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基于模块化多电平变流器的轻型直流输电系统 被引量:209

VSC-HVDC System Based on Modular Multilevel Converters
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摘要 对一种新型的模块化多电平变流器(MMC)在轻型直流输电系统(VSC-HVDC)中的应用进行了研究。首先建立了MMC系统的数学模型,提出了适用于MMC系统的快速脉宽调制控制方法、模块电容电压平衡控制策略以及降低器件开关频率的方法。对于系统级控制,提出了基于MMC的VSC-HVDC输电系统非线性控制器,包括有功功率和无功功率解耦控制器,以及直流侧电压控制器。通过PSCAD/EMTDC仿真软件对所提出的模型和控制方法进行了验证,证实了其可行性和有效性。 This paper researches the application of a novel MMC in the VSC-HVDC system.First,the mathematic model of MMC system is established.Then fast PWM control for MMC system,the balance control for the DC voltages of modules,and methods to reduce switching frequency are proposed.As the system-level control,the nonlinear controller for VSC-HVDC system based on MMCs is designed.It includes decoupling control of active power and reactive power,and the constant DC voltage control.By simulation with software PSCAD/EMTDC,the feasibility and effectiveness of the proposed model and control are verified.
机构地区 清华大学电机系
出处 《电力系统自动化》 EI CSCD 北大核心 2010年第2期53-58,共6页 Automation of Electric Power Systems
基金 台达电力电子科教发展基金资助项目(DERO2007009)~~
关键词 轻型直流输电 模块化多电平变流器 脉宽调制 直流电压平衡控制 非线性控制器 voltage source converter based high voltage direct current(VSC-HVDC) modular multilevel converter(MMC) pulse width modulation(PWM) DC voltage balance control nonlinear controller
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参考文献10

  • 1WEIMERS L. HVDC light: a new technology for a better environment. Power Engineering Review, 1998, 18(8): 19-20.
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二级参考文献6

  • 1[1]Szuki Hirokazu, Aajima Tatsuhito. Development and Testing of Prototype Models for A High-performance 300 MW Self-commuted AC/DC Converter. IEEE Trans on Power Delivery, 1997, 12(4): 1589~1597
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