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Your search keyword '"Cao, Jianghua"' showing total 24 results
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24 results on '"Cao, Jianghua"'

6. Double integral sliding mode control of a Buck-Boost voltage balancer

Author

Huang Qilin, Cao Jianghua, and Ding Jie

Subjects
Buck-Boost voltage balancer, bipolar DC micro-grid, double integral sliding mode controller, Electronics, TK7800-8360
Abstract

The bipolar DC micro-grid based on the Buck-Boost voltage balancer framework has been widely studied. The effective control voltage balancer keeps the positive and negative voltage of the system equal, to ensure the power quality of the system. Aiming at the control of Buck-Boost voltage balancer, a double integral sliding mode controller is designed. This method takes into account the nonlinearity and dynamic state of the system, and adopts double integral sliding surface to reduce the steady-state error. The experimental results show that compared with the traditional PI controller, the controller designed in this paper can effectively shorten the dynamic adjustment time and reduce the difference between positive and negative voltage.

Published
2018
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8. Design and Analysis of a Hybrid-Excited Doubly Salient Generator With Symmetric Phases Based on Long Pitch Field Sources

Author

Gao, Mengzhen, Yang, Xiangyu, Cao, Jianghua, Jiang, Siyuan, Zhao, Shiwei, and Zhang, Zifan

Abstract

To solve the asymmetric problems of each phase caused by the different relative positions of the armature coils and excitation sources (PMs and excitation coils) in traditional three-phase hybrid-excited doubly salient generator (HEDSG), a novel HEDSG with long pitch field sources is proposed in this paper. Because of the adoption of excitation winding wound around the PMs sandwiched “four-teeth”, the symmetric magnetic circuits among phases can be achieved, thus the balanced three-phase back electromotive force (EMF) curves can be obtained. First, the configuration of proposed HEDSG is described, based on which its operation principle is discussed from the perspective of magnetic circuits. Besides, the flux regulation principle is analyzed based on the simplified equivalent magnetic circuit model. Then, a multi-step design optimization method is implemented to determine optimal structural parameters. Whereafter, the effect of the bidirectional excitation on the static and dynamic performances of the proposed HEDSG is investigated, which demonstrates it has a strong flux regulation ability. Furthermore, a comparative study between the proposed and traditional HEDSGs is conducted. It is shown that the proposed HEDSG can essentially solve the asymmetric problem among phases and possesses the merits of lower cogging torque and higher output power. Finally, a prototype of the proposed HEDSG is fabricated and tested so as to experimentally verify the analysis and simulation.

Published
2024
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17. SOX2 promotes resistance of melanoma with PD-L1 high expression to T-cell-mediated cytotoxicity that can be reversed by SAHA

Author

Wu, Ruiyan, primary, Wang, Caiqin, additional, Li, Zhiming, additional, Xiao, Jian, additional, Li, Chunyan, additional, Wang, Xuemin, additional, Kong, Pengfei, additional, Cao, Jianghua, additional, Huang, Fuxue, additional, Li, Zhiling, additional, Huang, Yun, additional, Chen, Yuhong, additional, Li, Xuan, additional, Yang, Dong, additional, Zhang, Hailiang, additional, Mai, Jia, additional, Feng, Gongkan, additional, Deng, Rong, additional, and Zhu, Xiaofeng, additional

Published
2020
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