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- Voltage unbalance of three phase ac distribution systems adversely affects power customers. 配电系统三相电压的不对称会对用户造成一系列不利影响。
- Li Jinfeng,Li Guangkai,Zhao Chengyong,et al.Control strategy for VSC-HVDC system under unsymmetry of three phase voltage[J].Power System Techology,2005,29(16):16-20(in Chinese). [9]李金丰;李广凯;赵成勇;等.;三相电压不对称时带有电压源换流器的HVDC系统的控制策略[J]
- A phase A fundamental positive sequence voltage selected unit based on LPF substitutes for the original ip-iq PLL to ensure exact voltage of A phase is selected even in case of imbalance three phase voltage. 并采用一种新颖的基于低通滤波的A相正序电压提取单元来代替原始的ip-iq检测法的PLL锁相环,在三相电压畸变情况下仍可以正确提取A相正序电压,以精确检测出谐波和无功电流。
- In order to measure the VFT phase voltage on three-phase enclosed GIS, 3 capacitance sensors are needed. Each capacitance sensor is coupled with the electric field of three phases voltage. 为了测量GIS中三相快速瞬态电压，需要三个电容传感器，而每个传感器同时受三相电压的电场耦合。
- Considering the imbalance of three phase voltages,a new arithmetic which verifies the generator paralleling based on the synthetic phasor of positive sequence fundamental voltage is proposed. 考虑到三相电压或多或少有些不平衡,提出了一种新的基于正序基波电压合成相量的发电机并网条件核算法。
- The proposed method has been simulated and it proves that rational time of generator paralleling can be forecast in the case of the imbalance of three phase voltages and the fluctuation of slip frequency. 试验表明:文中提出的方法能够在三相电压不平衡和滑差角速度波动时预报出合理的并网时机。
- Three Phase Voltage PWM Rectifier Based on Current Variable-vtructure Control 基于电流变结构控制的三相电压型PWM整流器的研究
- Research of Three Phase Voltage Source PWM Rectifier Control Technology 三相电压源PWM整流器控制技术研究
- High Precision Detection of Zero Crossing Point for Three Phase Voltage Based on FPGA 基于FPGA的三相电压过零点高精度检测
- Three phase voltage model AC-AC frequency-variable inverter controlled by single-chip microcomputer 单片机控制的三相电压型交-交变频器
- Is the stator three phase line voltage the same? And is it current zero? 定子三相电压是否相等?其电流是否为零?
- GB/T 15543-1995, Quality of electric energy supply Admissible three-phase voltage unbalance factor[S]. [4]GB/T15543-1995;电能质量三相电压允许不平衡度[S].
- A vector selection scheme is put forward, which is based on 12 sectors, also an algorithm for avoiding capacitor voltage unbalance is presented. 提出了一种基于12区间划分的矢量选择方法，考虑了中点电位平衡和电压跳变问题。
- Output voltage and current is often distorted in half bridge converter because voltage unbalance of input capacitors though its application is very abroad. 摘要半桥逆变器应用广泛，但存在直流分压电容不均压，使分压电容中点电压漂移，导致输出电压和电流畸变的缺点。
- Novel control for an input-series and output- parallel dual two-transistor forward converter (ISOP-DTTFC) is proposed, based on the analysis and result on the voltage unbalance. 分析了交错控制输入串联输出并联组合式双管正激变换器输入端不均压现象及其起因。
- three phase voltage 三相电压
- Note 1 Single display the three phase total active power. 注1:单屏显示三相总有功功率。
- In addition, the impulse loads caused voltage wave and flink, and lopsided loads caused imbalance of three - phase voltage. 另外，电力系统中的冲击负荷也引起电压波动和闪变，不对称负荷引起三相电压不平衡。
- The main contents of power energy include frequency deviation, voltage deviation, voltage fluctuation and flicker, voltage unbalance, temporary or transient over-voltage, wave distortion, voltage dips and interruption, power supply reliability and so on. 电能质量的内容包括频率偏差、电压偏差、电压波动与闪变、三相不平衡、暂时或瞬时过电压、波形畸变、电压暂降与短时中断以及供电连续性等。
- Three phase wiring saves 50% of power compared with one-phase. 三相电源比单相电源可省电逾50%25之多。
