OEM Wind turbine converter field service, on-site expertise from the converter specialists
30+ years of converter expertise, right where you need it
When a wind turbine converter fails or needs scheduled maintenance, the fastest solution is often not shipping a component, it is sending the right engineer. ConverterTec’s field service teams bring deep power-electronics expertise directly to your site, with the knowledge, tools, and parts needed to diagnose, maintain, and restore converter performance quickly and reliably.
Whether you need fault diagnostics, preventive maintenance, commissioning support, or on-site repair, our specialists act quickly to minimise downtime and keep your turbines producing power. With access to original documentation, spare parts, and proprietary diagnostic tools, we ensure that every service visit delivers the right solution, not just a temporary fix.
People who know your converter best
Every ConverterTec field technician is trained specifically in frequency converters and has direct experience across multiple turbine platforms. Our teams combine hands-on field knowledge with more than 30 years of converter engineering heritage, from SEG and Woodward to today’s ConverterTec.
This unique foundation allows us to diagnose issues quickly, work safely, and restore operation with full confidence. Our technicians are certified for wind-turbine environments, familiar with every detail of our hardware and control systems, and supported by engineering specialists when needed. Service that solves problems not just symptoms.
ConverterTec field service is more than on-site repair. Each intervention is connected to our broader service network, including spare parts supply, converter upgrades, repair centers, retrofit engineering, and condition monitoring. This integration ensures that your turbine doesn’t just return to operation quickly – it returns stronger, safer, and optimized for long-term reliability.
Fast response
Issues solved directly on-site, minimizing downtime and logistics.
Expert technicians
Specialists with deep converter experience and OEM documentation access.
Efficient diagnostics
Proven tools and test methods for rapid fault identification.
Safe execution
Trained and certified for work in wind turbine environments.
Complete system insight
Field service aligned with our spare parts, upgrades, and repair solutions.
Global coverage
Support available through regional hubs and service partners worldwide.
Need on-site support? We’re ready.
Get in touch now.
On-site converter field service for ConverterTec, Woodward, SEG, IDS, Efacec and other platforms
On-site field service is provided for our own converter platforms: ConverterTec, former Woodward, SEG, IDS, and Efacec. For these platforms our capability covers the full range of converter interventions, from emergency response to planned maintenance visits, each supported by our engineering team, spare-part supply chain, and repair center. For other turbine platforms, such as GE and Vestas, we offer targeted solutions, including converter replacement and IGBT module replacement (see below).
Fault diagnostics and troubleshooting
When a converter trips, faults, or behaves unexpectedly, accurate and fast diagnosis is everything. Our field engineers use proprietary diagnostic tools developed specifically for ConverterTec, former Woodward, SEG, IDS, Efacec and other converter platforms, enabling rapid identification of faults at component level, including IGBT failures, generator failures and electronic boards faults, control system errors, and protection relay trips. We diagnose the root cause, not just the symptom, so the same fault does not return.
Preventive maintenance and health checks
Planned wind turbine converter maintenance is the most cost-effective way to manage converter reliability over the long term. Our preventive maintenance visits cover a structured inspection of all critical converter components: visual and electrical checks, thermal imaging to identify hotspots, capacitor condition assessment, cooling system inspection, and control system and protection systems review. Each visit produces a condition report and, where needed, a recommended action plan to address identified risks before they become failures.
Commissioning and recommissioning
We provide commissioning support for new converter installations, replacements, and major upgrades, as well as recommissioning following repair or retrofit. Our engineers verify full system functionality under operating conditions, check electrical connections and control system configuration, and confirm performance before handing back to the operator. Recommissioning is also available following extended downtime or major component replacement to ensure safe and reliable restart.
On-site repair and component replacement
Where a component can be replaced in the field without returning the converter to our repair center, we do it. Our field teams carry a range of critical spare parts for the most common converter platforms and can perform IGBT module replacement, capacitor bank replacement, control board swaps, and driver circuit repairs directly at the turbine. For complex repairs requiring workshop facilities, we coordinate return logistics to minimize turbine downtime.
Retrofit and upgrade field support
Many converter upgrades and retrofits require on-site technical support to complete safely and correctly. Our field service teams work alongside our retrofit engineering team to support the physical installation and commissioning of upgrade packages, including IGBT module replacements and hardware modifications. This ensures that upgrades are completed to specification and that the converter is returned to full operation with the expected performance improvement.
Need on-site support? We’re ready.
Get in touch now.
Converter platforms we service on-site, and the turbines they run in
Our field service capability covers all ConverterTec & former Woodward, SEG, IDS, Efacec and other platforms. These are used in the following turbines: 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 and others.
Every ConverterTec field technician is trained specifically for these converter systems, with access to original documentation, platform-specific diagnostic tools, and the engineering knowledge accumulated over decades of converter development and service.
We provide field service for other platforms like GE, ABB, Vestas, Prowind/Converteam and others. Contact us with more details about your system.
Why wind farm owners and operators choose ConverterTec field service
Every ConverterTec field technician is trained specifically in frequency converters and has direct experience across multiple turbine platforms. Our teams combine hands-on field knowledge with more than 30 years of converter engineering heritage, from Woodward to today’s ConverterTec.
This unique foundation allows us to diagnose issues quickly, work safely, and restore operation with full confidence. Our technicians are certified for wind turbine environments, familiar with every detail of our hardware and control systems, and supported by engineering specialists when complex faults require deeper analysis. We solve problems, that others can’t.
Connected to our full aftermarket network
ConverterTec field service is more than on-site repair. Each intervention is connected to our broader service network, including spare parts supply, converter upgrades, our repair center in Bulgaria, retrofit engineering, and condition monitoring. This integration ensures that your turbine does not just return to operation quickly, it returns stronger, safer, and optimised for long-term reliability.
Proven scale and reliability
With over 24,500 converters installed globally, 45GW+ of installed power supported, and 237 customers across 50 countries, ConverterTec’s field service capability is backed by one of the most extensive converter knowledge bases in the wind industry. Our ISO 9001-certified quality processes underpin everything we do, in the workshop and in the field.
Field service support
ConverterTec delivers field service to wind farm operators worldwide, with dedicated North America coverage coordinated from our US office in Loveland, Colorado. Whether you need emergency field response, planned maintenance visits, or commissioning support, our teams deploy across 50 countries to keep your turbines running, wherever they are located.
Need on-site support? We’re ready.
Get in touch now.
Frequently asked questions, wind turbine converter field service
What does converter field service include?
On-site field service covers fault diagnostics and troubleshooting, preventive maintenance and health checks, commissioning and recommissioning, on-site component replacement, and retrofit and upgrade support for our own converter platforms: ConverterTec, formerly Woodward, SEG, IDS, Efacec and other platforms.
Can you perform preventive maintenance visits for wind turbine converters?
Yes. We provide structured preventive maintenance visits covering visual and electrical inspection, thermal imaging, capacitor condition assessment, cooling system checks, and control system review. Planned converter maintenance is the most effective way to prevent unplanned failures and reduce long-term maintenance costs. Each visit includes a condition report with findings and any recommended follow-up actions.
Which turbine platforms does your field service covers?
Our field technicians service our own converter platforms on-site: ConverterTec, formerly Woodward, SEG, IDS, and Efacec, which run in turbines such as Nordex, RePower/Senvion, GE 1.X, Suzlon, Fuhrlander, DeWind, Alstom, Sewind and others. For converters from other manufacturers, we provide converter replacement and IGBT module replacement. Platform-specific diagnostic tools and original documentation are available for all supported own-brand platforms.
How quickly can you deploy a field service team?
Response times depend on location and urgency. Our field service is coordinated through regional hubs and service partners to ensure efficient deployment. For urgent situations, we prioritise rapid response to minimise turbine downtime. Contact our team with your location and requirements and we will confirm the fastest available deployment option.
Do you provide converter field service in North America?
Yes. We provide converter field service for wind farm operators in the United States and across North America. Our US office in Loveland, Colorado handles North American inquiries and field deployments. Contact Mark Rush directly for North America field service requests.
Do you provide field service outside the United States?
Yes. ConverterTec field service teams operate in 50 countries, supporting more than 24,500 installed converters across 45GW+ of wind capacity. Wherever your turbines are located, we can coordinate emergency response, scheduled maintenance, or commissioning support.
Do you provide field service in Japan?
Yes. ConverterTec field service teams operate in 50 countries, supporting more than 24,500 installed converters across 45GW+ of wind capacity. Wherever your turbines are located, we can coordinate emergency response, scheduled maintenance, or commissioning support.
Do you provide field service in Australia?
Yes. ConverterTec field service teams operate in 50 countries, supporting more than 24,500 installed converters across 45GW+ of wind capacity. Wherever your turbines are located, we can coordinate emergency response, scheduled maintenance, or commissioning support.
Do you provide field service in Asia?
Yes. ConverterTec field service teams operate in 50 countries, supporting more than 24,500 installed converters across 45GW+ of wind capacity. Wherever your turbines are located, we can coordinate emergency response, scheduled maintenance, or commissioning support.
Do you provide field service in Europe?
Yes. ConverterTec field service teams operate in 50 countries, supporting more than 24,500 installed converters across 45GW+ of wind capacity. Wherever your turbines are located, we can coordinate emergency response, scheduled maintenance, or commissioning support.