Modern wind turbines should be optimally adapted to the wind available at their location and allow efficient operating conditions. In addition to the wind rotor itself, components of the drive train such as the transmission and the electric generator are crucial.
The experimental unit contains a typical wind power drive train at laboratory scale, which is driven by an electric motor. The motor enables low speeds with high torque. This simulates a typical slowly rotating wind rotor. The speed can be adjusted.
The drive train consists of the slow-rotating drive side, the fast-rotating generator side and a three-stage spur gear between the drive and the generator. The electrical load of the generator can be varied.The experiments with simulate typical operating conditions of a drive train. To do this, the electrical load of the generator and the speed of the drive motor are varied. This makes it possible to approximate operating points of a typical torque characteristic. The calculated characteristic results from the mechanical power of a wind rotor for a given wind speed.
Learning objectives And experiments
- Conversion of rotational energy into electrical energy
- Influence of torque and speed on the efficiency of the transmission
- Influence of torque and speed on the efficiency of the generator
- Influence of the typical torque characteristic of a wind rotor on the overall efficiency of the drive train
Specification
- Experimental unit for measurements on a wind power drive train
- Drive train with spur gear and DC generator
- Low-speed drive motor with adjustable speed simulates wind rotor
- Simulation of typical torque characteristics
- DC generator with connections for electrical load
- Adjustable load with switchable display for current or voltage
- Sensors for generator speed and torques of the drive side and of the generator
- Measuring amplifier with digital displays and control elements
- Analogue outputs for transmitting the measured values for torque and speed
Technical Specification
- DC generator
- Rated speed: 1100min-1
- Max. Power: 150W
- Max. Current: 10A
- Max. Voltage: 28V
- Spur gear
- Transmission ratio: 1:53
- Rated load capacity: 335Nm
- Rated efficiency: 94%
- Drive motor
- Rated speed: 22min-1
- Speed range: 3…22min-1
- Rated power: 0,37kw
- Max. Torque: 153Nm
- Measuring ranges
- Speed: 0…1200min-1
- Torque: 0…200Nm
- Torque: 0…10Nm
- Current: 0,005…25A
- Voltage: 0…80V
- 230V, 50Hz, 1 phase
- 120V, 60Hz, 1 phase, 230V, 60Hz, 1 phase
