Electric engine upgrade on fishing vessels

NOENCO - Nordic Energy Consulting

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Identification and reduction of energy consumption. NOENCO points to IE3 onboard fishing vessel!

In industrial and marine applications electric drive units are responsible for 30% to 40% of all electrical energy generated. The entire drive system including the application is a significant factor regarding energy consumption and the saving potential is typically about 30% to 60%. 

NOENCO undertakes a review of installations in fishing vessels, built in 2004, prior to EU-demands on efficiency classes for asynchronous motors. 

NOENCO screening of savings that could be considered, switching from old electric motors to IE3-motors
NOENCO has selected 20 units based on usage, hours run per year and size. 

What are the energy-savings related to changing electric motors to IE3 motors? 
What are the energy-savings related to frequency regulation of pumps connected to engine installation?

Annual operation hours engine                                                  6000 approx
Annual operation hours electric engines (IE3), mean value   4650 approx

A simple calculation on achieved savings upon completion in 1 year

  • 18.000 litres of fuel – approx 183.000 kW
  • Equivalent of 115.000 nkr/year
  • TBT; 1.3 years
  • Profit in 10 years; 1.700.000 mio nkr. / 185.000 Euro

Premium Efficiency – IE3 will become mandatory in Europe
Standard IEC 60034-30-1 defines energy efficiency classes for asynchronous motors. 
Regulations (EC) 640/2009 and 04/2014 establish the conditions for converting towards the new energy-efficient technology. 

Since 2011 IE2 has been in place as the minimum efficiency
January 1, 2015. Only motors in the power range from 7.5 to 375 kW complying with Energy Efficiency Class IE3 will be permitted for line operation in the European Economic Area from this date. This is a legal requirement. 
January 1, 2017. Saw the expansion of statutory provisions on motor efficiency. Since this date, the energy efficiency class IE3 has been mandated for motors with power ratings from 0.75 to 7.5 kW, with laws now covering all motors ranging from 0.75 to 375 kW.

The IE (international efficiency) efficiency classes:
  • IE1 – Standard Efficiency

  • IE2 – High Efficiency

  • IE3 – Premium Efficiency

IE3 motors have a differnet behavior
The main objective of the IE3 Standard, which will apply throughout the EU since 2015, is to achieve a lasting reduction in energy consumption of electric motors that are operated direct on line and ultimately to make a contribution to the demanding European climate targets in this way.

The energy savings of IE3 motors are mainly based on lower nominal currents. However, starting currents are higher for technical reasons, especially the so-called inrush current of IE3 motors is noticeably higher in direct comparison with IE2 models. 
A number of factors need to be considered before switching to IE3.  

Less power consumption brings costs down
Change-over to energy-efficient motors pays off. They reduce energy consumption substantially and thus cut operating costs. 
Whatever requirement you need to meet, NOENCO can point to the right energy-efficient motor for you as part of your installation. 

Change-over to energy-efficient motors pays off. They reduce energy consumption substantially and thus cut operating costs. 
On any similar project onboard ships, fishing vessels, passenger ferries, anything related – NOENCO can help you obtain energy-savings.

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NOENCO - Nordic Energy Consulting
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Niels Dal Pedersen
+ 45 61 66 77 48