User’s Manual for Advanced Axial Flux Synchronous Motors and Generators
www.emrax.com Version 4.5 / January 2017 43
12. EMRAX motor working as a generator and its integration into the hybrid system
EMRAX motors can be used as generators for electricity production. The same performance characteristics can be achieved in
the motor and generator modes of operation. Technical data and graphs for the generator application are the same as for the
motor application if the generator is driven by the controller. In case the generator is driven without a controller the power /
torque is approximately 50% lower, because there is no control of the correct electrical-mechanical angle at load. Also an
additional controller for converting generator three phase alternating signal to grid signal (230V/50Hz) is needed.
The EMRAX motor can be used in a hybrid propulsion system as a generator, which generates energy and charge the batteries in
regeneration mode by using the controller and battery management system (BMS). The controller and BMS at the same time
drive the diesel engine on the right power/RPM for charging the batteries at optimal level. At the end of charging they also
balance the battery cells and turn off the diesel engine. Emsiso emDrive controllers and BMS system from the REC Company, can
be done in Slovenia.
13. EMRAX motor ingress protection (IP CODE)
IP21:
a) Air Cooled (AC): only air cooled
b) Combined Cooled (CC): air and liquid cooled (water/glycol mixture)
Figure 39: EMRAX IP21
IP65:
Liquid cooled (LC): Totally closed motor. Dimensions and weight of this motor are the same as for EMRAX with IP21.
Continuous power / torque are up to 20% lower, peak is the same compared to EMRAX with IP21.
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