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7th International Conference on Electrical Engineering, control and Robotics, EECR 2021

作者： Linbo, Gan Anfei, Xu Ziqiang, Xi Xiaogang, Du Hubei Key Lab. of Solar Energy Efficient Utilization and Energy Storage System Operation Control Hubei University of Technology Wuhan430068 China

CN3306 is a current mode fixed frequency PWM boost type multiple battery charging management integrated circuit. This article introduces the basic principles and characteristics of CN3306, and designs a boost circuit based on the characteristics of CN3306 chip with stable voltage, small ripple range and low power consumption. Explained in detail how to select peripheral circuit parameters and the practical application of CN3306 in BOOST circuit, and use the PSIM simulation software to build a photovoltaic power generation system model for simulation verification, the result reached the expected value. © Published under licence by IOP Publishing Ltd.

关键词： Low power electronics

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Phase delay solution based on instantaneous reactive power theory 5

Phase delay solution based on instantaneous reactive power t...

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5th International Conference on energy Engineering and Environmental Protection, EEEP 2020

作者： Zhao, Mengzhen Zhang, Jie Zhang, Xin Zhou, Wandong Xu, Anfei Hubei Prov. Key Lab. of Efficient Solar Energy Utilization and Energy Storage Operation Control Hubei University of Technology Wu Han430068 China

According to the theoretical detection method of instantaneous reactive power, the paper proposes a harmonic current detection method based on the combination of synchronous rotating coordinate system and PI control. This method adds PI adjustment after the filtering link to accurately track the current amplitude, realizes zero error control, and performs phase compensation on the rotating coordinate system to compensate the fixed phase delay time of the filter, so as to achieve the accuracy of the harmonic detection link. The analysis of the experimental results shows that the improved harmonic detection method is equally effective under the three-phase symmetrical load and three-phase asymmetrical load. Under three-phase symmetrical load conditions, the improved harmonic detection method reduces the THD of the grid current by 0.72% compared with the original method. Under three-phase asymmetrical load conditions, the improved method reduces the THD of the grid current by 0.11% compared to the original method. © Published under licence by IOP Publishing Ltd.

关键词： Harmonic analysis

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Research on control strategy of maximum power tracking variable step size perturbation & observation method for photovoltaic power generation system 5

Research on control strategy of maximum power tracking varia...

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5th International Conference on energy Engineering and Environmental Protection, EEEP 2020

作者： Gao, Zhen Kai, Fei Xi, Ziqiang Hubei University of Technology Hubei Prov. Key Lab. of Efficient Solar Energy Utilization and Energy Storage Operation Control Wuhan430068 China State Grid Hubei Electric Power Company Wuhan Jiangxia District Power Supply Company Wuhan430000 China

There are three defects of traditional perturbation and observation method in the maximum power tracking control process of photovoltaic power generation systems, which are oscillation, misjudgment and poor tracking accuracy. Thus, a variable step perturbation and observation method based on power prediction is proposed for three-level DC/DC converters in this paper, which effectively solved oscillation, misjudgment, tracking accuracy problems, improving the tracking speed and precision of the algorithm, and the verification results of the maximum power tracking algorithm based on the three-level DC/DC converter structure has also been indicated. © Published under licence by IOP Publishing Ltd.

关键词： DC-DC converters

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A new information publishing system for mobile terminal by location-based services based on iot 5th

A new information publishing system for mobile terminal by l...

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5th International Conference on Geo-Spatial Knowledge and Intelligence, GSKI 2017

作者： Zhu, Li Ma, Guoguang Hubei Collaborative Innovation Center for High-Efficient Utilization of Solar Energy Hubei University of Technology Wuhan China Hubei Key Laboratory for High-Efficiency Utilization of Solar Energy and Operation Control of Energy Storage System Hubei University of Technology Wuhan China Hubei Power Grid Intelligent Control and Equipment Engineering Technology Research Center Wuhan China Network Technology Company Limited Xiamen China

ISBN: (纸本)9789811308956

In this paper, a new information publishing system based on Internet of things is proposed. It mainly consists of three parts: the screen side, the service side and the client side. And all of them connect each other by network. The screen side has realized the internet of screens in which geographically dispersed independent screens are connected to the internet by the customized set-top boxes. The server cluster provides high performance application services and manages the promptly increasing multimedia publishing information to users on the service side. Meanwhile MQTT protocol is deployed to implement a lightweight broker-based publish and subscribe messaging mechanism in our constrained environments to solve the bandwidth bottleneck. On the client side, the mobile terminal user can release information with dedicated software by location-based services. The paper has realized a prototype SzIoScreen, and give some related test results. © Springer Nature Singapore Pte Ltd. 2018.

关键词： Location based services

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Design of BOOST converter based on CN3306 chip

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Journal of Physics: Conference Series 2021年第1期1887卷

作者： Gan Linbo Xu Anfei Xi ziqiang Du xiaogang Hubei Key Laboratory of Solar Energy Efficient Utilization and Energy Storage System Operation Control Hubei University of Technology Wuhan 430068

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A new Information publishing system Based on Internet of things

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IOP Conference Series: Materials Science and Engineering 2018年第5期322卷

作者： Li Zhu Guoguang Ma Hubei Collaborative Innovation Center for High-efficient Utilization of Solar Energy Hubei University of Technology Wuhan 430068 P. R. China Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System Hubei University of technology Wuhan 430068 P. R. China Hubei Power Grid Intelligent Control and Equipment Engineering Technology Research Center Wuhan 430068 P. R. China Shenzhou rent screen (Xiamen) network technology Company Limited

A new information publishing system based on Internet of things is proposed, which is composed of four level hierarchical structure, including the screen identification layer, the network transport layer, the service management layer and the publishing application layer. In the architecture, the screen identification layer has realized the internet of screens in which geographically dispersed independent screens are connected to the internet by the customized set-top boxes. The service management layer uses MQTT protocol to implement a lightweight broker-based publish/subscribe messaging mechanism in constrained environments such as internet of things to solve the bandwidth bottleneck. Meanwhile the cloud-based storage technique is used to storage and manage the promptly increasing multimedia publishing information. The paper has designed and realized a prototype SzIoScreen, and give some related test results.

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