A Coordination Control Strategy for An Isolated Bidirectional AC/DC Matrix Converter

Author(s):  
Yang Mei ◽  
Ziyu Liu ◽  
Weichao Huang
Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3396 ◽  
Author(s):  
Weizhang Song ◽  
Jiang Liu ◽  
Xiangdong Sun ◽  
Fenjun Wu ◽  
Daqing Gao ◽  
...  

The contribution of this paper is putting forward a kind of ion accelerator magnet excitation power supply with bidirectional reduced matrix converter (BRMC) as well as a coordination control strategy with bipolar current space vector modulation strategy, which is utilized to realize bidirectional power flow for a BRMC system to solve problems such as low input power factor, large input current harmonics and no bidirectional energy in the conventional ion accelerator magnet excitation power supply. Meanwhile, a hybrid commutation strategy combining the simplified three-step commutation with zero vector commutation was proposed to solve the commutation problem for a matrix-type first stage in BRMC. The feasibility and effectiveness of the proposed strategy, which can achieve bidirectional energy flow and safer commutation, have been verified by the experimental results.


Author(s):  
Xue Xia ◽  
Huan Xie ◽  
Tianqi Zhao ◽  
Zesen Wang ◽  
Hao Liang ◽  
...  

2020 ◽  
Vol 9 (2) ◽  
pp. 155-168
Author(s):  
Ziwang Lu ◽  
◽  
Guangyu Tian ◽  

Torque interruption and shift jerk are the two main issues that occur during the gear-shifting process of electric-driven mechanical transmission. Herein, a time-optimal coordination control strategy between the the drive motor and the shift motor is proposed to eliminate the impacts between the sleeve and the gear ring. To determine the optimal control law, first, a gear-shifting dynamic model is constructed to capture the drive motor and shift motor dynamics. Next, the time-optimal dual synchronization control for the drive motor and the time-optimal position control for the shift motor are designed. Moreover, a switched control for the shift motor between a bang-off-bang control and a receding horizon control (RHC) law is derived to match the time-optimal dual synchronization control strategy of the drive motor. Finally, two case studies are conducted to validate the bang-off-bang control and RHC. In addition, the method to obtain the appropriate parameters of the drive motor and shift motor is analyzed according to the coordination control method.


Author(s):  
J. Oyama ◽  
T. Higuchi ◽  
E. Yamada ◽  
T. Koga ◽  
T. Lipo

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