Dead-time is compensated according to the output reference voltage vector and phase currents.
首先判断电流方向，确定死区电压矢量的电平；
To overcome the disadvantage of higher torque ripple in Gearing Motor, one method of instantaneous torque control by optimum profiling of the phase currents is presented.
仿真结果表明，此方法对分析啮合电动机及其驱动系统在各种控制方式下的运行性能具有一定的参考价值。
In addition, the thesis analyzes the influence of the filter structure and parameters on the output DC voltage ripple and the shape of phase currents, as well as harmonics of phase currents.
另外，还对滤波器的结构和参数对输出直流电压脉动和发电机相电流波形的影响及相电流谐波进行了仿真分析。
This effect can be measured in either the time domain by observing the rate of decay of voltage or in the frequency domain by measuring phase shifts between sinusoidal currents and voltages.
这个效应可以在时间域通过观测电压的衰变率来测量，也可以在频率域通过正弦电流和电压之间的相变来测量。
These may be required where harmonic currents caused by the thyristor phase control of the reactor current must be filtered to prevent unacceptable transmission bus voltage distortion.
这里须滤去由电抗器相位控制引起的谐波电流以避免不能接受的输电母线电压畸变。
The phase and the size of all branch currents of the 13,104 kinds of fault of short circuit were calculated thoroughly thorough " mufti - bop analysis ".
应用“多回路分析法”深入、详尽地计算了13 104种短路故障的全部分支电流的大小和相位。
The phase mapping method of a field inhomogeneity based on an Z axis pulse field gradient and polynomial fitting procedures of the axial shimming coil currents were described.
通过对Z轴磁场梯度和匀场线圈电流的多项式拟合，以获得磁场不均匀而引起的相位分布。
The thermally stimulated currents (TSC) and the ferroelectric phase transition of the ferroelectric ultrafine grain were investigated.
研究了铁电微晶粉粒的热刺激电流及其铁电相变。
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。
The relations between the currents of all phases and at both sides are drawn out by applying circuit theories and analyzing different inter phase short circuit faults of this kind transformer.
随后利用电路理论对这种变压器的各种相间短路故障进行了分析，得到了各种故障情况下变压器高低压侧各相电流间的关系。
The results also indicate that when special filters are connected to secondary three-phase system, the primary harmonic currents decrease by about 28% than by using conventional two-phase filters.
结果还表明，当在二次侧三相系统接入文中提出的特殊滤波器时，谐波电流比用常规两相滤波器降低约28%。
Unbalances appear in a three-phase system when voltages or currents differ from on phase.
三相系统中，某的电压或电流与其它相不相同时，就出现幅值与或。
This paper based on the orthogonality of sine, presents an approach to the detection of harmonic and reactive currents suitable for single-phase circuits.
根据正弦函数的正交特性，提出了一种单相电路的谐波和无功电流检测方法。
A new approach to real time detection of harmonic and reactive currents for single-phase circuit was proposed.
提出了一种新的单相电路的谐波和无功电流实时检测方法。
Based on wavelet transform, a novel on-line detection method is presented, which is based on the detection of symmetry degree among the stator three-phase line currents phases.
基于小波变换的分析方法，提出了基于定子三相电流之间相位对称度检测的定子绕组匝间短路故障在线检测新方法。
The interpretation of active and reactive currents in non-sinusoidal and unbalanced three-phase four-wire systems is given based on the generalized instantaneous reactive power theory.
以通用瞬时无功功率理论为基础，阐述了电压不对称和非正弦条件时的有功和无功电流的物理意义。
This paper analyses and compares detecting techniques of compensating currents in three-phase balanced and unbalanced systems.
对其利、偿电流在三相平衡和不平衡系统下的检测技术进行分析和比较。
A set of ac power-supply circuits carrying currents of equal frequency with uniformly-spaced phase differences.
一组频率相同，相位彼此相差均匀的交流供电电路。
Harmonic load model is established by transforming the harmonic currents from two-phase at LV side to three-phase at HV side.
将谐波电流从低压侧的两相转换到高压侧的三相，建立谐波负荷模型。
A three-phase alternating current parameters instrument to be used in industry is designed. It can measure the voltages, currents, power factors of each phase of three-phase alternating current.
设计开发一种工业用三相交流电参数仪，能够测得三相交流电各相的电压、电流、功率、功率因子等参数；
On the basis of block building and layer building in rotor slots of single phase induction motors, the paper deduces numerical formulas for calculating layer currents under skin effect.
在对单相异步电机转子槽分块与分层处理的基础上，推导了集肤效应作用下每层电流的数值计算公式。
A detection approach of harmonics and reactive currents based on the integrated vector in 3 - phase circuit is proposed, which has the advantage of brief arithmetic and wide applications.
从三相电路的综合矢量出发，提出了一种适用性广、算法简单的谐波及无功电流检测方法。
The three-phase short circuit currents of bulk electric power system are very high, and the high currents do harm to the working of the system.
针对三相短路电流产生的电动力进行分析，经过受力分析，瞬间较高的电动力对户外柱上真空断路器的影响很大。
Two practical applications are described: (1) eddy currents in 3-phase bus enclosures; (2) current distribution among the lead…
本文并介绍了工程上的两个应用实例：（1）三相封闭母线外壳涡流。（2）大功率三相电炉引入导线的电流分布。
Two practical applications are described: (1) eddy currents in 3-phase bus enclosures; (2) current distribution among the lead…
本文并介绍了工程上的两个应用实例：（1）三相封闭母线外壳涡流。（2）大功率三相电炉引入导线的电流分布。
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