Drives and Control Solutions

Motors, Control Solutions, Power Transmission and Advanced Motion Technology                                                                 

April 18, 2022

 

DCS Invertek Drives Marine Vessel Operators Turn to VFD Controllerd Electric Bow Thrusters 1 400

Marine vessel operators are increasingly commissioning electrically powered and controlled bow thrusters as an energy-efficient and environmentally safer alternative to hydraulic-based systems on boats.

With 100 per cent more efficiency and little or no environmental hazards such as oil or other contaminants leaking from hydraulic lines, it has become cost-effective to build new or retrofit electric thrusters controlled by variable frequency drives (VFD).

Specialist propulsion company Schottel has chosen Invertek Drives Optidrive VFD technology for a contract with a boatyard building a fleet of new crew boats for Singapore’s offshore marine industry.

Schottel appointed Invertek Drives Far East Pte Ltd in Singapore, who are specialists in the design and installation of VFD thruster control systems.

The powerful Optidrive P2 VFD with an IP55 enclosure has been selected for the project, including 75kW, 90kW and 160kW versions.

Greater energy efficiency and less environmental impact

Henry Beh of Invertek said: “The marine industry, like most others, is looking at ways to become more energy-efficient and to reduce its impact on the environment.

“We are pleased to have been chosen by Schottel to supply our motor and drives for their electric thrusters. Many owners and shipyards are choosing electric thrusters over hydraulic versions on crew boats used for the offshore industry. They are building a fleet of boats that will use the Schottel thruster with our Optidrive VFD control systems.

“The electric system is far more efficient than their hydraulic counterpart, which reduces running costs in addition to the fact that it’s much easier to maintain and an environmentally safer option in terms of no hydraulic oils or contaminants.

He added: “We designed and built a bespoke control panel in-house based on the client’s specific requirements. This ensures the system is dedicated to the boat where the system is being installed and means there is less room for error, making installation and commissioning straight forward.

“For this project, we used high-performance Optidrive P2’s VFDs, including a 75kW, 90kW, and 160kW. The advantage of this drive is that it’s robust and DNV certified for marine use. Additionally, its ease of use means it integrates easily into the application.”

Henry said the advantages of electric bow thrusters meant many vessel owners and operators were increasingly moving towards electric thrusters on new and conversion projects.

DCS Invertek Drives Marine Vessel Operators Turn to VFD Controllerd Electric Bow Thrusters 2 725

Smoother and more accurate control 

“The VFDs allow a much smoother and more accurate speed control on the electric thruster compared to hydraulic systems. This is important for the accurate manoeuvering of a boat,” added Henry.

“The system is also significantly more efficient, which reduces running costs in addition to the fact that it’s much easier to maintain and an environmentally safer option in terms of no hydraulic oils or contaminants.

“The reason for the greater efficiency is that a hydraulic system draws from the main diesel motor. This means the diesel motor has to increase its output to power both the propulsion of the ship as well as the bow thrusters when they’re being used.

“Having a separate electric powered unit with VFD control is more efficient and allows for more precise control, only used when needed. Additionally, electric motors are more compact, taking up less space, which is another important consideration within the confines of a boat.”

So far, 20 Optidrive P2s have been used on the fleet programme, with more to follow.

The Optidrive P2 is one of the most powerful VFDs in its class. It combines high performance with ease of use. It’s aimed at high performance and demanding and can handle 150% overload for 60 seconds.

More details can be found here

DCS Invertek Drives Marine Vessel Operators Turn to VFD Controllerd Electric Bow Thrusters 3 200

 

 

Source

 


Editor's Pick: Featured Article


 

DCS Siemens SIRIUS Controls Ensures Cold Beer 1 400

Breweries are known for transforming malt, hops, and yeast into beer in gleaming brewing kettles and large fermentation tanks linked by numerous pipes.

Over the centuries, the equipment for mashing, lautering, boiling, and fermenting beer according to carefully guarded recipes has been steadily perfected.

 

The chiller is the heart of the brewery

One of the most important parts of the brewery, and perhaps the least visible, is the chiller. The fermentation temperature of the beer is crucial, which means that the heat generated by the yeast fermentation must be carefully controlled by the chiller.

If the beer ferments at too high a temperature, the yeast can produce a variety of undesirable aromas that ruin the beer.

According to Justin Thomas, President of G&D Chillers, based in Oregon

"The chiller is the heart of the brewery. Owners invest not only a lot of money in the brewery and brewing equipment, but also a great deal of time in the production of beer. But if the chiller fails, all that goes out the window."

Partnerships to keep pace with growth

Thomas says that growth at G&D Chillers has been exponential over the past 15 years. To continue this rate of success, the company had to look for new ways to meet customer demands for reliable, state-of-the-art chiller options.

For example, G&D Chillers recently teamed up with Siemens and the global distribution and supply chain solutions company WESCO to meet these needs and stay ahead of the competition. "We're still a small manufacturing company, but big enough to produce some technically advanced equipment," says Thomas. "We've always been service-oriented and always stood by our equipment, no matter what the problem. We get the same kind of support and service from Siemens that we give to our own customers."

 

Read more here 


 


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Nationwide Equipment NetworkWhat’s the secret to providing superior service and staying competitive in a changing market? Well, you might learn something from ALTA Refrigeration’s experience. Over ten years, it transformed itself from a custom engineering services company into a scalable industrial equipment manufacturer, using an edge-oriented control architecture to efficiently manage a growing installed base.

 Originally started in 1975 as Industrial Refrigeration Services, ALTA has been designing and installing refrigeration systems across the United States for more than 45 years. And for a long time, they were large, custom-designed systems that used a central machine room to deliver refrigerant to various facility areas through long, overhead piping runs.

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International Application by PILZWhen the Swiss engineering company Peter Huber AG won the order to upgrade and convert the control and safety technology on manual-feed bending machines - to include an additional sheet metal feed via robot - alongside the requirements for economy, flexibility and efficiency there was also one key condition in the requirement specification: wherever possible, the envisaged solution should continue to use the existing controllers.

As cooperation between human, robot and machine presents a complex challenge not only in control terms but also regarding safety, an innovative solution was sought. Peter Huber found it in the modular safety relay myPNOZ.

 

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Dyneo+ by Nidec Leroy-SomerWith more than 70 years of experience, NOVENCO Building & Industry, a member of the SCHAKO Group, ranks among the world leaders in design, development and manufacture of ventilation products and systems on the technological forefront of performance and durability. The company provides a vast choice of energy-efficient and life safety ventilation systems worldwide, which are well-known for uncompromising quality and the highest standards within a wide range of industries.

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