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- total harmonic ratio 总谐波比
- It affects the SNR (signal-to-noise ratio) and the THD (total harmonic distortion) of a conversion. 它影响转换的SNR（信噪比）和THD（总谐波失真）。
- The curve which indicate relations between trigger angle,commu-tation angle and characteristic harmonic ratio of 12-pulsating rectifier is presented. 简述了中频电源的工作原理,得出了12脉动整流器的特征谐波含有率与触发角和换相重叠角的关系曲线。
- The most common ways are to specify Harmonic Distortion, Total Harmonic Distortion (THD), or Total Harmonic Distortion Plus Noise (THD + N). 最通用的方法是指明谐波失真，总体谐波失真(THD)，或总体谐波失真加噪声(THD+N)。
- Besides, the resonant condition is monitored by minimizing the total harmonic distortion(THD) of the voltage applied to the device terminals. 此外，利用最小化待测设备之端电压总谐波失真度，进而监控系统谐振情况。
- The power transfer quality factor of PFC is above 0.98 and the total harmonic distortion of the line current is less than 5%. 准谐振PFC的功率传输品质因数在0.;98以上，电流总谐波畸变率小于5%25。
- Further more, the sample time can be shortened in this case, which can reduce the Total Harmonic Distortion (THD) and make the output waveform better. 仿真实验结果表明：采用该方法后，降低了输出波形畸变率，电压电流波形更加理想，为实现更好的逆变效果提供了条件。
- Reducing the total harmonic distortion (THD) of the magnet current in the parallel resonant network is the key technique for the magnet current tracking accuracy. 在并联型怀特电路中，降低磁铁电流的高次谐波含量，即电流总谐波畸变率(THD)是保证磁铁电流跟踪精度的关键所在。
- Wang Zhipeng, Zheng Yuping, He Jiali.An algorithm to distinguish current transformer's saturation by calculating the harmonic ratio of branch current[J].Proceedings of EPSA, 2000, 12(5): 19-24. [5]王志鹏;郑玉平;贺家李.;通过计算谐波比确定母线保护中电流互感器的饱和[J]
- The relationship among input current harmonic distribution and power factor, total harmonic distortion, psophometric interference current, are discussed. 在此基础上进一步探讨了变流器功率因数、输入电流总谐波畸变率以及等效干扰电流等与谐波分布之间的关系。
- Reducing the total harmonic distortion （THD）of the magnet current in the parallel resonant network is the key technique for the magnet current tracking accuracy. 在并联型怀特电路中，降低磁铁电流的高次谐波含量，即电流总谐波畸变率（THD）是保证磁铁电流跟踪精度的关键所在。
- Simulation and experiment show the UPS system has the merits of strong ability with three-phase unbalanced load,low total harmonic distortion(THD) of output voltage,high work efficiency. 通过仿真和实验结果表明,该UPS系统具有带三相不对称负载能力强,输出电压波形总谐波失真度(THD)小,工作效率高等优点。
- The individual and total harmonic voltage distortion limits, APF active power consumption/generation, levels of voltage imbalance, and the size of the APF can be taken into account. 限制式考虑的项目有个别及总谐波电压失真、滤波器功率平衡限制式、电压不平衡率和滤波器容量。
- 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。
- Wan Zhihong,Zheng Yuping,He Jiali.An algorithm to distinguish current transformer's saturation by calculating the harmonics ratio of branch current[J].Proceedings of the EPSA,2000,12(5):19-24. [9]王志鸿;郑玉平;贺家李.;通过计算谐波比确定母线保护中电流互感器的饱和[J]
- Total Harmonic Distortion plus Noise, 总谐波失真加噪声
- THD+N: Total Harmonic distortion+Noise 总谐波失真
- The mass rally was a total fiasco. 那次群众集会彻底失败。
- In this example, a finite sum of harmonics for approximation of a ramp function is demonstrated graphically for the parameter variation of number of total harmonics. 本例图示以有限谐波级数和近似斜坡函数随总谐波数量之变化。
- I must say the news comes as a total surprise. 我得说这个消息来得太突然了。
