Abstract
This study presents two methods to improve the maximum power point tracking strategy for a new wind power system that consists of a planetary gear, two permanent magnet synchronous machines, and loads. The generator, the electric motor, and the wind turbine are connected to the sun gear, ring gear, and carrier of planetary gear, respectively. With the aid of an electric motor, the system can track the maximum power without the full-power converter for generator because of its special operating principle. Conventional optimum torque (COT) control method with a torque error feed forward branch is proposed to obtain faster response compared with COT control method. Moreover, considering that the actual power cannot reach the theoretical optimum point due to the loss torque of the system, the COT control with torque loss compensation is described. A method is also proposed to estimate loss torque. Finally, the theoretical analysis is verified by simulation and experiment results.
| Original language | English |
|---|---|
| Article number | 7904621 |
| Pages (from-to) | 1063-1071 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Energy Conversion |
| Volume | 32 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2017 |
| Externally published | Yes |
Keywords
- Maximum power point tracking
- permanent magnet-(PM) synchronous generator
- planetary gear
- power allocation
- wind power
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