双桥串联顺序控制的晶闸管变流器给电网带来不容忽视的谐波危害。
The harmonic endanger was serious, which was engendered by double bridge cascade connection sequential control SCR converter.
整个系统采用双闭环控制，具有较好的谐波补偿性能。
The whole system adopts double closed loop control and has good harmonic compensation performance.
同时对波形进行了频谱分析，指出了电压谐波成分对双馈电机稳态性能的影响情况。
At the same time the paper analyses the frequency spectrum of the wave from, and indicates the influence of voltage harmonic wave component on the steady state performance.
介绍一种用于双顶置凸轮轴式发动机的采用两级谐波传动的新型进气凸轮轴调相机构。
A new camshaft-phasing mechanism with twin harmonic drives is described and illustrated, which can be adopted to DOHC (double overhead camshaft) engines.
文中给出了按照面积中心等效法合成SPWM波形的机理以及面积中心等效算法，并对双极性面积中心等效法生成的SPWM波形进行了谐波分析。
The paper puts forward the mechanism of combined waveform and computation of a SPWM area center equivalent. Harmonic of double pole SPWM waveform is analyzed in this paper.
本文对双馈发电机的控制机理、稳定性和谐波成分建立简单的数学模型，进行了一定的分析。
This thesis builds a simple mathematical model for the controllable principle, transient stability and harmonic waves of the DFIG, and analyses them.
通过对半控双三相12脉冲整流器的电流波形分析和傅立叶级数展开，得出系统的主要谐波成分。
Through analysis of the current waveform of the semi-control double three-phase 12-pulse rectifier and the expansion of Fourier series, the main harmonic components of the system were obtained.
该合成器采用谐波锁相和双反馈锁相技术，性能优良。
The synthesizer has a good performance thanks to harmonic phase locking technology and double feedback phase locking technology.
实验表明，作为双馈感应发电机转子励磁电源的三相pwm变换器具有功率因数高、网侧电流谐波小、能量双向流等优点。
Experimental results show that three-phase PWM converters are advantageous in high power factor, small input-line current harmonic distortion and bi-directional power flow.
谐波螺旋式阀门采用双波谐波螺旋传动，实现由圆周运动向直线运动的转化，实现阀门的启闭。
The harmonic screw type valve is driven by the double wave harmonic screw. It can transform circle movement to line movement for the closing and opening of the valve.
理论分析和实验表明，基于双闭环重复控制的并网逆变器具有较高的输出电能质量和较低的并网电流谐波畸变率。
Theoretical analysis and experimental results verify that the dual closed loop repetitive control based inverter has high output energy quality and low THD of grid-connected current.
给出了利用高阶谐波的双正交性。用带源修正的源迭代方法求高阶谐波的具体流程和公式。
Based on the hi-orthogonality of the higher order harmonics, the process and formulas for higher order harmonics calculation are derived via the source iteration method with source correction.
发现由于双色场的相干效应， 在其谐波谱中不仅产生了奇次谐波，还产生了偶次谐波和半整数次谐波。
It is found that there exist odd harmonics, even harmonics and semi-integer harmonics due to the coherent interaction between two colors.
通过谐波抑制效果，可见双级饱和可控电抗器的总谐波含量明显低于单级饱和可控电抗器。
By the harnonic suppression results, we can see that the total harnonic components of the two-stage reactor is obviously lower than single stage one.
通过谐波抑制效果，可见双级饱和可控电抗器的总谐波含量明显低于单级饱和可控电抗器。
By the harnonic suppression results, we can see that the total harnonic components of the two-stage reactor is obviously lower than single stage one.
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