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TMC Transformers has assembled a carefully selected group of engineers and technicians with vast experience in the design and manufacture of distribution transformers and special transformers, two different souls combined in a single body, offering customers the most suitable technology and service.

TMC focuses on dry type transformers and reactors for all applications worldwide. In South America in particular, TMC designs transformers for the mining sector, respecting the technical specifications and applicable standards.

Our dry-type transformers are considered a green technology that is fully environmentally compliant, non-polluting, and recyclable, which can be used in outdoor applications where oil-based solutions are typically employed.

The mining sector requires highly reliable equipment to guarantee production, avoiding stoppages and profit losses. In addition, it the equipment must be maintenance-free and flexible in its use, as well as capable of withstanding extreme environmental conditions (dust, high and low temperatures, etc.).

These extreme environmental conditions in turn demand an electrically and mechanically robust equipment which is adequately protected against atmospheric agents.

TMC supplies equipment for the mining sector for various applications— VFD, distribution, and ventilation — with different types of protection cabinets for installation directly outdoors, in mining tunnels, or in pressurized electrical rooms. By installing our transformers outside, considerable energy savings can be obtained, avoiding to need air condition electrical rooms and thereby increasing the efficiency of the system.

TMC Transformers provides reliability and robustness for mining operations, reducing maintenance stoppages. With our vast experience in these applications, our engineering team is our key to being chosen in this sector and one of the main players in mining worldwide.

TMC supplies dry type transformers for the 

. This Chilean region is home to the largest underground copper mine in the world, with 3000 km of underground tunnels and a yearly production of more than 22 million tons of copper.

TMC Efficiency and Experience at the Service of mining

The global market for dry type transformers is extremely broad and diverse, while focusing mainly on specific and, highly specialized applications that demand reliable, safe, and efficient equipment.

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.

that are engineered, manufactured, and tested by trusted partners with a high degree of competence and experience in this field.

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

From small power/LV up to power ratings of 30 MVA, 52 kV system voltage.

6 to 54 pulse systems / Cast Resin or VPI / Aluminium or copper conductors.

A wide range of cooling options – AN, AF, AFAF, AFWF.

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

Flexible options that are 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.

Reaching the specified design lifetime under arduous operating and environmental conditions.

High performance 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.

Industry and mining: Steel production, paper mills, cement plants, water treatment pumping stations.

Traction: Track side supply main line, metros, trams.

Dry Type Multipulse Transformers – VSD & Rectifier Loads

to not only meet standard requirements, but also match specific requests, the right choice is

Founded in 2017 following an acquisition in which it acquired the pre-existing know-how, TMC in a few years TMC established itself on the market in just a few years due to its expertise and ability to meet customer needs, even in very specialized industries such as

Our team of approximately 250 specialists, experts committed to innovation and quality approximately 250 (the majority located in at our Italian headquarters in Busto Arsizio), makes the company solid.

in answering the client requests are two peculiar characteristics of this young company, which is appreciated for expertise that is in no way inferior to major established companies. Customer satisfaction is visible also visible in the numbers: since 2017, the turnover of TMC has grown exponentially, even during the pandemic.

Nowadays, the transformers market is focused on two main requests: 

These two characteristics cannot be overlooked

, 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 that are optimized based on tailored parameters such as circuits and geometry specific raw materials.

This is where TMC makes the difference, 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

Based on the above, the reason why simulations is are an essential element in transformer design is clear. The more complex an object becomes and/or deviates from a standard construction, the more important it is to design it while simulating its

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

multiphysics simulations is needed to get closer to reality.

In particular, which physical forces should be considered for transformers?

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

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

across the various parts of the transformer (i.e. core and windings) and how these parts react to increases in temperature.

Even though transformers do not have moving parts, mechanical and structural analysis is needed to ensure the

of the windings in case of short circuits.

Closer to reality with finite element multiphysics analysis

The most advanced level of multiphysics simulations 

As Iovieno explains, the simulation creates a "

" 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 investigated common aspects investigated using multiphysics analysis are, above all

The added value of multiphysics simulations

In the process of developing TMC products, the multiphysics analysis comes into play right from the offer, which is based on the technical specifications requested by the customer. It is therefore possible, even at the beginning, to understand if the suggested geometries are the most suitable and if optimization is necessary.

Multiphysics analysis is very useful if there is any need to exclude design paths that are not practicable in view of the simulation results.

" Multiphysics simulation is also particularly appreciated when it comes from the customers.

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 the 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 to the specific request of for short-circuit withstand, often making the test irrelevant.

Essentially, this type of analysis brings 

to both the company, which offers products developed on a sound scientific basis, and the customer, who has the guarantee that the product provided by TMC complies with its requests, is made with cutting-edge tools, and is the result of top-quality analysis.

What if there is a need to analyse new parameters that are not yet covered by the analysis software?

he 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 over the years, we have also witnessed many improvements concerning the use of storage and computation times over the years. For example, the same analysis that a few years ago required many hours of machine time computation time just a few years ago can be solved in a few tens of minutes today. Advances in software have been truly decisive.

Multiphysics simulations, despite being powerful tools in and of themselves, require the integration of

which are all different. Moreover, the user experience plays a fundamental role 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 and illustrative cases, for which TMC carried out complex multiphysics analysis of the finite elements, was a transformer for a railway substation 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 the temperatures 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 the "

." Since the beginning, TMC has used the software

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

TMC Transformers closer to the real world with multiphysics simulations

Due to ongoing efforts to reduce CO2 emissions, an increasing number of states and countries are turning to renewable energy sources. This makes the powergen industry one of the most strategic assets of our time for TMC investments.

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

In several markets, attention to product quality, along with low losses and high efficiency, implies high energy savings that correspond to CO2 reductions in line with the green transition currently taking place around the world.

TMC Transformers has broad experience in manufacturing dry type transformers for such applications. We’re talking about green technology that is fully environmentally compliant, that is non-polluting, and recyclable, which can be used in outdoor applications where oil-based solutions are typically employed.

To guarantee high reliability for its transformers, TMC products are certified with one of the highest ratings available on the market — E4 C5 F1 certification — achieved through a good protection of the transformer and a particular design.

This guarantees our products for use in challenging environments, thanks to its high environmental class for 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.

In fact, TMC has developed a range of highly robust and efficient dry-type, outdoor transformers, rigorously tested to offer high performance, safety, and durability in the harshest environmental conditions.

Reduced costs for civil works and fire protection systems

Compact footprint to replace liquid filled transformers

TMC strives daily to optimize production processes, reduce waste, and create products that have low emissions and a low overall impact on the environment. The continuous search for eco-friendly alternative materials and the use of renewable energy sources are just some of our process engineering goals. In fact, TMC has implemented a policy to protect and preserve the environment.

TMC has also launched a project to define the Life Cycle Assessment and Environmental Product Statement (EPD) certification for processors. This green passport will certify TMC’s commitment to the environment.

TMC and the world of renewable energy: new boundaries of sustainability

 for all applications worldwide, such as 

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

TMC has a large customer base, which has led to the development of all types of 

 in the world of dry transformers. This experience has enabled the development of creative projects adapted to customer needs, both in transformers for 

 that are able to reach 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 respect to new materials, resins, types of insulation, and cooling systems.

In fact, a team of technical experts — electrical and mechanical engineers — make new developments and solutions possible for our customers.

Tools and methods such as finite element analysis ensure the highest quality products capable of withstanding short-circuit mechanical stresses and maintaining operational reliability.

The Dry Type Submersible Network Transformers

 is suitable for application in underground vaults under sidewalks in densely populated cities. In case of heavy rain, these vaults may be flooded, so the transformers are located inside completely 

. Dry type submersible network transformers do not contain oil, preventing the risk of fire propagation in the cities. They consist of a fully welded tank and are supplied with an external tap changer that facilitates voltage regulation according to the network. The footprint is similar to liquid-filled units, so they are can be easily interchanged.

Network transformers are the ideal solution for supplying and distributing energy within infrastructure projects aimed at 

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

At the exhibition, TMC plans to promote the network transformers developed by the 

, 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.

 regulation EU548/14, later the official EN50588-1, fixed the basic milestones driving the performance of distribution transformers in savings and efficiency. Due to this, the responsibility shifted to manufacturers to develop technology with the best performance to meet both 

 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 technological innovation and improvement currently available. 

Our dedicated R&D department simulates each application using finite element analysis (FEA). This structured approach allows TMC Transformers to find the best and most reliable solution for any application situation, 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 huge electrical and mechanical stresses 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.

Electrical and mechanical stresses are withstood perfectly through the application of innovative concepts and the use of high quality standards, materials, and processes.

The latest step in this direction is the Advanced Resin Technology (H-ART180) applied by TMC Transformers. In particular, this technology allows transformers to excel where other products would fail or not perform as required and needed. Such insulation technology allows TMC Transformers units to be a real solution for the best performance in any application, giving every customer total peace of mind.

Our motto — Experience Makes a World of Difference — is our guideline for growth and development.

Renewable and nuclear energy: the frontiers of co2 emission reductions

Today, in the transformers market and especially in the marine & offshore applications, a 

 is gradually solidifying: the use of green technology with fully environmentally compliant transformers that are recyclable and non-polluting, which can be used in outdoor applications for which companies typically use oil-based solutions.

A very clear tendency in this context is the use of 

. These ferries typically carry batteries that must be charged quickly in port and withstand the entire journey to the port of arrival.

transformers required transformers are very special

, and typically have several secondaries with particular impedances and a need to withstand large loads for short periods of time.

has participatinged in designing and manufacturing transformers in several such projects during the last two years in combination with 

. All this is complemented by a dedicated and expert service department. Repair operations on board are sometimes complex and often urgent, so the personnel dedicated to this task need to be top-notch. 

Moreover, the marine sector is very demanding, not only technically, but also in terms of project management. Professionals are required to have extensive experience in this highly specialized area.

Technically, this market is heavily regulated by 

 that managers must understand perfectly. In addition to the design itself, structural analysis using a finite element approach helps to verify the feasibility of the proposed solutions.

One feature differentiating marine transformers is the 

. This influences not only the size and weight of the final solution, but also its 

 and resistance to failure. The most common types of cooling are 

 (AN), in which the transformer does not require external cooling, and 

 (AFWF), where the transformer requires a highly specialized air-water heat exchanger integrated in its enclosure, where water is used to cool the air inside and therefore also the transformer coils.

Another common characteristic is the use of integrated 

 to help with inrush currents that can damage the main transformer.

Lastly, given the environment where these transformers must operate, proper corrosion protection (metal treatments and painting) is necessary.’

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

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

This is the age of data. Millions of devices are connected to the internet, the number of which continues to grow rapidly. Enormous amounts of data are captured, measured, and controlled to help improve operations, increase productivity, improve safety standards, and search for cost-effective solutions. The IOT, artificial intelligence, data analytics, and cloud storage are just some of the major drivers of the phenomenal growth of data centres.

TMC Transformers offers a comprehensive range of MV (distribution) and LV (isolation) dry type transformers, engineered specifically for use in data centres. Our knowledgeable and experienced engineers design solutions that are safe, highly-robust, efficient, environmentally sustainable, and maintenance free — critical factors for such demanding applications. Among many important considerations, attention must necessarily be given to factors such as load characteristics (non-linear loads with high harmonic content), transient voltages (frequent switching), noise control, and management of leakage currents.

Technology “made in TMC”: all the data center needs is tmc technology

and execution, it is quite often under discussion which one can be the 

to have the best result in terms of performances.”

The analysis must be carried on considering different topics

Aluminium transformers VS copper transformers

TMC Transformers products are realized for distribution and special applications: two very different souls combined together under a single roof, to offer to our customers the most suitable technology and service. The company is mainly working on dry type transformers and reactors for all the applications worldwide. We are talking about industry, simple distribution for building and infrastructures, traction substations, marine and offshore, oil and gas, renewable energy, battery storage, mining, data center, power plants, e-mobility.

For marine and offshore application, TMC supplies marine converter transformers, distribution transformers and reactors, applied to Naval vessels, cruise liners, container vessels, offshore oil & gas vessels down to smaller research vessels.

For Power Generation, products are designed to fulfill the needs of simple distribution or excitation systems.

In Industrial context, every industrial specialty needs transformers and inductors to handle correctly electric power to feed, control and operate machinery.

In the Oil and Gas sector TMC can fulfill needs in any area, from drilling, onshore and offshore production and transportation with ships or pipelines, all the way through to final processing in the refinery.

In the last couple of years, we developed especially transformers for outdoor installation (so either for mining, battery storage, some industrial plants or plants for energy production), meaning transformers suitable, from IP34 to IP56 or even IP68, for going underwater. We challenge the market of dry type transformers putting our solutions outdoor where there could be a quite harsh environment.

In the last month, following the acquisition of RITZ power transformers, we acquired a new technology, called GlasVac: a new cast technology with a higher level of fiber glass, using casting processing vacuum. This technology has both the benefit of using fiber glass, making transformers more resistant especially from a mechanical point of view, and on the other side the vacuum process guarantees low levels of partial discharge. This technology will be used as alternative to the traditional cast and will be potentially applied to a number of applications where it can be effectively used to give an advantage.

The most innovative development concerns outdoor transformers where we introduced new ways to protect the transformers and innovative solution to cool it down. We can now deliver a proper solution for any specific ambient challenging the most polluted, humid or aggressive environment. As an example of this new innovation, we have recently done, on one side, an installation in a mine in the middle of the desert ,and on the other side, one in very snowy and cold area, close to the Arctic Circle.