MITSUBISHI ELECTRIC Changes for the Better
Minimum efficiency levels for electric motors and frequency converters for new systems

Industrial drive technology is under increasing pressure to become more energy-efficient and sustainable. The energy consumption of electric motors accounts for the majority of electricity costs in many companies - an area that offers enormous potential for savings.

At the same time, legal requirements such as the EU Ecodesign Directive are increasing the pressure on companies to act. If you want to remain competitive, you need innovative solutions that fulfil both technical requirements and ecological standards.

The synchronous reluctance motor offers an intelligent answer to these challenges. It does not require permanent magnets and yet achieves high performance with excellent efficiency.

In combination with the frequency inverters from Mitsubishi Electric, the highest efficiency class IE5 can already be realised today. This provides a sustainable, economical and future-proof drive technology that relieves companies in the long term and prepares them for future requirements.

Classification of motor efficiency - Intelligent motor control

With the Framework Directive 2009/125/EC and Regulation (EU) 2019/1781, the EU has introduced binding efficiency requirements for electric motors and frequency inverters. These requirements define efficiency classes from IE1 to IE5 and ensure that only energy-efficient systems may be placed on the market.

An extension of the Ecodesign Directive is already planned for 2027. This will not only affect the pure efficiency of motors, but will also increasingly focus on material efficiency, resource conservation and transparency in the supply chain. This will force companies to use technologies that also fulfil future requirements at an early stage.

Synchronous reluctance motors in conjunction with frequency inverters
from Mitsubishi Electric already fulfil the stricter requirements today. Users are therefore playing it safe and investing in a technology that is here to stay.

Ready for IE5 today with synchronous reluctance technology

The combination of synchronous reluctance motor and intelligent motor control via a frequency inverter makes it possible to achieve the highest efficiency class IE5 today. This puts companies a decisive step ahead of the development of regulatory requirements.

It is remarkable that this can be achieved without the use of magnets or rare earths. These materials are not only expensive, but also have a high environmental impact in terms of mining and processing.

The technology is particularly suitable for new projects or replacement investments. Companies do not have to plan for retrofitting, even if standards are tightened further in the future. The significantly lower energy consumption also ensures rapid amortisation of the investment. Anyone who opts for the synchronous reluctance motor today is securing themselves against future EU requirements in the long term and at the same time gaining a competitive advantage.

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A winning team - frequency inverters and synchronous reluctance motors

The reluctance motor technology is particularly efficient in combination with modern frequency inverters. The FR-F800 and FR-A800 series from Mitsubishi Electric are specially designed to optimally utilise the advantages of reluctance control.

The systems can also be used regardless of the manufacturer. This means that they can be combined with many motors from other manufacturers. This gives companies maximum flexibility in their investment decisions.

The full potential is particularly evident in applications with variable loads, such as pumps or fans: energy savings of up to 60 % can be achieved through optimised torque control and efficient adaptation in partial load operation. This makes the motor and inverter a real winning team that harmonises cost-effectiveness and sustainability.

What is a synchronous reluctance motor?

The synchronous reluctance motor is an electric motor that requires neither permanent magnets nor short-circuit bars in the rotor. Its torque is generated by differences in magnetic resistance (reluctance), which distinguishes it from classic motors.

As there are no electrical losses in the rotor, it works particularly efficiently. At the same time, less heat is generated, which not only improves efficiency but also extends the service life of the motor.

Synchronous reluctance motors can achieve high efficiency classes such as IE4 or IE5 and are therefore ideally suited for future-orientated drive concepts. They are preferably used in applications such as pumps, fans and compressors - wherever a variable operating point offers high savings potential.
*** Translated with www.DeepL.com/Translator (free version) ***


Sustainable motor technology without magnets - efficient & future-proof

A key advantage of reluctance technology is its sustainability. The synchronous reluctance motor requires neither permanent magnets nor rare earths. Instead, copper and iron are used - materials that are more readily available and cause less environmental pollution.

This reduces dependence on critical raw materials, which are often extracted under problematic conditions. The production and subsequent disposal of the motor are also more environmentally friendly than with magnet-based solutions.

In conjunction with a frequency inverter from Mitsubishi Electric, the performance of the motor can be optimised even further. The system achieves excellent efficiency, particularly in part-load operation, which makes the technology ideal for applications with fluctuating power requirements. The synchronous reluctance motor thus combines modern drive technology with ecological responsibility.

What are the advantages of a synchronous reluctance motor?

The synchronous reluctance motor impresses with a whole range of advantages that make it an attractive alternative to conventional drives.

High efficiency

As there are no electrical losses in the rotor, less heat is generated. This increases efficiency and ensures more efficient operation - even with long operating times.

Cost efficiency

Dispensing with expensive permanent magnets reduces manufacturing costs and makes the technology particularly economical. Companies benefit from an optimum ratio between performance and investment.

Environmental friendliness

By dispensing with rare earths, the motor makes an important contribution to greater sustainability. Production and subsequent disposal also conserve resources.

Low maintenance effort

The simple design without brushes or complex rotor windings minimises maintenance requirements and increases availability. This reduces operating costs and increases reliability.

Better speed control behaviour

Thanks to synchronised operation, speeds and positions can be precisely controlled. Modern control technologies ensure exact control and enable flexible adaptation to different operating points.

FR-F800 and FR-A800 series - your team partners for synchronous reluctance motors

The FR-F800 and FR-A800 frequency inverter series from Mitsubishi Electric are the ideal partners for synchronous reluctance motors. They can be used regardless of manufacturer and offer maximum flexibility in the selection of motors.

FR-F800: Efficiency and reliability for pump and fan applications

The FR-F800 is available in the power ranges 0.75 to 55 kW and 0.75 to 630 kW. It was specially developed for pumps, fans and applications in the heating, air conditioning and ventilation (HVAC) sector.

It achieves high energy efficiency, particularly in low-load operation. Energy savings of up to 60 % are possible. The patented OEC technology optimises the magnetic flux and enables additional savings.

The FR-F800 also impresses with its versatile network capability. The FR-F800E variant even offers Ethernet on board, which makes integration into industrial systems particularly easy.

FR-A800: Dynamics and precision for top performance

The FR-A800 covers a power range from 0.4 to 500 kW and is equipped with the latest control technologies. Functions such as Real Sensorless Vector Control and online auto-tuning ensure optimum torque and speed control.

Its high level of flexibility is reflected in the numerous interfaces and communication options. Digital inputs and outputs as well as integrated PLC functionality also allow the inverter to be used for additional control tasks.

The FR-A800E is also available as a variant with Ethernet on board, which makes it even easier to connect to networks.

FAQ

What is a synchronous reluctance motor?

An electric motor that works without permanent magnets. It generates its torque through magnetic reluctance and impresses with its high efficiency and low heat generation.

What are the advantages of a reluctance motor?

It is sustainable thanks to the absence of rare earths, offers high efficiency levels even in partial load operation and is characterised by a simple, low-maintenance design.

What does IE5 mean and why is it important?

IE5 is currently the highest efficiency class for electric motors. If you opt for IE5 today, you will already fulfil future requirements and achieve long-term energy and cost savings.

Do I need a special frequency inverter?

Yes, with the FR-F800 and FR-A800 series from Mitsubishi Electric, frequency inverters are available that are optimised for synchronous reluctance motors and can be used regardless of manufacturer.

For which applications is the motor particularly suitable?

It is preferably used in fans, pumps, compressors and HVAC systems - wherever variable speeds are required and there is great potential for energy savings.

Would you like to know how much energy you can save?

We will be happy to answer your questions and estimate the energy savings for your application. Simply fill in the form below. We will get back to you as soon as possible!

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