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Hong Yi
Key Laboratory of Marine Intelligent Equipment and System (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China

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Journal article
Published: 26 April 2021 in Energies
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Due to the simple structure, low inertia and the ability to operate for a long time under high-speed and high-temperature conditions, the induction motor is widely used in high-speed applications. Aiming at the most prominent loss and stress problems in high-speed induction motors, the use of low loss material and the choice of a reliable rotor structure are effective optimized methods. In this paper, the electromagnetic loss, stator temperature distribution and performance parameters of high-speed induction motor are analyzed with stator cores of different materials. In addition, for the different rotor structures, the mechanical stress is compared. Furthermore, the comparison and analysis are used to improve the motor performance and provide a reference for prototype development. A performance test of the prototype is conducted, which proves the validity of the study in this paper.

ACS Style

Zeyang Fan; Hong Yi; Jian Xu; Kun Xie; Yue Qi; Sailin Ren; Hongdong Wang. Performance Study and Optimization Design of High-Speed Amorphous Alloy Induction Motor. Energies 2021, 14, 2468 .

AMA Style

Zeyang Fan, Hong Yi, Jian Xu, Kun Xie, Yue Qi, Sailin Ren, Hongdong Wang. Performance Study and Optimization Design of High-Speed Amorphous Alloy Induction Motor. Energies. 2021; 14 (9):2468.

Chicago/Turabian Style

Zeyang Fan; Hong Yi; Jian Xu; Kun Xie; Yue Qi; Sailin Ren; Hongdong Wang. 2021. "Performance Study and Optimization Design of High-Speed Amorphous Alloy Induction Motor." Energies 14, no. 9: 2468.

Journal article
Published: 06 June 2019 in Sensors
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In this study, a new joint formation combined with a two-part underwater towed vehicle (towfish) with multiple autonomous underwater vehicles (AUVs) was investigated. A triangular structure formation was established based on graph theory, in which the main point is the secondary towed vehicle acting as the “leader,” and the other two points are AUVs acting as “followers.” The excellent real-time performance and high flexibility of the towfish is highlighted, and the communication delay and fixed routine of AUVs can be avoided simultaneously. As to the obstacle avoidance, the null-space-based behavioral approach is proposed. On the basis of this approach, the formation task moving to the target is decomposed into different subtasks, and the obstacle avoidance subtask is set as the highest priority. The vector of the low-level task is projected to the null space of the high-level task vector, and the integrated task output is used as the final output function. The low-level task is partially or completely accomplished while handling the higher task; therefore, the mutual conflict between different level targets can be avoided. Moreover, the corresponding task functions are designed in accordance with different subtask priorities. The comprehensive output function of formation motion is deduced and established to ensure that obstacles can be avoided effectively. Furthermore, simulation results demonstrate the effectiveness and feasibility of the proposed method in a complex underwater environment with obstacles.

ACS Style

Shi-Kun Pang; Ying-Hui Li; Hong Yi. Joint Formation Control with Obstacle Avoidance of Towfish and Multiple Autonomous Underwater Vehicles Based on Graph Theory and the Null-Space-Based Method. Sensors 2019, 19, 2591 .

AMA Style

Shi-Kun Pang, Ying-Hui Li, Hong Yi. Joint Formation Control with Obstacle Avoidance of Towfish and Multiple Autonomous Underwater Vehicles Based on Graph Theory and the Null-Space-Based Method. Sensors. 2019; 19 (11):2591.

Chicago/Turabian Style

Shi-Kun Pang; Ying-Hui Li; Hong Yi. 2019. "Joint Formation Control with Obstacle Avoidance of Towfish and Multiple Autonomous Underwater Vehicles Based on Graph Theory and the Null-Space-Based Method." Sensors 19, no. 11: 2591.

Journal article
Published: 11 April 2018 in Applied Sciences
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This study presents a new adaptive trajectory tracking control scheme for a fully actuated Unmanned Surface Vehicle (USV) to track a common moving target region. In this control concept, the desired objective trajectory is specified as a moving region instead of a moving point, and so which is called non-strict trajectory tracking. Within this control scheme, a regression matrix is used to handle the parameter uncertainties, and region-based control scheme is used to track a desired moving region. A switching gain control term based on the exponential function is proposed to make the USV’s trajectory converge into the desired moving region rather than converge on the boundary of the moving region, and to reduce system chattering at the same time. A Lyapunov-like function is presented for stability analysis of the proposed control scheme. Numerical simulations are conducted to demonstrate the performance of the proposed non-strict trajectory tracking control scheme of the USV.

ACS Style

Jian Wang; Jing-Yang Liu; Hong Yi; Nai-Long Wu. Adaptive Non-Strict Trajectory Tracking Control Scheme for a Fully Actuated Unmanned Surface Vehicle. Applied Sciences 2018, 8, 598 .

AMA Style

Jian Wang, Jing-Yang Liu, Hong Yi, Nai-Long Wu. Adaptive Non-Strict Trajectory Tracking Control Scheme for a Fully Actuated Unmanned Surface Vehicle. Applied Sciences. 2018; 8 (4):598.

Chicago/Turabian Style

Jian Wang; Jing-Yang Liu; Hong Yi; Nai-Long Wu. 2018. "Adaptive Non-Strict Trajectory Tracking Control Scheme for a Fully Actuated Unmanned Surface Vehicle." Applied Sciences 8, no. 4: 598.

Journal article
Published: 06 December 2017 in Energies
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With the rapid development of renewable energy generation, single-phase grid-connected inverters have been widely applied in modern power systems. Since the power output of the renewable sources is continuously changing, independent active/reactive power control and a rapid current tracking performance is supposed to be achieved in a single-phase grid-connected inverter. However, the poor orthogonal-axis-constructing strategy and the ineffective decoupling in some widely-used controllers have severely weakened the dynamic performance of the single-phase inverter. To deal with the challenges above, this study proposes a comprehensive control strategy for current control in a single-phase grid-connected inverter. In the proposed control strategy, a virtual closed-loop is constructed to improve the dynamic performance and realize independent power control under a synchronous frame. Then, complex vector theory is used to model the virtual closed-loop based single-phase inverter, and a novel digital controller is designed based on zero-pole cancellation and minimum beat control to completely decouple the active/reactive components and achieve a supreme current tracking performance. Experimental results are shown to validate the feasibility of the proposed current controller.

ACS Style

Kun Xie; Gangyi Hu; Hong Yi; Zhibi Lyu; Yangxiao Xiang. A Novel Digital Control Method of a Single-Phase Grid-Connected Inverter Based on a Virtual Closed-Loop Circuit and Complex Vector Representation. Energies 2017, 10, 2068 .

AMA Style

Kun Xie, Gangyi Hu, Hong Yi, Zhibi Lyu, Yangxiao Xiang. A Novel Digital Control Method of a Single-Phase Grid-Connected Inverter Based on a Virtual Closed-Loop Circuit and Complex Vector Representation. Energies. 2017; 10 (12):2068.

Chicago/Turabian Style

Kun Xie; Gangyi Hu; Hong Yi; Zhibi Lyu; Yangxiao Xiang. 2017. "A Novel Digital Control Method of a Single-Phase Grid-Connected Inverter Based on a Virtual Closed-Loop Circuit and Complex Vector Representation." Energies 10, no. 12: 2068.