Wind Turbine Generator Efficiency Based on Powertrain Combination and Annual Power Generation Prediction
1.1. Research Background
1.2. Requirement for Analysis Technology
1.3. Aim of this Study
2.1. Wind Turbine Generator System Configuration
2.2. Component Test to Verify the Analysis Model
2.3. Analysis Model Development
3.1. System Efficiency Analysis
3.2. Annual Power Generation Prediction
- The overall efficiency was examined by testing the performances of a hydraulic pump and a hydraulic motor with hydrostatic transmission, which were the key components of wind turbine generators. In particular, it was confirmed that the overall efficiency decreased with the capacity of the hydraulic motor.
- The serial combination of generators exhibited a higher power generation efficiency when the wind speed was higher than 7 m/s, while the parallel combination showed a higher power generation efficiency when the wind speed was lower than 7 m/s.
- The analysis of e annual power generation energy, which considered the regional characteristics, showed that step 2, which was a combination of the parallel hydraulic motor and serial generator, was the optimal combination and step 5, which was the combination of the large-capacity pump and motor, was the worst combination.
- It was confirmed that power generation efficiency declined sharply when the wind speed exceeded 10–11 m/s, because the maximum power generation capacity of the induction motor was limited. This indicated that the maximum power generation capacity needed to be determined, considering the regional characteristics for designing a wind turbine generator.
- It was possible to predict system performance before the system construction and to systematically and specifically approach problems that may have arisen after the system construction using a simulation model.
- The system performance could be analyzed using an analysis model for designing the controller and blade of a wind turbine generator. This would save the time and cost that were required for research and development.
- The major disadvantage of using a simulation in the concept design stage, was that it could not perform the performance test on all of the components. Therefore, the performance tests on all of the components are required.
- The system will be assembled based on the results of this study, and a full system performance test will be performed. In addition, the verification of the full analytical model will be required before applying it to the various fields that use analytical models.
Conflicts of Interest
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|1||3771 cc/rev||1256 cc/rev||180 cc/rev||40 cc/rev||110 kW|
|2||2512 cc/rev||2512 cc/rev||180 cc/rev||71 cc/rev||110 kW|
|3||3771 cc/rev||1256 cc/rev||180 cc/rev||40 cc/rev||110 kW + 27 kW|
|4||2512 cc/rev||2512 cc/rev||180 cc/rev||71 cc/rev||110 kW + 27 kW|
|5||4400 cc/rev||-||180 cc/rev||-||110 kW|
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Kim, D.; Park, B.; Jang, J. Wind Turbine Generator Efficiency Based on Powertrain Combination and Annual Power Generation Prediction. Appl. Sci. 2018, 8, 858. https://doi.org/10.3390/app8060858
Kim D, Park B, Jang J. Wind Turbine Generator Efficiency Based on Powertrain Combination and Annual Power Generation Prediction. Applied Sciences. 2018; 8(6):858. https://doi.org/10.3390/app8060858Chicago/Turabian Style
Kim, Dongmyung, Byeongcheol Park, and Joosup Jang. 2018. "Wind Turbine Generator Efficiency Based on Powertrain Combination and Annual Power Generation Prediction" Applied Sciences 8, no. 6: 858. https://doi.org/10.3390/app8060858