Overview
A pitch system monitors and controls the angle of attack of the rotor blades and thus controls the speed of the rotor. Furthermore it is the main brake of a wind turbine. The pitch drive is the main part of a pitch system as it takes over the control of it. Nidec’s SSB is designing and producing high performance AC, DC & Servo drives for more than 25 years with a specificity of very high level of reliability and safety. Due to this Nidec’s SSB can also ensure spare part availability of more than 20 years.
Integrated functions
- DC link charging
- Control/monitoring of motor brake
- 24VDC power supply – 12A
- Backup charger
- Mains voltage monitor
- Backup voltage monitor
- Motor temperature monitoring
- Temperature control of switch cabinet
- Direct 24V contactor control
Advantages
- Plant reliability
- More synergy effects (scalable platform)
- Enhanced condition monitoring (improved diagnostics and serviceability)
- Greater proportion of fully automated tests
- Battery Lifecycle Management
- Increased plant efficiency through integration of Nidec’s SSB BladeVision blade sensor technology
- Possibility to integrate blade sensors
Technical Details
- Operation temperature range: -30°C .. +60°C
- Suitable for environmental conditions with shock and vibration acc. 3M3 (EN60721-3-3)
- DIFFERENT MOTOR TYPES:
- AC-asynchronous motors
- DC motors
- AC-PMSM motors
- Backup nominal voltage: 216V to 408V DC
- Digital IN-/Output:
- 9x DI configurable
- 8x DO configurable
- 1x High current output for 24VDC motor brake
- Analogue In-/Output:
- 5x Pt100
- 1x PTC or KTY
- 1x 0 .. 20mA
- Interfaces for diagnoses/service:
- 1x USB
- 1x Interface for manual control unit / Bluetooth dingle + smartphone app
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