Force commutated high power electronics

强制换向高功率电子器件

• 批准号: 7783-2006
• 负责人: Ooi, BoonTeck
• 金额: $ 3.36万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=389588
• 关键词: Force; commutated; power; electronics

SUMMARY Over the years, the applicant has laid theoretical foundations showing that: (1) Forced (or Self) Commutated Converters under Sinusoidal Pulse Width Modulation (SPWM) operate as linear amplifiers; (2) the modulation bandwidth should be less that 1/3 the carrier frequency. Next in line for theoretical review is the popular Space-Vector Modulation (SV-PWM). Linearity is valid only for constant dc voltage, otherwise the converter is nonlinear. Recently, the applicant has applied Nonlinear Theory to apply pole-placement to improve dynamic characteristics. This simulation success will be capitalized on to realize experimental implementations. On the engineering side, the applicant has developed controllers in the PWM-family of Flexible AC Transmission Systems (FACTS) and High Voltage DC (HVDC. Continuing research is directed to: deploying the inherent voltage support and independent P-Q control as added values; incorporating multi-functions such as SSSC into a HVDC station; reducing cost by incorporating dielectric capacitors in series compensation. The research proposal carries 2 new initiatives. The first is to study how FACTS and HVDC controllers can partition large interconnected power systems into their original smaller, stronger units. The problem of very low frequency instability will be the starting point in this research.This research will use HYPERSIM, Hydro-Quebec's parallel computation system and power system simulation software. The second initiative continues the research on doubly-fed induction generator for wind energy research and brings it to a close in variable-speed ac drives. This 5 year proposal fields 5 projects  which will be train 3 researchers every year. In all, it will train 6 to 8 researchers in the Master or Ph.D level.

发明内容多年来，申请人已经奠定了理论基础，表明：(1)正弦脉宽调制(SPWM)下的强制(或自)换向变换器作为线性放大器运行。 (2) 调制带宽应小于载波频率的1/3。接下来进行理论回顾的是流行的空间矢量调制 (SV-PWM)。线性仅对恒定直流电压有效，否则转换器是非线性的。最近，申请人应用非线性理论来应用极点配置来改善动态特性。这一模拟的成功将被用来实现实验性的实施。在工程方面，申请人开发了灵活交流输电系统（FACTS）和高压直流（HVDC）的PWM系列控制器。继续研究的方向是：部署固有电压支持和独立P-Q控制作为附加值；将SSSC等多功能纳入HVDC站；通过在串联补偿中加入介电电容器来降低成本。该研究提案载有 2项新举措。第一个是研究 FACTS 和 HVDC 控制器如何将大型互连电力系统划分为更小、更强的原始单元。极低频不稳定问题将是本研究的出发点。本研究将使用HYPERSIM、魁北克水电公司的并行计算系统和电力系统仿真软件。第二项举措继续开展风能双馈感应发电机的研究，并于2019年结束。 变速交流驱动器。这个为期 5 年的提案涉及 5 个项目，每年将培训 3 名研究人员。总共将培养6至8名硕士或博士级别的研究人员。