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Static Frequency Converters

Static frequency converters are applied in many applications involving generation, transmission, distribution, and use of electrical energy. Their inherent capability to control voltage, frequency and power flow brings flexibility and energy efficiency to a new level. Developments in power electronics have reduced their cost and increased their power rating. They contribute to a more sustainable world due to their capability to integrate renewable energy sources, reduction in energy consumption, and enabling environmentally friendly transport systems.

Bringing electric energy to a new level of efficiency and flexibility

over 1 billion

By 2028, over 1 billion passengers will use rail transportation globally

78 GW

Additional pumped storage added by 2030

- 42 %

of GHG emissions committed by countries (2030 vs 2024)

Why?

SFCs bring several advantages needed by our evolving grid:

  • More sustainable supply

  • Higher efficiency

  • Lower Capex and Opex

  • Better grid compatibility

What?

SFCs are controllable voltage sources. They can: 

  • De-couple a load from the grid
  • Adapt the frequency
  • Adapt the voltage
  • Control the power flow
  • Control the reactive power independently on both sides

How?

  • Powerful in-house developed semiconductors that provide the desired voltage

  • Long experience in medium voltage SFC applications with high requirements on availability, efficiency and robustness

Static Frequency Converters support in balancing the energy trilemma

Sustainability

Decarbonization of industries and utilities, integration of renewable energy sources 

Security of Supply

SFCs offer power flow control, independent reactive power control, as well as additional functionalities such as virtual inertia, black start or grid forming control. With that, they fulfil even most stringent grid code requirements.

Affordability

SFC systems can be more cost-effective compared ​ to other technologies, especially when looking from a system perspective.

Industry Leader

Hitachi Energy has more than 40 years of experience in high power medium voltage SFCs for various applications, such as Rail power supplies, hydro pumped storage power plants or grid interties

When evaluating the SFC solution on a system level, it can be a complete game-changer, as SFCs in many cases allow to reduce both CAPEX and OPEX costs. This is why their adoption is expanding into new markets, with customers who have tested the concept eager to embrace it again and again

Tobias Thurnherr-Schlumpf
Global Product Manager, Static Frequency Converters

Applications

Rail Static Frequency Converters

Hitachi Energy’s Static Frequency Converters (SFCs) bring a new level of flexibility to the design of railway electrification systems compared to conventional transformer-based substations. By leveraging advanced power electronics, SFCs help reduce both CAPEX and OPEX, increase maintenance flexibility, ensure grid code compliance, and support sustainability goals through electrification and lower energy demand from the grid.

For more than 40 years, Hitachi Energy has been the reference in static frequency converters (SFC) for railway applications. SFCs ensure grid compatibility of traction power supplies, while optimizing performance of railway corridors.

Solutions

Rail SFC Light - Solution for 16.7Hz and 25Hz rail electrification
Rail SFC PCS6000 - Dynamic shunt compensation and static frequency conversion for 50/ 60 Hz traction power supply

Customer Success Stories

Part of categoryCustomer Story
Power quality solution reduces grid connections by almost half
Part of categoryFeatures
Hitachi Energy innovative technology enables KiwiRail to deliver more train services
12-07-2023 | 2 min read
Part of categoryFeatures
Hitachi partnership with Global Centre of Rail Excellence
18-04-2023 | 7 min read
Part of categoryFeatures
Pioneering solution for pumped hydro storage plant in Europe
09-02-2023 | 3 min read

SFCs in Social Media

Revolutionizing Rail Electrification with Hitachi Energy’s Static Frequency Converters (SFCs)

Revolutionizing Rail Electrification with Hitachi Energy’s Static Frequency Converters (SFCs)

Imagine powering a railway line with up to 50% fewer substations—without compromising performance. That’s the transformative potential of Hitachi Energy’s SFC technology.

Read more

Meet the catalysts for smarter rail electrification: Static Frequency Converters!

Meet the catalysts for smarter rail electrification: Static Frequency Converters!

As rail networks push toward decarbonization, the challenge remains: how to electrify efficiently, affordably, and without compromising grid stability. Static Frequency Converters (SFCs) are emerging as a game-changer—enabling:

Read more

Modernizing Czech Republic’s rail electrification system with Static Frequency Converters

Modernizing Czech Republic’s rail electrification system with Static Frequency Converters

As the world moves toward cleaner, smarter transportation, Hitachi is proud to support this transformation with proven solutions like Static Frequency Converters (SFC).

Read more

FAQs

Frequently Asked Questions

Our SFCs are based on Integrated Gate Commutated Thyristors (IGCTs) semiconductors developed in-house. They have a proven track record of excellent robustness and very low losses. They are the optimal choice for highly demanding applications like Rail, Hydro and grid-intertie applications.

The containerized design enables the delivery of pre-fabricated and pre-tested modules, ensuring minimum time required on site for installation and commissioning and very low risk for project delays.

We have more than 40 years of experience with thelargest installed base in several applications, which makes us an excellent partner ensuring peace of mind for our customers 

Grid-enSure®
Flexible AC Transmission Systems (FACTS)
Railway Solutions

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