FES Maintenance manual Version 1.12
September 2016
Page 6 of 26
3.2 Description of main FES components
3.2.1
Electric motor
Motor construction is outrunner brushless synchronous permanent magnet motor
with electronically controlled commutation system 3 phase. Rotor position is determined
by 3 hall sensors and additional 4th hall sensor for automatic propeller positioning.
This motor can work only in combination with suitable electronic motor Controller
which transform DC current from Battery packs to 3 phase current which supply motor.
Electrical motor power ratings (type
FES-LAK-M100) at 116V on motor controller and
loaded with propeller (type FES-LAK-P10-100):
Maximum torque
75 Nm
Maximum current
200A
Maximum Voltage
180V
Rpm non loaded
45 rpm/V
Rpm non loaded (at 116V DC on Controller)
5300 rpm
Non loaded motor current (at 5300 rpm)
16-18 A
Rpm loaded with
FES-LAK-P10-100 propeller (1m diameter)
4500 rpm
Battery current loaded (4500 rpm, 116V) with
FES-LAK-P10-100
up to 200 A
Rotor rink diameter
177mm
Motor length
100mm
Motor weight cca.
7,3 kg
Motor efficiency
82-95 %
Maximum allowed temperature
90 °C
Minimum allowed starting temperature
-20 °C
More detailed description of motor is provided in FES Motor manual.