Controller Repairs
With a background in electronic testing and development we can offer a range of power electronics repairs in support of legacy wind turbines. With a range of services, tests and spare components for various controller we can offer independent support and fast turnaround times for failed power electronics.
- Bachmann
- Mita Technik
- COTUS
- Vestas
To ensure high quality controller refurbishment we perform in-house testing and diagnostics of power and communications components and replace all wearing components such as capacitors as part of our remanufacturing process. We understand that some of our customers have had negative experiences of refurbished parts so all of our repairs are subjected to rigorous end of line testing to ensure that they will perform reliably before being installed back into the wind turbine.
Vestas CT294 and CT318 Repair
RCC/VRCC Repair
For legacy Vestas wind turbines such as the V39, V44 and V47 the VRCC controllers have long been a reliability problem. With new parts at such large cost (around 10k EUR) and in short supply, repairs are a good option for those looking to extend the life of their asset.
The VRCC assembly comes in three parts: processor, power module and resistor. In a turbine without active pitch they are able to dissipate any excess energy from gusts like a shunt load.
VRCC Resistor Unit 705100
CT257 RCC Processor
Had enough of VRCC failures?
For those that have had enough of VRCC failures there are other options such as controller retrofit which removes the requirement of this component completely with options to both continue operating with the VRCC or removing it completely. This gives the benefit that if that VRCC does fail then the turbine only derates to 600kW instead of 300kW. Learn more about controller retrofit.
CT Module Repairs
CT3133 DC Input
CT3153 DC Output
CT2123 Thyristor Control
CT3364 External Power Supply
CT3251 Power Control
CT2128 Analogue Input
CT206 Measure transformer box
CT3503 Processor
CTY4402 Microprocessor
Legacy support
For every year that passes, obsolescence for aging wind turbine controller becomes an increasing problem for owners and operators as they try to source parts and solutions for turbines approaching their end of life. We develop engineering solutions to enable continuity of operation even when supply of cores diminish.
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