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| W-CVT Wind continousily variable transmission | ||
| abstract | The proposed power split transmission for WECS, called W-CVT allows to control the speed of the turbine rotor by keeping constant the speed of the electric generator. | |
| Description | The proposed power split transmission for WECS, called W-CVT allows to control the speed of the turbine rotor by keeping constant the speed of the electric generator. The W-CVT is constituted by a planetary gear set integrated with a small size electric machine. This device is installed between the step-up gearbox and a fixed speed fixed frequency electric generator. The limitation of the transmissible torque between the rotor and generator due to the introduction of the W-CVT could be preserve the system components during wind-gusts or electric faults on the grid side. The CVT decouples the variable speed of the gear train output from the fixed (or quasi fixed) speed of the generating machine. In this way the electric generator can be a conventional wound rotor synchronous machine or a squirrel cage induction machine where the power is extract by the stator windings only, yielding to reduce the weight and costs of the electric generator and power electronic systems The W-CVT concept has been fully developed, the dynamic model of a complete WECS transmission based on the W-CVT, a design criteria for sizing the CVT and some preliminary experimental results obtained with this system are available. |
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| Keywords | WECS wind energy conversion system; CVT continuously variable transmission; electric drives; renewable energy; | |
| Link1 | www.die.unibo.it | |
| Laboratory | UNIBO - LEMAD | |
| Partner | UNIBO | |
| Topic | Energy | |
| Code | 1 | |
| Direct LISEA result | Falso |
Log: Zoom_RESULTS-EN
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