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Powering Performance Through Engineering
At CEFEM POWER, engineering is not a support function — it is the foundation of every solution we deliver.
For over 40 years, we have been designing and manufacturing custom passive components, including medium-frequency inductors, transformers, and power film capacitors for demanding power electronics applications.
Our approach is fully application-driven. Rather than adapting standard products, we develop optimized solutions tailored to your electrical, thermal, mechanical, and environmental constraints — ensuring the right balance between performance, reliability, compactness, and cost.
Mastering Your Application
Every project starts with a deep understanding of your system:
- Converter topology (IGBT, SiC, high-frequency architectures)
- Voltage, current, and power levels
- Thermal environment and cooling strategy
- Mechanical integration and footprint constraints
- Standards and lifetime expectations
This global vision allows us to design components that are not only compliant, but fully optimized for their final application — whether it is a DC-link capacitor, an AC filter, a resonant component, a medium-frequency inductor, or a high-power transformer.
Designing Performance
For magnetic components, we optimize core materials, geometries, and winding configurations to control losses, parasitics, and thermal behavior.
For film capacitors, we focus on dielectric selection, internal architecture, current handling capability, and voltage endurance to ensure long-term stability under electrical stress.
Every design is developed with a clear objective: maximize power density while maintaining reliability and efficiency.
Simulating Before Building
Simulation is at the heart of our development process.
We model electrical, thermal, and mechanical behavior from the earliest stages to validate key design choices before prototyping. Thermal simulations allow us to predict temperature distribution and identify hot spots, while electrical simulations ensure accurate performance in terms of inductance, capacitance, losses, and ripple current capability.
This simulation-driven approach reduces development risks, accelerates iterations, and ensures first-time-right designs.
Mastering Heat
Thermal management is a critical factor in performance and lifetime.
We design our components to operate efficiently under real conditions, using optimized cooling strategies such as natural convection, forced air, or liquid cooling when required.
By minimizing losses and ensuring uniform temperature distribution, we prevent localized overheating and significantly improve long-term reliability — even in high power density environments such as data centers, electrification systems, and industrial converters.
Controlling Insulation & Partial Discharge
Reliability starts with insulation — and mastering partial discharge is key.
We design insulation systems that ensure controlled electric field distribution, proper creepage and clearance distances, and long-term dielectric integrity. Particular attention is given to partial discharge behavior, which can significantly impact lifetime if not properly managed.
Through careful material selection, geometry optimization, and validation processes, we ensure that our components operate safely under high voltage stress and harsh environmental conditions.
This expertise is critical for both high-voltage capacitors and medium-frequency magnetic components.
Combining Magnetic & Dielectric Expertise
Our strength lies in mastering both magnetic and dielectric technologies.
This dual expertise allows us to design inductors, transformers, and film capacitors that are not only individually optimized, but also fully coherent when used together within the same system.
It is particularly valuable for applications such as resonant converters, harmonic filtering, and high-efficiency power conversion systems.
Testing What We Design
Engineering and production work side by side, enabling fast validation and continuous improvement.
We perform in-house testing to verify electrical performance, thermal behavior, and mechanical robustness under realistic operating conditions.
This close loop between design and manufacturing ensures consistency, reduces development cycles, and guarantees that each component meets its specifications before delivery.
Engineering Cost Efficiency
Performance matters — but so does competitiveness.
From day one, we integrate cost into our design process by optimizing materials, geometry, manufacturability, and sourcing strategies.
This design-to-cost approach allows us to deliver custom components that meet technical requirements while remaining economically viable for both prototyping and series production.
Engineering the Future of Power Electronics
Power electronics is evolving toward higher switching frequencies, higher efficiency, and increased power density — driven by technologies such as SiC and advanced converter architectures.
CEFEM POWER supports this transition by developing passive components adapted to these new challenges, serving applications such as data centers, railway systems, renewable energy, energy storage, marine systems, and industrial power conversion.
Beyond components, we act as an engineering partner — helping our customers push the limits of performance, reliability, and integration.