空心杯电机无位置传感器控制研究

来源 :2007台达电力电子新技术研讨会 | 被引量 : 0次 | 上传用户:roath
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
本文在仿真分析的基础上,提出了一种新的反电势换相方法,仿真结果证明该方法能使空心杯电机输出更大的电磁功率、更小的转矩脉动.
其他文献
Groundwater overdraft threatens the future of irrigated agriculture in the North China Plain.Because irrigated winter wheat is the dominant user of extracted groundwater, improved understanding of wat
Isotope ratio infrared spectroscopy (IRIS) provides an in situ technique for measuring δ13C in atmospheric CO2.A number of methods have been proposed for calibrating the IRIS measurements, but few stu
会议
Chemical N input is essential for high rice yields.However, low recovery efficiency of chemical fertilizer N with flooding irrigation in the anthropogenic-alluvial soil resulted in N lost from the ric
Plants can directly absorb intact amino acid molecules.However, it has not been widely accepted that amino acids can be readily adsorbed to the soil solid phase and that the adsorbed amino acids quant
Niche partitioning by time, space and chemical forms has been suggested as an important mechanism to maintain species coexistence.Climate warming is assumed to increase soil nutrient availability thro
氮气和/或氧化亚氮在沉积物中通过反硝化、厌氧氨氧化或是硝化产生.这些过程错综复杂,使人们无法准确估算每个生化过程单独产生气态氮的速率.近年来,经典的同位素配对技术(IPT),即最常用的添加15N-NO3-以定量反硝化的方法,在本文中,作者对上述方法进行了改进.作者安装了低温捕集器对N2和N2O进行预浓缩,从而同时测得一个样品产生的两种气态产物.对N2(核质比:m/z=28,m/z=29及m/z=3
1.Plant-microbe competition for available nitrogen (N) has been suggested to be an important mechanism controlling N limitation of plants in a variety of ecosystems.However, spatio-temporal patterns o
Power system architecture for servers with backup power based on HV DC bus concept, to improve power density and efficiency on system level, are researched.System behaviors and design considerations o
会议
本文分析了飞轮储能系统易发生的四种电气故障,提出了改进的各相电流独立控制的容错拓扑.对比传统的电机中性点与逆变器直流端中点相连的容错拓扑,改进的拓扑在发生驱动电机绕组开路故障或逆变器器件单管发生开路、短路故障的情况下,系统仍能持续稳定地运行.本文对提出的容错拓扑及控制策略做了详细分析并给出仿真结果.
首次提出了Boost型高频环节AC-AC变换器电路结构与拓扑族,它是由储能电感、输入周波变换器、高频变压器、输出周波变换器以及输入、输出滤波器构成.深入分柝研究了这类变换器的稳态原理特性与移相控制策略,提出并有效地解决了变换器的若干关键问题.以全桥桥式电路拓扑为例,进行了这类变换器的仿真和原理试验.研究结果表明,这类变换器具有高频电气隔离、电路拓扑简洁、两级功率变换(LFAC-HFAC-LFAC)