混合液气压缩储能机电系统控制策略

Control Strategy of Electromechanical System of Hydro-Pneumatic Compressed Air Storage System

微小规模压缩空气储能是一种环保且很有发展前景的储能方式。本文分析了混合液气压缩储能系统中机电转换环节的工作特性,进而对储能系统的电机控制策略进行研究,提出了利用最大效率点和最大功率点跟踪混合控制策略。针对混合液气压缩储能系统中能量形式转换多的特点,利用宏观能流表示法对混合压缩空气储能系统进行建模,重点对机电转换环节进行仿真。分别利用最大效率点跟踪、最大功率点跟踪以及两种方法的混合控制作为系统控制策略,对比分析仿真结果,证明控制策略的控制效果。

Micro and small scale compressed air energy storage （CAES） is an environmental friendly and promising energy saving method. For optimizing the control strategy of motor, this paper analyzed the characteristics of electromechanical conversion of the storage system, and then proposed a hybrid control strategy based on the maximum power point tracking and maximum efficiency point tracking. A simulation model was developed by energetic macroscopic representation （EMR） to analysis the working processes of system, according to various transformation forms of energy. This paper used the maximum power point tracking, maximum efficiency point tracking and the hybrid control of these two methods as the control strategy for system simulation. Comparisons of the simulation results show that energy conversion and storage performance can be effectively improved by adopting the hybrid control method.