1) total harmonics distortion (THD)
波形畸变率(THD)
2) total harmonic distortion (THD)
谐波畸变率(THD)
3) total harmonic distortion
THD(谐波畸变率)
4) 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。
5) 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。
6) 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。
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