With wind turbines located in typically remote locations and with the associated difficulty in removing and replacing generators, the need for the highest possible level of quality and expertise during the wind turbine generator repair process is essential.

At RJW we recognise the importance of this and have invested in the very latest repair and test equipment to ensure that every aspect of the generator is inspected and tested during the wind turbine generator repair process with the aim of minimising the chance of unexpected failure.

In addition to the investment in facilities and training we have developed our own dedicated wind turbine generator repair procedure specifically for this type of unit in order to improve reliability and quality of repair enabling trouble-free installation and use once the generators return to site.

During the wind turbine generator repair process, as well as detailed component inspections, the condition of the winding and core of both the rotor and stator are tested and analysed using the state-of-the-art winding and core loss equipment. This is backed up with thermographic analysis of the rotor and stator core to ensure a lack of hotspots within the core that could compromise efficiency and reduce the service life of the generator and a full vibration analysis performed by our own Reliability Engineers.

All stators and rotors that are rewound as part of the wind turbine generator repair are vacuum pressure impregnated to improve the repair life of the generator.

With dynamic test facilities for generators up to 3MW and comprehensive static test equipment we are able to guarantee the future performance of the generators. The specially developed test rig has been built to dynamically test generators following repair, enabling the measurement of electrical and mechanical performance prior to installation, recording stator and rotor winding conformity as well as vibration data under a variety of running conditions.