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Swedish long-haul operator Abbekås Åkeri (Abekkas Haulage) has fitted a Hultsteins Ecogen system to one of their 25.25m refrigerated drawbar vehicles which, says the company, is expected to extend the working life of the two diesel fridges, while at the same time making significant cuts in fuel consumption and harmful emissions.
Abbekås Åkeri operate 50 Scania and Volvo temperature-controlled vehicles and drawbar trailers, carrying mostly food products from Malmo in the south to Gothenburg and Stockholm in mid Sweden – making round trips of over 1,200kms every day.
Vice President, Mikael Nilsson explains:
“It was approaching the time to replace one of the Carrier Vector 1850 units because at 10 years old, the diesel engine was past its best. However, instead we opted to fit an Ecogen hybrid generator to the PTO on the Scania truck, which would provide electrical power to both fridge units and allow both engines to remain switched off for the entire 10-hour journey.”
From day one, the company reported a saving of 6-8 litres of diesel per hour, with the Carrier units running silently on the road and performing as normal. Also, given that each litre of diesel produces 2.68kgs of carbon, it was easy to calculate an approximate annual carbon saving approaching 50 tonnes.
Furthermore, based on information provided by Trafikverket, the Swedish Transport Administration, a vehicle of this specification – using one diesel engine instead of three – will also cut NOx and particulate emissions by 65% and 80% respectively.
“This is where environmental considerations and commercial efficiency meet,” says Mikael. “By retrofitting the Ecogen electric generator and effectively switching off the diesel fridge engines during transit, we not only save on fuel but also extend the life of each fridge by at least two years. All the while, cutting harmful emissions and making life better for our drivers and everybody around them.”
The 25.25m refrigerated drawbar combination is the longest standard road trailer in Europe and normally requires three diesel engines to drive the vehicle and cool each box. Using the Ecogen system, however, only one engine is used: The fridge unit on the truck can be independently operated and when the drawbar trailer is required, it simply plugs in to the suzy coupling for electrical power to drive the second fridge.
Although Hultsteins’ electric generation systems are widely used throughout Europe and have been available since the 1960s, this is the first to be retrofitted by Abbekås Åkeri. Hultsteins’ CEO, Börje Axelsson points to the simplicity and fast pay-back of the system:
“Ecogen can be retrofitted easily to any truck with a PTO (power take off) and will drive any type of conventional diesel fridge with electric standby, from any of the major manufacturers. Rather than intending to replace the existing refrigeration system, Ecogen works in tandem with the fridge unit to provide a cheaper and less harmful power source – generating a constant 400-volt, 3-phase electrical power to the same standard as the mains supply. With this typical application, operators can expect to extend the life of existing fridge units, while seeing a return on investment in under 15 months.”
Established in 1968, Abbekås Åkeri is a family business with its focus on the transport and storage of food. From its base in Staffanstorp and supported by extensive warehousing facilities, the company operates scheduled services in Stockholm, Västerås, Östergötland and Gothenburg with departures seven days a week.
ends.
Further information for editors
Contact:
Stephen Maile
Hultsteins UK Limited
Unit 3
Guinness Park Farm
Leigh Sinton
Worcester
WR13 5EQ
Tel: +44 (0) 1886 886169
Mobile: +44 (0) 7483 122692
PR contact:
Liam Olliff, M1 Marketing
Tel: +44 (0) 1934 712701
Mob: +44 (0) 7779 240321
About Hultsteins:
Hultsteins is a family-owned company rooted in Sweden, that launched the first fossil-free hydraulic refrigeration unit in 1962. The company aims to offer optimal refrigerated transport technology that meets the most demanding customer requirements and to guarantee the same high standard of service and assistance. Today, Hultsteins manufactures hydraulic and electric refrigeration systems, in the UK and Sweden and all products are designed for external mounting on the vehicle to save cargo space.
Swedish long-haul operator Abbekås Åkeri (Abekkas Haulage) has fitted a Hultsteins Ecogen system to one of their 25.25m refrigerated drawbar vehicles which, says the company, is expected to extend the working life of the two diesel fridges, while at the same time making significant cuts in fuel consumption and harmful emissions.
Abbekås Åkeri operate 50 Scania and Volvo temperature-controlled vehicles and drawbar trailers, carrying mostly food products from Malmo in the south to Gothenburg and Stockholm in mid Sweden – making round trips of over 1,200kms every day.
Vice President, Mikael Nilsson explains:
“It was approaching the time to replace one of the Carrier Vector 1850 units because at 10 years old, the diesel engine was past its best. However, instead we opted to fit an Ecogen hybrid generator to the PTO on the Scania truck, which would provide electrical power to both fridge units and allow both engines to remain switched off for the entire 10-hour journey.”
From day one, the company reported a saving of 6-8 litres of diesel per hour, with the Carrier units running silently on the road and performing as normal. Also, given that each litre of diesel produces 2.68kgs of carbon, it was easy to calculate an approximate annual carbon saving approaching 50 tonnes.
Furthermore, based on information provided by Trafikverket, the Swedish Transport Administration, a vehicle of this specification – using one diesel engine instead of three – will also cut NOx and particulate emissions by 65% and 80% respectively.
“This is where environmental considerations and commercial efficiency meet,” says Mikael. “By retrofitting the Ecogen electric generator and effectively switching off the diesel fridge engines during transit, we not only save on fuel but also extend the life of each fridge by at least two years. All the while, cutting harmful emissions and making life better for our drivers and everybody around them.”
The 25.25m refrigerated drawbar combination is the longest standard road trailer in Europe and normally requires three diesel engines to drive the vehicle and cool each box. Using the Ecogen system, however, only one engine is used: The fridge unit on the truck can be independently operated and when the drawbar trailer is required, it simply plugs in to the suzy coupling for electrical power to drive the second fridge.
Although Hultsteins’ electric generation systems are widely used throughout Europe and have been available since the 1960s, this is the first to be retrofitted by Abbekås Åkeri. Hultsteins’ CEO, Börje Axelsson points to the simplicity and fast pay-back of the system:
“Ecogen can be retrofitted easily to any truck with a PTO (power take off) and will drive any type of conventional diesel fridge with electric standby, from any of the major manufacturers. Rather than intending to replace the existing refrigeration system, Ecogen works in tandem with the fridge unit to provide a cheaper and less harmful power source – generating a constant 400-volt, 3-phase electrical power to the same standard as the mains supply. With this typical application, operators can expect to extend the life of existing fridge units, while seeing a return on investment in under 15 months.”
Established in 1968, Abbekås Åkeri is a family business with its focus on the transport and storage of food. From its base in Staffanstorp and supported by extensive warehousing facilities, the company operates scheduled services in Stockholm, Västerås, Östergötland and Gothenburg with departures seven days a week.
ends.
Further information for editors
Contact:
Stephen Maile
Hultsteins UK Limited
Unit 3
Guinness Park Farm
Leigh Sinton
Worcester
WR13 5EQ
Tel: +44 (0) 1886 886169
Mobile: +44 (0) 7483 122692
PR contact:
Liam Olliff, M1 Marketing
Tel: +44 (0) 1934 712701
Mob: +44 (0) 7779 240321
About Hultsteins:
Hultsteins is a family-owned company rooted in Sweden, that launched the first fossil-free hydraulic refrigeration unit in 1962. The company aims to offer optimal refrigerated transport technology that meets the most demanding customer requirements and to guarantee the same high standard of service and assistance. Today, Hultsteins manufactures hydraulic and electric refrigeration systems, in the UK and Sweden and all products are designed for external mounting on the vehicle to save cargo space.
Hultsteins has long been known for fossil-free solutions for refrigerated truck transport. The company’s hydraulic-powered refrigeration units have given it a unique position in a market where diesel-driven units are increasingly being called into question.
In the UK, Cold Connect has held a similar position by offering sustainable refrigerated transport powered by electricity or hydraulics instead of diesel. The companies have previously worked closely together and now Hultsteins has acquired Cold Connect.
“The acquisition of Cold Connect gives us a solid foundation in a very interesting market. It also expands our technical knowledge about electricity and hybrid solutions, which means that we are well-equipped to meet future refrigerated transport requirements,” says Hultsteins’ CEO Börje Axelsson.
In the British market, Hultsteins will build on both companies’ innovative approaches to refrigerated transport.
“The integration of Cold Connect with Hultsteins was a natural step as the companies have many similarities, not least when it comes to smart solutions that are sustainable for both customers and the environment,” says Stephen Maile, CEO of Cold Connect.
As many car enthusiasts and tech heads would know – factory fitted isn’t always best. The Kubota Lowboy GL series generators use Sawafuji Electric Company manufactured alternators as factory standard. They’re very well built and reliable, and proven in Japan for a long time. However, the Sawafuji Alternators require a very high level of electronics and are extremely complicated in their design. Information on the alternators and other products from the company are limited due to the complex engineering and electronics on the product.
The alternators, and particularly the AVRs, have reported some failures under extreme weather conditions in Australia. Time and time again there has been a need to refit the alternators in case of failures with a much more reliable product.
The main reasons for refitting include:
RFL Alternators, in partnership with Macfarlane Generators, have the answers! The RFL RF2-12.5 Bi-Gen is a technologically advanced PM brushless alternator, offering the highest energy efficiencies while maintaining minimal physical size – setting a new industry standard. Its PM design brush-less internal magnetic voltage regulation (no AVR or electronics) means that possible points of failure are kept to a minimum by eliminating traditional brushes and AVRs. In other words – keep it simple stupid!
There were significant advantages when refitting a Kubota Lowboy GL 6000 with RFL alternators; the units registered 10% more power, 10-15% fuel savings, and much better THD levels.
Based in Sydney, Australia, RFL Alternators Pty Ltd is a world class manufacturer of high quality permanent magnet alternators for the power generation industry. With over 25 years of investment into research and development, RFL prides itself in continuing to develop new and efficient cutting-edge technologies and products which are at industry’s forefront, and manufactures alternators to the highest quality standards.
See more about our 6kVA Used Kubota Low Boy – Available now!
Source: https://www.macfarlanegenerators.com.au/blog/rfl-alternators-vs-sawafuji-alternators
RFL Alternators has developed a new wave of permanent magnet alternators using its novel magnetic flux technology that enables generator manufacturers to produce multivoltage gensets.
The novel magnetic technology also enables RFL Alternators’ units to be smaller, more durable, lighter and more energy efficient.
As a result, magnetic flux technology is ideal for portable mobile generator applications where portability, robustness and ease of use can make all the difference on a job site.
RFL offers a range of standard engine couplings that can be interfaced with a vast variety of engine models, types and speeds. This allows genset manufacturers to easily incorporate the alternators in their existing designs to realise benefits such as a smaller footprint, efficiencies up to 95%, easier motor stating, and total harmonic distortion down to less than 3%.
Husqvarna is one company already taking advantage of the new RFL design to allow its genset users to run single- and three-phase machinery from the same generator.
Makinex Construction Products has also used the RFL alternator in a generator capable of providing separate, electrically isolated voltages from a single unit.
RFL Alternators
02 9584 9970
www.rflalternators.com
Source: https://www.industryupdate.com.au/article/permanent-magnet-alternators-improve-genset-performance
The Portable 23kw 480V Generator is the newest addition to Makinex’s portable generator range. The generator’s unique alternator
configuration powers 120V and 480V simultaneously with no loss on either circuit. It is able to take 23kw from the three phase and 3kW from the single phase at the same time without affecting each other, with no power or frequency dips. The power is generated in a single alternator, but from separate auxiliary copper windings.
The generator is only 36 by 25 by 36 inches, making it the smallest dual phase 23kw 480V generator on the market.
Based in Sydney Australia, RFL Alternators Pty Ltd is a world class manufacturer of high quality permanent magnet alternators for the power generation industry. With over 25 years of investment into research and development, RFL prides itself in continuing to develop new and efficient cutting-edge technologies and products which are at industry’s forefront, and manufactures alternators to the highest of quality standards.
The objective of the blog is to give a deep understanding of Permanent Magnets, the modern industrial applications, demand and supply drivers.
Why know about Permanent Magnets
Permanent magnets are a vital part of modern life. They are found in or used to produce almost every modern convenience today, from speakers in mobile phones to the electric motors in hybrid cars; air conditioners and washing machines. Permanent magnets are used increasingly in technological applications, including traveling wave tubes, Hall Effect sensors, high temperature-resistant permanent magnets, thin-film coating equipment and flywheel storage systems.
Magnets – Permanent vs Temporary
Centuries ago, it was discovered that certain types of mineral rock possessed unusual properties of attraction to the metal iron. One particular mineral, called lodestone, or magnetite, is found mentioned in very old historical records (about 2500 years ago in Europe, and much earlier in the Far East) as a subject of curiosity. Later, it was employed in the aid of navigation, as it was found that a piece of this unusual rock would tend to orient itself in a north-south direction if left free to rotate (suspended on a string or on a float in water). A scientific study undertaken revealed that steel could be similarly “charged” with this unusual property after being rubbed against one of the “poles” of a piece of lodestone or temporary magnets.
Unlike electric charges (such as those observed when amber is rubbed against cloth), magnetic objects possessed two poles of opposite effect, denoted “north” and “south” after their self-orientation to the earth. It was impossible to isolate one of these poles by itself by cutting a piece of lodestone in half: each resulting piece possessed its own pair of poles.
Induction – Permanent Magnets Vs Electromagnets
A Permanent Magnet is made from a hard-magnetic material whose atoms have been permanently aligned during manufacturing. Permanent Magnets maintain this intrinsic magnetism over long periods of time.
An electromagnet is created by running a current through conductive wire that is tightly wound around a piece of soft magnetic material. The magnetic field stops when the electrical current ceases.
The basic operation of generators and motors relies on Faradays law of induction which predicts how a magnetic field will interact with an electric circuit to produce an electromotive force (EMF). A magnetic field is thus required to create electrical power in generator mode, or to create work in motor mode. These magnetic fields can be generated by either permanent magnets (PMs) or electromagnets. This blog will give a brief description on the differences between the two along with their associated advantages and disadvantages.
Magnetic Strength
The main benefit to using an electromagnetic is in the ability to control the resultant magnetic flux. This can be done by either turning the magnet on and off or by adjusting the current through the coil. This is an ideal characteristic for maintaining voltage regulation where the electromagnet operates as a generator. Electromagnets also possess the ability to create greater pull strength than permanent magnets.
As the name suggests Permanent Magnets maintain a permanent magnetic flux, hence limiting the flexibility associated with voltage control whilst operating as a generator. A key benefit of PMs is that they are capable of operating at a peak efficiency at all times.
Loss of Magnetism – A myth or fact!
Deep Dive into ways Permanent Magnets are mounted in Alternators and Motors – Understanding limitations of Surface mount PMs and how our patented Imbedded design has proven success
It is a common notion that permanent magnets lose their magnetism over a period of time. Although this is not at all true, there are conditions which may result in loss of magnetic properties.
For this we need to understand the difference between Surface Mount Magnets and RFL’s patented Imbedded Design and the relation of magnetism to PM temperature rating
We conducted a lot of temperature tests on the RFL alternators and other alternators / motors using surface mounted design. The case temperature and the rotor temperature stabilize after about 1 Hour running at full load. The PM temperature range is about 120 degC and although our alternators are air-cooled, we have never registered temperatures beyond 100 degC.
However, this may not be the case with alternator design where the Permanent Magnets are surface mounted. At this temperature, the magnets can be susceptible to short circuit load conditions damaging the magnets. We have tested many other pm designs and have found these units to be prone to magnet damage under short circuit load conditions.
High loads or motor starting can demagnetize the magnets in surface mount pm designs even at magnet temperatures well below the PM temperature rating. For example – DOL motor starting of AC motors. This is effectively a short circuit and as such many PM designs have problems starting AC motors. The RFL design does not have these problems. The motor starting ability is equivalent to a standard induction alternator with a pm exciter. The patented positioning in the RFL Alternators means that magnets are protected from flux loss under short circuit loads, even at elevated temperatures. This is a key advantage of RFL design.
We have also tested the RFL design with magnet temperatures close to 100 degC, at short circuit conditions many times and no flux loss has been registered. Due to the patented imbedded design, The RFL unit does not have this problem. In fact, we have had zero rotor failures to date.
Our largest four pole customers are reefer industry generator set manufacturers. We have produced over 2000 units for these clients. This application requires constant starting of refrigeration compressors at high temperatures and for long periods of constant operation (weeks without stopping). RFL Permanent Magnet Alternators have had not a single failure in this application.
Size
There are a number of major families of permanent magnets available for designers, ranging from ferrite, known for its low cost and low energy, to rare earth materials, which are more expensive and offer higher performance. Designers need to analyse magnetising field strength and magnetic output of magnetic materials prior to deciding on the appropriate magnet.
The design of Permanent Magnets is extremely flexible; they can be built longer and flatter, providing a large area of magnetic coverage. Due to the flexibility in Permanent Magnet sizing, the generators construction becomes more flexible. For example, a higher pole count can be achieved due to Permanent Magnets requiring a smaller