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- According to the requirement of controlling the unity power factor rectifier, a novel method , a phase locked loop (PLL), is used to track the phase of fundamental voltage. 针对单位功率因数整流器的控制要求,提出了一种利用锁相环(PLL)来检测基波电压相位,控制整流器交流侧电流与交流侧基波电压同相位的控制策略。
- Simulation and experimental results demonstrate that the output fundamental voltage can be accurately controlled with small total harmonic distortion and good input/output current quality. 仿真和实验结果表明, 双级矩阵变换器过调制时输出电压基波可以精确控制,谐波畸变率比较小,输入输出电流波形质量好。
- The amplitude of the fundamental voltage drops across the filtering inductances LN are negligible as compared to the amplitude of the mains phase voltages, the voltages across CN therefore are assumed to be impressed and equal to the mains phase voltages. 当基本电压从滤波电感降低到LN时,振幅与主电源相线电压相比可以忽略不计,因此我们可以认为通过CN处的电压被输送并且等于主电源相线电压。
- Reference input fundamental voltage 参考输入基波电压
- 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。
- His fundamental concern was for her welfare. 他最关心的是她的幸福。
- At this time another fundamental change occurred. 这时候又发生了一个根本性的变化。
- Its voltage has not been exceeded. 它的电压没有超过。
- Moderate exercise is fundamental to good health. 适度的运动封健康是绝对必要的。
- Hard work is fundamental to success. 必须苦干才能成功。
- Influence of dead-time on the output fundamental voltage of close-loop controlled SPWM inverter 闭环SPWM逆变器死区时间对输出基波电压的影响
- A NOVEL ALGORITHM OF SVPWM INVERTER IN THE OVERMODULATION REGION BASED ON FUNDAMENTAL VOLTAGE AMPLITUDE LINEAR OUTPUT CONTROL 基于基波电压幅值线性输出控制的SVPWM过调制新算法
- However, they did not wish for a fundamental change. 但他们并不希望发生根本性的变化。
- The Condition Verification of Generator Paralleling Based on the Synthetic Phasor of Positive Sequence Fundamental Voltage 基于正序基波电压合成相量的发电机并网条件核算法
- A fundamental set of rules having authoritative weight. 十条戒律有权威性的一套基本规则
- The fundamental cause of his success is his hard work. 他成功的根本原因是他工作努力。
- A knowledge of economics is fundamental to any understanding of this problem. 经济知识对于理解这个问题是至关重要的。
- Note the polarity of the voltage drop across R. 注意R上电压降的极性。
- These considerations are of fundamental importance. 这些因素具有根本的重要性。
- It is fed into the grid at this voltage. 它是以这种电压馈入电力网。