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- power frequency inverter 工频逆变电源
- Impact in power frequency variation. 频率变化之影响。
- Experience in frequency inverter, motor ,MCC, instrumentation. 熟悉变频器;电机;MCC;仪表等现场设备.
- Y. Hatanaka, “Zero-Current-Switching High Frequency Inverter With Constant Frequency Power Control,” Power Conversion Conference, Yokohama, No. 19-21, Apr. 1993, pp. 265-270. 黄少崴，“新型零电流切换脉波宽度调变蓄电池充电器”，昆山科技大学电机工程系硕士论文，2005年。
- Adopt multi-function digital frequency inverter, and stepless variable speed. 采用多功能数显变频器，无级变速；
- Frequency inverter is a kind of circuit that uses power electronic device to change AC from 50Hz to other frequencies and includes AC/AC and AC/DC/AC types. 变频是指利用电力电子器件将50Hz的交流电变换为用户所要求频率的交流电，它分为直接变频(交-交变频)和间接变频(交-直-交变频)。
- medium frequency inverter power suppy 中频逆变电源
- This paper mainly explicates the high frequency inverter circuit and its features and deliberates the question of how to prevent the short circuit of inverter. 主要阐述了高频逆变电路及其特点，以及防止高频逆变桥短路的方法。
- The disconnector shall operator at the power frequency short circuit while MOA's failure under the abnormal conditions. 避雷器带脱离的目的是当避雷器在异常情况下发生故障损坏时，工频短路电流使脱离器工作，脱离器接地端自动脱开，使故障的避雷器与系统脱离，并表明故障避雷器更换。
- A review on the study on power frequency electromagnetic field hazards to organisms. 工频电磁场生理危害的研究进展。
- The New Techniques Development of High Voltage High Power Frequency Converter of ABB Co. ABB高压大功率变频器的最新技术发展
- When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable. 万一变频器出现故障时，可工频驱动，转速不可调。
- It is pointed out that the power frequency electromagnetic field is inductive field,but not radiation field. 对输变电工程工频电磁场、无线电干扰进行了理论分析,指出输变电工程工频电磁场是感应场,而非辐射场。
- A half-bridge bi-directional current mode high frequency inverter was proposed, and the problem of unequal voltage of capacitance in this circuit can be resolved by adding a balance coil. 提出了半桥双向电流源高频链逆变器的拓扑结构，并对电路固有的电容电压不平衡问题提出了解决方法，采用平衡绕组可以彻底解决电容电压不平衡。
- HWH middle frequence inverter,controller and PQS process monitoring system for resistance welding. 德国HWH公司中频电阻焊变频机，控制器，PQS 智能焊接质量检测系统。
- The average EEG(AEEG) increased while the average mean power frequency (MPF) and comprexity of EEG decreased in muscle fatigue. 肌肉疲劳过程中平均脑电值(AEEG)均值增加,平均功率频率值(MPF)和脑电信号复杂度[C(n)]均值下降,该现象广泛分布于整个大脑皮层;
- This paper introduces the application of the programmable controller,the direct current velocity modulation system,the frequency inverter and the electronic cam switch in chamfering machine. 介绍可编程控制器、直流调速系统、变频器、电子凸轮开关在倒棱机中的应用。
- Review neutral line potential shift protecto,rdepict mostly index of power frequency overvoltage 、 undervoltage and electric surge protection. 通过对中性线电位偏移保护器的回顾,简述了中性线电位保护器的设计思想和工频过、欠电压保护的主要指标。
- The principle of arc-suppression coil with three phases and five columns,and theory of power frequency extinguishing arcing were introduced. 介绍了三相五柱式消弧线圈的工作原理,单相电弧接地过电压的工频熄弧理论。
- For three-phase AC power supply systems and locomotive converter complex and electric locomotives gradually tend to adopt a one-way AC power frequency. 因三相交流供电系统和机车变流装置复杂，电力机车逐渐趋向采用工频单向交流电。
