Wind turbine converter spare parts, OEM-validated supply for your converter platform

Speed and availability when it matters most

Spare parts

Choosing the right spare parts for a wind turbine frequency converter is not straightforward. Component compatibility, specification conformance, and part quality directly affect converter performance, safety, and service life. At ConverterTec, we supply wind turbine converter spare parts that are tested and validated to original specifications, for platforms including ConverterTec, former Woodward, SEG, IDS, Efacec, GE and more.

With decades of engineering expertise, deep original documentation, and close cooperation with qualified suppliers, every part we deliver is built for reliable, long-term performance. Even small deviations from original specifications in alternative components can cause premature wear, reduced system performance, or safety risks. That is why we recommend choosing parts that are tested and validated to exact standards, to protect your converter’s efficiency, safety, and longevity.

Converter spare parts we supply

Our spare parts supply covers the full range of frequency converter components, from power electronics assemblies to control units and protection devices. All parts are sourced and validated specifically for wind turbine converter applications.

IGBT modules and power stacks

We supply IGBT phase modules and power stacks for both machine-side and line-side converter sections, including MP1, NGx, NG03, and Skiip-based modules in air-cooled and water-cooled variants. Where available, we supply state-of-the-art replacement modules that deliver improved thermal performance and longer operating life compared to original parts, without compromising compatibility or converter operation.

Capacitor banks

Capacitor bank assemblies are among the most frequently replaced components in converter maintenance and refurbishment. We supply C-Bank assemblies for all ConverterTec and former Woodward, SEG, IDS converter platforms. Individual capacitor replacement kits are also available for scheduled maintenance.

Control units and controllers

We supply CSC4 main device controllers, DCU and DCU3L decentralised control units, and IDS rack controller boards for all supported platforms. Each control unit is tested for compatibility before delivery and supplied with the relevant documentation to support correct installation and configuration.

DC limiters and chopper modules

IMC limiters, DC limiters, and NGx chopper modules are available for the full range of ConverterTec and former Woodward converter systems. These components are critical to surge protection and safe converter operation and are supplied only in validated configurations.

Protection relays

MFR300 protection relays are available for all ConverterTec platforms. Protection relays are safety-critical components and are supplied with full traceability documentation to support installation verification and compliance requirements.

Contactors and circuit breakers

Vacuum contactors, air contactors, main circuit breakers, and auxiliary switching components are available for the converter platforms we support. Correct specification is essential for these components, as undersized or incompatible contactors are a common cause of converter faults. Our team confirms the correct specification for your specific installation before supply.

Precision-engineered for your converters

Our spare parts are the result of years of advanced product development and service experience. Each part is tailored for demanding wind energy applications and carefully refined to ensure smooth, trouble-free operation. Even small deviations from original specifications in alternative components can cause premature wear, lower system performance, or pose safety risks.
That’s why we recommend choosing parts tested and validated to exact standards to protect your system’s efficiency, safety, and longevity.

What you gain

Fast delivery: Minimize downtime with quick access to critical parts.
Extended lifetime: Protect and prolong your converter systems.
Reliable partner: Count on consistent quality, large stock, and fast support.
Specialized expertise: Benefit from deep know-how in converter spare parts for wind energy.

Supported platforms

Converter spare parts for GE, Woodward, ABB, Vestas and more

We supply converter spare parts across all major wind turbine converter platforms. Our engineering background gives us direct knowledge of the components used in each system, enabling us to confirm compatibility and specification conformance for every part we supply.

Platform	Supported turbines / systems
ConverterTec & former WoodWard, SEG, IDS	Nordex Beta, Gamma, Delta 3k, Delta 4k; RePower/Senvion MM, MD, 3XM, 5M, 6M; Ecotecnia/Alstom/GE ECO; GE 1.X; Suzlon S9.x, S11.x; Fuhrlander MD, FL2500; DeWind D4, D6; Sewind.

Spare parts you can trust. Fast delivery, quality and safety

As your single-source partner, we deliver spare parts for all former SEG and Woodward converter platforms as well as IDS & Efacec. Our comprehensive obsolescence management ensures compatible, tested, and validated solutions even when original components are discontinued, critical for older systems.

We help you stay prepared with recommended spare parts lists for critical items and maintain safety stock to ensure fast availability. Supported by expert technical guidance, you always receive the correct parts for your specific converter type, when you need them most.

Get the parts you need fast and hassle-free

Why wind turbine operators choose ConverterTec for spare parts

As a single-source partner for wind turbine converter spare parts, we combine platform-specific engineering knowledge with fast, reliable supply. Our relationship with each converter platform goes beyond stocking parts — we understand how each component functions within the system and what is required for safe, long-term operation.

OEM-validated parts, not marketplace listings

Every spare part we supply is sourced and validated against original specifications. Our engineering background means we can assess component quality, confirm compatibility, and identify specifications that alternative suppliers may miss. This is particularly important for power electronics components, where small deviations from specification can reduce converter efficiency, cause premature failure, or create safety risks. We do not list parts without knowing what they are used for.

Obsolescence management for legacy platforms

Many wind turbines in operation today use converter platforms where original spare parts are partially or fully discontinued. Our obsolescence management capability ensures that operators of older Woodward, GE, Vestas, and other legacy systems can still source the components they need. We identify, qualify, and validate compatible alternative parts using our engineering knowledge and original documentation, so that supply continuity is maintained even as original components are phased out.

Recommended spare parts lists and safety stock

We help wind farm operators stay prepared by providing recommended spare parts lists for critical converter components, based on our maintenance experience and failure data. We also maintain safety stock for the most frequently required parts, enabling fast delivery when unplanned failures occur. For operators managing larger fleets, we can develop platform-specific stocking strategies to minimise downtime exposure across multiple sites.

Get the parts you need fast and hassle-free

How to request spare parts

How to request converter spare parts

You do not need a part number to request spare parts from us. Tell us your converter platform and what you need, and we will identify the correct component, confirm availability, and arrange delivery.

Step	Action	What happens
1	Tell us your platform	Send us your converter platform (GE 1.X, Woodward, ABB…) and a description of what you need. A part number is helpful but not required.
2	We confirm the right part	Our team identifies the correct component, verifies compatibility with your specific converter configuration, and confirms current availability and lead time.
3	Fast delivery	Parts are dispatched from stock or sourced from our supplier network. Critical components held in safety stock are available for fast delivery to minimise turbine downtime.

Get the parts you need fast and hassle-free

Frequently asked questions — converter spare parts

What converter spare parts do you supply?

We supply large range of wind turbine frequency converter components, including IGBT modules and power stacks, capacitor bank assemblies, CSC4 and DCU controllers, DC limiters and chopper modules, MFR300 protection relays, contactors, and circuit breakers. Parts are available for all major converter platforms, including ConverterTec, former Woodward, SEG, IDS, as well as GE 1.X, Vestas and more types of systems.

Which turbine platforms do you supply spare parts for?

We supply converter spare parts for all major wind turbine platforms, including ConverterTec, former Woodward, SEG, IDS, as well as GE 1.X (ESS and non-ESS), Vestas V66, V80 and V90 and other main brands. IDS and Efacec systems are also supported. Contact us with your platform details and we will confirm part availability.

Can you source parts for discontinued or obsolete components?

Yes. Obsolescence management is a core part of what we offer. When original components are discontinued by the manufacturer, we identify, validate, and supply compatible alternatives using our engineering knowledge and original documentation. This is particularly important for operators of older Woodward, GE 1.X, and legacy converter platforms where OEM spare parts availability is limited.

Do you supply spare parts for GE 1.X wind turbine converters?

Yes. GE 1.X is one of our most commonly supported platforms. We supply phase modules for both ESS and non-ESS variants, rotor-side and line-side IGBT assemblies, AEBI boards, and a range of auxiliary components. Contact us with your turbine model and we will confirm the correct part and current availability.

How quickly can you deliver converter spare parts?

Delivery times depend on the specific component and whether it is held in safety stock. Frequently required parts for the most common converter platforms are held in stock for fast dispatch. For other components, we confirm lead times at the point of enquiry. North American operators can contact our US office in Loveland, Colorado for regional supply coordination.

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