The waveform factor of the volt be no high than 8% when motor runs;
电机运行时电压的波纹因数不大于8%；
This paper proposes a new concept called waveform factor, which can describe the distortion degree of optional data-window.
为了描述非全波波形畸变程度，提出了波形系数的概念。
Waveform distortion is a primary factor affecting the measure precision of steady sine standard vibration calibration system.
波形失真度是稳态正弦标准振动台计量中影响计量校准精度最主要的因素。
The results show that the SOA carrier lifetime is the main factor that produces converted waveform distortion.
结果表明，半导体光放大器的载流子寿命是导致输出波形畸变的主要因素。
Waveform distortion of super low frequency standard shaker is an important factor which influences the calibration precision.
波形失真度是影响超低频振动计量校准精度的重要因素。
Generally, the key factor which determines the output waveform quality and dynamic characteristics of UPS inverter are what kind of control method is selected and how the control law is implemented.
采用控制和实现方法是决定UPS逆变器输出波形质量和动态性能的主要因素。
In the no-load test of transformer, because of the low power factor and non-sinusoid current waveform, the high precision measurement is difficult.
变压器的空载试验中，由于功率因数低，空载电流不是正弦信号，高精度测量其有功功率具有一定的难度。
This paper describes a new method used for controlling convert power supply, which can make the input current to be sinus waveform, and the power factor to be 1.
提出一种新的整流电源控制策略，它可以使整流电源工作时，从电网输入的电流近似为正弦波，功率因素接近1。
The current response speed is proved to be faster, and the grid-connected current waveform is sine and the power factor is unity.
获得了较快的电流响应速度，实现了并网电流的正弦化和单位功率因数。
The present invention has no intermediate DC link and thus simplified circuit, low cost, less harmonic component in the voltage anc current waveform and high power factor.
本发明所设计的波形变换方法及其装置，省去了中间直流环节，使线路得以大大简化，显著降低了成本，同时使电压、电流谐波得以减小，并可获得较高的功率因数。
The present invention has no intermediate DC link and thus simplified circuit, low cost, less harmonic component in the voltage anc current waveform and high power factor.
本发明所设计的波形变换方法及其装置，省去了中间直流环节，使线路得以大大简化，显著降低了成本，同时使电压、电流谐波得以减小，并可获得较高的功率因数。
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