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- In this thesis, ac-to-dc and dc-to-ac power converters are proposed to convert the three-phase varying voltage and frequency PMSG power to single-phase source with constant voltage and frequency. 本系统采用交流-直流-交流功率转换器,将风力发电所产生之变动电压及频率转换为固定电压及频率之单相电源。
- Luminaire shall only be used with rated voltage and frequency. 灯具应该在额定功率和频率下使用。
- The luminaire shall only be used with rated voltage and frequency. 此灯具仅仅在额定电压和频率上使用。
- Constant voltage and frequency 恒压恒频
- This paper introduces a simple, reliable AC power supply with constant voltage and frequency. The supply consists of a DC motor-AC generator set, a automatic voltage regulator (AYR), and a automatic frequency regulator (AFR). 本文介绍一种简单可靠的恒压恒频交流电源装置;它由直流电动机-交流发电机组、自动电压调节器AVR及自动频率调节器AFR组成.
- In addition, the dependence of BTI on channel length is extensively investigated under constant voltage and field stress. 另一方面,负偏压温度不稳定性受应力之影响而产生劣化现象。
- The porous alumina film prepared by anodization of aluminum in chromic acid under constant voltage and direct current can absorb infared wave. 在铬酸中采用直流恒压铝阳极氧化法制备氧化铝多孔膜,经测试这种多孔膜具有红外吸波性能。
- constant voltage and constant frequency power 稳压稳频电源
- constant voltage and constant frequency 稳压稳频电源
- The calculated kinetic curve is better fit at the beginning of EPD to the experimental curve plotted under the condition of constant voltage and constant concentration of HAP. 利用此关系式和恒压一等浓度条件下不同时间所对应的电流强度的数据,拟合出恒压一等浓度条件下沉积量与时间之间的关系曲线,此曲线与实验所得的曲线在沉积初期符合的程度比较好。
- Please look at the readings of voltage and frequency on the main switchboard to see if they are normal. 请你看看主配电板上电压、频率的数值是准确。
- At first, the generator to be set at 75% load (p.f = 1.0) and adjusted to the rated voltage and frequency. 先将发电机加载至75%25负荷(功率因数=1.;0),然后将电压、频率调至额定值。
- Power conditioning is used to minimize voltage and frequency variations in an external power. 电源调节用来最小化外部电源的电压变化和频率变化。
- The frequency changer set is adopted to providing test power, which regulates the electric voltage and frequency. 通过采用变频机组提供试验电源,实现电源电压与频率的调节。
- Constant voltage and current, antioxidize case:Insure flux quality accordantly in condition of instable power and air pressure;Soldering paste density without change after long time work. 恒压恒流,防氧化箱:在电源气压不稳定的情况下确保喷雾量一致;助焊剂在长时间的使用保持浓度无变化。
- Automatic governing test of voltage and frequency for main generator (emergency generator). 主发电机(应急发电机)电压、频率自动调节试验。
- Telemeter the input/output voltage and frequency of UPS,load,battery capacity which will be shown appropriately on PC machine. 遥测UPS的输入、输出电压和频率、负载大小、电池容量,并适时显示在PC机上。
- Results were presented showing the effect of current and frepuency on the shape of meniscus and the effect of voltage and frequency on the current. 考察了电压和频率对系统电流的影响规律。
- Voltage and frequency generated by synchronous generator vary along with the wind variation, so the power must be dealt with before it is applied to grid. 同步直驱风力发电系统的定子电压和频率随风速的变化而变化,需要经过一系列控制电路的调整才能并网。
- Interference sources of electromagnetic flow meter mainly include electromagnetic interference, electrochemistry noise and power source voltage and frequency fluctuations. 电磁流量计的干扰源主要包括工频电磁干扰、流体电化学干扰噪声和电源干扰噪声。