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海洋潮流能发电系统的控制技术研究 被引量:11

Research of Control Technology for Tidal Current Energy Generation System
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摘要 研究变速恒频潮流能发电系统方案及其控制策略。提出一种通过寻优直流Boost变换器占空比达到对潮流能最大功率点跟踪(Maximum Power Point Tracking,MPPT)的控制算法,而不需要利用水轮机转速及其转速-功率特性。建立了并网逆变系统的数学模型,给出基于SVPWM调制的网侧控制策略。通过电流闭环控制和电网电压矢量定向控制,可进行功率因数的调整,从而实现在电网侧对有功功率和无功功率的独立控制,仿真结果表明了设计方案的正确性和可行性。 This paper proposes a variable speed constant frequency tidal current generation system and its control strategy.An MPPT(Maximum Power Point Tracking) control method is presented,in which the maximum energy capture from tidal current is achieved by seeking the optimal duty cycle of boost converter without using hydro turbine characteristic at various tidal current velocity.The mathematical model of the grid-connected inverter is built,and the SVPWM(Space Vector Pulse Width Modulation) based inverter and its control strategy for supply side is also presented.Based on the current closed-loop control and grid voltage vector oriented control,the power factor can be adjusted,which makes it possible to control the active power and reactive power independently.Simulation results demonstrate the efficiency and correctness of the proposed scheme.
出处 《电测与仪表》 北大核心 2010年第8期36-40,共5页 Electrical Measurement & Instrumentation
关键词 MPPT 逆变器 可再生能源 潮流能发电 变速恒频 MPPT inverters renewable energy tidal current energy generation variable speed constant frequency
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参考文献7

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二级参考文献24

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