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 aquawatt advanced

 electric inboard engines

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aquawatt Elektromotor

 

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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!

 

 

Textfeld: 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!
 
 

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.

Textfeld: 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.

 

Textfeld: Distance of the mounting rails width is 550 – 600 mm for all engines. Allow 500 m space in length for water cooled versions and 620 mm for air cooled versions. See IEC doc.

 

 

 

 

 

 

 

 



u 10 KW / 48 V system (high efficient for solar cats)

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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

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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)

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Weight:  50 kg (motor)

                 8 kg (controller)

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Torque:  75 Nm / 100 Nm (1/2 h)

Air cooling (via hose) motor only

Axle/Shaft: 30 mm

Recommended propeller: 13’

Textfeld: Use standard shafts & props
 

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Pricerange see pdf documentation

 

 

u 30 KW / 96 V system

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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 / Thrust Bearing included!

Recommended propeller: 13’

Pricerange see pdf documentation

ACMOTOR_IEC_DIMENSIONS.gif

 


 

These advanced AC induction motors and the controllers have been specially designed and

produced for the aquawatt boat propulsion systems. Each motor is fully enclosed.

 

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.

 

Shaft

Motor

Controller

Battery 1

Battery 2

Breaker

Breaker

Solar charger

240 V charger or generator

Remote control

Main switch & Fuse

Inverter 48 V DC to 240 V AC

DC DC converter

48 V DC to 12 V DC

 

 

 

 

 

 

 

 

 


 

 


 

 

 

 

 

u Checklist Aquawatt Electric AC Inboard Engines

 

Textfeld: Props for shaft drives
 
Axle / shaft diam: 30 mm
 
Prop size: 13-16‘
Prop pitch: 18 – 24‘
 
Change of pitch 1‘ equals to 200-400 change of rpm
 
www.solas.com.au
www.kiwiprops.co.nz
www.ozpropellers.com.au
www.seahawk.com.au
 

 

 

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) 32.5 (200 A) - 70 mm2 (350 A)

q Diameter of shaft (Min. 30 mm upto 1.5 m)

q Size of propeller (13 - 16')

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. Information to change withour prior notice.

 

 

Version 2.5 | November 2012 | copyright by aquawatt / all4solar ™