Three-phase current should be used for large motors.
大型电动机应当使用三相交流电。
The present invention provides a phase current detector.
本发明提供了一种相电流检测装置。
In current mode, it can support stable single phase current and connect with power grid.
电流控制模式下，可提供稳定之单相电流与市电并网。
Then using fuzzy algorithm with phase current and flux linkage as inputs, the rotor position can be detected.
在此模型的基础上，运用模糊算法，以电流和磁链作为输入、位置作为输出，检测出转子的位置。
The main control parameters of SRD are opening angle, turn-off angle, phase current and phase winding voltage.
SRD的主要控制参数有开通角、关断角、相电流和相绕组电压。
A pulsating torque component can be compensated by inject a selected harmonic component to the phase current.
消除转矩脉动可以通过对定子电流加入谐波的方式完成。
A novel control method is proposed in this paper, namely six-phase motor trapezoidal wave phase current control.
针对多相电机控制模式复杂性的特点，本文提出一种新颖的控制方式：六相感应电机梯形波相电流控制。
A new three-phase current source rectifier (CSR) topology and its multi-bridge parallel technique are studied in the paper.
研究了一种新的三相电流型PWM整流器(CSR)的拓扑结构及其多桥并联技术。
The present invention relates to phase current sampling and regulating apparatus and methods, and electric motor drive systems.
本发明涉及相电流采样和调节装置和方法以及电动机驱动系统。
The neutral-point voltage fluctuation of three-level converter is only related to applied modulation method and three-phase current.
三电平变流器的中点电压波动只与变流器采用的调制技术和三相电流有关。
The system also includes a switch control circuit to switch the MOSFET switches in synchronization with the three-phase current flow.
本系统还包括开关控制电路，用于与三相电流同步切换MOSFET开关。
Dead-time effects can be regarded as a kind of space-vector, which is determined by two factors: sector number and direction of phase current.
死区效应可被视为一种空间矢量，它由两个因素决定：扇区数和相电流方向。
The relation formula is given by calculating the phase current and central wire current, thus the motivation of central wire choice is offered.
通过对相电流及中线电流的计算，给出了二者的关系式，为确定选择中线提供了理论依据。
Ways of balancing the phase current of an induction motor operating with unbalanced supply and fault diagnostics of the thyristors are discussed.
提出了在异步电动机供电不平衡的情况下平衡相间电流的方法，给出了晶闸管故障检测的方法。
The torque of switched reluctance motor is a highly non linear function depends on phase current and rotor position, so the torque ripple occurs.
开关磁阻电动机的转矩是各相电流与转子位置的高度非线性函数，这使得电动机的转矩容易出现脉动。
For future fault diagnosis and troubleshooting, the working voltage and the three-phase current can be preserved when the oil-extractor has fault.
该设备还可将出现故障时的工作电压、三相电流值保存下来，作为日后故障诊断及故障排除的依据。
Electromagnetism isolated Hall sensor is used to sense the phase current of the PMSM, and the IGBT CPV363M4K module is used to implement the inverter.
采用电磁隔离霍尔元件进行电流检测，采用了IGBTCPV 363m 4 K模块组成逆变桥来实现功率主回路直流到交流的逆变。
The sensitivity and the security of the percentage differential criteria using phase current and superimposed phase current are studied comparatively.
全面对比分析了全电流比例差动判据和故障分量电流比例差动判据的灵敏性和安全性。
If only phase current is used in breaker failure protection, miss trip may occur no matter the threshold of current is higher or lower than load current.
如果仅采用相电流判据，将无法避免失灵保护误动或者拒动。
The variables compared include the phase voltage and the phase current of the armature winding, the field current, the load current and the damper bar currents.
所比较的变量有电枢相电压和相电流、励磁电流、负载电流以及阻尼条电流。
This paper analyses the internal overvoltage and the phase current of grounded wye shunt capacitor bank when there are failures in it, and gives corresponding equations.
分析了中性点接地电容器组内部故障时的内部过电压和相电流变化，并给出了相应计算公式。
Under the proper simplified condition, the calculation formulas of rectification voltage and phase current were deduced out respectively and were testified by experiment.
在适当的简化条件下，推导出各自整流电压和相电流的计算公式，并通过了试验验证。
With the complexity of the control of multiphase machines, a novel control method was proposed in this paper, namely six-phase motor trapezoidal wave phase current control.
针对多相电机控制模式复杂性的特点，提出一种新颖的控制方式：即六相感应电机梯形波相电流控制。
The fault phase selectors, including the phase current difference suddenly-change and the sequence current, may misoperate in some cross country faults and conversion faults.
研究表明相电流差突变量、稳态电流序分量等选相元件在发生某些跨线及转换性故障时会误选相。
Using the incremental fuzzy control with self-adapting parameter, the phase current of the switch reluctance motor was optimized, and the constant torque control is implemented.
采用一种基于参数自调整的增量式模糊控制器，对电机相电流进行优化，从而实现恒转矩输出。
KIWA synthetic power saver with his unique structure form eliminates higher harmonic of the electrical network by way of the balance in adjusting three-phase current and voltage.
KIWA综合节电装置以其独特结构形式，通过调整三相电流和电压的平衡，消除电网高次谐波。
In this paper, the nonlinear magnetization data method is firstly extended from the monophase current system to the poly phase current system, and it is of important significance.
本文成功地将非线性磁参数法的思想从单相电流系统推广到了多相电流系统，对开关磁阻电机的理论研究具有重要的意义。
The control system is made of double closed loops: the inner current loop and the outer temperature loop, and satisfies the EAF's temperature need and three phase current balance.
采用温度控制外环和电流平衡控制内环的双闭环结构实现电弧炉温度和电极三相电流平衡的智能集成控制。
The key points of the iec method for calculating the short circuit current and its heat effect of a three-phase current system are described and elucidated specifically by examples.
介绍iec三相交流系统短路电流计算方法的重点和短路电流热效应计算，并用例题介绍其具体使用情况。
The key points of the iec method for calculating the short circuit current and its heat effect of a three-phase current system are described and elucidated specifically by examples.
介绍iec三相交流系统短路电流计算方法的重点和短路电流热效应计算，并用例题介绍其具体使用情况。
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