Research of System Design and Simulation on High Power Factor Rectifier 高功率因数整流器系统设计与仿真研究
Research on Economic Power Supply Radius and Power Factor of Rural Power Network 农村电网经济供电半径和经济功率因数的研究
Line, bypass and power factor correction contactor coils can be directly controlled. 可直接控制线路、旁通和功率因素校正接触器线圈。
The reason of the low power factor in the switching mode power supply and the influence for the electrical network are analysed. 分析了开关电源功率因数低的原因及对电网的影响,在此基础上,设计了一种有源功率因数校正电路。
Automatic power factor adjustment. 功率因数自动调节功能。
By analyzing the conventional power factor measurement methods, a new measurement method of power factor based on DSP technology is proposed. 在分析与总结了传统功率因数测量方法的基础上,提出了基于数字信号处理(DSP)技术的功率因数测量方法。
In the IGBT converter, control system, Power factor and PWM vector control technology is adopted, it is to ensure the power factor of the power supply to be1. 大容量IGBT整流器采用三电平PWM控制,应用调整载波相位配合等技术有效降低了谐波对电网的影响;采用高功率因数矢量控制技术,保证了网侧输入功率因数达到1。
Principle and class of active power factor correction ( APFC) are introduced. 主要介绍了有源功率因数校正(APFC)的工作原理、电路分类。
A novel three-phase power factor correction with double frequency is proposed in this paper. 文中提出了一种新型的双频三相全桥功率因数校正器拓扑结构。
It has a power factor of near 1, and decreases the harmonics interference to the lowest level. 在电力牵引时其功率因数接近于1,并可将谐波干扰降低到最低限度;
One novel method for working out the economic power supply radius and power factor is proposed based on statistic datum in the paper. 提出了一种基于统计数据求解经济供电半径和经济功率因数的新方法。
Improve the power factor to avoid the motor direct-frequency high-current use of the motor coil and grid impact. 提高了功率因素,避免了电机直接工频使用时大电流对电机线圈和电网的冲击。
Automatic compensation load reactive power, enhancing the load power factor. 自动补偿负荷无功功率,提高负荷功率因数。
In this paper, the measures of raising power factor for motor and transformer are introduced and the problem of compensation of power factor is analysed. 介绍了提高电动机和变压器功率因数的具体措施,并对功率因数补偿问题进行了分析。
Grid voltage in accordance with corporate standards and requirements for power factor to determine the motor's voltage rating and type. 根据企业的电网电压标准和对功率因数的要求,确定电动机的电压等级和类型。
A new and practical power factor control strategy for three phase PWM current source rectifier was proposed. 提出了三相电流型PWM整流器的一种新型实用的功率因数控制方法。
This paper introduces several methods of reducing energy loss based on enhancing natural power factor of asynchronous motor. 介绍了异步电动机相关能量损耗和以提高其自然功率因数为主的几种节能降损方法。
Power factor characteristics of the rectifier is introduced, and control methods for the conduction angles are analyzed. 介绍了整流装置的功率因数的特点,分析了导通角的控制方法。
The reaction to the total power factor of some the same inductive loads in parallel are presented. 讨论了串联电容法对多组感性负载并联电路总功率因数的影响。
Software design can affect the precision in calculation of power factor, which is made from AC sampling. 在利用交流采样得来的数据进行功率因数角的计算过程中,软件设计对计算结果有很大的影响。
Electric saver can improve the power factor, reducing input current, lighting the transformer's load, and increasing efficiency and transformer's volume. 提高功率因数,降低输入电流,减轻了变压器的负荷并提高了效率,增大了变压器的容量。
According to this relationship, vector control system with energy-saving based on constant power factor was formed. 通过此关系,设计了基于恒功率因数的节能型异步电动机矢量控制系统。
Reactive power balance of power system is important and reactive power compensation can correct displacement power factor. 电力系统无功功率平衡非常重要,无功功率补偿能进行基波功率因数校正。
The dimming process is also accompanied by the lowering of power factor, which reduces the active power. 同时调光的过程伴随着功率因数的降低,减少了有功功率。
Consequently, the additional harmonic loss of rectifier transformer is reduced, the power factor is enhanced and the power quality is improved. 同时整流变压器的附加谐波损耗得到了有效降低,功率因数得到提高,改善了系统的电能质量。
The power factor of equipment can be used to measure the loss of energy in transmission lines. 依据用电设备的功率因数,可测算输电线路的电能损失。
Resistive load, power factor: 1, special alloy resistance. 阻性负载,功率因数为1。采用特制合金电阻。
The circuit adopts PWM chopper control mode, power factor on the system side is close to1. 通过采用PWM斩波控制方式,使系统侧功率因数接近于1。
Vector control of inverter allowed power factor regulation of the windmill. 对网侧逆变器采用矢量控制来调节风电系统的功率因数。
Analysis and Study on Power Factor Regulator Rotor-side Variable Frequency System 功率因数可调的转子变频性能分析和研究