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All the news from the TMC world

Traction transformers are essential for electric railway systems, including 

high-speed trains, conventional trains, light rails, metros, and trams

, they help convert grid voltage into the voltage that trains need to run while minimizing wastage during transmission.

Electric railway systems usually feature traction substations, and transformers in substations must convert 

 to a form suitable for powering a rail system through overhead lines or third rails. The best transformers for this industry must 

 during operation while maintaining high performance and safety.

The design of traction transformers must consider such needs while ensuring minimal maintenance requirements and high reliability, and that is where dry-type transformers come in!

Read on to know why a dry-type transformer is well suited for railways applications.

Benefits of Dry-Type Transformers for Railway Traction

Dry-type transformers have various features that make them excellent for railway traction applications, including:

Dry-type transformers are designed according to industry standards to ensure the safety of train operators, passengers, and maintenance personnel. They are completely 

, so you do not have to worry about fires igniting in case of accidents or faults. 

Both mechanical and electrical parts are short-circuit tested and validated through rigorous criteria like finite element analysis (FEA)

 regardless of environment or condition. They feature different types of protection to ensure they remain functional and last for a long time, even in 

 and applications. The last thing a railway system needs is stoppages or halts due to breakdowns, but you can rest easy when you install dry-type transformers as traction transformers outdoors, in pressurized substations or tunnels.

A dry-type traction transformer can make the railway system 

. They are highly efficient to ensure great energy savings corresponding to reduced carbon emissions. They also feature solutions like 

 instead of oil solutions for further reductions in emissions and losses.

, which can help reduce downtime and the total cost of operating train systems. They are suitably protected from atmospheric agents and harsh conditions, so you can be safe and secure about maintenance stoppages for trains or transformers in substations situated in very low temperatures or highly polluted areas.

TMC Transformers USA Inc.: Leaders in Dry Type Transformers for Railway Traction

TMC supplies a broad array of dry type transformers for 

fixed rail traction electrical substations

medium voltage distribution transformers for auxiliary services

It has over 30 years of experience in manufacturing and designing dry-type transformers according to all international standards like 

high-quality, safe, reliable, eco-friendly, and low-maintenance

 dry type transformers for railway traction applications, compliant with applicable standards and designed according to your requirements and technical specifications.

Traction Transformers to boost Railway Performance 

Renewable energy sources for power generation can pave the way for a 

Sustainability, environmental protection, emission-free processes are critical decision factors in power generation today, and sustainable transformers can play a crucial role in achieving them.

Dry Type Transformers from TMC Transformers

TMC Transformers supports sustainable power generation from renewable energy by providing a broad portfolio of 

. Transformers are vital in power generation and are widely used in 

TMC Transformers offers sustainable transformers that allow efficient, reliable, continuous, and emission-free operations.

Dry type transformers are sustainable transformers that use 

 medium instead of relying on oil or other liquids in the cooling system. They use natural or forced air ventilation for cooling, making them more beneficial than liquid-filled units.

How Do Dry Type Transformers Ensure Sustainability

Energy must be efficiently collected and distributed to be sustainable, and dry-type transformers guarantee high reliability regardless of environment or condition, with the 

. Transformers operate by the principle of 

 in power generation. TMC Transformers features an in-house 

 (FEA) facility that allows studying complex electromagnetic circuits, thermal and structural performance to ensure the finished product meets the required levels of reliability and efficiency.

 in operations or manufacture, making them a far 

 than oil transformers. They also feature increased efficiency, which translates to high energy savings and reduced emissions. Dry-type transformers feature 

 and use solutions like natural air cooling instead of oil solutions, guaranteeing low emissions and losses.

TMC sustainable transformers are protected from harsh conditions and atmospheric agents 

 and flexible for use in extreme environments.

We’re referring to highly polluted areas and high climate class for transport, storage, and operation at very low temperatures (down to -50° for operation and -60° for storage and transport), and as well as resistance to fire hazards.

outdoor auxiliary sustainable transformers

, TMC Transformers has you covered! It features a team with over 30 years of experience designing and manufacturing dry-type transformers that meet applicable standards, technical specifications and customer needs. Check them out today to discover how sustainable transformers can help you achieve sustainable power generation.

Powergen Renewable Energy Sustainability

 with a longstanding commitment to designing and building quality and correct transformers for the mining industry. Thanks to over thirty years of transformer experience, TMC transformers are designed in compliance with applicable standards, technical specifications and customer requirements.

The Mining Transformers Industry & The Relevancy of TMC Transformers at a Glance

Highly reliable mining transformers are essential for the mining industry to guarantee production and prevent profit losses. The transformers mining industry needs mechanically and electronically robust equipment to withstand 

 like high and low temperatures and dust. The last thing you want is outages or breakdowns during extraction or processing, and with TMC mining transformers, you can rest easy whether you’re mining in the middle of the desert or in snowy and cold areas.

Features of TMC Mining Transformers – Compliance & Innovation Are at Our Core!

An Impressive Foray of Full Certifications

TMC transformers are designed according to all international transformers mining industry standards, including 

. Both mechanical and electrical parts are short-circuit tested and validated through rigorous criteria like finite element analysis (

 mining transformers. Dry type transformers are a green technology that is recyclable and highly efficient to ensure high energy savings corresponding to 

. Eco-friendly solutions like heat exchanger solutions and natural air cooling instead of oil solutions provide low emissions and losses.

TMC mining transformers can reach different levels of protection, including totally enclosed solutions from IP00 to IP68, ensuring protection from total dust ingress. You’re guaranteed high reliability in all kinds of challenging environments and applications. Thanks to different types of protection, you can install the mining transformers directly outdoors, in mine tunnels or pressurized substations.

TMC mining transformers are suitably protected from harsh conditions and atmospheric agents, making them maintenance-free and flexible for use in extreme environments. You don’t have to worry about maintenance stoppages during mining operations, whether in highly polluted areas or very low temperatures.

 from TMC are ideal for all kinds of applications worldwide, whether you’re mining metallic ores, diamonds, coal or oil.

Check out the TMC extensive portfolio for 

 and maintenance-free transformers that adhere to standards in the transformers mining industry that can be customized to your needs and requirements.

Transformers perfectly suited for Mining extreme environmental conditions

 the Andrea Ghidini's interview about how TMC is facing the transformer market evolution and its challenges during the last years. 📈

What’s the situation that characterises the transformers market after the pandemic?

After the end of the Covid restriction, we started to see two main factors that have characterized the market. The first was the increase in volume requested and the second was related to the increase of the cost of raw materials, together with a longer lead time. Initially we considered this to be a reaction to the reduction in global activity due to Covid, but we continued to see a significant upturn in orders and growth continued over many months that followed.

How is TMC positioned? Where is TMC investing?

It all started five years ago, when TMC invested heavily in the dry transformer business. We saw continuous growth as a result, even during Covid time we managed to retain all employees, which helped give TMC the platform to continue the journey and grow the business. In order to maintain sustainable growth, we have always tried to anticipate the market, although what happened after Covid was not easy to predict. Our investment continued with the purchase of new winding machines, new facilities, special tools for production and the latest software to improve design and production processes. In addition to this, TMC have and continue to invest heavily in bringing new people on board across all functions of the business. This will enable us to increase capacity in the medium and long term. But we didn’t stop there! We’ve expanded our global presence by opening new facilities in both the USA & Israel.

What’s the most complex challenge you’re facing? How will you overcome it?

The most challenging aspect, first and foremost, is to 

. More recently, the signs are that the availability of material has increased, although lead times remain long. Over that past few months, we have learnt how to manage our supply chain more effectively, thus improving the management of longer lead time projects, mitigating the risk linked to cost variations. We also encountered challenges relating to the availability of skilled people that we need to continue our growth plans. In many ways we are fortunate to be based in a region where we can find experienced people, on the other hand we have worked hard in to retain our employees by investing heavily in Human Resources.

Which sector is seeing the most growth, both in Europe & the USA?

Overall, the economy has a positive trend, with most applications requiring dry type transformers demanding more investments. The need of a green transition is creating more & more new opportunities for 

hat are linked to new technologies such as

 Hydrogen production, electrical chargers and battery storage

. Global digitalization is creating a need for new 

 is driving investment in renewable energy generation, together with new and more-efficient distribution infrastructures.

Following a period of considerable investment in R&D, we are now delivering products for traditional renewables, such as wind and solar. TMC have also developed innovative solutions that support hydrogen production, improving our products continuously in order to position ourselves as a reliable supplier to our customers that supports demanding applications where dry transformers play a fundamental role. These technological advances mean that TMC’s dry type transformer offer is a very credible alternative to traditional, liquid-filled assets.

When it comes to our internal approach to 

, we’ve invested in processes that enable us to 

 on the roof of our main production site, which has a capacity to generate more than 1 GWh/year. Other initiatives include the 

 that we produce in many operations and the installation of more efficient tools to reduce consumption. 

TMC’s success in the market to-date has far exceeded our expectations. The positive return that we’ve seen, both in 

, is a direct result of and driven by the competence of our people and the quality of TMC products. The original plan was to enter the market and try to meet the needs of our customers, providing 

competence, flexibility, reactivity and proximity to the market

. To implement this, we managed to hire a team of people with many years of industry experience in all strategic functions, including Sales, Engineering, Production and Quality. We then reinforced other key functions, such as marketing and IT, with highly skilled people that complemented and added value to the team. So, 

the human capital is the for sure the main driving factor of our growth.

Our achievements to date have put TMC in a very strong position, which will help us realize our future plans. Our growth is not only linked to market expansion, but also to high penetration of the customer base. We’ve created a strong network of agents and distributors across the globe and the return we are having is based on solid relationships with our customers. We are positioning our products and overall offering into new applications and solutions, differentiating in numerous areas and, therefore, operating independently from the economic cycle. TMC work tirelessly to mitigate risk and take advantage of these positive trends. We will continue to develop our global footprint, expanding into developing regions.

An expert Q&A with the TMC Group Marketing & Sales Manager 

Leader in the manufacture of medium and low voltage dry-type transformers and reactors, TMC Transformers is a dynamic European company with a global reach. The company designs and produces a wide range of innovative solutions, using the latest advances in cast resin and VPI technologies to optimise performance and cater all needs.

All products and services are available in standard ranges and tailor-made versions, perfect for both 

. These two aspects together allow TMC to offer customers around the world the best service they possibly need.

Among the different possibilities of applications such as industry, building and infrastructures, traction substations, marine and offshore, oil and gas, renewable energy, battery storage and mining, the company is 

highly specialised on dry-type transformers for data centers

Data Centers may vary according to their use and application, but they surely represent an essential asset for businesses. Especially in today’s world, where millions of devices are connected to the internet worldwide and information runs at lightning speed. Massive flows of data are stored and controlled daily and we will keep storing more and more data in the future. 

Within this scenario, TMC strives for greater efficiency and offers reliable solutions that can provide opportunities for mutual business growth and expansion.

‘In today’s world, where information systems represent an essential tool for any business, data centers have become the key to phenomenal growth.’

TMC Transformers offers all its knowledge, expertise, and experienced engineers to help data centers operators work more efficiently. Whatever need you may have, it can be overcome with our extensive range of MV and LV dry-type transformers for data centers use, complying with technical specifications and applicable standards.

Data Centers applications for different needs

Data centers are highly demanding applications that require specific characteristics. There are indeed many crucial factors to consider in order to cope with the challenges of such a demanding power system. 

Load characteristics (non-linear loads with high harmonic content), transient voltages (frequent switching), lack of space, noise control and management of leakage currents are just some essential aspects to take into account.

What TMC ensures is increased safety, functionality and reliability with different solutions that can be customised to meet customer demands. 

highly-robust, environmentally sustainable

 (the transformer guarantees performance to -60°C storage and -50°C ambient temperatures) 

 (the emission of toxic substances and opaque smokes shall be minimised).

Advanced noise/vibration and surge suppression.

TMC Technology for data centers: the key to phenomenal growth

 is extremely broad and diverse, while focusing mainly on specific and highly specialized applications that demand 

While the design and manufacture of standard distribution transformers is straightforward and often perceived as a commodity in the marketplace, a totally different approach must be taken when specifying transformers for critical applications, particularly harmonic loads (power conversion, rectifier duty, excitation applications, etc.).

These demanding applications, often in safety-critical and harsh environments, require 

transformers that are carefully and competently engineered

. The actual thermal overloads must be considered to allow for optimum performance when connected to loads that are subjected to harmonic distortion or with continuous and or temporary overloads.

 by trusted partners with a high degree of competence and experience in this field.

using highly advanced software to accurately process and simulate physical effects within the equipment, providing customers with a fully-optimized and robust solution that eliminates premature transformer failures.

From small power/LV up to power ratings of 

Our innovation, experience and advanced technology allow us to offer the following benefits:

tailored to suit specific customer requirements

The combination of FEA simulations and our advanced skills and experience results in a fully optimized solution that 

prevents premature degradation within the insulation system

under arduous operating and environmental conditions

 while operating in systems with high harmonic content, managing overheating problems or insulation degradation.

Operating in a competitive environment, TMC Transformers aims to stand out from the others, approaching each proposal and design with 

proactive engineering research and advanced technology

, allowing us to meet customer demands for innovation, reliability, and product safety.

steel production, paper mills, cement plants, water treatment pumping stations.

track side supply main line, metros, trams.

Dry Type Multipulse Transformers – VSD & Rectifier Loads

to meet standard requirements yet also match specific requests, 

Founded in 2017 following the acquisition of preexisting know-how, TMC gained in prominence on the market in just a few years due to its expertise and ability to meet customer needs, especially in very specific industries such as

Our solid team of about 250 experts are committed to innovation and quality (most are employed at our Italian headquarters in Busto Arsizio).

when answering customer requests are two unique features of this young company, which is appreciated for expertise that makes it competitive with major established companies. The numbers are also proof of our customer satisfaction: since 2017, turnover has grown exponentially, even during the pandemic.

Today’s transformer market is focused on two primary requests: 

“These two characteristics cannot be overlooked,” explains 

, an engineer in the TMC technical department and an expert since 2004 in multiphysics simulations with finite elements.

“Then there are those industries with specific requests and needs that require specific raw materials or transformers optimized for custom parameters such as circuits and geometry.”

This is the difference of TMC: offering highly customized applications. “We develop nonstandard solutions with high levels of personalization. For example, transformers with one primary winding and 27 secondaries, solutions with a 52-kV voltage class and highly strict phase shift angles. Alternatively, for new applications, we offer clients innovative solutions in terms of materials and structures.”

Simulations, an essential tool for designing quality

Given the above, it is clear why simulations are an essential element in transformer design. The more complex an object is or the more it deviates from standard construction, the more important it is to simulate its

according to the required conditions. Since transformers are subject to physics in the real world, 

multiphysics simulations are perfect for approaching the actual operating conditions.

In particular, which physical forces should be considered?

“Transformers are often perceived as machines in which the fundamental physics are electromagnetic. This is true, but transformers are extremely complex machines in which more interconnected physics operate,” Iovieno explains.

For example, electricity moving through the windings causes the machine to heat up, and it is essential for a good design that the 

across the various parts of the transformer (i.e. core and windings). It is also necessary to know how these parts react to temperature increases.


Although transformers do not contain moving parts, mechanical and structural analysis is necessary to ensure the

of the windings in case of short circuits.

Closer to reality with finite element multiphysics analysis

The most advanced multiphysics simulations

As Iovieno explains, the simulation creates a “mesh” for each component and geometry, discretizing the component in question.

“In this step, under precise instructions from the operator, the software divides the component into many subsets and the differential equations that describe the physics in question are applied to each. In the case of electromagnetism, for example, Maxwell’s equations, which constitute the fundamental rules that govern electromagnetic interactions, are applied to each discrete element. Finite element simulations provide an extremely precise analysis of the component and define the gradients of each type of physics considered.”


For transformers, the most common properties investigated using multiphysics analysis are

The added value of multiphysics simulations

In developing TMC products, multiphysics analysis is involved right from the offer, which determines the technical specifications requested by the customer. Therefore, right at the beginning, it is possible to understand if the suggested geometries are the most suitable and they need to be optimized.

“Multiphysics analysis is very useful if there is any need to exclude design paths that are not practicable in view of the simulation results.” Customers also appreciate multiphysics simulations.

“We use the example of a transformer that must guarantee short-circuit withstand. To be sure that the machine matches the requirements, the customer might ask for a test that would be commissioned to certified third-party laboratories, but this also implies a further significant cost. With multiphysics analysis run on finite elements, we always provide the customer with a very detailed report of the analysis, which provides evidence and guarantees that the machine has been designed to answer the specific request for short-circuit withstand, often making the test irrelevant.”

to both the company, which offers products developed on a sound scientific basis, and the customer, who is guaranteed that the TMC product meets its requirements, is made with cutting-edge tools, and is the result of top-quality analysis.

What if new parameters that are not yet covered by the analysis software need to be analyzed?

“The companies developing multiphysics analysis software are very attentive to customer requests. Whenever we have to consider new parameters that have not yet been implemented in the software, the developer, upon request, quickly integrates the additional functions. Simulation software programs develop based on user needs. Besides this, we have also witnessed many improvements concerning the use of storage and computation times over the years. For example, the same analysis that required many hours of machine computation time just a few years ago can be solved in a few tens of minutes today. Advances in software have been truly decisive.”

Although they are powerful tools in and of themselves, multiphysics simulations integrate

. Moreover, user experience plays a key role when performing the analysis.

“For instance, choosing the best discretization of the component, namely the one permitting the best visualization of the force gradients acting on it, is also the outcome of previous experiences that have taught us where such forces are exerted, and which points should be considered in further detail. Since there is no such thing as standardization, every company builds its own know-how and skills based on the experiences and the analysis made when developing the various products. Such know-how is the real business tool used to make further developments.”

One of the most recent cases for which TMC conducted complex multiphysics analysis of the finite elements was a railroad substation transformer with two secondary windings operating in connection with a 12-impulse frequency converter which had provide a specific short-circuit withstand.

“In this case, finite element analysis highlighted the current thickening at either end of the conductors at various operating frequencies, a detail that led to optimization of the conductors themselves. Such analysis highlights the density of losses which lead to heating in various parts of the transformer and calculates the temperatures via thermal simulation. For the same machine, mechanical simulations were also conducted to guarantee short-circuit withstand. A detailed technical report of all the above analysis was prepared and provided to the client as further guarantee of product quality.”

At TMC, multiphysics analysis of finite elements has been applied since day one.  From the beginning, TMC has used the software 

®, which is suitable for modern technological challenges and is based on the most advanced numerical methods.

TMC Transformers closer to the real world with multiphysics simulations

 for any application around the world, including 

industry, building and infrastructure, traction substations, marine and offshore, oil and gas, renewable energy, battery storage, mining, and data centers

TMC has a large clientele, which has led to the development of various 

 for dry transformers. We have developed transformers for 

 in creative projects capable of reaching operating temperatures of -50°C and incorporating different cooling systems (natural air, forced with exchangers, air-water or air-air).

. Dry transformers continue to evolve with the development of new materials, resins, types of insulation, and cooling systems.

Our team of technical experts—electrical and mechanical engineers—make new developments and solutions possible for our customers.

With finite element analysis, we ensure the highest quality products to withstand short-circuit mechanical stresses and maintain operational reliability.

The IEEE T&D Exhibition in New Orleans –

 – is an opportunity for professionals in the energy sector to interact and explore the ideas driving change in the industry. At the trade show, TMC will be promoting solutions and equipment in electrical transmission and distribution.

dry type submersible network transformers

 suitable for use in underground vaults under sidewalks in densely populated cities. These vaults may flood in the event of heavy rain, so the transformers are located inside completely 

. Dry type submersible network transformers do not contain oil, preventing the risk of fire in cities. The tanks are fully welded and supplied with an external tap changer to facilitate voltage regulation depending on network needs. The footprint is similar to liquid-filled units, so they can be easily interchanged.

Grid transformers are ideal for supplying and distributing energy in infrastructure projects designed for 

. The insulation system is flame retardant and self-extinguishing, making them a safe and reliable choice compared to liquid fluid-filled transformers.

At the fair, TMC plans to promote the network transformers 

 has developed, interact with customers, share experiences, and advise customers on TMC’s full range of solutions and products related to dry transformers.

Network Transformers On Stage

Reducing CO2 emissions is a mission for all of us, both in private life and in industrial applications.

Different key solutions exist for reaching this ambitious target in terms of power generation.

All current renewable solutions are based on water, solar, and wind.

Renewable applications and installations require extreme flexibility and high-performance products to achieve the ambitious targets of reliability and real benefits, in terms of both ecological impact (important reduction of losses) and plant efficiency.

, later the official EN50588-1, fixed the basic milestones driving the performance of distribution transformers in 

. Due to this, the responsibility shifted to manufacturers to develop technology with the best performance to meet both ECODESIGN regulation standards and the expected payback in terms of cost of ownership.

Total savings is, in fact, the real commitment of TMC Transformers, which engineers and designs all transformers by applying every possible 

Our dedicated R&D department simulates each application using 

. This structured approach allows TMC Transformers to find the best and most reliable 

, from common distribution units up to the most challenging applications, also achieving excellence in the installations in nuclear power plants.

The risk of nuclear struggle is more than topical. It is easy to imagine, even in normal situations, how critical the perfect production of feeder units to for nuclear reactors is.

Strong, high-performance units are required and must be able to operate under 

 while reliably operating with extreme, sudden overload cycles to prevent dramatic failure. TMC Transformers has broad experience in these applications, expanded upon through repeated supplies for nuclear power plants.

All the news from the TMC world

Traction Transformers to boost Railway Performance

Powergen Renewable Energy Sustainability

Transformers perfectly suited for Mining extreme environmental conditions

An expert Q&A with the TMC Group Marketing & Sales Manager

TMC Technology for data centers: the key to phenomenal growth

Dry Type Multipulse Transformers – VSD & Rectifier Loads

TMC Transformers closer to the real world with multiphysics simulations

Network Transformers On Stage

Renewable and nuclear energy: the frontiers of co2 emission reductions

Marine & Offshore sector: a complex and sustainable world of transformers

Aluminium transformers VS copper transformers

The future of transformers' world