Research of the Intermediate Frequency Furnace Harmonic Analysis and Control Based on ADPSS

2018 ◽  
Author(s):  
Zheng Tingting ◽  
Liu Weiming ◽  
Liu Jingyuan ◽  
Han Yingkun
Keyword(s):  
Harmonic Analysis ◽  
Intermediate Frequency ◽  
And Control

The Application of the Amorphous Metal Transformers in Heavy Oil Electric Heating System

2014 ◽  
Vol 532 ◽  
pp. 191-195 ◽  
Author(s):  
Bao Jiang Sun ◽  
Lei Su ◽  
Chao Zhang
Keyword(s):  
Electric Heating ◽  
Heating System ◽  
Intermediate Frequency ◽  
Amorphous Metal ◽  
Technical Performance ◽  
Alloy Material ◽  
Working Principle ◽  
The Stability ◽  
And Control ◽  
Fast Rise

In order to solve the problem that the big loss of no-load and the fast rise of temperature when employ the conventional silicon steel metal transformer (SSMT) in the electric heating system, we choose the amorphous metal transformer (AMMT). In this paper, firstly, we give a brief introduction of the amorphous alloy material properties and compare the no-load characteristic of the AMMT with the SSMT. Secondly, the structure of intermediate frequency heating system working principle and control strategy are introduced. Finally, extensive experiments were conducted to validate the ideas. The experiments show that the AMMT not only improve the efficiency of transformer, solve the heating problem of transformer, but also improve the stability, security and other technical performance of the system, so it is worth recommending and promoting.

Harmonic Analysis of Non-Sinusoidal Harmonic Signals in Electric Power System

2014 ◽  
Vol 1070-1072 ◽  
pp. 779-784
Author(s):  
Dan Luo ◽  
Yi Xiao ◽  
Jie Na Zhou
Keyword(s):  
Power System ◽  
Harmonic Analysis ◽  
Short Range ◽  
Time Windows ◽  
Electric Power System ◽  
Normal Operation ◽  
Calculation Error ◽  
Interpolation Algorithm ◽  
Harmonic Signals ◽  
And Control

Harmonic Analysis and control is very important for the power system because harmonics have serious harm to its normal operation. Harmonic Analysis uses fast Fourier transform (FFT) to solve this problem though it causes the spectrum leakage which Increases the calculation error. To solve this problem, the interpolation algorithm combine with tapered time windows are used. The tapered time windows solve the long-range leakage and the interpolation algorithm solves the problem of short-range leakage.

scholarly journals Fluctuation-induced distributed resonances in oscillatory networks

2019 ◽  
Vol 5 (7) ◽  
pp. eaav1027 ◽  
Author(s):  
Xiaozhu Zhang ◽  
Sarah Hallerberg ◽  
Moritz Matthiae ◽  
Dirk Witthaut ◽  
Marc Timme
Keyword(s):  
Dynamic Network ◽  
Intermediate Frequency ◽  
Response Patterns ◽  
Low Frequencies ◽  
High Frequencies ◽  
Self Organized ◽  
Oscillatory Networks ◽  
Input Signals ◽  
Induce Response ◽  
And Control

Across physics, biology, and engineering, the collective dynamics of oscillatory networks often evolve into self-organized operating states. How such networks respond to external fluctuating signals fundamentally underlies their function, yet is not well understood. Here, we present a theory of dynamic network response patterns and reveal how distributed resonance patterns emerge in oscillatory networks once the dynamics of the oscillatory units become more than one-dimensional. The network resonances are topology specific and emerge at an intermediate frequency content of the input signals, between global yet homogeneous responses at low frequencies and localized responses at high frequencies. Our analysis reveals why these patterns arise and where in the network they are most prominent. These results may thus provide general theoretical insights into how fluctuating signals induce response patterns in networked systems and simultaneously help to develop practical guiding principles for real-world network design and control.

Harmonic analysis and control of domestic loads

2015 ◽  
Author(s):  
Zhong-Dong Yin ◽  
Shu-Yao Wang ◽  
Shuai Wang
Keyword(s):  
Harmonic Analysis ◽  
And Control

scholarly journals The Design of Harmonic Simulator based on Hartley Transform

2018 ◽  
Vol 1 (1) ◽  
pp. 21-24 ◽  
Author(s):  
Fahri Vatansever ◽  
Nedim Aktan Yalcin
Keyword(s):  
Power Systems ◽  
Harmonic Analysis ◽  
Power Quality ◽  
Harmonic Distortion ◽  
Nonlinear Loads ◽  
Hartley Transform ◽  
User Friendly ◽  
And Control ◽  
Measurement And Control

Increase in the number of nonlinear loads and devices in energy and power systems have raised harmonic distortion on voltage and current signals. Harmonics are one of the primary factors in determining power quality. Therefore, measurement and control of harmonics are crucial. Many methods have developed for harmonic analysis. In this study, a simulator which uses Hartley transform for determining harmonics is designed. Harmonic distributions and parameters of loaded/defined signals can be calculated accurately and effectively and obtained results can be displayed numerically and graphically with developed systems which have user friendly interface.

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