James./ Steve"
Solar charger with 144 volt battery charge, MPPT type with max input 20 amp and 366 volts are available from
From: http://www.sunfinepower.com Battery management systems are also available from both USA and AUS suppliers Batteries are "thunder struck type".'
Steve The boat is a 1994 model 42 Ft. fitted as 12 volt DC and 110 volt AC. AUX 10.5 Diesel and 40 internal charger / inverter/
The installation was with 30 Hp three cylinder Perkins model M30. with shaft drive Z type gearboxes and through the hull shaft with three blade 13X12 props Purchased from Sarasota Florida 2007 sailed to AUS in 2008
No previous experience with electric propulsion
Throw the lot out start again from scratch. All wiring / plumbing and fitting out. Completely new arrangement for power distribution including supply to the air conditioning system. Hence the inverter as part of the solar MPPT system. Three 12 volt DC sub bboardsoards one for each hull and one for instruments.
1200 AH because I am rigging with 4 off 12 volt PMMC motor furlers and two anchor winches, main sail winch , etc. Need 800 amp bus system for these functions. Hence 12003C batteries.
The motors are operable at various voltages to get the power and speed you need to run the hulls. 144 volt max speed 1500RPM
Chose 144 V as a compromise. Between to higher voltage Rating of switch gear and power required.
These motor run as re-gen without any additional components, four quadrant control, So this eliminates all that weight of your standard diesel gen set. Hence the light weight diesel with enough power to drive the boat directly or re gen, if stationary and no wind or sun. Electric motor is Coupled to re-gen from propellor shaft or drive from a diesel or a combination of both, including diesel and electric drive together. 45 KW
Two separate systems of 30 kw electric and 20 hp diesel coupled, if required or re-gen by diesel without propellor shaft drive. If your electric motor fails you have only one left in the other hull. I can revert to Diesel drive.
The question of the propellor size pitch and blade area is a study by its self.
It will be interesting to see the actual re-gen figures when it is operational, I intend to motor sale with this set up as standard operation. Throttle position also can control re-gen power, stalling the prop is another issue. Software function. Ho Ho.
What other issues are you interested in?
On 11/09/2012, at 3:39 AM, James Sizemore wrote:
Finding 144 volt solar charger will be hard. But how about this instead use micro-inverters on each cell send the AC out thru your normal charger?
Hi Colin,
Well you peaked my interest.
I assume you have a 420 Lagoon? If so they could initially be purchased with a 72V system. I'm just wondering if you had any experience with that system prior to going to the 144V system. You see I have a 410 SE with the Solomons Tech system running 144V. I also have a 16KW diesel genset which I wish was a little bigger only for maximizing the motors potential, I run at a max of 9KW at about 7-8 knots. I'm just wondering why you're running so big. I'm also running 12 AGM's at this time @ 200AH.
I'm not sure I understand why you're running diesels as backups. With a proper sized Genset you can run as long as you have fuel on board, probably longer than used as propulsion, since the genset usually gets better mileage. Are you then going to maintain the sail drives?
One thing I'm very interested in is a solar controller that can handle 144V output to the propulsion bank. Have you seen anything over there?
24" props…WOW!
Steve in Solomons MD
Lagoon 410 SE
Hi my name is Colin Freeman and I am in Darwin Australia. I am refitting a 42 Lagoon with electric drive and refer you to
www.enstrol.si The EMRAX motor is 11.7 kg and can be used continually up to 40KW, peak 60kw with voltages up to 300volt. Several controllers are avialable for this motor, see web site for details.I am using Piktroniks SAC41 Water cooled units (www.piktronik.si) Slovenia.
I am using 144 volt 160AH life batteries and expect 25KW per engine continuous, (water cooled) backed up with a 20hp al water cooled diesel weighing 55kg (gearbox also) two units one in each hull.
46 solar panels @80 watts and two Mppt solar controller with 5KW inverters w soft start for in house operation. (air con). House battery 12 volt 1200AH, 144/12 volt dc/dc converters as well as solar and twin wind generators.
can assist with sourcing of all components if you need. I purchase direct from China manufacturers.
My lagoon currently weighs 13 tonne and will be 14 tonne when converted
Prop size is 24 inch RH 22 pitch 85 % area three blade and expect a cruise speed of 10/11 knotts @ 1200 rpm on the motor
Hope this is of help to you I have been designing and chasing parts for two years as the work proceeds.
Good Sailing
On 07/09/2012, at 3:27 AM, R. Jason Adams wrote:
No comments:
Post a Comment