讲述基于PLC的PID控制算法的水轮发电机冷却风机变频控制系统。系统主要应用于灯泡贯流式水轮发电机组，使得灯泡贯流机组冷却温度恰当，既节能又兼顾发电效率和发电机寿命。%This paper describes the PID control algorithm of PLC based turbine generator cooling fan frequency conversion control system. The system is mainly used for bulb turbine unit,the bulb tubular units appropriate cooling temperature,energy saving,power generation efficiency and service life of the generator.
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