Novel Drivetrains for Wind Turbines with Geared Infinitely-variable Speed Converters and Variable Electromotive-force Generators

带有齿轮无级变速转换器和可变电动势发电机的风力涡轮机的新型传动系统

• 批准号: 1335397
• 负责人: Weidong Zhu
• 金额: $ 25万
• 依托单位: University of Maryland Baltimore County
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1335397&HistoricalAwards=false
• 关键词: Novel; Drivetrains; Wind; Turbines; Geared

The objective of this project is to theoretically and experimentally investigate novel drivetrains for wind turbines with infinitely variable speed converters (IVSCs) and variable electromotive-force generators (VEGs), which can reduce failures, cost, and power loss; harvest more wind power; and reduce the cost of wind energy. By mechanically converting a variable wind input speed to a constant output speed using an IVSC, which is an all-mechanical gear train with minimal speed variation, one can generate grid-compatible constant-frequency power without using a power converter. A novel concept of an eccentric motion system that differs from all other continuously variable transmissions will be investigated. Two new concepts of VEGs are investigated: a generator with an adjustable overlap between the rotor and the stator and a multiple-generator configuration. The proposed research integrates various subjects including kinematics, dynamics, control, and electromagnetics. New control theories and laws will be developed for IVSCs and VEGs and implemented. Using an all-mechanical speed converter can generate cost savings from simpler assembly and lower maintenance. Besides wind energy generation, the new knowledge generated from this research can be used to develop water turbines to harvest current and tidal energy; new transmissions and VEGs for cars, trucks, military vehicles, and ships; motion controls for airplanes and construction machines; and energy harvesting devices for ocean wave energy and vibration energy from railway tracks. Various aspects of the proposed research will be adapted for educational purposes to students at all levels, from high school students to Ph.D. students. The infinitely variable motion control and energy harvesting concepts will be demonstrated to underserved high school students in a summer educational program to spark their interest in science and engineering and to expose them to engineering research. Students in different disciplines will be involved in different aspects of wind energy research; research results will be showcased at wind energy forums to arouse public awareness of clean energy.

该项目的目的是从理论上和实验上研究具有无级变速转换器（IVSCs）和可变电动电发电机（VEGs）的风力涡轮机的新型传动系统，以减少故障、成本和功率损失；收获更多的风能；并降低风能的成本。通过使用IVSC（一种具有最小速度变化的全机械齿轮传动系统）将可变风速机械地转换为恒定输出速度，可以在不使用电源转换器的情况下产生与电网兼容的恒频电力。一个新的概念偏心运动系统，不同于所有其他的无级变速传动将进行研究。研究了两个新概念：转子和定子之间可调节重叠的发电机和多发电机配置。本研究整合了运动学、动力学、控制学和电磁学等多个学科。将为ivsc和vegg开发并实施新的控制理论和规律。使用全机械速度转换器可以从更简单的组装和更低的维护中节省成本。除了风能发电，这项研究产生的新知识还可以用于开发水轮机来收集水流和潮汐能；汽车、卡车、军用车辆和船舶的新型变速器和蔬菜；用于飞机和工程机械的运动控制；以及海浪能和铁路轨道振动能的能量收集装置。建议研究的各个方面将适用于从高中生到博士生的各级学生的教育目的。无限可变运动控制和能量收集概念将在夏季教育计划中向缺乏服务的高中生展示，以激发他们对科学和工程的兴趣，并使他们接触工程研究。不同学科的学生将参与风能研究的不同方面；研究成果将在风能论坛上展示，以唤起公众对清洁能源的认识。