1) Harmonic Change rate
谐波变化率
2) total harmonic distortion
谐波畸变率
3) total harmonic distortion
总谐波畸变率
1.
Proposed method is used to minimize total harmonic distortion (THD) with certain constraints.
在满足一定约束下,用该方法来减小变换器的总谐波畸变率(THD),以达到消除谐波的目的。
2.
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。
3.
The waveform quality of those PWMmethods are analyzed and compared according to the linear range,switching loss,total harmonic distortion(THD)and outputvoltage gain.
从调制范围、开关损耗、总谐波畸变率及输出电压增益等几个方面对比分析了各种 PWM 控制的波形质量，根据分析结果，提出了一种优化的零序偏移时间实现方式，即根据调制指数和负载功率因数角的情况来调整零序偏移时间，从而实现了整个调制范围内逆变器运行的性能优化。
4) total harmonic distortion (THD)
谐波畸变率(THD)
5) total harmonic distortion
THD(谐波畸变率)
6) total harmonic distortion
谐波总畸变率
1.
In order to improve the power factor in AC/DC inverter circuit with high power,reduce its total harmonic distortion,a programme for the implementation of controlled circuit of the Boost active power factor corrector has been designed in this paper based on the principle of the controlled double-close-circuit and the correcting method for power factor.
为了提高较大功率交流-直流电力变换电路的功率因数、减少谐波总畸变率,通过功率因数校正原理及方法的分析,利用双闭环控制原理设计了一种有源功率因数校正方案。
2.
In order to solve the problems of higher switching frequency and bigger total harmonic distortion of system current,this paper proposes a new current control method with three -level hysteresis -band sine current control.
针对并网逆变器功率开关频率较高、并网电流谐波总畸变率过大的问题,提出了一种改进的正弦电流滞环宽度控制方法。
3.
The novel three-level sine current hysteresis width control ,which doubles frequency, reduces switching frequency and ameliorates total harmonic distortion of system current,is researched and designed.
从降低开关频率和改善系统输入电流谐波总畸变率THD(Total Harmonic Distortion)的角度出发,研究和设计了一种具有倍频效果的改进三态正弦电流滞环宽度控制方法,可以有效地减少开关管功率损耗,降低并网逆变器系统的THD。
补充资料：总谐波畸变率
总谐波畸变率
total harmonic distortion,THD
Z。日gXle匕。Jlbionl.总谐波畸变率(total harmoniedistortion，THD)非正弦周期性交变量的各次谐波含有率的平方和的平方根值，简称畸变率。它是非正弦周期性波形的一个重要数字特征量，用以衡量波形畸变的程度。许多国家规定，低压电力网供电电压的总谐波畸变率不得超过5%。通常认为符合这种标准的工业用电的电压波形是工业的正弦波形。- 以电压畸变波形为例，其总谐波畸变率的定义是THD-{合广一认\a^·‘Z夕1 100;;}羚，V岌戈Ul)式中口。为第n次谐波电压的有效值，、)乙口，为基波电压的方均根值，但也常用额定电压U代替Ul。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条