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PUMP SPEED REGULATION OF MARINE MAIN ENGINE COOLING WATER SYSTEM AND ENERGY SAVING

机译：海洋主发动机冷却水系统的水泵速度调节与节能

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摘要

In this paper, two kinds of methods which are used to regulate the flow rate of main engine cooling water are compared under the consideration of energy saving. It shows that the use of variable-voltage-variable-frequency (VWF) based speed regulation system to regulate the rotating speed of pump motor consumes less energy than to use traditional method of regulating the throttle valve position. Then, a model of VWF based speed regulating system, which works to regulate the flow rate of main engine cooling water, is established. In this system, the controlling unit applied in the system is PID (proportional-integral-differential) controller. It can be concluded from the simulation results that the dynamic characteristics of cooling water temperature variation after the application of PID controller can satisfy the control requirement.
机译：在考虑节能的前提下，比较了两种调节主机冷却水流量的方法。结果表明，与使用传统的调节节流阀位置的方法相比，使用基于可变电压-可变频率（VWF）的速度调节系统来调节泵电动机的转速消耗的能量更少。然后，建立了基于VWF的调速系统模型，该模型用于调节主机冷却水的流量。在该系统中，应用于系统的控制单元是PID（比例积分微分）控制器。从仿真结果可以得出，应用PID控制器后冷却水温度变化的动态特性可以满足控制要求。

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