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14 results on '"He, Anran"'

1. The Management of TikTok Operation

Author

He, Anran, Li, Xiaodong, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Wang, Taosheng, editor, Patnaik, Srikanta, editor, Ip, Andrew W.H., editor, and Tavana, Madjid, editor

Published
2022
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8. A Nonorthogonal Error Analysis Method of Triaxial Module Using High-Temperature DC SQUID Magnetometer

Author

Zhang, Zhidan, He, Anran, Wu, Wenqi, and Kong, Xiangyan

Abstract

For its high sensitivity and wide bandwidth, superconducting quantum interference device (SQUID) has great advantages in many applications, such as biomagnetism, marine electromagnetic detection, submarine communications, and so on. However, due to the complexity of the environment, the nonorthogonal error of the detection module will have a significant impact on the detection results. Among them, the nonorthogonality of the triaxial module to install sensors is one of the important parameters in the detection system. In this article, the influence of nonorthogonality on static and dynamic sources is given through theoretical derivation and simulation analysis, and the nonorthogonality errors of the triaxial module in one direction were evaluated through experiments using one high-temperature dc SQUID. Finally, the nonorthogonality of the module was derived from the results of the experiments. The way of error analysis in this article may have a guiding role for the future application of triaxial sensors and the evaluation of the nonorthogonality of triaxial module.

Published
2024
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11. Practical Research on VSC Prototype Based on IGBTs Serial Connected Technology

Author

Wang Xiaohong, Weibang Li, Zheng Yuping, Hou Kai, He Anran, and Jiang Yingwei

Subjects
business.industry, Computer science, Electrical engineering, High voltage, Insulated-gate bipolar transistor, law.invention, Electric power system, Capacitor, law, Snubber, Inverter, Electronics, Voltage source, Electrical and Electronic Engineering, business, Voltage
Abstract

With the development of insulated gate bipolar transistor (IGBT) and pulsewidth modulation control strategy, the voltage source converter (VSC) is getting more and more popular, which can be used in high-voltage frequency converter, VSC-HVDC, FACTS, and custom power. In high voltage and high power applications, serial connection of IGBTs is a good solution to overcome the voltage limitation of the single IGBT. However, for using IGBTs in this way, a comprehensive range of issues need to be addressed, especially the static and dynamic voltage-sharing of each IGBT module. This paper presents the theoretical and practical study on how to use serial-connected IGBTs in a VSC, including adaptive dynamic voltage-balance strategy, voltage-balance circuit, power supply system, and valve vase electronics. A three-phase two-level VSC consisted of 6 arms multiplied by 12 serial-connected 3300 V IGBT modules is also developed. To test the performance of the VSC, pulse test of the one arm and inverter operation test of the whole VSC are carried out. The experimental results show that the maximum voltage imbalance is about 10%, the voltage shoots are less than 12%; and the VSC works stably, which indicates a solid foundation for industrial application.

Published
2019

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