基于模糊控制的SVC水冷却系统仿真研究

摘要

针对静止无功补偿装置(SVC)水冷却系统通过单一的风机投切来实现降温控制出现的精度差、稳定性差等问题,引入电动三通阀对流经风机的水流比例进行模糊控制.根据专家理论知识和实践经验的总结给出其控制策略,利用Matlab仿真分析表明风机与电动三通阀相结合有良好的控制效果,有效避免风机频繁投切,增强水冷却系统稳定性,同时避免水温波动剧烈导致的阀组凝露现象.%Only using cooling fan to reduce the temperature of water may cause some problems with low accuracy and stability in SVC cooling system. Using electric three-way valve to control the proportion of water which goes through the cooling fan fuzzily can figure it out. This paper presented the control strategy based on specialized theories and practical experience. The result of studying with Matlab shows that the application of cooling fan and electric three-way valve gives a good control performance, effectively prevents the fans frequently switching and improve the stability of cooling system, avoid condensation caused by water temperature fluctuations.