The Integrated Power Technology Corporation™ proposes deploying a fleet of Turbofoil® equipped vessels configured for rated generator power of one to seven megaWatts depending in which geographic location it's deployed. Thus the Turbofoil®, designed modularly, may comprise anywhere from a little more than a dozen to almost one hundred 100hp generators. Thus, in a rugged Turbofoil® design, the weight of the motor/generators alone comprize the vast majority of the maximum deadweight tonnage of the vessel, whereas in a streamline Turbofoil® design, the sum of the motor/generators could weigh about one-third or less of the total vessel. Here we evaluate candidate Electrical Generator Manufacturers for their suitability in developing this application.
Company Name |
Technology Specifications |
Qingdao Haixi Electric Machine Company, Ltd. (Haixi Electric) | Qingdao Haixi Electric's superconducting electromagnetic expertise and access to rare earth elements for permanent magnets could bring great value to the design of the turbine in IPTC's Turbofoil® vessels. |
Grainger | Grainger 75hp 40.5KVA Generator 670lbs. |
Marathon Motors |
Marathon-Motors.com , 100 Hp, Weight 1296lbs., $8,001.70
A 7MW regime would require 94 of these for a total cost of $752,159.80 and would weigh 60.9 tons, per Turbofoil®. A more typical regime of 3.6MW requires 49 of these, for a total cost of $392,083.30, weighing 31.8 tons, per Turbofoil® for a total of 95.4 tons @ $1,176,249.90 for an entire typical configuration. |
Automationdirect.com |
Automationdirect.com , Marathon Electric Y575 Blue Max series, 100 hp, 3-phase, 230/460 VAC, 1800 RPM, $7671.00, 1308lbs. datasheet
A 7MW regime would require 94 of these for a total cost of $721,074.00 and would weigh 61.5 tons, per Turbofoil®. A more typical regime of 3.6MW requires 49 of these, for a total cost of $375,879.00, weighing 32.1 tons, per Turbofoil® for a total of 96.3 tons @ $1,127,637 for an entire typical configuration. |
Thomas Net |
Thomas Net , 300 hp, 2980lbs., No price given "G4-7U", GE M9990
A 7MW regime would require 32 of these and would weigh 47.7 tons, per Turbofoil®. A more typical regime of 3.6MW requires 16 of these, weighing 23.8 tons, per Turbofoil®. |
Thomas Net |
Thomas Net , 400 hp, 3909lbs., $26,750 List Toshiba, A4004FLF4OM
A 7MW regime would require 24 of these for a total cost of $642,000.00 and would weigh 46.9 tons, per Turbofoil®. A more typical regime of 3.6MW requires 12 of these, for a total cost of $321,000.00, weighing 23.5 tons, per Turbofoil® for a total of 70.5 tons @ $963,000 for an entire typical configuration. |
Thomas Net |
Thomas Net , 500 hp, 4755 lbs $28,055 List Toshiba, B5004FLG3BM
A 7MW regime would require 19 of these for a total cost of $533,045.00 and would weigh 45.2 tons, per Turbofoil®. A more typical regime of 3.6MW requires 10 of these, for a total cost of $280,550.00, weighing 23.8 tons, per Turbofoil® for a total of 71.4 tons @ $841,650 for an entire typical configuration. |
Allen-Bradley Rockwell Automation |
Allen-Bradley Rockwell Automation , renowned U.S. leader in industrial process control, has a whole division dedicated to marine applications, complete with All Electric Vessel drive and power management in Medium Voltage systems.
Integrated Power Technology Corporation™ assesses a TRL 7 as Rockwell Automation has many years of experience in this rapdily advancing field, and can very likely readily provide a complete integrated solution in the form of ship-wide control and visualization, and commercial off-the-shelf (COTS) technology for the design of especially the Turbofoil® motor/generator system. |
Schottel GmbH | Schottel GmbH specializes in the development, design, production and marketing of azimuthing propulsion and manoeuvring systems, as well as complete propulsion systems with power ratings of up to 30 MW for vessels of all sizes and types. One possible application of Schottel's technology appears in testing the Turbofoil® concept on a prototype scale vessel using one of Schottel's COTS SRT-series Rim Thrusters as turbine/generator (inverse its typical operation). |
These all have been type: Totally Enclosed Fan Cooled (TEFC) High Efficiency AC Induction Motors. Some cost savings may be achieved through customization, water cooling for instance. The "sweet spot" may actually be around a configuration comprizing generators of 400 hp to 500 hp nominal rating due to price/availability and total weight of the generators, in an operating regime of flow rate vector sums ranging from 20 to 36 kts. It seems apparent that optimal configurations must match the flow rates of their intended regime within a range of 5 kts or so.