Siva 750kW Wind Turbine
The Siva 750kW wind turbine represents a step forward in wind energy engineering. A gearless, permanent-magnet direct drive system built for utility-scale performance, it eliminates mechanical complexity at the source, delivering superior efficiency, grid-compliant output, and a 20-year operational lifetime with significantly reduced maintenance demands.
Why Siva 750kW
- Gearless Permanent Magnet Direct Drive with fewer components and fewer failure points
- Higher efficiency across the full wind speed range with no gearbox losses
- Significantly reduced maintenance intervals and lower lifecycle operating costs
- Full power conversion delivering clean, grid-compliant output at all times
- Engineered for utility-scale and high-wind sites demanding uncompromising performance
Specifications
Technical Specifications
| Operational Data | |
| Rated Power | 750kW |
| Turbine Type | Horizontal axis, upwind |
| Speed | Variable speed |
| Rotor & Wind Data | |
| Rotor Diameter | 50 m (U50) / 57 m (U57) |
| Hub Height | 50 m / 68 m / 75 m |
| Cut-in Wind Speed | 3 m/s |
| Cut-out Wind Speed | 25 m/s |
| Rated Wind Speed | 12.5 m/s (U50) / 11.5 m/s (U57) |
| Extreme Wind Speed (Ve50) | 70 m/s (U50) / 52.5 m/s (U57) |
| Drivetrain & Generator | |
| Drive System | Gearless direct drive |
| Generator Type | Radial flux, Permanent magnet, Synchronous |
| Power Conversion | |
| Conversion Type | Full-capacity AC / DC / AC conversion |
| Grid Connection | IGBT-based |
| Control & Safety Systems | |
| Control System | PLC-based with RTOS |
| Pitch System | Independent electric blade pitch |
| Braking | Aerodynamic with pitch battery backup + Mechanical rotor brake |
| Structure & Environment | |
| Bearings | Two separate roller bearings |
| Tower | Conical Steel Tower (Tubular, PU Painted) Lattice Tower (Hot Dip Galvanized Steel Structure) |
| Design Class | IEC IA (U50) / IEC IIIA (U57) |
| Design Lifetime | 20 years |
| Operating Temperature | –10°C to 40°C |
Features
Key Features
Gearless Direct Drive
Permanent Magnet synchronous generator eliminating gearbox failures. Simplified drivetrain delivering more energy with fewer mechanical losses.
High Efficiency Power
Fully encapsulated PM generator with variable speed operation optimised to capture energy across the entire wind spectrum.
Grid-Friendly Output
Full capacity AC/DC/AC power conversion with IGBT-based electronics ensuring stable, compliant output at all times.
Low Maintenance Design
Dramatically fewer moving parts compared to geared systems. Reduced wear translating to longer service intervals and lower costs.
Monitoring and Control
Full SCADA and CMS integration for real-time visibility. Live performance data and remote diagnostics for proactive fault management.
Models Available
Siva U50 for high-wind sites (50m rotor). Siva U57 for lower wind regimes (57m rotor sweep).
Performance
Performance & Reliability
The Siva 750kW is built for demanding sites and long-term performance. Every engineering decision is made to protect energy yield and reduce operational risk over a 20-year lifetime.
Grid Compatibility
Full-capacity power conversion ensuring continuous grid compliance. Smooth, stable output independent of wind speed fluctuations. Robust grid support capabilities for stable operation across varying network conditions.
Installation Flexibility
Utility-scale wind farms, high-wind onshore sites, and grid-connected projects. Tubular steel tower construction with multiple hub height options for site-specific optimisation.
Support
Service & Maintenance
Designed for low-intervention, long-term operation. Condition-based monitoring via CMS enabling proactive maintenance decisions. Integrated service crane providing safe access to all critical components.
Quality
Quality & Certification
Every Siva 750kW leaves our Perundurai facility under a DIN EN ISO 9001:2015 certified quality management system, engineered to perform from day one to year twenty.
