A-52 Ganibu Dambis,
LV1005, Latvia
Phone: +371 29119398
Fax: +371 63048747
Email: sales@uavfactory.com
7
DC-DC
DC-DC
converter