说明：双击或选中下面任意单词，将显示该词的音标、读音、翻译等；选中中文或多个词，将显示翻译。 您的位置：首页 -> 词典 -> 波形畸变率 1)  THD 波形畸变率 1. Traditional analytic solution is difficult to consider the influence of the damper circuit ,tooth-slot effect ,winding distribution on waveform, so the finite element method coupled circuit in time domain is employed in this paper to analyze voltage and current waveforms, and calculate line-voltage THD of straight generator. 传统的解析算法难以综合考虑发电机阻尼回路、齿槽效应、绕组分布对波形的影响,为此文中提出用二维时变场有限元和外电路耦合的方法分析发电机电压和电流波形,计算了直槽发电机线电势的波形畸变率,该方法对于准确预测发电机-整流系统性能、合理配置滤波装置有着十分重要的意义。 2)  waveform deviation factor 波形畸变率 1. According to two conditions of considering damper winding or not, the waveform deviation factor is obtained. 本文针对电力发生器———一种新型高压发电机 ,采用有限元数值解法 ,对其样机空载电势波形进行了分析 ,针对不考虑阻尼绕组影响和考虑阻尼绕组影响两种情况 ,求取了空载波形畸变率。 2. On the basis of these theories, the no-loading EMF of powerformer is analyzed and the no-loading waveform deviation factor is taken out, in the conditions of considering the influence of damping winding and not considering it. 在这些理论基础之上，分析了考虑阻尼绕组影响与不考虑阻尼绕组影响两种情况下电力发生器的空载感应电势，求取了空载电势波形畸变率。 3)  EMF waveform deriation ratio 电势波形畸变率 1. The no load EMF waveform deriation ratio of the salient pole synchronous generator is one of its important technical data and depends mainly on the waveform of the no load air gapmagnetic field, which is seriously influenced by many complex factors and is difficult to calculate. 凸极同步发电机空载电势波形畸变率是衡量发电机性能的重要指标，主要取决于它的气隙磁场，后者受到诸多因素的影响，计算十分复杂。 4)  total harmonics distortion (THD) 波形畸变率(THD) 5)  Waveform distortion 波形畸变 1. A new parameter for evaluating waveform distortion of partial discharge signals after de-noising 一种用于评价PD信号去噪前后波形畸变的新参数 2. The causes and influences of the waveform distortion of the waveform distortion of an inverter with nonlinear load are analyzed. 分析了逆变器带非线性负载时波形畸变的原因和影响 ,将波形畸变分成瞬态畸变和稳态畸变 ,并针对不同畸变给出了几种不同的控制方式 ,即根据非线性负载投入瞬间的冲击电流大小 ,采用自适应调节输出电压幅值的限流方法 ,以改善瞬态畸变程度 ;采用瞬时值波形反馈、无差拍控制技术来补偿稳态畸变波形 。 3. Present theoretical computing method and synohronous sampling computing method of electric equilibrium parameters for waveform distortion system. 介绍了波形畸变系统电平衡参数的理论计算方法和同步采样测量方法，并对这些方法进行了深入的分析和研究。 6)  wave form distortion 波形畸变 1. The peper systematically analysed the cause of wave form distortion of output voltage in inverse (DC/AC) change circuit and its condition of harmonic and approached the method of eliminating harmonic. 本文系统地分析了逆变电路输出电压的波形畸变原因及谐波状况,并对抑抑谐波的言法进行探讨。 2. As the strain amplitude increased,no→obvious→decreasing even obsolescent wave form distortion in sequence were observed,which showed that stick→weak slip→stick/slip→strong/full slip even unsteady flow occurred between the melt and the wall. 随应变幅值增加,依次观察到没有波形畸变→明显的波形畸变→波形畸变减弱直至消失,对应着熔体与壁面之间的粘附→弱滑移→粘附/滑移→强滑移。 补充资料：总谐波畸变率 总谐波畸变率 total harmonic distortion,THD 　　Z。日gXle匕。Jlbionl.总谐波畸变率(total harmoniedistortion，THD)非正弦周期性交变量的各次谐波含有率的平方和的平方根值，简称畸变率。它是非正弦周期性波形的一个重要数字特征量，用以衡量波形畸变的程度。许多国家规定，低压电力网供电电压的总谐波畸变率不得超过5%。通常认为符合这种标准的工业用电的电压波形是工业的正弦波形。- 以电压畸变波形为例，其总谐波畸变率的定义是THD-{合广一认\a^·‘Z夕1 100;;}羚，V岌戈Ul)式中口。为第n次谐波电压的有效值，、)乙口，为基波电压的方均根值，但也常用额定电压U代替Ul。　　 说明：补充资料仅用于学习参考，请勿用于其它任何用途。 参考词条 ©2011 dictall.com