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voltage fluctuating
相关语句
  电压波动
    The power quality include frequency, harmonic wave, voltage deviation, voltage dip and rising, voltage fluctuating and flashing, unbalance of three kinds of voltage and voltage's changing.
    电能质量包括频率、谐波、电压偏差、电压跌落与上升,电压波动与闪变、三相电压不平衡度和电压瞬变。
短句来源
    It has been demonstrated that the astable oscilla-tor is able to meet the requirements of high speed spinning machine for frequency. Asthe supply voltage fluctuating at ±10% and the ambient temperature varying between15℃—35℃,its variation of frequency does not exceed 0.3%.
    实用表明已能满足高速纺丝机对电源频率精度的要求:当电网电压波动±10%,室温有±10℃变化(室温25℃)时,频率变化不超过0.3%。
短句来源
    The influence on APF caused by the voltage fluctuating is analyzed,and also proposes a voltage feed-forward control method to effectively restrain the influence on APF caused by the voltage fluctuating.
    针对电网电压波动对有源滤波器工作性能的影响进行了具体的分析,并提出了利用电网电压前馈的控制方式来有效地抑制电网电压波动对APF的影响。
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Silicon control rectifier converter used in high speed synthetic fiber spinningmachine needs a high accuracy for frequency,which is determined by the pulse oscilla-tor.The astable oscillator described here has the feature of simple construction,highaccuracy of frequency,stability,etc.It has been demonstrated that the astable oscilla-tor is able to meet the requirements of high speed spinning machine for frequency.Asthe supply voltage fluctuating at ±10% and the ambient temperature varying between15℃—35℃,its...

Silicon control rectifier converter used in high speed synthetic fiber spinningmachine needs a high accuracy for frequency,which is determined by the pulse oscilla-tor.The astable oscillator described here has the feature of simple construction,highaccuracy of frequency,stability,etc.It has been demonstrated that the astable oscilla-tor is able to meet the requirements of high speed spinning machine for frequency.Asthe supply voltage fluctuating at ±10% and the ambient temperature varying between15℃—35℃,its variation of frequency does not exceed 0.3%.

高速纺丝机用的可控硅变频电源对频率精度要求较高,而频率精度是由脉冲振荡器决定的。本文介绍的多谐振荡器具有结构简单、频率精度高和稳定性好等优点。实用表明已能满足高速纺丝机对电源频率精度的要求:当电网电压波动±10%,室温有±10℃变化(室温25℃)时,频率变化不超过0.3%。

The researched power net auxiliary circuit adopts multi point auxiliary method, under the condition of power net voltage fluctuate heavily and the control angle of crystal flashboard tube alternate much, it can maintain the steady output voltage of rectifying power and guarantee the welding quality.

所研究的网压补偿电路通过采用多点补偿的方式 ,在电网电压波动较大 ,同时晶闸管的控制角变化范围也较大的条件下 ,能保持整流电源输出电压的稳定 ,从而保证了焊接质量。

Unified Power Flow Controller(UPFC) is a kind of FACTS controllers with great potential and is a new hot topic of Power System research.This paper establishes a dynamic model of UPFC using switch function,taking into consideration voltage fluctuate of capacitance.Using the technology of SVPWM and the idea of coordinate transformation,an uncoupling control strategy is proposed.

统一潮流控制器(UPFC)是柔性交流输电系统(FACTS)控制器中极具发展潜力的一种,也是电力系统研究领域中新的热点.利用开关函数模型法,考虑直流电容上的电压波动,建立了UPFC的动态模型;利用空间电压矢量控制技术和坐标变换思想,给出了一种解耦控制策略.为UPFC控制装置的实现,奠定了一定的理论基础.

 
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