Energy management of servo press lines based on flywheel speed adaptive planning
PENG Fazhong1, ZHANG Peng2, WANG Liping1, SHAO Zhufeng1, YANG Di1, YANG Kuai1
1. Beijing Key Laboratory of Precision/Ultra-Precision Manufacturing Equipments and Control, State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; 2. Jier Machine-Tool Group Co., Ltd., Jinan 250022, China
Abstract：The main drive motors in large servo press lines often draw megawatts of power with frequent acceleration and deceleration of the slider, which strongly affects the power grid and power usage. Thus, effective energy management is indispensable to ensure smooth, efficient operation of large servo press lines. This paper studies how to improve the energy management of large servo press lines using flywheel energy storage. A gradient project algorithm and B-spline speed planning are used to develop a half-period flywheel speed adaptive planning algorithm. This algorithm better optimizes the power usage by introducing an approximately sinusoidal disturbance which avoids sudden changes in the flywheel speed. Finally, the servo press line model is analyzed theoretically in Simulink. The simulation results show that the half-period adaptive flywheel speed planning algorithm significantly improves the incoming line power and bus voltage fluctuations as an effective method for energy management of large servo press lines.
彭发忠, 张朋, 王立平, 邵珠峰, 杨迪, 杨快. 基于飞轮转速自适应规划的伺服线能量管理[J]. 清华大学学报（自然科学版）, 2020, 60(11): 927-933.
PENG Fazhong, ZHANG Peng, WANG Liping, SHAO Zhufeng, YANG Di, YANG Kuai. Energy management of servo press lines based on flywheel speed adaptive planning. Journal of Tsinghua University(Science and Technology), 2020, 60(11): 927-933.
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2020, Vol. 60 
