Based on the method of SVPWM, various forms of phase voltage waveforms are generated by adjusting the duty time of the two zero vectors and the duty order of every vector.
在空间电压矢量形成PWM波的基础上,通过两个零矢量作用时间的不同分配及调节各矢量作用顺序,形成了不同形式的相电压波形。
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。
The effects of different oxidation voltage and pulsed frequency on microstructure, thickness and phase constitute of the coatings have been investigated.
试验研究了不同微弧氧化电压和脉冲频率对涂层微观形貌,涂层厚度及相组成的影响。
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。
Test results of simulation system show that grid-connected voltage is synchronization with grid phase voltage.
通过对光伏并网系统的测试表明:并网电压与电网相电压同频同相。
A cosine phase shifter is applied in phase shifting circuit to meet the possible maximum trigger current and voltage of thruster.
移相线路中配有与弦移相器以满足可控硅整流器最大可能触发电流和电压。
The product of the effective values of the voltage and current with the cosine of the phase Angle between current and voltage in an alternating-current circuit.
伏特量交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积。
A novel single - phase parallel hybrid power filter is presented in this paper, which can eliminate drawbacks of LC passive filter and the conventional voltage source parallel hybrid power filter.
本文针对LC无源滤波器和传统的电压源型并联混合电力滤波器的缺点,提出了一种新型的并联混合电力滤波器。
A new control scheme of three phase voltage source PWM rectifier is presented.
提出了一种新的三相电压型PWM整流器控制方案。
The simulation result indicates that this method can accurately detect the magnitude, duration and phase jump information of voltage sags.
实验结果表明该方法能正确地检测电压跌落的幅值、持续时间和相位跳变的信息。
As another example, the logic state of the select signal can be changed in response to a change in the power supply voltage provided to the phase frequency detector.
作为另一个示例,选择信号的逻辑状态可响应于提供给脉冲频率检测器的电源电压的变化而改变。
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。
However, the magnitude of the breaking phase voltage at transformer exit may have a relatively high raise, and may cause damage to electric appliance.
然而,在变压器出口处断线相电压会有较大幅度的升高,可能损坏家用电器。
The relations of the amplitude and the phase of the injected voltage by the series converter of the UPFC are defined in difference control patterns.
确定了统一潮流控制器在不同调节控制方式下所对应的串联注入电压幅值和相位关系。
It measures excess phase of voltage current by using digital circuit, Based on the reactive compensation theorem, the software hardware of the controller is deigned.
该控制器采用数字检测电路来获取电网电压与电流的相位差,从无功补偿的原理出发,设计控制器的软硬件。
The lump-constant equivalent model is built to represent the relation of any single phase voltage and mold current with this characteristic.
利用该特征建立了反应任一单相电压与模电流之间关系的集中参数等效模型。
The drain-source voltage (Fig. 28) starts oscillating at the end of the flyback phase and reaching the minimum of 100V when the MOSFET turns on.
漏源极电压(图28)在反射过程结束后并减小到100伏特时场效应晶体管导通。
Aiming at the phase error of the electronic voltage transformer (EVT) with capacitive divider, a phase compensation scheme was proposed.
针对基于电容分压原理的电子式电压互感器的相位误差,提出了相位补偿方案。
By making changes of reference voltage phase diagrams of load, this method can enlarge the compensation range and decrease the energy output of DVR.
该方法通过对负载参考电压相角的旋转和幅值的“伸缩”,扩大了DVR的补偿范围,减少了D VR的有功输出。
At the time of failure, no matter what kind of start state of voltage phase, the zero-sequence transient current has the characteristic of inverse phase.
在故障时刻,无论故障相电压的相位处在何种初始状态下,都有零序电流反向的特征。
Voltage 220V, only one kind of plug, same as the 3 phase plug we use in China, the 2 phase can't be used there.
电压220V,插座只有一种,就是国内的3相插座,国内的2相在那里用不了的。
The paper detailed the relationship of input resonant voltage, modulation voltage and output sinusoidal voltage of single phase resonant DC link inverter(RDCLI).
详细研究了谐振直流环节单相逆变器的输入谐振电压与逆变器输出调制电压、输出正弦电压的关系;
Aiming at the phenomenon of reduced system output voltage capability, phase deflection and wave aberration of tradition SVPWM dead problem.
传统SVPWM控制方式存在死区时间,使系统输出电压能力降低,出现相位偏差、波形畸变等现象。
GPS-based synchronized phasor measurement unit (PMU) can measure the power Angle or phase Angle of bus voltage directly.
基于GPS的同步相量测量单元(PMU)实现了电力系统的功角或母线电压相角直接可测。
This system can avoid the influence that three-phase imbalance load towards the output voltage of inverter.
该系统可以避免三相不平衡负载对逆变器输出电压的影响。
A new method of current decomposition is proposed for single-phase circuit with periodical voltage and current.
对于任意周期性电压与电流信号的单相电路,提出一种新的电流分解方法。
The harmonic characteristic of input current in single-phase voltage source PWM converter is analyzed theoretically.
从理论上分析了单相电压源pwm变流器输入电流的谐波特性。
The harmonic characteristic of input current in single-phase voltage source PWM converter is analyzed theoretically.
从理论上分析了单相电压源pwm变流器输入电流的谐波特性。
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