Sector · Wind Power
Wind Generator Service for Onshore Wind Farms
Onshore wind farm operators in Mexico and Central America manage mixed fleets of DFIG, asynchronous and direct-drive PMG wind generators under variable-speed operation, grid code obligations and remote-site logistics. TEMISA Power Gen services the electrical generator only — diagnostics, repair and rewinding, on site and in our workshop — not the blades, gearbox or turbine control. Independent workshop. documentation.
Onshore · DFIG · Asynchronous · PMG
IEC 60034IEC 61400IEEE 115Industry challenges
What wind farm operators are solving today
Wind generators operate under variable-speed conditions with slip rings, frequent partial-load grid coupling and an operating envelope that stresses windings, bearings and magnetic circuits in ways that no two-pole synchronous machine ever sees.
- Generator access via tower crane or nacelle hoist — every replacement is a logistics project
- DFIG rotor slip ring and brush wear from variable-speed operation under partial-load grid coupling
- PMG rotor magnet integrity and bearing inspection on direct-drive platforms
- Insulation ageing in stator and rotor windings under variable-speed operation and thermal cycling
- Bearing wear and vibration that must be diagnosed before they reach the windings
- Remote wind farm locations where field logistics and crew lodging require planning
- Mixed fleets — multiple OEMs and platforms within the same wind farm operator portfolio
Why TEMISA Power Gen
Six differentiators for wind power operations
Wind generator rewinding capability — stator and rotor rewinding for DFIG, asynchronous and synchronous wind generators
— documentary traceability for operator and IPP audits
Multi-OEM capability across the wind generator market — Acciona, Vestas, GE, Siemens Gamesa, Nordex and other platforms
On-site DFIG diagnostics — slip rings, brushes, rotor windings and excitation — when access to the generator allows it; access and lifting are validated with the operator on each project
One clearly bounded scope: the electrical generator — not the blades, gearbox, nacelle, turbine control or power converter
In-shop overhaul at our own 5,600 m² workshop in Tlajomulco, Jalisco — diagnostics, rewind and final testing
Equipment we serve
Typical equipment in wind farms
Equipment
Wind generators
Maintenance and repair of wind generators — DFIG, asynchronous and PMG platforms. Stator and rotor rewinding in shop.
See equipmentEquipment
Synchronous generators
Synchronous generators for wind applications including direct-drive PMG platforms. In-shop overhaul and field service.
See equipmentEquipment
DFIG slip rings and excitation
Replacement and maintenance of slip rings, brush gear and excitation systems on DFIG wind generators — variable-speed wear. On-site and in-shop service.
See equipmentKey services
Priority services for wind power
Service
Preventive maintenance
Generator maintenance planned around the wind farm outage windows: inspection, electrical testing and slip ring and brush service on DFIG generators.
See serviceService
Stator and rotor rewind
In-shop rewind of wind generator stators and rotors. Class F/H insulation and VPI impregnation.
See serviceService
Electrical testing
Megger, polarization index, surge comparison and Hipot testing on wind generator stator and rotor windings.
See serviceService
Dynamic balancing
Dynamic balancing of wind generator rotors after rewinding or bearing replacement under ISO 1940. In-shop balancing machine.
See serviceService
Field services on site
On-site inspection, electrical testing and slip ring and brush service on the generator. Nacelle access, personnel clearances and lifting are agreed with the operator on each project.
See serviceStandards applied
Standards we apply to wind power work
Every intervention is documented in a format compatible with wind farm operator audits, IPP investor reporting and grid code compliance. Full traceability by work-order number under .
- IEC 60034-1 — Rotating electrical machines: rating and performance
- IEC 61400-1 — Wind turbines: design requirements (electrical interface)
- IEEE 115 — Test procedures for synchronous machines
- IEEE Std 95-2002 (recommended practice, inactive-reserved) — DC high-voltage insulation testing of AC machines rated 2300 V and above
- — Quality management system
- ISO 10816 — Mechanical vibration evaluation of machines
- ISO 1940 — Mechanical vibration: balance quality requirements
Scope
What we service and what we do not
We service the electrical generator of the wind turbine: stator, rotor, slip rings, excitation and windings. We do not service blades, gearbox, nacelle, turbine control, the power converter or wind farm O&M. The step-up transformer is handled by TEVKO, our sister division.
FAQ
Frequently asked questions — Wind farm generator service
Questions we often receive. Can't find yours? Email us at ventas@temisapowergen.mx.
Do you rewind DFIG (doubly fed induction generator) rotors?
Yes. DFIG rotor rewinding is one of our wind sector capabilities. The rotor is extracted, the windings are removed, the rotor is cleaned and rewound with Class F/H insulation and VPI impregnation. Slip rings are reconditioned or replaced, and the rotor is dynamically balanced before final acceptance testing.
Do you service the generator-side electrical components on DFIG wind turbines?
Yes. Our wind farm scope is the generator: DFIG, PMG or synchronous generator, slip rings, brush gear, excitation system and stator and rotor windings — diagnostics, predictive maintenance, repair and rewinding. The power converter is outside our scope. The step-up transformer is handled by our sister division TEVKO, which specializes in transformers and substations.
Do you service the whole wind turbine?
No. TEMISA Power Gen services the electrical generator only: stator, rotor, slip rings, excitation and windings. Blades, gearbox, nacelle, turbine control and the power converter stay with the turbine manufacturer or the wind farm operator. We are an independent workshop, not affiliated with any turbine manufacturer.
Which wind generator OEMs do you support?
TEMISA is a non-exclusive authorized service representative for TDPS generators in Mexico (agreement dated 12 January 2026, signed 19 February 2026). Supply, parts and warranty terms are confirmed in writing for each project. TEMISA Power Gen is an independent multi-brand service shop; the manufacturer's name identifies the equipment serviced.
Can you remove a wind generator from the nacelle for shop overhaul?
Removing the generator from the nacelle requires a crane and a planned outage window, and is arranged by the wind farm operator. TEMISA Power Gen receives the generator at the workshop for diagnostics and overhaul and returns it with its test report. Reinstallation and turbine commissioning stay with the operator or the manufacturer.
Contact
Need service for your industrial generator or turbogenerator?
Response and quote timing confirmed after reviewing your request. Emergency support by arrangement across Mexico and Central America.
Quote requests
ventas@temisapowergen.mxDirect line
+52 33 3614 2460Shop hours
Monday to Friday 8:30–17:30 and Saturday 8:30–13:30 (closed Sunday)
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Tell us what you need
Our 4-step quote form captures the essentials: service type, equipment, capacity and contact. Response and quote timing depend on the information received and agreed scope.
· IEEE / IEC