潮汐能是一種可預(yù)測的可再生能源,潮汐電站并入直流電網(wǎng)的方案對于全水下的功率變換系統(tǒng)更具優(yōu)勢。本研究的主要目的是提出一種適用于潮汐發(fā)電系統(tǒng)的多端口 DC-DC轉(zhuǎn)換器,該系統(tǒng)用于收集多端口潮汐驅(qū)動功率,并將收集到的電能轉(zhuǎn)換并傳輸?shù)?0kV直流配電網(wǎng)絡(luò)中去。文獻(xiàn)綜述回顧了用于匯流的多端口 DC-DC轉(zhuǎn)換器和直流微電網(wǎng)的技術(shù)發(fā)展?fàn)顩r,提出了一種適用于潮汐發(fā)電系統(tǒng)的多端口功率變換器。低速潮汐發(fā)電機(jī)的輸出經(jīng)過整流后將直流電通過短距離直流海纜送至直流匯流站,所提出的匯流站中的變換器由多個電流源逆變器(CSI),500Hz變壓器和一個7電平輸入模塊化多電平轉(zhuǎn)換器(MMC)組成;本文分別提出了移相式和脈寬調(diào)制式的能量傳輸調(diào)制方法,在多輸入直流端口和中壓直流母線之間傳遞能量,仿真證明提出的拓?fù)浜鸵葡嗄芰總鬏敺椒ǹ梢愿咝R流多發(fā)電機(jī)功率,可以成為水下潮汐發(fā)電的可選方案之一。

【文章頁數(shù)】：93 頁

【學(xué)位級別】：碩士

【文章目錄】：
ABSTRACT
摘要
ABBREVIATIONS
CHAPTER 1 INTRODUCTION
    1.1 BACKGROUND ON ELECTRICITY POWER SYSTEMS AND RENEWABLE ENERGY RESOURCES
    1.2 TIDAL BASED RENEWABLE ENERGY DEVELOPMENT
    1.3 DC DISTRIBUTION GRIDS
    1.4 STATE OF THE ART OF DC-DC CONVERTERS FOR DC GRIDS
    1.5 THESIS ORGANIZATION
CHAPTER 2 TIDAL POWER SYSTEMS
    2.1 TIDAL POWER SYSTEM
    2.2 PROPOSED TIDAL POWER SYSTEM AND ITS COMPONENTS
    2.3 POWER GENERATION FROM TIDES
    2.4 TURBINE-PMSG SIMULATION RESULTS
    2.5 MODELING OF DC TRANSMISSION LINES
    2.6 TRANSFORMER DESIGN
CHAPTER 3 POWER TRANSFER AND CONTROL
    3.1 POWER TRANSFER CONVERTER MODELS
    3.2 PROPOSED DC-DC MULTI PORT CONVERTER
    3.3 OPERATION PRINCIPLES OF THE MMC
    3.4 MMC SIMULATION RESULTS
    3.5 SIMULATION OF THE PRPOSED PHASE SHIFITING METHOD (SINGLETURBINE CASE)
    3.6 SIMULATION OF THE PROPOSED PHASE SHIFITING METHOD (MULTITURBINE CASE)
    3.7 SIMULATION OF THE PROPOSED DUTY CYCLE VARIATION METHOD(SINGLE TURBINE CASE)
    3.8 SIMULATION OF THE PRPOSED DUTY CYCLE VARIATION METHOD(MULTI TURBINE CASE)
    3.9 RESULTS AND ANALYSIS
CHAPTER 4 CONCLUSION AND FUTURE WORK
    4.1 CONCLUSION
    4.2 FUTURE WORKS
REFERENCES
ACKNOWLEDGEMENT



本文編號：4036054