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Rectangular Potentials in a Semi-Harmonic Background: Spectrum, Resonances and Dwell Time [PDF]

Symmetry, Integrability and Geometry: Methods and Applications, 2011
We study the energy properties of a particle in one dimensional semi-harmonic rectangular wells and barriers. The integration of energies is obtained by solving a simple transcendental equation.
Nicolás Fernández-García, Oscar Rosas-Ortiz   +1 more
doaj   +6 more sources

Bargainnet: Background-Guided Domain Translation for Image Harmonization [PDF]

2021 IEEE International Conference on Multimedia and Expo (ICME), 2021
Image composition is a fundamental operation in image editing field. However, unharmonious foreground and background downgrade the quality of composite image. Image harmonization, which adjusts the foreground to improve the consistency, is an essential yet challenging task.
Cong, Wenyan, Niu, Li, Zhang, Jianfu, Liang, Jing, Zhang, Liqing   +4 more
openaire   +2 more sources

Harmonic Contribution Quantification for Multiple Harmonic Sources Based on Minimum Impedance Fluctuation

IEEE Access, 2023
The background harmonic fluctuation has a significant impact on the results of harmonic contribution quantification. However, the existing methods, especially those applied for multiple harmonic sources scenario, usually assume that the background ...
Xin Tang, Fangwei Xu, Wenyu Wang, Chuan Wang, Chao Chen, Jinghui Fang, Liwu Gong, Chuangxin Guo   +7 more
doaj   +1 more source

Analyzing Earth's Position based on the Anisotropic Characteristics of Cosmic Microwave Background Radiation

JPFT (Jurnal Pendidikan Fisika dan Teknologi), 2023
This paper elaborates on the results of an exhaustive study regarding the Earth's position in the universe based on the Cosmic Microwave Background (CMB) radiation map, which is the latest discovery in modern astronomy.
Muhammad Khaidir Komala, Akhmad Aminuddin Bama, Supardi   +2 more
doaj   +1 more source

Study on the Estimation of Utility Harmonic Impedance Based on Minimum Norm of Impedance Difference

IEEE Access, 2020
The existing methods for estimating harmonic impedance usually assume that harmonic impedance is constant in a measurement period. However, for a variety of practical reasons, such as the load change of power grid, utility harmonic impedance may be ...
Fangwei Xu, Chuan Wang, Qin Shu, Zhiquan Ma, Hongru Zheng, Anqing Peng   +5 more
doaj   +1 more source

A Method for Assessing Harmonic Emission Level of Photovoltaic Access Point Considering System-Side Harmonic Voltage Fluctuations

Zhongguo dianli, 2021
With the extensive application of photovoltaic inverter, the harmonic generated during its operation overlaps with the background harmonic of the system at the access point, which causes harmonic amplification and even resonance problems. It is therefore
Xu ZHANG, Yonghai XU, Ziteng LIU, Haiwei JIANG, Shun TAO   +4 more
doaj   +1 more source

Study on the Verification of the Calculated Harmonic Impedance

IEEE Access, 2020
The verifications of the calculated harmonic impedances are necessary for harmonic impedance estimation. Among the existing methods of the verifications, the method, by matching the calculated background harmonic voltage with the measured voltage when ...
Fangwei Xu, Wei Pu, Jinshuai Zhao, Zhiquan Ma, Wentao Lv   +4 more
doaj   +1 more source

Optimal Design of Passive Power Filter Using Multi-Objective Pareto-Based Firefly Algorithm and Analysis Under Background and Load-Side’s Nonlinearity

IEEE Access, 2021
In this paper, the optimal designing of passive power filter (PPF) is formulated as a multi-objective optimization (MOO) problem under several constraints of system's performance indices (PIs) such as individual as well as total harmonic distortion (THD)
Mohit Bajaj, Naveen Kumar Sharma, Mukesh Pushkarna, Hasmat Malik, Majed A. Alotaibi, Abdulaziz Almutairi   +5 more
doaj   +1 more source

Quantitative Analysis of AC/DC Side Harmonic Transfer Characteristics for Modular Multilevel Converter and Suppression Measures

IEEE Access, 2020
MMC (Modular Multilevel Converter) is the preferred topology for renewable energy delivery, but renewable energy resources, such as wind farms, contains much harmonic components.
Bo Yue, Nian Mei, Pengfan Xu, Yue Wang, Taiyuan Yin, Zhenyu Li, Yonghui Liu   +6 more
doaj   +1 more source

Harmonic mitigation potential of shunt harmonic impedances and the influence of background distortion [PDF]

2003 IEEE Bologna Power Tech Conference Proceedings,, 2004
Although complete compensation is only possible using true active filters, shunt harmonic impedances (SHI) have been shown to provide a considerable reduction of the harmonic propagation. In this paper, the mitigation potential of different shunt harmonic impedances is investigated, together with their VA-rating.
Ryckaert, Wouter, Ghijselen, Jozef, Melkebeek, Jan   +2 more
openaire   +2 more sources