Liang Geng
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Liang Geng has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Wenjuan Hao
Department of Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
2 shared publications - Wenyan Xiao
Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu China
2 shared publications - Yu Wang
Department of Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
2 shared publications
Latest Publications
- 24 July 2018
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 34 (5) , 4536-4557
Improved Control Strategy for Fault-Tolerant Flux-Switching Permanent-Magnet Machine Under Short-Circuit Condition
Fault-tolerant flux-switching permanent-magnet (FTFSPM) machines are suitable for high-reliability applications owing to their good fault-tolerant capability and relatively high torque density. Under a short-circuit fault, the torque ripple caused by the short-circuit current of the FTFSPM machine affects the steady-state performance of the system; in addition, the traditional proportional-integral (PI) controller of the speed loop can hardly guarantee the optimal dynamic performance of the speed. In this study, to solve these two problems, an improved control strategy that can offer two improvements for the FTFSPM machine under the short-circuit condition is investigated. As the first improvement, on the basis of analysis of the torque ripple caused by the short-circuit current, the feed-forward control is employed to reduce both the torque ripple. As the second improvement, on the basis of analysis of the influence of the speed loop PI parameters on the system dynamic performance, a torque integral balance-control method is proposed. This algorithm can make the speed and the electromagnetic torque converge simultaneously after only one adjustment of the speed. Thus, the best possible dynamic response for the speed can be achieved. Experimental results verify the correctness and effectiveness of the improved control strategy.
- 24 July 2018
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 34 (5) , 4536-4557
Improved Control Strategy for Fault-Tolerant Flux-Switching Permanent-Magnet Machine Under Short-Circuit Condition
Fault-tolerant flux-switching permanent-magnet (FTFSPM) machines are suitable for high-reliability applications owing to their good fault-tolerant capability and relatively high torque density. Under a short-circuit fault, the torque ripple caused by the short-circuit current of the FTFSPM machine affects the steady-state performance of the system; in addition, the traditional proportional-integral (PI) controller of the speed loop can hardly guarantee the optimal dynamic performance of the speed. In this study, to solve these two problems, an improved control strategy that can offer two improvements for the FTFSPM machine under the short-circuit condition is investigated. As the first improvement, on the basis of analysis of the torque ripple caused by the short-circuit current, the feed-forward control is employed to reduce both the torque ripple. As the second improvement, on the basis of analysis of the influence of the speed loop PI parameters on the system dynamic performance, a torque integral balance-control method is proposed. This algorithm can make the speed and the electromagnetic torque converge simultaneously after only one adjustment of the speed. Thus, the best possible dynamic response for the speed can be achieved. Experimental results verify the correctness and effectiveness of the improved control strategy.
- 17 January 2018
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Energy Conversion
- Vol. 33 (3) , 1285-1296
Control Method for Optimal Dynamic Performance of DTC-Based PMSM Drives
The direct torque control system has excellent dynamic performance of electromagnetic torque, however, the dynamic performance of the speed is affected by the PI parameters of the speed closed loop. Hence, a control method which can realize the optimal dynamic performance of the speed is investigated in this paper. In this method, the integration balance of sine value for the torque angle is introduced, based on this, the speed and the electromagnetic torque can be controlled to converge simultaneously after the speed adjusting only once. Thus, the best possible dynamic response for the speed can be achieved. The proposed method is verified by both simulation and experimental results.
- 17 January 2018
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Energy Conversion
- Vol. 33 (3) , 1285-1296
Control Method for Optimal Dynamic Performance of DTC-Based PMSM Drives
The direct torque control system has excellent dynamic performance of electromagnetic torque, however, the dynamic performance of the speed is affected by the PI parameters of the speed closed loop. Hence, a control method which can realize the optimal dynamic performance of the speed is investigated in this paper. In this method, the integration balance of sine value for the torque angle is introduced, based on this, the speed and the electromagnetic torque can be controlled to converge simultaneously after the speed adjusting only once. Thus, the best possible dynamic response for the speed can be achieved. The proposed method is verified by both simulation and experimental results.