지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.3
- 수록면
- 271 - 281 (11page)
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초록· 키워드
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Fluctuating wind conditions necessitate the use of a variable speed wind turbine (VSWT) with a AC/DC/AC converter scheme in order to harvest the maximum power from the wind and to decouple the synchronous generator voltage and frequency from the grid voltage and frequency. In this paper, a combination of a three phase diode bridge rectifier (DBR) and a modified topology of the diode clamped multilevel inverter (DCMLI) has been considered as an AC/DC/AC converter. A control strategy has been proposed for the DCMLI to achieve the objective of grid interface of a wind power system together with local load compensation. A novel fixed frequency current control method is proposed for the DCMLI based on the level shifted multi carrier PWM for achieving the required control objectives with equal and uniform switching frequency operation for better control and thermal management with the modified DCMLI. The condition of the controller gain is derived to ensure the operation of the DCMLI at the fixed frequency of the carrier. The converter current injected into the distribution grid is controlled in accordance with the wind power availability. In addition, load compensation is performed as an added facility in order to free the source currents being fed from the grid of harmonic distortion, unbalance and a low power factor even though the load may be unbalanced, non-linear and of a poor power factor. The results are validated using PSCAD/EMTDC simulation studies.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. SPEED AND POWER RELATIONS OF A WIND TURBINE
Ⅲ. WIND ENERGY INTERFACE TO THE GRID USING A VSI IN THE CURRENT CONTROL MODE
Ⅳ. CAPACITOR VOLTAGE BALANCING STRATEGY
Ⅴ. MODELING AND CONTROL OF A DCMLI USING THE PROPOSED FIXED SWITCHING FREQUENCYCURRENT CONTROL METHOD
Ⅵ. CURRENT GENERATION ALGORITHM FOR THREE-PHASE SYSTEMS
Ⅶ. SIMULATION RESULTS
Ⅷ. CONCLUSIONS
REFERENCES
참고문헌 (22)
참고문헌 신청
1. [학술지(정기간행물)] - G. Todeschini / 2010 / Wind energy conversion systems as active filters : design and comparison of three control methods / IET Renewable Power Generation 4 : 341 ~ 353
2. [학술지(정기간행물)] - A. H. Kasem / 2010 / Power ramp rate control and flicker mitigation for directly connected wind turbines / IET Renewable Power Generation 4 (3) : 261 ~ 271
3. [학술대회논문] - A. Chen / 2004 / A novel type of combined multilevel converter topologies / 30th Annual conf. of IEEE
4. [학술지(정기간행물)] - M. K. Mishra / 2003 / Control schemes for equalization of capacitor voltages in neutral clamped shunt compensator / IEEE Trans. Power Del 18 (2) : 538 ~ 544
5. [학술지(정기간행물)] - A. Shukla / 2008 / Control schemes for DC capacitor voltages equalization in diode-clamped multilevel inverter-based DSTATCOM / IEEE Trans. Power Del 23 : 1139 ~ 1149
2. [학술지(정기간행물)] - A. H. Kasem / 2010 / Power ramp rate control and flicker mitigation for directly connected wind turbines / IET Renewable Power Generation 4 (3) : 261 ~ 271
3. [학술대회논문] - A. Chen / 2004 / A novel type of combined multilevel converter topologies / 30th Annual conf. of IEEE
4. [학술지(정기간행물)] - M. K. Mishra / 2003 / Control schemes for equalization of capacitor voltages in neutral clamped shunt compensator / IEEE Trans. Power Del 18 (2) : 538 ~ 544
5. [학술지(정기간행물)] - A. Shukla / 2008 / Control schemes for DC capacitor voltages equalization in diode-clamped multilevel inverter-based DSTATCOM / IEEE Trans. Power Del 23 : 1139 ~ 1149
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