| 1. | The minus harmonics power is fed back power and turns to power garbage
而这部分负的谐波电能又回馈给了电网，造成电网垃圾。 |
| 2. | The harmonic power flow is the most valid method to study power system harmonic
谐波潮流计算是研究电力系统谐波最为有效的手段。 |
| 3. | Detection and measurement device of harmonic electric energy based on harmonic power tidal current analysis
基于谐波功率潮流分析的谐波电能检测与计量 |
| 4. | The harmonic impedance is very important to harmonic power flow and analysis of harmonic at pcc
谐波阻抗对于进行谐波潮流计算和分析pcc处的谐波是至关重要的。 |
| 5. | In order to calculate the harmonic power flow , the parameter model of the elements and loads in power system must be achieved
进行谐波潮流计算必须得出电力系统元件及负荷等的谐波参数模型。 |
| 6. | The harmonic power flow algorithm , particularly the three - phase harmonic power flow algorithm of power system is studied based on these harmonic models
在此基础上，研究了电力系统谐波潮流算法，特别是三相谐波潮流算法。 |
| 7. | This paper presents a three - phase harmonic power flow algorithm using phase components and back - forward sweep method to solve the disconvergence when the three - phase transformer harmonic model was used . the example result presented the method was feasible and
本文针对在进行三相谐波潮流算法时因引入三相变压器谐波模型而可能导致计算结果不收敛问题，提出了谐波潮流计算的相分量法，其中引用了前推-回代法。 |
| 8. | Traditional energy meter can cause errors under the condition of harmonics due to its structural characters , and at the same time harmonic loads take in foundational power and send out harmonic power . this paper proposes a new way and realizes accuracy and fair energy metering
传统的电能表在谐波存在下由于自身的结构特性会产生误差，就此进行分析提出了新的电能计量方法，应用虚拟仪器技术实现了准确、公平、合理的电能计量。 |
| 9. | The subject inducts digital time division technology ( pwm ) , which is more advantageous at the accuracy and the predigest of hardware than simulant multiplication . what they call measuring power energy reasonably is that measuting except harmonics power energy fed back power . yet it realizes reasonable measurement of power energy which measures by base wave ac parameters method base on digital time division
本课题引入了数字时分割( pwm )脉宽调制技术，在测量的准确性、硬件电路的简化等方面都比模拟乘法器具有较高的优越性。所谓合理的计量电能，就是不计非线性负载回馈给电网的负的谐波电能，而采用基于数字时分割的基波交流参数测量的方法，真正实现了电能的合理计量。 |
| 10. | Chaotic switching modulations introduce low - frequency harmonic spectrum of output voltage as random switching modulation . in some case , low - frequency noise ripple offset the effect chaotic switching modulations reduce the level of emi . it indicates that the ccfmfd integrates the advantages of spreading harmonic power at the multiples of the switching frequency and not introducing significant noise ripple at low - frequency range . among all chaotic switching modulations , the ccfmfd is considered as the best choice in applying to dc / dc converter
与随机调制模式相同，混沌开关调制模式也引入输出低频噪声纹波，有些情况下低频噪声纹波可能抵消混沌开关调制降低emi水平的效果。分析表明： ccfmfd模式具有较好的降低emi水平和引入较小低频纹波的优点，可以作为混沌调制模式较佳的选择。 |
