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ElectricPropulsionMotor
Electric Propulsion Motor
FeaturesThe Mega-Guard Electric Propulsion Motor (EPM) is a highly
efficient permanent magnet motor for ship's propulsion.
The Electric Propulsion Motor is able to directly drive the
propeller shaft or can be used in parallel with a combustion
engine. Electric propulsion is applied in case of requirements
regarding zero emission, better manoeuvrability and/or
less fuel consumption for vessels with large difference in
sailing profile. Silent running is another application of
electric propulsion in combination with Mega-Guard Electric
Energy Storage. The Electric Propulsion Motor is controlled
by other Mega-Guard products: High Power Inverter,
Propulsion Control System, Energy Management System
and/or the DC bus Generator. Various sizes of Mega-Guard
EPM are available to suit all applications for full electric,
serial hybrid or parallel hybrid propulsion. Electric Propulsion Motor 200kW
2
Full electric propulsionThe full electric propulsion uses the Mega-Guard Electric
Propulsion Motor to drive the propeller shaft. Electric power
is coming from the Mega-Guard Electric Energy Storage and
charging is done through shore power. The AC grid for hotel
load is generated from the Electric Energy Storage as well.
Serial hybrid propulsionThe serial hybrid uses the the Mega-Guard Electric
Propulsion Motor as well to drive the propeller shaft. Electric
power is coming from either the Electric Energy Storage or
the DC bus Generator. Charging of the battery bank is done
through the DC bus Generator or by shore charging.
Electric Propulsion Motor is mounted in-line with shaft
Electric Propulsion Motor is mounted on the gearbox
via a PTI/PTO connection
Electric Propulsion Motor is mounted between gearbox
and combustion engine
Parallel hybrid propulsionThe parallel hybrid propulsion system use a combustion
engine and an Electric Propulsion Motor to drive the
propeller shaft. The combustion engine and the electric
motor are mounted in parallel in one of following ways:
The Electric Propulsion Motor also works as generator for
battery charging in case combustion engine is running.
Electric EnergyStorage
DC bus
DC busGenerator
HighPowerInverter
ElectricPropulsionMotor
CombustionEngine
Electric EnergyStorage
DC bus
DC busGenerator
ElectricPropulsionMotor
HighPowerInverter
ElectricPropulsionMotor
DC bus
Full electric
Electric EnergyStorage
HighPowerInverter
Serial hybrid
PTI/PTO Gearbox
Parrallel hybrid
155190260330
328328328328
Motor ØMotor Length(mm)
Torque RPM=3600
133265531796
50100200300
(mm) (Nm) Power (kW)
400540680
348348348
106115922122
400600800
RPM=1800
2550100150
Power (kW)
200300400
RPM=900
12,5255075
Power (kW)
100150200
RPM=450
6,2512,52537,5
Power (kW)
5075100
Weight
314286129
(kg)
210300350
Shaft Ø
35353545
(mm)
507070
EPM-292 specification
4444
SAE(No)
444
820 368 2652 1000 500 250 125 550 90 EPM-2923
Ship automation, navigation and electric propulsion 3
175210280350
435435435435
Motor ØMotor Length(mm)
Torque RPM=3600
27054010801620
102215407611
(mm) (Nm) Power (kW)
420560700840
440440450450
2160324043205400
814122116282036
RPM=1800
51107.5203.5305.5
Power (kW)
407610.58141018
RPM=900
25.553.7101.7152.7
Power (kW)
203.5305.2407509
RPM=450
12.726.850.876.4
Power (kW)
101.7152.6203.5254
Weight
5580140200
(kg)
295455535665
Shaft Ø
45457070
(mm)
90100110120
EPM-390 specification
EPM-390
2222
SAE(No)
2211
155190260330
266266266266
Motor ØMotor Length(mm)
Torque RPM=3600
56.5113226339
21.342.685.2127.8
(mm) (Nm) Power (kW)
400540680820
276276280285
4526789041130
170.4255.6340.8426
RPM=1800
10.6521.342.663.9
Power (kW)
85.2127.8170.4213
RPM=900
5.310.6521.331.95
Power (kW)
42.663.985.2106.5
RPM=450
2.655.310.6516
Power (kW)
21.331.9542.653.25
Weight
18354565
(kg)
100125160220
Shaft Ø
35353535
(mm)
35454545
EPM-230 specification
EPM-230
6666
SAE(No)
5555
E�ciency
Power
EPM 98%
Electric Propulsion Motor specification
Casing
Rated at S6 operation Deduct 25% for S1 operation Aluminium seawater protected
Mounting 4x vibration damper or SAE Flange
Coolant flow Coolant pressure drop
5l/min for each 100kW
Environmental cond.
0.05 bar for each 100kW-25 ~ +70°CIEC60945
Class approval LRS, DNV-GL, ABS and risk based assessment
Shaft
Terminations
Splined output, hollow shaft or
Protection
Shaft with flangevia EMC cable glandsIP66
Cooling medium Water/ glycol up to 35°C inletDerating above 35°C: 2% per °Cand temperature
Ambient temperatureMotor with Gear 96%
Electric Propulsion Motor with planetary gear
EPM with Gear
EPM-292-190 with gear 08EPM-292-260 with gear 08EPM-292-330 with gear 10EPM-292-400 with gear 10
Type
EPM-292-540 with gear 10
918, 740, 600 or 509918, 740, 600 or 509585 or 497585 or 497
RPM
585 or 497
Shaft Ø
70100120130
(mm)
160
Weight
210350550760
(kg)
1125
Max Torque
187637515764768511527
Power
100200300400600
(kW) (Nm)
598668798868
Length(mm)
1028
328328388388
Motor Ø(mm)
402
EPM-292-155 with gear 08 918, 740, 600 or 509 5018093850 563 328
navigation andShip automation,
electric propulsion
05-2019
Phone +31 (0)71 5255353, Fax +31 (0)71 5224947, Email [email protected], Web www.praxis-automation.comPraxis Automation Technology B.V., Zijldijk 24A, 2352 AB Leiderdorp, The Netherlands
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NavigationLight Control
HeadingControl System
ElectricSteerable POD
FireAlarm System
WiperControl System
CCTVVideo Distribution
IntegratedNavigation System
ShipPerformance Monitor
FleetManagement System
PropulsionControl System
DynamicPositioning System
ElectricPropulsion Motor
EnergyManagement System
ElectricEnergy Storage
HighPower Inverter
DC busGenerator
Electric FinStabilizer
