Implement of Water Supply with Constant Pressure by Fuzzy Controller and Variable Frequency Variable Speed Drive System

In order to save energy in operation of pumps and ensure water supply with constant pressure and use for fire control, the principle of saving energy of pump in variable frequency variable speed drive system was analyzed. The system structure was designed with fuzzy controller, variable frequency variable speed drive system and three main pumps as core. Some debugging experiences were introduced. This system are obvious effect in saving energy and its idea for design, interface technique may be used for reference for technique reform in analogy water supply system..