Study of Vienna rectifier and a highly efficient single phase two stage inverter with low THD

2014 ◽  
Author(s):  
Srabanty Ahmed Shaon ◽  
K. M. A. Salam
Keyword(s):  
Single Phase ◽  
Two Stage ◽  
Highly Efficient ◽  
Vienna Rectifier

Single-Phase Two-Stage Boost Sinusoidal Rectifier Using Capacitor for Pumping Action

2012 ◽  
Vol 132 (12) ◽  
pp. 1169-1170
Author(s):  
Yasuhiko Neba ◽  
Kouichi Ishizaka ◽  
Ryozo Itoh ◽  
Hirokazu Matsumoto ◽  
Tomoya Sakano
Keyword(s):  
Single Phase ◽  
Two Stage

Single-Phase Two-Stage Transformerless Grid-Connected Inverter For Photovoltaic Applications

2021 ◽  
Author(s):  
Naser Vosoughi Kurdkandi ◽  
Milad Ghavipanjeh Marangalu ◽  
Tala Hemmati ◽  
Seyed Hossein Hosseini ◽  
Oleksandr Husev ◽  
...  
Keyword(s):  
Single Phase ◽  
Two Stage ◽  
Photovoltaic Applications ◽  
Grid Connected Inverter

scholarly journals Development of a Highly Efficient SOFC Module Using Two-stage Stacks and a Fuel Regeneration Process

Fuel Cells ◽  
2017 ◽  
Vol 17 (4) ◽  
pp. 535-540 ◽  
Author(s):  
K. Nakamura ◽  
T. Ide ◽  
S. Taku ◽  
T. Nakajima ◽  
M. Shirai ◽  
...  
Keyword(s):  
Regeneration Process ◽  
Two Stage ◽  
Highly Efficient

The Two-Stage Recognition Method Based on Texture Signals of the Heterogeneous Unsteady Iris

2021 ◽  
Author(s):  
Shuai Liu ◽  
Yuanning Liu ◽  
Xiaodong Zhu ◽  
Jing Liu ◽  
Guang Huo ◽  
...  
Keyword(s):  
Iris Recognition ◽  
Recognition Accuracy ◽  
Texture Features ◽  
Unsteady State ◽  
Recognition Method ◽  
Two Stage ◽  
Second Stage ◽  
Highly Efficient ◽  
Training Samples ◽  
Gray Values

In this paper, a two-stage multi-category recognition structure based on texture features is proposed. This method can solve the problem of the decline in recognition accuracy in the scene of lightweight training samples. Besides, the problem of recognition effect different in the same recognition structure caused by the unsteady iris can also be solved. In this paper’s structure, digitized values of the edge shape in the iris texture of the image are set as the texture trend feature, while the differences between the gray values of the image obtained by convolution are set as the grayscale difference feature. Furthermore, the texture trend feature is used in the first-stage recognition. The template category that does not match the tested iris is the elimination category, and the remaining categories are uncertain categories. Whereas, in the second-stage recognition, uncertain categories are adopted to determine the iris recognition conclusion through the grayscale difference feature. Then, the experiment results using the JLU iris library show that the method in this paper can be highly efficient in multi-category heterogeneous iris recognition under lightweight training samples and unsteady state.

Highly efficient production of FAMEs and β-farnesene from a two-stage biotransformation of waste cooking oils

2019 ◽  
Vol 199 ◽  
pp. 112001 ◽  
Author(s):  
Jiajia Lv ◽  
Yuefei Wang ◽  
Chengyu Zhang ◽  
Shengping You ◽  
Wei Qi ◽  
...  
Keyword(s):  
Efficient Production ◽  
Two Stage ◽  
Highly Efficient ◽  
Waste Cooking Oils ◽  
Cooking Oils

A highly efficient two-stage cultivation strategy for lutein production using heterotrophic culture of Chlorella sorokiniana MB-1-M12

2018 ◽  
Vol 253 ◽  
pp. 141-147 ◽  
Author(s):  
Chun-Yen Chen ◽  
I-Chia Lu ◽  
Dillirani Nagarajan ◽  
Chien-Hsiang Chang ◽  
I-Son Ng ◽  
...  
Keyword(s):  
Chlorella Sorokiniana ◽  
Heterotrophic Culture ◽  
Two Stage ◽  
Highly Efficient ◽  
Cultivation Strategy ◽  
Lutein Production

scholarly journals A Topology Synthetization Method for Single-Phase, Full-Bridge, Transformerless Inverter with Leakage Current Suppression Part I

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 434 ◽  
Author(s):  
Xiumei Yue ◽  
Hongliang Wang ◽  
Xiaonan Zhu ◽  
Xinwei Wei ◽  
Yan-Fei Liu
Keyword(s):  
Leakage Current ◽  
Pulse Width ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Circuit Model ◽  
Double Frequency ◽  
Highly Efficient ◽  
Sinusoidal Pulse Width Modulation ◽  
Derivation Procedure ◽  
Bridge Topologies

Single-phase full-bridge transformerless topologies, such as the H5, H6, or the highly efficient and reliable inverter concept (HERIC) topologies, are commonly used for leakage current suppression for photovoltaic (PV) applications. The main derivation methodology of full-bridge topologies has been used based on both a DC-based decoupling model and an AC-based decoupling model. However, this methodology is not suited to the search for all possible topologies, and cannot verify whether they are inclusive. Part I of this paper will propose a new topology derivation methodology based on unipolar sinusoidal pulse width modulation (USPWM) to search all possible full-bridge topologies for leakage current suppression. First of all, a unified circuit model is proposed, instead of the DC- and AC-based models. Secondly, a mathematic method called the MN principle is then proposed to search for all possible topologies, and a derivation procedure is provided. It was verified that all existing topologies could be found using the proposed method; furthermore, seven new topologies were derived. The proposed topology derivation methodology is extended to search topologies under Double-Frequency USPWM (DFUSPWM). Twenty topologies under USPWM and four topologies under DFUSPWM have been derived.

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