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Aquawatt offers the world’s most unique high
powered electric marine propulsion systems for recreational boats to date.
Instead of petrol smell or loud noise a high tech AC motor provides clean
power with no maintenance and full thrust at all rotation speeds. Keep
your engines room clean!
If you are looking for a real sustainable
investment, this is the solution for any motor- or sailing boat. The huge
advantage compared to a petrol or diesel engine
is the high torque at all speeds and the variability of your power source.
Traditional lead acid batteries, advanced lithium batteries, solar panels
or even a gas- or diesel generator. Your boat can be adapted to any new
technology without the need of changing the main propulsion system. This
system will still be state of the art in twenty years!
Did you know? The world’s largest new cruise
ships are equipped with electric
AC - engines!
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We
recommend not to install cheaper DC (brushed or
brushless) motors, as brushes and magnets tend to wear out or corrode. The
purchase of a
advanced AC induction – motor system is a sustainable life time
investment for your boat. |
The installation of any inboard
motor system is not “rocket science”, but should be
planned and executed by a boat builder
or a experienced person. If this knowledge is
not available, we recommend the use
of our powerful outboard motors which can
easily replace any petrol outboard
engine. The high quality inboard systems are
produced individually, so an option with
two motors mounted in series for double
power is possible as well as other
tailor made adaptations for special requirements.
u 10
KW / 48 V system (high
efficient for solar cats)
AC electric motor/incl. blower
AC
controller 48 V / 550 A
Size:
IEC 160
Voltage
supply: 48 V DC
Power: 10 KW / 1000 rpm (14 hp)
Weight: 80 kg (motor)
8 kg (controller)
Torque: 95 Nm
Air
cooling on motor and controller
Axle/Shaft:
30 mm
Recommended
propeller: 13-16’
S Perfect for cats upto 15 m / 7-9 knts
Pricerange see pdf documentation Special for solar powered cats
(2-10 kw)
u 15
– 25 KW / 96 V system
AC electric motor/incl.
blower
AC
controller 96 V
Size:
IEC 132
Voltage
supply: 96 V DC
Power: 25 KW max. (1/2 h 2500 rpm)
15 KW nom.
2000 rpmWeight: 50 kg (motor)
8 kg (controller)
Torque: 75 Nm /
100 Nm (1/2 h)
Air
cooling (via hose) motor only
Axle/Shaft:
30 mm
Recommended
propeller: 13’
Pricerange see pdf documentation
u 30
KW / 96 V system
AC electric motor/incl.
water pump
AC
controller 96 V
Size:
IEC 132
Voltage:
96 V
Power: 30 KW max. (1/2 h)
25 KW nom. 2000 rpm
Water
cooling / pump 12 V on
Motor / 12 L / min.
Weight 65 kg(Motor)
9 kg controller & equipm.
Torque: 100 Nm
Axle/Shaft:
30 mm
Recommended
propeller: 13’
Pricerange see pdf documentation
These advanced AC induction motors and the controllers have been specially designed and
produced for
The
performance curve of the aquawatt engines is almost linear to the rotation
speed on a
wide range. A petrol or diesel engine
rarely runs at its best working speed and needs a
variable gear box to
adapt at least some of these losses. The AC motor does neither need a
gear box nor a dedicated rotation
speed to run at the most efficient point of operation.
The
full torque is available from as low as 200 rpm to 2000 rpm (range depending on
type
of motor) and then falls due to the
higher speed somewhat which has no influence on the overall
efficiency of 85 – 90%.
When
more thrust is needed at lower speeds the motor controller sensors this and
increases
the power output. If more speed is
possible at the throttle position chosen, the controller optimizes
the power output to get to that
speed.
Setup
example for 48 V 10 KW system
with lithium battery (LIFEPO4)
Example: 12
m catamaran/4 tons/4-5 knots = 2 KW H = 9 hours on 20 KW h battery
12
m catamaran/4 tons/6-8 knots = 6.5 KW H = 3 hours on 20 KW h battery
12
m catamaran/4 tons/10-12 knots = 14 KW H = 1.2 hours on 20 KW
h bat.
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Shaft |
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Motor |
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Controller |
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Battery 1 |
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Battery 2 |
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Breaker |
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Breaker |
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Solar
charger |
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240 V
charger or generator |
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Remote control |
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Main
switch & Fuse |
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Inverter 48 V DC to 240 V AC |
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DC DC
converter
48 V DC to 12 V DC |
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u Checklist
Aquawatt Electric AC Inboard Engines
q
Type of engine q 10
KW (highly efficient cats)
q 15 – 25 KW
replaces 20 – 50 hp diesel engine
q 30 KW
replaces 50 – 60 hp diesel engine
q Space in engine room (min. 500 x 500 x 400 mm min. required
– see dims.)
q Distance to batteries (for main cables)
q Diameter of shaft
q Size of propeller
q Max. rotations per minute of
engine (1000 – 2500)
q Type of batteries
q lead acid AGM q lithium LIFEPO4 (recommended)
q Size of batteries in KW h (ask for a detailed energy
calculation)
q
Generator Diesel / Petrol 4 KW / 5-6 KW / 8 KW / 10 KW
q Solar panels (optional)
q Grid charger for batteries (included with lithium
battery packs)
q Budget: Just send us your requirements and we will
send you a quote.
For one inboard engine with a 10 KW h lithium battery
pack and a 4 KW AC generator budget around
AU$ 22000.00
including all material & GST, excluding installation.
All information based on specific setup / boat types.
Any calculation needs to be verified for
the individual setup.
Version 2.5 |
November 2012 | copyright by aquawatt / all4solar ™