本实用新型提供一种交流稳压调压器,综合利用了交流电压相位控制法和幅值控制法。
The utility model provides an AC voltage stabilizing regulator, which synthetically utilizes the AC voltage phase control method and the amplitude control method.
本文着重研究了因近场感应电压相位差引起的耦合误差,以及近场天线差斜率变化引起的定向灵敏度的变化;
This paper mainly studies the coupling error caused by induction voltage phase difference, and fluctuation of directional sensitivity caused by changes in near-field difference slope.
通过参数设定、输入电压相位计算、控制算法实现和开关接口等环节设计,实现了输入电流偏置角动态调整的控制策略。
In order to study the strategy of input current modulation, the simulation model of matrix converter under unbalanced input is built with MATLAB.
新型的FET输入管放大器(如ad820系列放大器),在设计上做了改善,对于额定电源电压范围之内的信号,能够防止输出电压相位反转。
New FET-input amplifiers, like the AD820 family of amplifiers, incorporate design improvements that prevent output voltage phase reversal for signals within the rated supply voltage range.
包括相位和电压监测装置。
在连接交流电源之前,请验证交流电压、相位和频率是否与控制装置外壳门参数板上的相应数据相同。
Verify ac line voltage phase and frequency with the controller data plate on the enclosure door prior to connecting ac power.
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。
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.
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。
The simulation result indicates that this method can accurately detect the magnitude, duration and phase jump information of voltage sags.
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。
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.
由于补偿后的电流与电压在相位上接近,即补偿后的功率因数接近1,所以达到了动态无功功率补偿的目的。
The electric current and voltage are close to the phase after compensating, namely the power factor is close to 1, so the purpose of dynamic var compensation is achieved.
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。
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.
电机马力(功率),电压,相位和频率。
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。
Aiming at the phenomenon of reduced system output voltage capability, phase deflection and wave aberration of tradition SVPWM dead problem.
但电压模型中的纯积分环节存在直流偏置和初始相位问题。
But the pure integrator of the voltage model has some disadvantages like DC bias and initial phase problems.
它可以根据正交输出型编码器信号的相位关系,输出具有正负极性的模拟电压信号。
The circuit can output analog voltage signals with positive and negative polarity according to the phase relation of encoder signals of orthogonal output type.
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。
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.
准确获得电网电压的相位角,在电力电子装置设计中有重要的意义。
To obtain the phase of line is important in the design of power electronic equipments.
为了获得准确的相位信息,在同一点感应电压和电流式非常重要的。
It is very important to sense both voltage and current at the same point in order to get accurate phase information.
在线调节步长改变电压收敛速度,设计锁相控制电路,自动同步跟踪电网频率和相位。
The online variable step can also regulate the voltage convergence rate, and the phase-locked control circuit is designed to synchronously trace frequency and phase of power grid automatically.
传统电压控制模式的电机驱动电路系统频率都受电机的本征频率制约,其相位延迟会随负载的变化而变化。
The system bandwidth of conventional voltage-control-mode motor driver circuits is limited by the intrinsic frequency of the load, and its phase lag is also load-dependent.
通过耦合电感间的换流与开关器件通断相位角的控制,使其输出超前电压的电流,以补偿电网中常见的感性无功。
It can delicer leading current with the current exchange in coupling reactor and the controlling of the switch on off phase angle in order to compensate lagging reactive power.
本文介绍了以单片机为基础的交流电压、电流直接采样的设计与实现并用锁相环CD 4046来实现相位角的采样。
The paper introduced a design and realization of direct sampling of AC Voltage and current based on a single chip micro - computer and used PLL CD4046 to realize phase Angle sampling.
在电力系统中常常需要对两个同频率信号(如工频电压和工频电流)之间的相位关系进行准确的测量。
The phase difference often needs to be measured between two signals with the same frequency in power system, such as power voltage and power current signals.
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。
Aiming at the phase error of the electronic voltage transformer (EVT) with capacitive divider, a phase compensation scheme was proposed.
其负电容效应并不是来自于电流-电压的相位变化,而是来自于电容谐振。
The negative capacitance effect was not from the phase of the current - voltage change, but from the capacitor resonant.
提出了一种基于数字信号处理器的基波相位和频率校正检测方法,可用于电力系统中电压或电流基波分量同步信号的获取。
A novel fundamental frequency and initial phase detection method based on DSP is proposed, which can be used to get synchronous fundamental frequency voltage or current signals of power system.
提出了一种基于数字信号处理器的基波相位和频率校正检测方法,可用于电力系统中电压或电流基波分量同步信号的获取。
A novel fundamental frequency and initial phase detection method based on DSP is proposed, which can be used to get synchronous fundamental frequency voltage or current signals of power system.
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