Review for "A real time control strategy for improvement of autonomous operation in AC / DC micro grids using electric springs"

2020 ◽  
Keyword(s):  
Real Time ◽  
Control Strategy ◽  
Real Time Control ◽  
Time Control ◽  
Autonomous Operation ◽  
Micro Grids

A real time control strategy for improvement of autonomous operation in AC / DC micro grids using electric springs

2020 ◽  
Vol 30 (12) ◽  
Author(s):  
S. Hari Charan Cherukuri ◽  
Ravindra B. Kuhada ◽  
Vishal M. Kachhad ◽  
Naran M. Pindoriya
Keyword(s):  
Real Time ◽  
Control Strategy ◽  
Real Time Control ◽  
Time Control ◽  
Autonomous Operation ◽  
Micro Grids

Optimal control of a novel uninterrupted multi-speed transmission for hybrid electric mining trucks

2019 ◽  
Vol 233 (12) ◽  
pp. 3235-3245 ◽  
Author(s):  
Weiwei Yang ◽  
Jiejunyi Liang ◽  
Jue Yang ◽  
Nong Zhang
Keyword(s):  
Dynamic Programming ◽  
Real Time ◽  
Control Strategy ◽  
Dynamic Models ◽  
Fuel Efficiency ◽  
Real Time Control ◽  
Traction Motor ◽  
Time Control ◽  
Power Split ◽  
Shift Strategy

Considering the energy consumption and specific performance requirements of mining trucks, a novel uninterrupted multi-speed transmission is proposed in this paper, which is composed of a power-split device, and a three-speed lay-shaft transmission with a traction motor. The power-split device is adapted to enhance the efficiency of the engine by adjusting the gear ratio continuously. The three-speed lay-shaft transmission is designed based on the efficiency map of traction motor to guarantee the drivability. The combination of the power-split device and three-speed lay-shaft transmission can realize uninterrupted gear shifting with the proposed shift strategy, which benefits from the proposed adjunct function by adequately compensating the torque hole. The detailed dynamic models of the system are built to verify the effectiveness of the proposed shift strategy. To evaluate the maximum fuel efficiency that the proposed uninterrupted multi-speed transmission could achieve, dynamic programming is implemented as the baseline. Due to the “dimension curse” of dynamic programming, a real-time control strategy is designed, which can significantly improve the computing efficiency. The simulation results demonstrate that the proposed uninterrupted multi-speed transmission with dynamic programming and real-time control strategy can improve fuel efficiency by 11.63% and 8.51% compared with conventional automated manual transmission system, respectively.

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